Happy New Year 2010

Happy New Year 2010!

I wish you a happy, healthy and prosperous year!

Hadikusumo

Safety Communication In Construction Projects

Communication of the human skills is the best way for effective and successful implementation of the safety program. Aim and meaning of the safety program is very difficult to understand for employees working in different industries. However, the risk communication design can help people work safely and brings the benefit to the workplace. According to the study from Ferguson et al. (2003), the risk communication has 3 elements in order to make it effective:

1) Usability - how easy is the material to read, remember and comprehend
2) Usefulness - the material relevant to the target audience and
3) Message framing effects - what is the influence of presenting the same risk information as positives or negatives

According to Herrero et al. (2002), one of the problems in safety management is the relationship between top manager and workers. The lack of communication from top manager to the workers could be damaged the safety management. Cullen (1990) also recognized that the break in the communications sequence between different of individuals and groups on the platform itself and the management structure is major factors contribute to the increase of the disaster.

Although many construction projects in Thailand should be intensive on safety regulation, the construction workers do not care about the safety because they are temporary employee. This can be the deficiency between the regulation and the actual that communication can solve and share the knowledge in safety together for improving the safety procedure. Finally, all the involve parties have to keep in mind that safety is the first priority for working in the dangerous workplace like construction project.

Mr. Somjate Chatutewaprasit made a research which main objective is to investigate the effective communication methods in managing construction safety and health. His sub-objectives were also explored as follows: (1) to conduct an exploratory study to identify communication methods in managing safety and health; and (2) to study problems in implementing the communication methods.

Conclusion

This study was concentrated on medium to large scale construction projects and focused on safety communication methods and the effectiveness of each safety communication methods.

For the main objective which is to investigate the effective safety communication methods in managing construction safety and health by using correlation between frequency (action) with level of safety awareness and level of understanding (output), to explain which safety communication are suitable with each situations are concluded as follow:

- Correlation analysis between Frequency of Safety communication methods and Level of Safety Awareness showed that safety communication methods do not have any correlation between each other. The meaning of this case is that if safety supervisors increase frequency of safety communication methods, the level of safety awareness in construction site would not increase following the frequency.

From this situation, the frequencies of safety communication methods are not related with safety awareness. Because of in construction site have many temporary workers so when temporary workers go out to work in agriculture field. Therefore construction should recruit the new workers who not have experience of construction work. The safety communication methods are maintained by safety supervisor, but level of awareness drop in a few months.

- Correlation analysis between Frequency of Safety communication methods and Level of New and Complex Safety Issue meant that correlation between safety communication methods with level of understanding of new and complex safety issue.

In this case, frequency of safety manual and procedure related with level of understanding of new and complex safety issue. Because of when project use new equipment or complex work methods, safety supervisor should put the work process in safety manual and distribute safety manual handbook to all workers. The process of work use cartoon to communicate to workers it easier than letters.

- Correlation analysis between Frequency of Safety communication methods and Level of Understanding of Safety Issue for Own Team and Subcontractor Team showed that there are correlations between levels of understanding of safety issue for own contractor team and safety issue for subcontractor team with safety newsletter and safety bulletin.

For correlation between frequency of safety communication methods and level of understanding of safety issue for own contractor team are related together. Safety newsletter and safety bulletin can communicate safety information such as report accident record, next activities and safety work process (from weekly work planning). Safety supervisor have to walk around and investigate workers and take pictures, after that put in safety bulletin to compare correct and incorrect work process to contractor team.

For correlation between frequency of safety communication methods and level of understanding of safety issue for own contractor team are related together. Safety newsletter and safety bulletin can communicate safety information such as report accident record, next activities and safety work process (from weekly work planning). Safety supervisor have to walk around and investigate workers and take pictures, after that put in safety bulletin to compare correct and incorrect work process to subcontractor team.

Perception of respondent of Effectiveness of Safety Communication Methods

Follow the result of this research, safety training is the best safety communication methods that safety supervisors using to communicate to all workers. The results showed that, all of safety supervisors that the researcher collected data from questionnaire, they are same perception that safety training is the best way to communicate with their workers. Because of safety training can transform all of safety information such as safety work process, checking how to check equipment before use. And then safety supervisors can investigate the workers work safety follow safety supervisor instruction, and safety supervisor can advice them in front of construction work area.
The main safety communication problems that related with subcontractor foremen and workers are lack of workers experience and lack of participation with safety supervisor. In case of lack of experience it tough to teach the workers who never work in construction site to work safety and use PPE. However safety supervisor should participation with workers and advice them repeatable, then workers will improve themselves.

His thesis abstract is copied and posted.

ABSTRACT

Due to the most important in order to get success and effectiveness in safety program is communication of the human skills. However, most accidents come from the lack of communication. The lack of communication from top manager to the workers could be damaged the safety management. Therefore, it is necessary to have the study on an effective safety communication in construction project. The objectives of the study is 1) to conduct an exploratory study to identify communication methods in managing safety and health, and 2) to study problems in implementing the communication methods.

The common ways of safety communication method are Safety training, Project meeting, Toolbox meeting, Safety orientation, Safety feedback, Safety incentive, Safety manual and procedure, Safety Poster, Safety Sign, Safety newsletter, Safety bulletin, MSDS, Safety suggestion box, and Morning talk. The problems in implementing the communication methods are Literacy, Time for explaining, Lack of workers experience, Challenge behavior of workers, Lack of participation with safety supervisor, Attitude of workers with safety program, Site environment, and Length of communication.
Data was collected by using face-to-face interviews. The analysis was based on the statistic techniques and interpreted in meaningful ways and presented in this study. Finally, the effective safety communication methods in managing construction safety and health were concluded. Accordingly, the results of this study can be used for safety management in order to provide and improve the effective safety communication methods. Safety communication problems are related with safety communication in construction site.

Quality Function Deployment Approach In Condominium Construction Project: A Case Study

Improving customer satisfaction has been identified as one of the most important challenges facing businesses over the past decade. As industries and companies worldwide face increasing competition, slower growth rates, and price pressures, greater attention continues to be placed on customer satisfaction (Johnson et al, 1991 cited in Syed et al, 2003)

Vietnam is experiencing many changes as it integrates into the global economy. As one of the developing country on its way towards the world economy, Vietnam now is opening the free market for the economy development in almost all its fields. With a growing population of more than 80 millions, property development is playing a very important role in the national economy. With its newly entrance in the World Trade Organization (WTO), opening the real estate market to international arena is inevitable. Furthermore, the Vietnamese government has made changes in regulation to rouse the market by introducing Decree 17CP which is considered an “opened door” policy for the real estate market (Vietnam Economy News, 2006). According to the CB Richard Ellis report (2006), the real estate industry has so far attracted 18% of total FDI in Vietnam.

Residential housing in Vietnam is a rapidly growing business especially in big cities such as Hanoi and Ho Chi Minh City. The demand of residential housing, especially condominium units has increased compare to previous years. Due to the increasing demand, Vietnam now is a potential market for both local and oversea home builders. Satisfied customers are said to be the back bone of the home building industry. Home builders have come to realize that the ability to correctly assess the desirability of their housing units and the quality of service is crucial to their financial viability. But Vietnam housing developers faced many problems since they do not know what exactly the customers need. This is because different customers have different needs. And to address this question, developers’ answers is prioritization and take into account the customers’ needs and try to satisfy each one according to what’s important.

Ms. Pham Nguyen Quynh Huong made a research which aimed to improve the quality of apartments and give customer satisfaction in terms of housing quality. Her study objectives were: (1) identifying the needs of the customers in housing quality (focus on condominium residential) using QFD approach; (2) develop a House of Quality for apartment based on customers’ demands; and (3) give recommendation to the developer so that they could better allocate resource in order to offer the improvement according to the clients’ requirements and needs.

Conclusion

One aspect that the construction industry can improve is its ability to determine the customers’ requirements, interpret them and transfer these requirements into plans to construct a facility. This research was conducted to identify factors influencing the quality of condominium. The first step is to list the customer requirements or needs. These needs were divided by two groups, general condition factors and internal condition factors and then evaluated for theirs importance indicated by assigning a number from 1 to 5. After that the satisfaction level of actual status based upon the respondents’ perceptions were evaluated. Gap analysis was done to examine the differences between the importance of these factors and their level of satisfaction of actual status towards the customers’ attitudes. The purpose of this was to evaluate how close to optimum (most satisfactory) the present condominium was compared to each of the defined needs. Based on the survey conducted in two new urban areas Trung Hoa – Nhan Chinh and My Dinh – Me Tri in Hanoi, the general factors which have the largest gap are basic facilities, workmanship, building materials, and current amenities of the over all project. The internal factors which have the largest gap are living room, kitchen, height of flat and special installation.

Quality Function Deployment was applied on this case as a tool to prioritize important point that could offer improvements according to the customers’ requirements and needs. The result indicated that the architecture work play a very important role to improve the quality of condominium. It has the highest relative degree of importance which is 26% in improving the overall general condition and about 65% in improving the overall internal condition. Construction work has relative degree of importance of 13% in improving the general conditions and 25% in improving the internal condition. The research indicated that good specifications ensure no miscommunication between the designers and the builders on site to reduce any mistake with unsatisfied customers. Besides, standard requirements are needed to be set by the developer to avoid any improper construction work. Stricter control and supervision should be established to ensure that the building is build according to the design and method specified. Further more, good building management also make a better home quality for the customers.

The development of House of Quality can be used as a guide to focus on what the customers want throughout the planning, design and implementing condominium project.

Recommendation for developer

In general, the house of quality aims to let the developer know the needs of the customers. As a developer, its his duty to satisfy all the needs of the customers. However, due time constraints, budget constraints of the developer, the developer cannot improve all the needs. The HoQ serves to guide the developer in choosing which solution based on the tabulated absolute important score. The developer should concentrate more on the solution that have high score of absolute importance. The developer can also set priority base on interaction matrix (the roof of House of Quality). The developer can decide on the type of solution effectives

In this case, from the absolute importance score, the group with the highest score in both general conditions and internal condition is architecture. This is because good specification and standard requirement in the design ensures the quality of the apartment. Therefore, the developer should concentrate on the architectural work and then move to the following group.

Her thesis abstract is copied and posted.

ABSTRACT


Many developers has been investing and developing in residential housing to cope with the increasing demands, especially condominium residential. Satisfy the need of customers is the critical factor which contributes positively and significantly to the business. In order to get better satisfaction from customer, home builders need to know what the qualities the customer desires are and how they can best provide what their customers want.

The study aims to identify the needs of the customers in housing quality especially in condominium project. Quality Function Deployment (QFD) is an effective approach with a wide range of applications. This study present a application of QFD in construction projects with special focus on middle- class condominium scheme. QFD approach was used as a tool in improvement quality of condominium project. House of Quality was developed to interpret the needs of customers. The developers therefore can better allocate resource in order to offer the improvement according to the clients’ requirements and needs.

Making Construction Employment Decent Work: Dynamic Modelling Of Workers’ Willingness To Be Employed In The Industry

Employment is widely recognised as the best route out of poverty. The construction sector which is the backbone of a nation’s development has a very high potential of employment creation. Construction is a labour-intensive activity and has the capacity to provide extensive employment with very little investment. It is considered an ‘employment spinner’ which provides employment for the least educated and marginalized poor. (ILO, 2001)

Creating jobs is not sufficient. There are many people who work, but are poor. They do not have adequate income and protection. The ‘working poor’ are people who have jobs but still cannot lift themselves out of poverty (World Bank, 2005). A job which is not ‘decent’ enough, that is, a job which does not give a fair income, security in the workplace and social protection for families and better prospects for personal development and social integration will not improve the quality of peoples’ lives. Hence, creating ‘decent work’ which ensures decent levels of income and living standards is essential. (ILO, 2004)

Regrettably, construction employment is not considered ‘decent’. Construction work is considered as “dirty, difficult and dangerous”. Studies point out that people work in construction sector out of necessity rather than out of choice (Mitullah and Wachira, 2003). The temporary and casual terms of employment, the practice of recruitment through subcontractors and intermediaries, lack of opportunities for training and skill formation, continuous mobility of workforce and health and safety problems contribute to the unattractiveness of a career in construction. (ILO, 2001).

Moreover, the workers stay most of their lives as construction workers no matter what hardships they have to go through. Generally, construction labourers are not a transient population (Mitullah and Wachira, 2003). They work in the industry for 20-30 years. Hence, the question is what makes the workers willing to be employed in construction? Is it only the subsistence requirement which makes them willing?

Further, income from construction job is generally very low. In that case, what do the poor achieve from the construction employment? Can the job fulfil their aspirations? Is the job helping the workers to improve the quality of their lives? Are the peoples’ lives better than before? Or are they still poor with low levels of quality of life?

The prevailing practices regarding labour in the construction industry such as outsourcing labour and temporary and casual terms of employment lead to deteriorating working conditions (ILO, 2001). This raises a question whether the welfare of the workers is taken care of in the construction industry. Can the workers’ life quality deteriorate instead of improvement, due to these bad working conditions? Is it possible for them to change the quality of their lives with construction employment which is not considered ‘decent’? How can the job be made ‘decent’ so that workers do not have to fight daily for their lives?

The negligence of the workers’ welfare may be due to the nature of the industry which considers labourers as ‘production cost’ only. Reducing costs and maximising profits have been the aims of the industry most of the time and workers’ welfare is often neglected (ILO, 2001). It should be noted that workers are one of the major stakeholders of construction projects. Their satisfaction in the process of production shall not be neglected. Thus, it is essential for the industry to take initiatives to study about workers’ aspirations and improve their lives so that the production process benefits all stake holders.

Ms. Ramya Kanaganayagam made a research that investigated on what can be done to improve the job and workers’ lives. The objectives of her study were: (1) identify factors which determine the quality of construction workers’ lives and influence workers’ willingness to be employed as construction workers; (2) using System Dynamics approach, develop a model to understand the dynamics of workers’ willingness to be employed as construction workers; (3) using the model, study the influence of factors which can be leveraged by construction companies to improve construction workers’ lives and make construction employment ‘decent work’.

The following conclusions were reached from her study.

1. Employment provides opportunities for people to fulfil their needs. The importance of needs and the extent to which these needs are fulfilled determine the quality of life. Hence, it can be concluded that employment determines quality of life. The satisfaction or dissatisfaction resulting from fulfilment of needs will determine the willingness to continue work and or the motivation to perform in work.

2· Work which is not ‘decent’ may erode the quality of life. Insecure and inadequate income, necessity for severe physical exertion, exposure to health and safety hazards, exposure to poor living conditions, requirement for separation from family, lack of free time, gender discrimination which result due to the nature and terms of construction employment erode the quality of workers’ life. Though, economic conditions of the construction industry play a major role in determining the severity of these conditions. When economic conditions are good, that is, when the labour supply is less than the demand, these conditions are not so severe.

3· Factors which determine the quality of a worker’s life and affect the worker’s willingness to be employed in construction are almost identical. The need to improve the quality of life and improvements achieved as a result of the employment in the quality of life make workers willing to be employed in construction. On the other hand factors which deteriorate the quality of life reduce the willingness.

4· The pressure to generate income and satisfaction resulting from fulfilment of certain higher level needs increase workers’ ‘willingness to be employed as construction workers’. Dissatisfaction resulting from bad conditions of work; and other available opportunities reduce the willingness. The commitment from employers or construction companies reduces dissatisfaction, increase satisfaction and thereby increase workers willingness to work in construction and attachment to the particular company.

5· The adverse nature and terms of construction employment cannot be avoided. However, employers or construction companies can make construction employment ‘decent’ by leveraging the following factors: working hours and wages, social security and welfare, occupational safety and health measures, skills development and gender equality.

Her thesis abstract is copied and posted.

ABSTRACT
Employment is considered the best way out of poverty. The construction industry has a very high potential of employment creation, especially for the uneducated and poor. However prevailing practices regarding labour in the construction industry such as outsourcing and recruiting on temporary and casual terms, lead to deteriorating working conditions. It is sometimes viewed that construction employment is not ‘decent’ and a mere exploitation of cheap labour. This research aimed to investigate how construction employment is shaping workers’ lives, what makes the workers willing to work in construction and how the job can be improved. Qualitative data gathered from case study and interviews conducted in Thailand and a review of literature helped to develop a System Dynamics model to investigate workers’ willingness to work in construction. The study reveals that insecure and inadequate income, necessity for severe physical exertion, exposure to health and safety hazards, exposure to poor living conditions, requirement for separation from family, lack of free time and gender discrimination erode workers’ quality of life and reduce their willingness. The pressure to generate income and satisfaction resulting from fulfilment of certain higher level needs increase willingness. The study also investigates possible actions by construction companies such as limiting overtime hours, provisions for accommodation and welfare facilities, safety and health measures, skills development and gender equality which could improve workers’ willingness and their life.

Modeling the Dynamics of Heavy Equipment Management Practices and Downtime in Large Highway Contractors

Thanapun Prasertrungruang1 and B. H. W. Hadikusumo2

Introduction
In the construction industry, the tangible benefits of using machinery are obvious as greater productivity, performance, cost reductions, and improved competitiveness for contractors can be obtained. This is particularly so in highway construction organizations where a variety of construction equipment has been heavily deployed as a major resource in generating work production. However, managing construction equipment effectively is not an easy task since the contractor is required to dynamically interact with various parties and activities. Highway contractors are thus invariably plagued by a number of equipment management problems. Downtime resulting from machine breakdown during operations is of prime concern in views of contractors (Prasertrungruang and Hadikusumo 2007). Indeed, equipment practices and policies are some of the most important factors that affect machine downtime significantly (Elazouni and Basha 1996). Variation in practices regarding the flow of factors (e.g., spare parts, operators, equipment, mechanics, and information) over time is claimed as a major cause of the dynamics of downtime (Nepal and Park 2004). Nevertheless, to date, little efforts have been made to study the effect of less tangible factors (e.g., equipment management practices) on downtime, which control the dynamic behavior of the system, particularly in the construction context (Edwards et al. 2002). Hence, this research attempts to address this issue by exploring and highlighting key dynamic structures of equipment management practices and downtime inherent in each particular stage of machine lifecycle and then uses them as a framework in building a system dynamics (SD) simulation model. Scope of this study covers merely on large highway contractors with five types of heavy equipment for highway construction (see Table 1) as machine weight is one of the major indicators of downtime and maintenance cost (Edwards et al. 2002). It is noted that weight interval for each equipment type is also assigned in order to allow for machine generalization.

Applications of SD in Construction Decision-Making

By nature, construction project management is considered as a complex system (Richardson and Pugh 1981). Several researchers have adopted a SD methodology to model construction project.
For instance, Richardson and Pugh (1981) introduced a SD model for project management. This model concentrates on schedule overrun controlled by the magnitude of the workforce and rework. Subsequently, large-scale projects using fast-track procurement were modeled using the SD approach (Huot and Sylvestre 1985). The results reveal that the major problems in project failure are problems of quality, productivity, and worker morale. The SD was also used to model rework in construction (Love et al. 1999). Results show that rework is predominantly attributable to designer’s errors, design changes and construction errors. To solve this problem, teamwork between design and construction people, training, and skill development must be emphasized.

In the context of construction equipment management, the use of SD in modeling the dynamics of downtime is highly promising (Nepal and Park 2004). It was proposed that downtime and its consequences on construction equipment are significantly influenced by many factors: equipment-related factors, site-related factors, project-related factors, company’s policies, crew-level factors, site management actions, and force majeure.

Equipment Management Practices and Downtime
As the challenge of selecting, managing, and maintaining the equipment asset becomes more complex and costly every day, effective management of these assets directly fuels the success for business by significantly minimizing direct and indirect costs of equipment while still concurrently ensuring high availability of equipment productivity. Realizing the right practices on equipment management is dependent on where the machines are in their lifecycle. Indeed, equipment management practices can be categorized into four groups: machine acquisition, operations, maintenance, and disposal. Key practices in each particular stage of machine lifecycle include, for example, procurement decision approach (equipment acquisition stage), safety and training programs (equipment operational stage), schedule PM inspection and standby repair-maintenance facilities (equipment maintenance stage), equipment economic life and replacement decisions (equipment disposal stage) (Prasertrungruang and Hadikusumo
2006).

When the machine fails during operations, it is said to be “down or unavailable” which means that it is waiting for repair and thus incurring downtime (Nagi 1987). Typically, downtime duration consists of three major components, including (1) administrative time: time required for communication flow from user to manufacturer, time required for commercial formalities, and hours necessary to report a machine failure and give work directions for maintenance; (2) supply time: time when repair is delayed due to non-availability of spare parts and materials necessary to perform maintenance; and (3) active repair: time when technicians are working on the equipment to actually commission it including both preventive and corrective maintenance (Komatsu 1986). To minimize the consequential impact of downtime, contractors may opt to seek for substitute equipment, wait until the repair finished, accelerate work pace, modify work schedule, or transfer crews to other works (Nepal and Park 2004).

The research methodology was divided into two parts: data collection and data analysis. For the Data Collection, the research uses data collected from face-to-face interviews with five large highway contractors located in Bangkok and the surrounding provinces in Thailand. An equipment manager with at least 10 years work experience was selected as the interviewee for each of the participated contractors. A convenience sampling technique was used in identifying not only the sample contractors but also the interviewees. The interview checklist is in a semi-structured format in order to cover both open and closed-end dialogs. During the interviews, causal relationships between each pair of variables were disclosed and confirmed by the interviewees. For the data analysis, data collected from all five large contractor cases was administered using within-case as well as cross-case analysis approaches (Eisenhardt 1989). First, within-case analysis was employed to reveal the data characteristics for each particular contractor case. Then, attempt was made to draw the integrated picture among all contractor cases regarding the generic feedback structures of equipment management practices and downtime using cross-case analysis approach. The generic feedback structures were rechecked again with experts for validation until they are satisfactorily valid. Next, the generic feedback structures were used as a foundation in constructing the generic SD simulation model, using Powersim software. During this step, a number of stock and flow diagrams, which are all connected together in the generic SD model, have been identified. “Stock” represents accumulated quantities that change over time, while “flow” controls the changing rate of quantity going into or out of the stock (Sterman 2000). After data from each of the five contractor cases was input separately into the generic SD model, five applied SD models could be launched. Each of the applied SD models was then subjected to a number of validation tests to ensure that the model is structurally and behaviorally valid. Upon passing all validation tests, the generic SD model is deemed valid in representing the equipment management system as related to downtime of large contractors.

Conclusions
The aim of this paper is to give an insight into the dynamics of equipment management practices and downtime in large highway contractors. The dynamics of equipment management practices and downtime are presented through five generic feedback structures: machine acquisition, operations, maintenance, disposal, and downtime. Each of the feedback structures is interrelated and used as a framework in constructing the generic SD simulation model. A number of validation tests were used to ensure that the model is structurally and behaviorally valid.

To be successful in managing downtime, equipment management practices must be perceived as a combination of multiple feedback processes, which are interrelated to machine downtime. Indeed, downtime is interdependent and stimulated by three reinforcing cycles: schedule disruption and acceleration, operator schedule pressure creep, and mechanics’ schedule pressure creep. Even though downtime can be tackled through adoption of three balancing cycles (i.e., repair outsourced adjustment, operator skill adjustment, and mechanics’ skill adjustment), their expected benefits are always delayed, which retard or sometimes deteriorate the scenarios if contractors opt to stop the improvement processes. In addition, downtime is partly minimized through the reduction of disruption of work sequences by activating another two balancing cycles (i.e., rental machine adjustment and subcontractor adjustment). With high downtime, PM efforts are eroded, which in turn even worsen the scenarios as the reinforcing cycles of operator schedule pressure creep and mechanics’ schedule pressure creep have now been activated. However, contractors can mitigate this problem through adoption of balancing cycle of dealer maintenance services adjustment and the reinforcing cycle of management commitment in proactive maintenance.

Future work could be directed toward studying the interactions among equipment policies that have been addressed in the study. This would be useful especially when there are multiple performance tradeoffs involved among the stated policies (e.g., adopting participatory multi-skilled training policy may cause more fatigue to equipment operators and thus reduce the operator’s effort in performing the autonomous maintenance policy). Additional case studies are also needed to validate the effectiveness and practicability of the proposed system and make further adjustments for a more reliable system.

This paper is part of the Journal of Construction Engineering and Management, Vol. 135, No. 10, October 1, 2009. Full paper is available upon request.

Abstract is copied and posted.

Abstract: Machine downtime is invariably perceived as one of the most critical problems faced by highway contractors. Attempts to reduce downtime often result in failure due to the dynamic behaviors between equipment management practices and downtime. This paper is thus intended to highlight the dynamics of heavy equipment management practices and downtime in large highway contractors and utilizes them as a framework in constructing a simulation model using a system dynamics approach. Face-to-face interviews were conducted with equipment managers from five different large highway contractors in Thailand. The finding reveals that, to be successful in alleviating downtime, contractors must view their practices on equipment management as an integration of multiple feedback processes, which are interrelated and interdependent with downtime. Based on various validation tests, the simulation model is deemed appropriate in representing the equipment management system as related to downtime of large highway contractors. The research is of value in facilitating better understanding on the dynamics of equipment management practices and downtime as well as their interdependency.

DOI: 10.1061/_ASCE_CO.1943-7862.0000076

CE Database subject headings: Maintenance; Dynamic models; Construction equipment; Contractors; Systems management; Construction industry; Thailand; Contractors; Highway and road construction.


1Researcher, Construction Engineering and Infrastructure Management,
School of Engineering and Technology, Asian Institute of Technology,
Pathumthani 12120, Thailand (corresponding author). E-mail:
st101533@ait.ac.th

2Associate Professor, Construction Engineering and Infrastructure
Management, School of Engineering and Technology, Asian Institute of
Technology, Pathumthani 12120, Thailand.

4DCAD-Safety: visualizing project scheduling and safety planning

Damrong Chantawit, Bonaventura H.W. Hadikusumo, and Chotchai Charoenngam

Construction Engineering and Infrastructure Management, Asian Institute of Technology, Bangkok, Thailand

Steve Rowlinson

Department of Real Estate and Construction, The University of Hong Kong, Hong Kong

Introduction
Safety is considered as one of the project’s success factors. Poor safety management may result in accidents that impact on human, economic, and legal issues. The human impact involves both physical and psychological pains suffered by worker and his family. The economic impacts increase direct and indirect costs of the organization. In addition, there is the legal impact that relates to a breach of safety regulations. Therefore, it is necessary to consider safety and health as a project success factor along with other project success factors, such as time, project and quality.

Safety management covers from planning to implementation. Safety planning must be conducted prior to a construction activity for determining safety measures needed. The planning is the first fundamental step for managing safety. However, there is a problem with the conventional safety planning in construction project management.

The problem is related with loose relationships of plans: safety plan, project scheduling, and project drawings that are in 2D representation. This problem causes difficulties in using and analysing safety plans. For this reason, Kartam (1997) integrated safety plan with project scheduling. However, project design (i.e., drawings) was not included in his study. Without integrating project design, safety engineer will have difficulties in visualizing how the site will look; and this is important in determining safety hazards occurring.

This paper discusses our 4DCAD-Safety research that aims to integrate 4DCAD (i.e., 3DCAD objects and project time schedule) and construction site safety plan for assisting users in analysing and utilizing safety plans in terms of what, when, where, and why a safety measure is needed. This paper explains how a 4DCAD-Safety application is designed, developed, and tested.

Construction safety planning
Safety planning plays its important roles in construction project management for reducing unnecessary cost and delays related to undesired accidents. Safety planning ensures that safety will be taken into account along with costs, schedules, quality and other important job goals.

Safety planning includes identifying all potential hazards and hazardous operations and safety measures. This safety planning can be enhanced into safety risk management system by adding more tasks: identifying safety hazards, classifying risks, controlling the risks and monitoring the implementation. Among these tasks, safety hazard identification is the most important, since failure to identify safety hazards means safety measures are not adequately investigated.

Safety planning is traditionally managed separately from project planning/scheduling task. However, there must be a method to link these planning tasks. There are two reasons for explaining why the link is important. First, the safety plans must be linked with the construction schedule because safety engineers need to identify when safety measures on the safety plans must be used. Secondly, the safety engineers have to use construction drawings for developing the safety plans because these drawings have the information related to why and where safety measures are chosen. Kartam (1997) has developed Integrated Knowledge Intensive System for Construction Safety and Health Performance Control (IKIS-Safety System) that integrates safety and health requirement (i.e., safety plan) into a CPM-based project schedule. This integration provides a way to manage safety and health performance proactively rather than reactively, and alert construction manager and all involved parties when reviewing the CPM schedule (MacCollum 1995: 130; Kartam 1997). IKIS-Safety system helps users to know when a safety measure (i.e., what) is used since it is integrated with project scheduling; however, IKIS-Safety does not support adequate information for analysis. In our study, we consider that providing adequate information for safety engineers to analyse a safety plan in terms of why, when, where a safety measure (i.e., what) is important.

In order to provide adequate information, integrating the safety plan with 4DCAD, i.e., 3D object plus scheduling, is crucial. The 3D object should be used because it provides What- You-See-Is-What-You-Get (WYSIWYG) benefit. In conventional construction project, most of the objects are represented using 2D drawings. Collier (1994) noted that this 2D representation is a bottleneck since engineers have to convert this drawing into 3D mental picture which is a tedious task. Since creating this 3D mental picture is already a tedious task, combining the 2D drawing with safety planning increases the difficulty. As a solution, 3D model computer representation can be adopted.

4DCAD technology for managing construction projects
Koo and Fischer (2000) defined Four-Dimensional Computer Aided Design (4DCAD) as a result of integrating 3D objects to the fourth dimension, time. The 3D and time integration allows users to run a visualization of the planned construction process of the project. The first idea was conceived in 1986–1987 when Bechtel collaborated with Hitachi Ltd to develop the Construction CAE=4D Planner software (Simons, 1988 cited in Rischmoller, 2000). The 4D model aims to overcome deficiencies of the traditional planning and control, such as bar charts and network diagrams, that do not effectively represent and communicate the spatial, temporal, and non-precedence information.

In conventional project planning, a contractor has to abstract the visual description of a project design into a textual description of activities and construction schedule. Later at the construction stage, engineers have to visually conceptualize the sequence of construction, and the 3D mental model of construction objects for construction purposes. In 4D environment, this tedious process is eliminated since the 4D model explicitly represents the relationship between the description of a facility (3D object) and the construction schedule (McKinney and Fischer, 1998).

4DCAD facilitates 3D construction products to be visualized along with construction processes on a computer screen therefore users need not to interpret construction products and processes in their minds. In other words, users can visualize the construction processes, as they would be actually carried out in reality. Potential benefits of 4DCAD have been extended by adding additional dimension, such as resources constraint management (Sripasert and Dawood, 2002), and nD-modelling (Rowlinson and Yates, 2003; Lee et al., 2004).

The benefit of 4DCAD can also be used for safety planning purposes in which the 4DCAD technology can be integrated with safety plan for providing safety engineers for analyzing what, when, where, and why a safety measure is needed. This integration is called 4DCAD-Safety.

4DCAD-Safety

System functionalities
4DCAD-Safety application is designed to facilitate safety engineers to analyse and utilize a safety plan. For this purpose, necessary information, i.e., 1) what safety measures are needed, 2) why, 3) where, and 4) when they are needed, must be provided. The information related with type of safety measures can be stored in a database, so that engineers can retrieve this information when they need it for planning safety measures in a project. When the engineers have to determine type of safety measures need to be used, their decision is influenced by two aspects: the physical condition of the project, represented in project designs; and the project progress, represented in a project schedule. The physical condition affects engineers’ decision in terms of where and why the safety measures are needed. Similar tasks conducted in different conditions may need different safety measures, e.g., constructing a column at the perimeter of a building has different hazard exposure compared to constructing a column at the centre of the building. This means safety engineers need to know where the safety measures will be used in order to analyse why they need to be used. The other aspect, project progress, also affects the reason for why a safety measure is needed because project progress may temporarily create different safety hazards.

In order to include what, why, where, and when aspects, the 4DCAD-Safety is equipped with three main components: 1) 4DCAD simulator, 2) safety library and plan, and 3) 4DCAD-Safety simulator. The 4DCAD simulator is used to simulate the project progress for a specific date. The safety library and plan are used to determine what types of safety measures are needed. Finally, the 4DCAD-Safety simulator is used to simulate specific safety measures chosen for a specific project progress. In other words, the simulation generates the project progress at a specific date and safety measures related; and this is useful for the engineers to analyse what safety measures are needed, why, when and where they are needed.

A case example for illustrating the 4DCAD-Safety is presented below.

4DCAD simulation. The 4DCAD simulation engine aims to generate, manipulate and simulate the 4DCAD model. Before generating the 4DCAD model of the whole project, all subschedules from the subcontractors need to be combined into one main schedule otherwise some construction products may not be shown during the simulation. Hence, the first feature provided in this function is to combine subschedules of subcontractors into a main schedule of a contractor. (Note: this feature is optional.)

The 4D simulation can be obtained by making the 3D objects visible or invisible according to the construction scheduling. Ongoing and completed 3D objects are set as visible while the rests are set as invisible. The ongoing objects are represented in blue colour, while the completed objects are in green.

Safety library and planning function. A safety plan contains safety measures to prevent accidents. In order to generate a safety plan, 4DCAD-Safety is equipped with two safety features: safety library and safety planning.

A safety library contains several safety data collected from regulatory standards and safety engineers’ experience, e.g., installing a guardrail to protect workers from falling from an open slab. Due to the nature of a library as a storage function, the safety library may have a lot of safety data; and this creates difficulties for a user to find the specific safety data in the safety library. For solving this problem, a keyword system is used to filter safety data. For example, when a user filters the safety library with the ‘Piling’ keyword, every safety data holding this keyword will be shown, such as 1) use earmuff, 2) use safety helmet, and 3) use eyes protection.

A safety plan is created by assigning the safety data, compiled from the safety library, into an activity. The relationship between construction task (or activity) and safety data is illustrated in Figure 1.

System architecture
4DCAD-Safety system architecture consists of four parts (see Figure 2): 1) MS ProjectTM, 2) AutoCADTM or AutoDesk Architecture DesktopTM, 3) Database, and 4) the 4DCAD-Safety application (i.e., an interface application). The construction project scheduling is created using MS ProjectTM software. The advantage of using MS ProjectTM is in its ability to export a schedule file to a database file using an ODBC (Open Database Connectivity) function; and therefore the construction schedule developed using MS Project can be easily converted into a MS Access database. The system database is designed to store three categories of data: 1) safety plan, 2) imported construction schedules, and 3) 3D objects group. For visualizing construction products, AutoCADTM software is used for developing the 3D computer objects as well as displaying them for 4D simulation purpose. Reasons for choosing AutoCAD or AutoDesk are: 1) it supports functions that can be accessed using programming languages, such as Visual Basic, and 2) this software is commonly used in the AEC industry. One important function for the purpose of 4D simulation is ‘visibility’ property of AutoCAD in which this property can be turned-off to hide an object, and turned-on to display an object. In addition, rendered images in the AutoCAD can be saved in DFX file which then can be open as 3D objects using WorldUpTM, a virtual reality software. Viewing 3D objects in World Up facilitates a better visualization since user is provided with sophisticated walkthrough mechanism to explore the 3D objects. The last part, 4DCAD-Safety interface, developed using Visual Basic programming language, aims to integrate the system database and AutoCADTM or AutoDeskTM. ADO technology that connects objects (e.g., a list box, a combo box, and so on) to the system database through MS Jet OLEDB 4.0 Provider is adopted in this application. In relation to the connection between the 4DCAD-Safety interface and AutoCADTM, this study utilized ActiveX technology to control every object, method, property, and event of AutoCADTM.

Database design. The 4DCAD-Safety system database was developed using a relational database by using MS Access application. Its data can be mainly categorized into three main groups: products, processes, and safety plan. Figure 3 illustrates the database structure of 4DCAD-Safety system that consists of main tables (i.e., entities): ‘Group’, ‘4DLink’, ‘Task’, ‘SafetyLink’, ‘SafetyLibrary’, and ‘SafetyKeyword’.

‘Task’ table is needed to store main scheduling data from the MS project: TaskID, WBS, Task Name, Start Date, and Finish Date. From MS project schedule, this data must be exported to a MS Access database file. All construction activities in the MS Access database must be assigned into groups because some of the activities are not represented in the 3D models. For example, constructing column activity is usually elaborated into four activities: installing rebar, installing formwork, concreting, and stripping off the formwork; and this four activities can be grouped together to represent ‘constructing column’ activity which is linked into a 3D model of the column (see Figure 3). In order to group tasks from the ‘Task’ table and assign them to relate with a group of 3D objects, an additional entity so called 4Dlink table is created. In this 4Dlink, the relationship between ‘Group’ and ‘Task’ table is set as ‘a group can contain many tasks, but one task can be a part of a group only’.

The ‘Group’ table stores data of 3D objects such as group name, WBS, and work area. One group might contain one or more 3D objects that are similar and must be built at the same time, for example, a group of second floor slabs, which represent slabs from different areas.

In relation to safety planning, the ‘SafetyLibrary’ table is created as the library of safety data. It stores records of predefined safety measures collected from regulatory standard and safety engineers’ experience. For example, install a guardrail to protect workers to fall from an open slab. This safety library is used to create a safety plan stored in a composite entity, ‘SafetyLink’ table. This table relates several safety data in the library with a construction task in ‘Task’ table. This enables safety measures in a safety plan to be displayed along with construction products and construction processes being simulated in the 4D simulation. For example, the roof truss installation task needs some safety measures such as equipping a safety helmet, and providing a safety belt. When the 4D simulation reaches roof objects (construction products) and roof truss installation tasks (construction processes), these safety measures will be displayed.

The last table, ‘Safety Keyword’ aims to assist users to list the specific records of safety library based on their keywords, e.g., list all records of safety library related to a task, then users can choose suitable safety measures displayed. For example, when the users use ‘excavation’ keyword, the database will suggest safety helmet and install a temporary shoring, then the user may choose which measures are suitable.

4DCAD-Safety interface. The 4DCAD-Safety interface, developed using Visual Basic programming language, is designed for integrating system database and AutoCADTM or AutoDeskTM. The interface is mainly divided into three parts: 1) 4DCAD interface (see area 1 in Figure 4), 2) safety interface (see area 2 in Figure 4), and 3) viewing part (see area 3 in Figure 4).

The 4DCAD interface is designed for controlling the 4D components consisting of object groups, related tasks, and lists of tasks for providing the 4D generating function and the simulation function. The 4D generating function aims to generate relationships between the object groups and their related tasks, while the simulation function aims to run 4DCAD-Safety simulation. These two functions are the main objective of this application.

The safety interface is created for communicating a safety plan to user when its related 4DCAD model is being simulated (i.e., being constructed in real world). Moreover it also enables a user to develop a new or modify an existing safety library as well as integrate safety plans with 4DCAD model.

The viewing part, AutoCADTM or AutoDeskTM application, is to display 3D objects and 4D simulation. Each interface is designed to work consistently with others. For example, when, according to the scheduling, fourth columns are on being constructed (in the section 1 of Figure 4), the viewing part will display the columns being constructed (in the section 2 of Figure 4) as well as the safety measures related (in the section 2 of Figure 4).

The 4DCAD system can be further expanded into a virtual reality visualization by exporting the simulated 3DCAD into a virtual reality object (Figure 5). User can easily does a walkthrough to any location in the simulated construction progress. This virtual reality visualization can magnify the benefits of 4DCAD safety in terms of analysing and interpreting safety measures in terms of what, why and where the measures are needed. In addition, the visualization can also be used as a material for group discussion within safety engineers for safety knowledge socialization.

Testing and evaluations

Respondents’ opinions
In order to validate that the system can achieve the system objectives and benefits the construction industry, tests were conducted by two senior project managers and one senior project management consultant. The testers used the 4DCAD-Safety application, and then they were asked to answer a structured questionnaire. The questionnaire addressed two main issues: functionality, usefulness of the 4DCAD-Safety; and operability, easiness to use the system.

From Table 1, the result showed that the application is useful to assist users in analyzing construction sequence, informing spatial information and scheduling information. Moreover, the respondents were very satisfied with the application that provides them information to analyse safety planning information in terms of what, when, where and why safety measures are needed. They also considered that the application is relatively easy to use, except for generating a 4DCAD model. Generating the 4DCAD model is not easy because 1) it is difficult to develop a 3D model of a large-scale construction project, and 2) the process to link a construction scheduling and the 3D model is quite difficult. This is addressed for further research development.


System benefits and limitations
4DCAD-Safety provides general and specific benefits. The general benefits are related with the 4DCAD simulation features that have been investigated by previous researches. The specific benefits are uniquely related with the 4DCAD-Safety developed in our research.

The general benefits of 4D simulation are 1) the 4DCAD-Safety application visualizes 3D objects of a construction project, the disparity in participants’ experience or knowledge that lead to different interpretation is less significant and communication among participants can be improved (Koo and Fischer, 2000), and 2) the application can be applied to visualize and interpret construction sequence on a computer display rather than in their mind. This allows users to better understand construction sequence and detect potential problems in construction drawings as well as schedules prior construction starts (McKinney and Fischer, 1998; Kang et al., 2002).

There are two specific benefits related to the 4DCAD-Safety application. First, related with safety planning function, when construction activities are progressing according to the project calendar, the application can display safety measures that are required to carry out specific works. Secondly, since the displayed safety plan is related to the construction activities represented in 3D model, the application facilitates safety engineers to visualize spatial and physical information of construction activities and their products. This facilitates safety engineers to know and analyse what safety measures are needed to be installed, prepared, or provided for current activities and where, when, as well as why they are needed. For a better quality of visualization, 3D image rendered in AutoCAD can be saved as DFX file since this file format can be opened using World UpTM. One significant benefit of viewing 3D objects in World Up is that user can have a better walkthrough mechanism for exploring the objects (Hadikusumo and Rowlinson, 2001; 2003). As an additional benefit, the 4DCAD-Safety application has a feature for combining subcontractors’ schedules and a contractor’s schedule as well as their safety plans. This combination allows all safety plans from one organization to be communicated to other organizations since they might interact directly or indirectly in order to perform their jobs.

There are two limitations of the system: 1) the 4DCAD uses early start and finish for the simulation purposes. This must be further researched to include late start and finish, and 2) the 4DCAD uses scheduling information stored in MS Access database which is created by exporting the MS Project file to MS Access file. Therefore, the system does not support real time updating of the construction schedule.

Conclusion
4DCAD is an emerging powerful technology to manage construction projects. Several researchers have identified its advantages in terms of betterment of 1) project representation which reduces design interpretation among project members, and 2) understanding of construction sequences.

This 4DCAD technology can also be utilized to manage construction site safety. In this research, the 4DCAD is further developed into 4DCAD-Safety which supports information to safety engineers for analysing and utilizing what safety measures are needed, when, where and why they are needed.

The 4DCAD-Safety consists of four main components: AutoCADTM, Microsoft ProjectTM, Database, and 4DCAD-Safety Interface. The AutoCAD is used for modelling and displaying the 3D objects that represent the physical condition of a project. Microsoft Project is used for scheduling construction activities. Thus, by integrating the scheduling into the 3D objects, the 4DCAD technology is achieved. The database is used to store project scheduling exported from Microsoft Project, safety library and safety planning. Finally, the interface is developed to integrate the three components. The integration allows a safety plan to be simulated according to the 4DCAD simulation. Additional technology, Virtual Reality, can be added to create a virtual walkthrough mechanism. This technology facilitates users to be flexible in observing the virtually real site condition progress from any positions; and therefore a better understanding of what safety measures are needed, when, where and why they are needed is obtained.

This paper was published in the journal for “Construction Innovation 2005; 5: 99–114”. Full paper is available upon request.

The abstract is also copied and posted.

Abstract: Safety planning in construction project management is separated from other planning functions, such as scheduling. This separation creates difficulties for safety engineers to analyse what, when, why and where safety measures are needed for preventing accidents. Another problem occurs due to the conventional practice of representing project designs using two-dimensional (2D) drawings. In this practice, an engineer has to convert the 2D drawings into three-dimensional (3D) mental pictures which are a tedious task. Since this conversion is already difficult, combining these 2D drawings with safety plans increases the difficulty. In order to address the problems, 4DCAD-Safety is proposed. This paper discusses the design and development of 4DCAD-Safety application and testing its usefulness in terms of assisting users in analysing what, when, where and why safety measures are needed.

Key words: accident prevention; computer aided simulation; computer graphics; hazards; Safety

Address for correspondence: B.H.W. Hadikusumo, Assistant Professor, Construction Engineering and Infrastructure Management, Asian Institute of Technology, Bangkok, Thailand. E-mail: kusumo@ait.ac.th

Virtual Construction Negotiation Game – An Interactive Learning Tool for Project Management Negotiation Skill Training

Charnkurt Yaoyuenyong (*) ; B.H.W. Hadikusumo (*) ; Stephen O. Ogunlana (*) And Sununtha Siengthai (**)

Introduction

Negotiation is an important aspect of construction projects. Negotiation can take place at any stage of a construction project. Hence, the ability of engineer-managers to negotiate effectively is crucial for success or failure of the project. In spite of this importance, proper negotiation-skill training is not well addressed within the construction industry. Negotiations are an important activity but they receive little research or educational attention (Dudziak and Hendrickson, 1988). Engineering managers seem to learn negotiating skills only through experience and observation (Smith, 1992).

The purpose of our research is to develop a new and innovative computer tool for training negotiation skills. Therefore the system called Virtual Construction Negotiation (VCON) was developed. It is an internet multi-user game that allows users to play the game across the Internet so that trainees can freely play a simulated contract negotiation of a construction project with other users under an engaging and dynamic virtual environment.

In this paper, fundamental knowledge of negotiation is briefly reviewed. Following that, the VCON system – Virtual Construction Negotiation game – is introduced. Discussion on system design is also included. Finally, the testing of VCON system, conducted with a selected group of construction management students in order to evaluate the operability and playability of the game, is presented.

Fundamental Knowledge of Negotiation

Negotiation is defined as a joint decision-making process of two or more parties working together to reach a mutually acceptable agreement over one or more issues (Cohen, 2002). Negotiation can be classified into two broad categories: distributive negotiation (positional bargaining) that usually results in a win-lose situation and integrative negotiation (interest-based) that results in a win-win situation (Raiffa et al., 2002).

Any negotiation takes place at two levels. First level involves negotiation of the substantive issues (e.g. contract price). The next level of negotiation refers to the procedure for dealing with the substantive issues (Fisher et al., 1991). This ‘upper’ level dictates how one and the other party play the game of negotiation. For instance, one can negotiate by hard positional bargaining, by cooperative approach, or by some other methods (Fisher et al., 1991).

When dealing with substantive issues, negotiation can be represented as shown in Figure 1. If the highest price the buyer is willing to pay is greater than the lowest price the seller can accept (b > s), then the agreement is possible, otherwise no agreement would be possible. The range in the middle between these two reservation prices is referred to as ZOPA (Zone of Possible Agreement). The problem with ZOPA is that both parties usually have an imprecise reservation price and make no formal attempt to assess probabilistic information about the other’s reservation price (Raiffa et al., 2002).

Figure 1 - Zone of Possible Agreement (adapted from Raiffa et al., 2002)

Fisher et al (1991) argued that BATNA (Best Alternative To a Negotiated Agreement) concept can also be used as an effective way to establish the reservation price. By establishing a realistic reservation price based on BATNA prior to a negotiation, not only can it increase the likelihood of a successful deal, but also improve one’s confidence and bargaining power on the negotiation table. The negotiation process will become more complex if several issues are included in the negotiation because negotiators are now required to establish not just one but several reservation prices for all issues. In this circumstance, a careful preparation and systematic planning must be carried out prior to the negotiation.

Additive scoring system can be used to plan the negotiation process. The negotiator is urged to prepare a template for the up-coming negotiation similar to Table 1. This template lists all issues to be negotiated, importance of each issue, and potential alternatives. The negotiator can systematically convert negotiating elements of subjective nature into quantitative figures. For instance, since issue no.6 is the most important for John (Table 1), he would rather go from A to E than go from worst to best on any other issue. In addition, using scoring template, the negotiator can determine the minimum acceptable score (i.e. the reservation point).

Table 1 - Additive Scoring Template (Adapted from Raiffa et al., 2002)


Virtual Construction Negotiation Game (VCON)

One of the most widely used methods is classroom simulations in which students are assigned to take different roles in pre-defined negotiations (Raiffa et al., 2002). The negotiations are normally simplified so that inexperienced students do not get confused with the subject matter. Prior to the negotiation, they are given common information about the scenario as well as issues to be resolved. Each side is also supplied with confidential information regarding their reservation prices on negotiating elements. After the deal is reached, each student is evaluated according to a pre-defined scoring system. A notable research regarding simulated negotiations was conducted by Dudziak and Hendrickson (1988). In their work, they developed a paper-based game of simulated contract negotiation between a gas company and a design-and-build construction firm. The concept applied in this research was similar to classroom simulations discussed earlier.

Without a doubt, this kind of paper-based simulated negotiation represents a highly effective tool for training negotiating skills. Nonetheless, such training method is still conducted under a conventional classroom environment in which there are several limitations that should be improved. This research therefore tries to further enhance the effectiveness of aforementioned paper-based negotiation simulation by alleviating current limitations.

Conventional classroom environment is normally perceived as boring and might not have enough motivational power to persuade the trainees to participate actively. This is primarily due to the fact that most students of the younger generations are more familiar with TV shows and digital entertainment such as computer games and the Internet. By converting a simulated negotiation into a digital game and adding key elements of a game such as fun, competition, and win/lose, it can enhance attractiveness and enthusiasm of the trainees towards the training contents through the concept of “learning by playing”. This would result in an innovative training tool that offers greater motivational power than other learning methodologies, especially conventional classroom teaching (Prensky, 2001). If properly designed, game-based training programs would provide a highly engaging environment for learning, while simultaneously delivering the substance that they are intended for (Filipczak, 1997).

Another obvious disadvantage of a conventional classroom setting involves time and place limitations. By contrast, utilizing a digital game by incorporating web technologies can surpass these boundaries and promote greater exposure to cultural diversity.

Given the reasons in the preceding paragraphs, it is highly recommended that the idea of on-line multi-player game should be adopted as a new and innovative tool for training negotiating skills. Hence, VCON – Virtual Construction Negotiation game –has been designed to incorporate many advantages of on-line multiplayer game (see Table 2 for a summary of key system features) while still maintaining the essence of negotiation. In the following sections, the paper discusses the development of VCON, overview of VCON, how it can be used to improve negotiating skills, as well as system testing to evaluate the effectiveness of VCON as a training tool.

Table 2 - Key Features of VCON Game


VCON Development: Requirement Identification

Development of the VCON game can be classified into four major phases, namely: game requirements identification, system design, software development, and system testing. In this paper, only the identification is discussed.

Information necessary for the development of VCON game was formulated. This phase was done in order to ensure that the contents of contract negotiation included into the game were accurate and practical. Therefore, interviews and questionnaires were conducted to gather necessary information from the construction industry. The main purpose was to identify the important elements usually discussed during contract negotiation for building projects. Several interviews were organized with experienced practitioners who had been involved in contract negotiations. Results from these interviews were used in developing the questionnaire for assessment of contract negotiation.

To collect data from the industry, a total of 202 questionnaires were randomly distributed to local contractors, consulting firms, as well as property developers in Thailand. In addition to paper-based questionnaire, an on-line questionnaire was developed in order to gather more data from construction firms in other countries. It was found that a total of 39 respondents (19.3%) returned the paper-based questionnaires, while additional 5 respondents participated in the on-line survey. Data collected was classified into two groups: contractors and owners (including consultants). To simplify the analysis, only data from respondents involved in contract negotiations of building projects were considered. In the questionnaire, respondents were asked to rank the importance of each negotiating elements (e.g. contract price, payment terms, etc.) according to their actual preferences of the most recent project. As a result, the rankings of elements according to their importance from owners’ and contractors’ perspectives were formulated as in Table 3 and 4 respectively.

Table 3 - Importance Ranking of Negotiating Elements from Owners’ Perspective

Table 4 - Importance Ranking of Negotiating Elements from Contractors’ Perspective


From the tables, it is obvious that both owners and contractors felt that time, cost, and quality were the three most important elements during the contract negotiation, while contract type and payment schedule were also fairly important. These were crucial issues that both sides are likely to compete over. It was also found that there were some elements important for one side, but were not so important for the other side (e.g. warranty period). Such elements offer an opportunity for trading of value between both sides. In summary, negotiating elements can be classified into four types according to their relative importance (see Table 5).

Table 5 - Classification of Negotiating Elements



Overview of the VCON Game

By utilizing web technologies, the game creates a virtual construction market comprising project owners and contractors (see Figure 2). Users can freely choose to play the role of either an owner or a contractor. They are encouraged to continually engage in simulated contract negotiations with other players by following the playing sequence as illustrated in Figure 3. The primary reason for creating a virtual market is to promote the realism of the game so that the users would be more encouraged to actively participate in simulated negotiations. They can try different strategies and learn from the outcome of negotiations. It is possible that a player may employ an aggressive strategy with little regard towards relationship, but later find out that such positional bargaining seriously hampers his or her long-term business relationship with other players. Ultimately, the more realistic and engaging environment in the virtual market would result in a far more effective learning experience.

By repeatedly playing these simulated negotiations, VCON users can develop four key skills:

􀂃 Ability to plan properly: Before each negotiation, trainees are required to carefully read necessary information given to them in a clear and systematic way (e.g., score sheet). Negotiation will only commence after both sides have notified VCON system that they are ready.

􀂃 Ability to identify ZOPA: Negotiation is pre-defined so that ZOPA exists for all negotiating elements. It therefore depends largely on the ability of trainees to find possible solutions within ZOPA that maximize the satisfaction of both sides.

􀂃 Ability to apply value exchange and value creation concept: Trainees should be able to improve attractiveness of the deal, where applicable, by trading values between parties.

􀂃 Ability to recognize and respond effectively to the other party’s tactics: The game keeps records of each trainee’s negotiating styles by asking the opponent ‘what do you think about his/her negotiation styles’ at the end of each game. The data can be used for future games. Users can review such information before they negotiate. Reviewing the other side’s style allows trainees to plan effectively how to respond the negotiating style (tactics) of the other party.

Testing of VCON Game

As a training tool, the VCON system should be able to fulfill its main objective of improving trainees’ negotiation skills. Moreover, it is crucial that the trainees must consider this game as both an effective and attractive tool that would help them in learning negotiation. Testing of VCON system was conducted through a workshop with 28 graduate students in the field of construction management. The workshop consisted of a brief introduction to the concept of negotiation and its importance in the construction industry, an introduction to the VCON game, and a negotiation playing session.

Case-Based Testing

The hypothetical case study given to students was a contract negotiation of a two-storey residential housing project (see Table 6). All students were asked to form pairs of two persons in which one student played the role of the owner, while the other took the contractor’s role. Before the negotiation, both sides were instructed to carefully review all the information given to them. Each player was given: 1) shared information (e.g. project profiles) known to both sides, 2) confidential information known only by each player, and 3) scoring template listing all issues and possible solutions for each issue.

As seen from Table 7, the scoring template was designed in a way that there were issues important to both sides (e.g. price and duration), and also issues of differing interests tradable between players (e.g., warranty and supplier list). Such scenario opens the door for a win-win situation whereby players can mutually reach an agreement that satisfies both sides. Once both sides reviewed all the information provided, they were allowed to play a simulated negotiation. During the negotiation, the VCON system provided a user interface that allowed players to negotiate under a real-time, highly interactive environment (see Figure 4). When the deal was reached, the system automatically calculated the scores and displayed the results on each player’s screen (Figure 5). Each player’s score depended largely on his or her ability to negotiate effectively. VCON system also provided a joint rating indicating how well both players performed in achieving a win-win agreement.

Users’ Experience on VCON System

After the workshop, all student participants were requested to complete an evaluation form. The questions generally asked about their opinions and experience towards the game in three major aspects including: 1) the game’s effectiveness in enhancing negotiating skills of the trainees, 2) the game’s applicability as a negotiation training tool, and 3) the game’s functionality (see Table 8).


From the evaluation results, it was found that students who attended the workshop generally agreed that their overall understanding of negotiation improved after this workshop. They strongly felt that they learnt how to systematically plan for negotiations. They also agreed that the game was an effective training tool for learning key negotiation concepts such as ZOPA, value exchange concept, and negotiating strategies and tactics.

In regard to the applicability of the game, students were asked to rate their opinions on several aspects, including appropriateness, effectiveness, efficiency, and attractiveness. According to the results, most students strongly felt that this game was a highly applicable tool for training negotiation in regards to the game’s appropriateness, effectiveness, and attractiveness. However, they seemed less convinced on the efficiency of the game. This might be because they needed some basic knowledge in negotiation to take full advantages of the game.

During the workshop, one interesting issue was experienced by students who were paired with people from other nationalities. They observed that cultural differences might have an impact on negotiating styles of the players. While some nationalities had a compromising style, others tended to be more aggressive and demanding. Another interesting fact was experienced by one pair who failed to reach a deal mainly because both sides employed hard bargaining strategies, while all other pairs were able to reach an agreement.

Conclusion

The primary aim of this research is to develop a new and innovative tool for training negotiation in the construction industry. To achieve the goal, the system called “Virtual Construction Negotiation Game (VCON)” was developed. It is an on-line game which utilizes internet technologies that enhance the capability of ordinary computer-based training tools. In this game, trainees can freely practice their negotiating skills with other users under an engaging and dynamic environment in which the simulation of contract negotiations is used as the training material. Several features are incorporated into the game including: realistic negotiation scenarios, real-time multi-player system, well-established and consistent player scoring system, adaptive scenarios based on level of difficulty, on-line user database, and on-line voting system. VCON can be effectively used to train users how to plan systematically for the negotiation, and also how to apply ZOPA and value exchange concepts. For further research, BATNA concept can be added to the VCON game.

Further study on impacts of cultural differences on negotiating styles is also possible by organizing negotiation workshops with carefully selected groups of international students and then utilizing information gathered from the VCON game and the questionnaires.

This paper was published in the “International Journal of Business & Management Education, Volume 13(2) 2005 ISSN 1832-0236 35”. Full article is available upon request.

The abstract is copied and posted.

Abstract
The ability of construction managers to negotiate effectively influences project performance. Although there is a lot of literature in the area of negotiation skills training, a little attention has been dedicated to the development of an interactive computer-based negotiation game. This paper proposes an innovative tool for negotiation skills training by developing an on-line multiplayer game which allows users in different remote areas to play the game under a highly attractive and entertaining learning environment. The result of our study shows that this on-line negotiation game is an effective and useful tool for training negotiation skills. By repeatedly playing the game, users can develop key negotiation skills particularly in planning the negotiation systematically, identifying Zone of Possible Agreements (ZOPA) and understanding value exchange concepts.

Key words: Game, Negotiation, Training


(*) School of Civil Engineering
(**) School of Management Asian Institute of Technology, Pathumthani, Thailand