bluuebunny/crossref_metadata_2025 huggingface dataset:
Neural network models for intelligent support of mark‐up estimation
Authors: LI HENG
Published: January 2010

Cost estimation is an important decision‐making process where many factors are interrelated in a complex manner, thus making it difficult to analyse and model using conventional mathematical methods. Artificial neural networks (ANNs) offer an alternative approach to modelling cost estimation. ANNs are simple mathematical models that self‐organize information from training data. This paper explores the use of ANNs in cost estimation. Research issues investigated are twofold. First, this paper compares the performance of ANNs to a regression‐based method which leads to a better understanding of the applicability of ANNs. Second, this paper identifies the effect of different configurations of neural networks on estimating accuracy. Experimental results demonstrate the many advantages and disadvantages of using neural networks in modelling cost estimation.
Pre‐construction project partnering: developing the process
Authors: MATTHEWS JASON , TYLER ALAN , THORPE ANTONY
Published: January 2010

The use of subcontracting within the modern construction industry has become commonplace with many main contractors only undertaking the management and co‐ordination activities. The reliance on subcontractors has put much stress on the subcontractor — main contractor relationship. As main contractors have realized that the greatest potential for cost saving lies with subcontractors, the prevalence of unfair contract conditions, dutch auctioning and other onerous practices has increased. This paper describes a procurement approach, utilizing limited competition, developed by a top UK main contractors (MC) in order to improve its relationships with subcontractors. The approach, termed semi‐project partnering, was implemented on a commercial development. The approach was supported by research which identified: what MC's employees want from subcontractors; what subcontractors want from main contractors; and a study to benchmark MC's performance with that of other main contractors. It was concluded that this approach offers a number of benefits for the client, main contractor, partnering subcontractors and professional consultants. These included an improved team approach; an improved understanding of the project; more compliant subcontractor bids; better/closer relationships; more reliable programming; less confrontation; and lower tendering costs. It was also identified through debriefing subcontractors that sub‐contractors were quoting a10% lower than normal due to this approach.
Model for assessing building contractors' project performance
Authors: MING TAM CHING , HARRIS FRANK
Published: January 2010

This study describes the development of operational research models for predicting contractor performance in Hong Kong, using discriminant and multiple regression analysis techniques. An important aim was to determine the underlying factors that influence contractor performance as seen from the client's point of view, and also to develop accurate models to assist clients in vetting contractors for building projects. The resultant models produced six significant variables measuring three dimensions: the inherent characteristics of the project, the contractor's internal attributes and the external influence of the project team. Specifically these were the complexity of the project, working experience of the project leaders, percentage of professionally qualified staff of the contracting firm, past performance of the contractor, origin of the contractor and the level of the architect's or client's supervision and control of the quality of work and work progress.
Review of environmental assessment in UK building construction: current awareness, concerns and issues
Authors: GRIFFITH ALAN
Published: January 2010

Environmental Assessment (EA) or Environmental Impact Assessment (EIA) is the recognized procedure for ensuring that the potential environmental effects of new building or engineering development are considered before planning approval is consented. There is no doubt that all construction projects have a profound effect upon their environs and therefore accurate and reliable environmental assessment is essential. As the concept of environmental assessment perpetuates and experience grows through application, greater attention is being directed towards the evaluation of its effectiveness. This paper focuses specifically on this issue. Drawing upon a series of interviews with respondents from regional planning authorities and local planning department offices, investigation identifies current thoughts, highlights some of the principal concerns and issues that have arisen in early application, and views the likely future orientation of environmental assessment in the UK. The principal intention of this paper is to review current opinion on environment assessment procedures and practice at this time. Many aspects concerning the concept, principles and practices of EA, some of which start to emerge in this paper, remain for future research and investigation.
Planned construction times and labour utilization — a comparison of UK and French contractors
Authors: PROVERBS DAVID G. , OLOMOLAIYE PAUL O. , HARRIS FRANK C.
Published: January 2010

The results of a model based survey of contractors' planning engineers in France and the UK suggest that planned completion times for constructing an identical high‐rise in situ concrete framed structure are significantly and dramatically lower in France than in the UK. Average planned construction periods in France were 13 weeks, some 9 weeks faster than the UK average of 22 weeks. Since planned construction periods reflect past experience, French contractors apparently achieve superior levels of production performance whilst at the same time working fewer hours per week, utilizing directly employed workers and employing fewer supervisors. If such planned completion times are truly representative, the findings indicate comparatively poor UK contractor performance, and signify future problems for the British builder in the emerging European marketplace. The causes of such poor performance are complicated, but based on indicative French best practices: production is enhanced when scheduled overtime is avoided, a directly employed and mainly skilled workforce is engaged, and a maximum working time of 40 hours per week is the norm rather than the exception.
International contractors and structural changes in host country construction industries: case of Singapore
Authors: OFORI GEORGE
Published: January 2010

The construction programmes of developing countries have constituted a significant part of the international construction market. However, while international contractors seek to exploit these opportunities, the host nations also wish to develop their construction industries over time. This paper shows how conflicting objectives of international contractors and host countries can be correlated for mutual benefit. It outlines strategies adopted by international construction enterprises and contrasts the approaches they adopt in industrialised countries with those in developing ones. It then compares the objectives of international construction enterprises to those of host countries. It uses Singapore's experience to illustrate likely future developments in the construction industries of emerging countries. Finally, it offers suitable approaches that international and local construction enterprises, and governments, should adopt at various stages of development of host countries' construction industries.
The pursuit of quality in Hong Kong construction
Authors: KUMARASWAMY MOHAN M.
Published: January 2010

Construction organizations have responded in different ways to the increasing demands for quality. An interim assessment of the benefits and costs of different approaches is useful in determining future directions for organizations that have already, or are about to, set up construction quality management systems. Evidence from a series of surveys in Hong Kong indicates that long term strategies are needed, for example targeting ‘total quality management’ or comprehensive quality management systems, with ISO 9000 certification being only one step along this route. Specific issues to be addressed are identified, such as the development of construction‐specific guidelines and the integration of safety and dispute avoidance systems in a comprehensive quality management system. A framework is also proposed to assist in selecting the optimal quality management route for a given construction organization. Lessons learned from Hong Kong and elsewhere can be incorporated in this framework, and will help separate rhetoric from reality in rationalizing the quality management strategies of construction organizations.
Distinctive winning elements in BOT tender
Authors: TIONG ROBERT L.K. , ALUM JAHIDUL
Published: January 2010

The Build‐Operate‐Transfer (BOT) model of development of privatized infrastructure projects is implemented through the award of a concession to a private sector consortium which will finance, build and operate the facility. In a competitive BOT tender, the selection of the successful consortium does not depend on the lowest tolls offered by the tenderer. Rather, it is dependent on the ability of the promoter to provide the most competitive package of distinctive winning elements in its proposal during the final negotiations. The promoter must fully understand the government's needs and concerns and be able to address them through the right package of the winning elements. In this paper, these elements are developed from sub‐factors of the critical success factors of technical solution advantage, financial package differentiation and differentiation in guarantees.
Latham as half‐way house: a relational competence approach to better practice in construction procurement
Authors: COX ANDREW , TOWNSEND MIKE
Published: January 2010

This paper is based on research being undertaken by the Centre for Strategic Procurement Management (funded by BAA) considering best practice in construction procurement. The primary aim of the study is to establish how supply chains in construction may be managed more efficiently and effectively. This involves the amalgamation of conventional views on industry problems and initiatives for improvement, the theoretical and empirical consideration of supply chain optimisation, the identification of ‘best practices’ in the procurement process, and the development of suitable change management strategies to allow organizations to move towards better practice. This paper discusses the limitations behind the current thinking for reforming the UK construction industry, and how Latham's ‘team’ approach will not succeed where clients adopt a ‘traditional’ approach to procuring their construction needs. There is a need to differentiate between ‘process’ and ‘commodity’ spend in construction. It is argued that the benefits of a collaborative approach can only be realized by those clients managing ‘fit‐for‐purpose’ supply relationships to satisfy their regular process requirements. An approach known as relational competence analysis is suggested as a methodology for helping clients to determine what is ‘fit for their purpose.
The barriers to entry into the PFI market
Authors: EZULIKE EKENE I. , PERRY JOHN G. , HAWWASH KAMEL
Published: January 2010

This paper reports early results of a study of construction contractors and their experiences of the PFI market. Utilizing material from semi‐structured interviews with three categories of construction contractor, small, medium and large, consideration is given to the barriers to entry which contractors face when approaching the PFI market. The paper highlights six barriers of entry: lack of appropriate skills; high participation costs; high project values; high risk; lack of credibility and contacts; and demands on management time. These barriers affect the three categories of construction contractor in different ways. The findings suggest that the larger the contractor, the more able it is to overcome these barriers and to compete in the PFI market. The findings also suggest that certain barriers to entry will decline as the industry matures, whilst others will remain.
Key legal issues in projects procured under the private finance initiative
Authors: PAYNE HELEN
Published: January 2010

Over the last few years several projects have been procured under the Private Finance Initiative, which brought with them some challenging, often novel, legal issues. A new statutory framework has been established creating new legal entities and regulating the powers and obligations of those new entities. The public procurement regime of the European Union has had to be carefully considered by both the public and private sector parties as failure by either to adhere to the strict rules and procedures can result in the imposition of sanctions. Attitudes to the way in which contracts are structured have had to change. The public sector had to step back from the more traditional involvement and control it has exercised in the past, and permit the private sector to come up with innovative solutions to the public sector's output requirements. The issues of force majeure and change of law have had to be looked at very closely and mechanisms for the sharing of the risk negotiated between the public and private sectors. A uniform approach to these legal issues would be welcomed along with some standarization of fundamental terms.
The potential for adopting the NEC's family of contracts on PFI projects
Authors: HAWWASH KAMEL , BARNES MARTIN
Published: January 2010

The use of the private sector in the provision of public services under the Private Finance Initiative (PFI) is still a relatively new concept. The structure of a project under the PFI leads to the involvement of a number of parties and this necessitates the formation of a number of different contracts to regulate the relationships. These range in complexity from the main concession contract for the funding, supply, operation and maintenance of the asset, to subcontracts between the concessionaire and the various subcontractors. As the New Engineering Contract (NEC) has been designed to provide a contracting system which stimuates good management and is sufficiently flexible to be used for all the interfaces in a complex project, it is a strong candidate for adoption at all the interfaces in a PFI project. The paper concludes that there is potential for using the different contract forms in the NEC family for a number of the different relationships under a PFI project and more specifically DBFO projects.
Karachi light rail transit: a private finance proposal
Authors: FARUQI S. , SMITH N.J.
Published: January 2010

Light Rail Transit (LRT) systems have emerged as an attractive form of public transport both in industrialised as well as developing countries. This paper reviews the implementation mechanism of LRT projects proured by private finance, through Build Operate Transfer (BOT) type concession contracts. A case study approach is used to model an actual LRT project. The case study analysis shows that the uncertainty factor could be converted to monetary terms and the process would enhance ability of the decision makers to have a better understanding of the consequences of risks.
The optimum project duration and cost curve for Hong Kong public housing projects
Authors: KHOSROWSHAHI FARZAD
Published: January 2010

Project duration and cost play a significant role in fulfilling the objectives of both the contractor and the client. This paper builds upon the assumption that, for a given project quality, there exists a relationship between the project duration and the project cost. The behaviour of this relationship is very much influenced by the nature of the project. The paper proposes a general set of potential mathematical expressions for the above relationship and facilitates the identification of the project duration which yields lowest project cost. These are then applied to ‘Harmony’ type housing projects in Hong Kong. Moreover, while demonstrating the difference between the contractor's optimum cost‐time curve and that of the client, the paper suggests that the parties can select one of three options to reach a compromise. To this end, the paper introduces a set of mathematical expressions to represent these compromise‐solutions.
Development of constructability concepts, principles and practices
Authors: GRIFFITH A. , SIDWELL A.C.
Published: January 2010

Constructability is a system for achieving optimum integration of construction knowledge in the building process and balancing the various project and environmental constraints to achieve maximisation of project goals and building performance (CII Australia 1993). Constructability concepts and principles, considered during conceptual planning, design, procurement, construction and use, can make the total building process easier to manage, quicker and more cost effective. When constructability becomes an implied and accepted aspect of the total building process it has the potential to deliver real benefits to clients, consultants, contractors and users. Constructability practices have developed from application and a considerable body of research conducted over the last thirty years. This paper reviews the development of constructability concepts and the identification of the key principles of constructability, and identifies the likely future developments in constructability research and practice. Historically, the attention given to constructability has been somewhat narrowly focused on individual project stages, and therefore, the multi‐dimensional aspects of constructability have not been fully considered and the real benefits may have been missed. The findings presented in this paper indicate that the construction industry has begun to address more purposefully the concerns and difficulties of actively managing the interface between the various stages of the building process in addition to considering the facets of the individual stages themselves. In this way, constructability is becoming an important and powerful concept which can be applied beneficially to the total building process.
Risk analysis and management of Private Finance Initiative projects
Authors: AKINTOYE AKINTOLA , TAYLOR CRAIG , FITZGERALD EAMON
Published: January 2010

The Private Finance Initiative (PFI) is a recent development in the UK in which private sector organisations, design, build, finance and operate assets to deliver a service to public sector clients. The initiative is expected to bring the private sector's finance, management skills and expertise into projects which would normally be undertaken by the public sector. Equivalents of this initiative, also found outside the UK, include DBFO (Design Build Finance Operate), BOO (Build Own Operate) and turnkey projects. Two important considerations for a project to receive an approval for the initiative are that it must represent value for money and there must be sufficient transfer of risk to the private sector. This paper, based on a questionnaire survey, provided the perceptions of clients, contractors and financial institutions on risk associated with PFI and how these determine their approach to PFI schemes. The analysis shows that design changes and the level of information on functional, performance and output requirements for PFI schemes are of major concern to the parties involved in this procurement route.
Information technology decision support and business process change in the USA
Authors: HANSEN K.L. , GANN D.M. , GROÁK S.
Published: January 2010

Decision making and the nature of decisions themselves are changing with the introduction of new information technology (IT)‐based systems in the construction industry. The use of IT systems relates to and can induce changes in business processes within firms as well as interorganizational project processes between firms. In the USA, some of the world's largest hardware and software producers are developing new generations of systems. The market for such systems is potentially large, and these vendors work in close proximity to powerful engineering and construction organizations as well as leading research establishments. It is likely that some of these systems will become de facto standards. For this and other reasons of industrial competitiveness, developments in US IT decision support systems are of interest to practitioners and researchers around the world. The present paper presents the findings of a UK Department of Trade and Industry Expert Mission to assess the development and use of IT systems in the US construction industry. The mission team included seven members, each with specialist knowledge of different aspects of IT development and implementation. The team visited 18 leading organizations where detailed interviews and seminars were conducted during a 2‐week period. The present paper highlights questions for researchers and systems developers. The main findings indicate fundamental changes to the timing, sequence and hierarchy of decision making.
Opportunities for computer‐aided design for construction
Authors: LUITEN GIJSBERTUS T. , FISCHER MARTIN A.
Published: January 2010

Many organizational approaches and technological opportunities are available or under development to improve the integration of design and construction. The opportunities offered by information technology are especially promising. Combining organizational approaches with state‐of‐the‐art technologies in a systematic manner will allow firms to derive the full benefits of computer‐aided design for construction. The present paper describes a framework that helps researchers and practitioners approach computer‐aided design for construction systematically. The framework identifies six interactions between design and construction. It is based on frame‐works for design for manufacture and on an analysis of current building practice. Design for manufacture has proven most effective when integrated into a cyclical product development process. The present framework serves as a road map for the building industry to formalize its information flows, to integrate design for construction into its linear facility delivery process and to approach a more cyclical delivery process.
Resistance to change: architectural education in a turbulent environment
Authors: HINDLE ROBERT D , RWELAMILA PANTALEO
Published: January 2010

For many decades the architectural profession has been accused of resisting change whilst defending an archaic system, and in doing so, neglecting client needs; in turn, this situation has created opportunities which others are now exploiting. Despite this resistance, change has occurred and is continuing in the profession. Several new procurement systems have evolved which pose a threat to the traditional structure and organization of the industry because these are not controlled by the architect. All of this must have repercussions on the way in which architectural students are prepared for the future. Much of the current curriculum content at architecture schools is probably essential, but it is the development of this syllabus in isolation and what is not taught in it that is the problem. The present paper is concerned with those aspects of change which have impacted upon the global construction environment, and describes their potential effect on the architectural profession, and the vocational education and training of its recruits.
Simulation in concreting operations: a comparison of models and resource combinations
Authors: ALKOC EDIZ , ERBATUR FUAT
Published: January 2010

Computer simulation in construction planning has been the subject of research for the last few decades. The present paper describes simulation models geared toward improving the productivity of concreting operations. It is primarily concerned with a study of the sensitivity of concreting operations to a set of possible resource combinations. Thirteen models are examined by the two well‐known methods of concreting: (1) crane and bucket; and (2) the pump. Concreting into slabs, beams and columns are considered. The simulation software Micro‐CYCLONE is used for the actual generation of models. Sensitivity parameters considered in resource combinations include the number of truck‐mixers, buckets and labourers in concrete placing crews. The simulation models developed are compared and the results are discussed. The results enable planners to realize how the resource quantities and capacities in one cycle affect the ones in another period for cyclic operations like concreting. It can be concluded that the maximum number of resources, the interaction of work crews caused by work space limitations and the interaction of equipment because of sharing with other activities of the project may bring limitations.
Minimizing waste on construction project sites
Authors: FANIRAN O.O. , CABAN G.
Published: January 2010

Waste minimization strategies and the relative significance of construction waste sources were examined using a survey of 24 construction firms operating in Australia. The results indicated that a sizeable proportion of respondent firms did not have specific policies for minimizing waste. Furthermore, while a majority of firms with specific waste minimization policies made efforts to minimize waste at source, i.e. to avoid generating waste in the first place, this minimization was limited to waste generated by site offices and amenities. Potential scope exists for improving the effectiveness of waste minimization at source by addressing the sources of all waste generated during the construction phase. The survey results indicated that the five most significant sources of construction waste were design changes, leftover material scraps, wastes from packaging and non‐reclaimable consumables, design/detailing errors, and poor weather. Potential opportunities for minimizing the amount of waste generated on construction project sites are identified.
Evaluation of quality systems for specialist contractors
Authors: LANDIN ANNE M. , PERSSON MATS H.
Published: January 2010

Quality systems are being adopted by the Swedish building industry to an increasing degree. The present paper examines two categories of specialist contractors — electrical contractors, and plumbing, heating and ventilation contractors — and the introduction of quality systems in these environments. The companies were assessed in terms of the ISO 9001 standard and the Crosby Quality Management Maturity Grid. The evaluation shows that much has been accomplished in efforts to ensure quality, but that much is yet to be done. Considering the investment in resources which the introduction of a quality system represented for these firms, it is noteworthy that none of them measured the effects of quality control in a concrete way. A specific instrument, based on ISO 9001 and the Crosby Grid, is seen as applicable. The importance of developing the evaluation of quality systems further is emphasized, an approach which can be used both by suppliers and by customers.
Linear scheduling: past research efforts and future directions
Authors: MATTILA KRIS G. , ABRAHAM DULCY M.
Published: January 2010

Since the early 1960s, there have been different techniques to schedule linear projects, but for the most part, these have been overshadowed by the critical path method (CPM). Recently, there has been renewed interest in linear scheduling and in adapting some of the CPM techniques to linear scheduling. This necessitates a review of the research in the area of linear scheduling. The present paper provides an overview of linear scheduling, discusses the different approaches that have been used and expresses new avenues for research in the area of resource levelling of linear schedules.
Promoting the health of construction workers
Authors: UHER THOMAS E , RITCHIE JAN
Published: January 2010

The present paper reports on research which attempted to ascertain the attitudes of the management and site personnel of general contractors and subcontractors on the issue of health promotion in the workplace. The main focus was on fitness and nutrition programmes, and the existence of a relationship between the health of employees and their productivity. The data were collected using questionnaires from a sample of eight large general contractors and 14 subcontractors operating in the Sydney region of the Australian construction industry. The responses in the sample were received from eight occupational health and safety (OHS) managers and 34 site workers employed by general contractors, and 14 site workers employed by subcontractors. The attitudes of the respondents toward health promotion in the workplace were found to be highly positive, and supportive of the development and implementation of health promotion programmes. In the opinion of the respondents, job performance and productivity may be increased through health promotion programmes in the workplace.
An application of case‐based reasoning to the planning of highway bridge construction
Authors: TAH J.H.M. , CARR V. , HOWES R.
Published: January 2010

Previous approaches to decision support for project planning using rule‐based expert systems techniques have failed to make an impact in practice. This is primarily because of the complexity and large‐scale nature of construction information, and problems with expert systems including: knowledge acquisition; rule‐based knowledge representation; information storage (or memory); learning; and robustness. Case‐based reasoning is one area of current research which may hold the key to overcoming a number of these problems. In the present paper, previous related case‐based reasoning work is examined. The key factors which influence the formulation of construction project plans are identified. This knowledge is used to develop a conceptual framework within which previous planning experiences can be captured and reused in new situations as a means of providing system decision support in construction planning and control. A prototype system, CBRidge, developed to test and demonstrate the concepts within the framework is presented. The results are very encouraging and provide a sound basis for the further development of case‐based reasoning for construction planning in practice.
A comparative evaluation of reinforcement fixing productivity rates amongst French, German and UK construction contractors
Authors: PROVERBS D.G. , HOLT G.D. , OLOMOLAIYE P.O.
Published: January 2010

A contrast of site productivity levels for an in situ concrete operation (reinforcement fixing) on a high‐rise project amongst construction contractors from Germany, France and the UK is given. The productivity rates provided by contractors' planning engineers for a model construction project form the basis of this evaluation. Conclusions drawn, based on relatively small samples, are considered approximations of the actual productivity levels in each international location. An analysis of variance based on international origin indicates significant differences between these productivity rates. Generally, amongst the sample surveyed, UK and German contractors exhibit the most efficient levels of labour productivity for the operations observed, whilst French contractors are by far the least productive. For the model building, UK contractors are the most productive, requiring less labour input than those from Germany and France. The UK contractors also demonstrate a high degree of performance variation. Leading on from these analyses, a construction (labour) cost comparison indicates the UK to be the most economic location. A comparison with previous research indicates contrasting findings. It is concluded that the performance ranking of French, German and UK contractors will vary depending upon the construction operations concerned, and therefore, assumptions regarding national contracting industries should not be based on individual operations. Contractors could benefit from developing closer links with their international counterparts since this would facilitate dissemination of European ‘best practice’.
Evaluating the client briefing problem: an exploratory study
Authors: SMITH J.M. , KENLEY R. , WYATT R.
Published: January 2010

Over the past 10 years, client briefing or facility programming of building projects, has received a great deal of attention from researchers and practitioners. Despite these efforts, tangible improvements to client briefing remain elusive. More testing and evaluation still needs to be carried out before we can judge whether or not any progress has been made. The primary aim of this paper is to present the present authors' experience of testing three potential client briefing techniques in a study conducted within the design studio of a university school of architecture and building. The authors also place the client briefing problem into context by first analysing types of problem, the client briefing problem itself, potential problem‐solving techniques and the three techniques selected for this trial. The current paper presents the results of a survey of student architect opinions about the processes and techniques that were trialed. It was found that more empirical research is needed with these and other techniques in the client briefing environment because no single technique is likely to provide the best solution in every situation. However, whichever technique is adopted, it seems advisable to identify the client's strategic objectives clearly so that the design team can begin its work on a firm foundation. Resistance within the design studio culture towards potential application of analytical techniques is also discussed.
Risk management of Shanghai's privately financed Yan'an Donglu tunnels
Authors: ZHANG W.R. , WANG S.Q. , TIONG R.L.K. , TING S.K. , ASHLEY D.
Published: January 2010

The build‐operate‐transfer (BOT) arrangement is becoming one of the prevailing ways for infrastructure development in China to meet the needs of China's future economic growth and development. Despite tremendous opportunities, the undertaking of infrastructure business in China involves many risks and problems which are mainly caused by China's embryonic legal structure and immature economic market. Further strategies in risk allocation and management are especially important for successful investments in China. Choosing the right path for a BOT project investment is crucial since each project involves different legal rights, different obligations and different risk implications. The present paper describes the structuring and risk allocation, as well as the Government guarantees in a China BOT transport project, the Shanghai Yan'an Donglu Second Tunnel (YD2nd Tunnel). It is also the first BOT project implemented in Shanghai. The project features and the guarantees provided by the Government are described in the present paper.
Emerging clients' needs for Large Scale Engineering projects
Authors: HASSAN TAREK M , MCCAFFER RON , THORPE TONY
Published: January 2010

In recent years the Large Scale Engineering (LSE) construction sector in Europe has seen profound change. This is mainly due to increasing competitive pressures from the United States and the Asian‐Pacific countries which has led in turn to increased pressures to improve competitiveness, productivity and client satisfaction. Lack of understanding of client's requirements hinders achieving such goals especially with the increasing trends of executing LSE projects in a ‘virtual enterprise’ environment. Different parties within the construction process need to understand and fulfil client's business and information requirements. Information and Communications Technologies (ICT) vendors and developers also need to understand clients requirements of systems and to align their products to them. This paper reports on findings from a study within the eLSEwise project to identify the emerging clients' business and ICT needs within the LSE construction industry and to identify the changes in clients' relationships with the supply chain and the gaps in ICT provision.
Large Scale Engineering project process and user requirements
Authors: MITROVIC DRAGANA , MALE STEVEN , HUNTER IAN , WATSON ALASTAIR
Published: January 2010

This paper presents results from an analysis of Large Scale Engineering (LSE) project process conducted within the ESPRIT 20876 project ‘eLSEwise’. The paper describes the LSE project processes, interfaces with business processes, the effects of the changing market place, and current process barriers. In searching how these barriers can be reduced or eliminated, the LSE industry information requirements and Information and Communications Technologies (ICT) requirements were explored.
Impact of Large Scale Engineering products and processes on society—the eLSEwise view
Authors: DAMODARAN LEELA , RUBEK HANSEN JØRGEN , HASSAN TAREK M. , OLPHERT C.W.
Published: January 2010

The universal impact of Large Scale Engineering (LSE) projects is in evidence in diverse aspects of the personal and working lives of citizens around the globe. This does not only include the direct impact of the LSE product or facility but also encompasses the effects on society resulting from new ways of working. These new ways of working have been visualized by the eLSEwise (European Large Scale Engineering Wide Integration Support Effort) project as part of its postulated vision of how LSE construction projects may be delivered in the future, fully utilizing the benefits of emergent information and communication technologies to satisfy the business needs. This paper describes different effects on society resulting from LSE construction products and processes based on the eLSEwise vision and provides recommendations for ensuring that the benefits to society can be achieved.
An approach to infrastructure client projects
Authors: MELSON STEN , KRONSTAM TORBEN
Published: January 2010

eLSEwise is a User Reference Project under the EU ESPRIT programme. The objective of eLSEwise is to analyse the Large Scale Engineering (LSE) sector in terms of IT usage and business perspectives. Based on an analysis of the LSE sector today, the trends in the LSE worldwide market, the trends in the IT industry and a future LSE vision are defined. A ‘road map’ guiding the European LSE industry from where it is today to where the vision sets the goal 10–15 years ahead has been developed. This paper is about the approach adopted by the Danish National Railway Agency (DNRA) in dealing with infrastructure projects. DNRA represents one of the target business areas of eLSEwise: transportation. DNRA is the owner and manager of the Danish national railway infrastructure. Like most European railway companies DNRA is facing major changes, moving from monopoly into a profitable, self‐sustained business. At the same time major infrastructure projects are planned and executed, aiming at the creation of a trans‐European high speed network, and at the general revitalization of the European railway sector. After a presentation of DNRA's business and technical context and major current projects, the paper discusses the eLSEwise perspective of life‐cycle oriented infrastructure management and the integrational aspects related to execution of a major infrastructure project and subsequent facility management. Finally, the paper identifies the major gaps between the current situation and the eLSEwise vision of life‐cycle oriented total management of large scale engineering facilities like railway sections.
Public sector client‐private sector project: transferring the state construction administration into private hands
Authors: ZANTKE GOTTFRIED , MANGELS BARBARA
Published: January 2010

Due to the decreasing public budget, the Bremen state construction and building administration is undergoing serious changes. Efforts made, for more than 10 years, to tighten design and construction processes by implementation of information technology have not shown the intended results. It had to be admitted that the construction authorities had not yet structured all data necessary for the whole life cycle of buildings in a way which was suitable for IT use. The IT systems do not fulfil the requirements of continuous data documentation during the life cycle of buildings and construction. Finally, it was realized that the bureaucratic organization of the building authorities will not satisfactorily support efficiency. Those findings were the motives not only for joining the eLSEwise project (Garas & Hunter (1999) Engineering, Construction and Architectural Management) but, even more importantly, for the intended privatization of the construction administration in Bremen and other German States.
Client briefing processes and procurement method selection: a South African study
Authors: BOWEN P.A. , PEARL R.G. , EDWARDS P.J.
Published: January 2010

An effective client briefing process and the selection of an appropriate building procurement system both contribute to the attainment of client objectives with respect to time, cost and quality for construction projects. The present paper documents the results of an empirical study into the nature and effectiveness of the project briefing process, and the selection and effectiveness of procurement methods in the attainment of client objectives. A national questionnaire survey was administered to clients, architects, quantity surveyors, engineers, project managers and general contractors in South Africa. The results show that room for improvement exists in the manner in which project briefing is conducted and the manner in which procurement methods are selected.
Application of artificial neural network to forecast construction duration of buildings at the predesign stage
Authors: BHOKHA SDHABHON , OGUNLANA STEPHEN O.
Published: January 2010

The application of an artificial neural network (ANN) to forecast the construction duration of buildings at the predesign stage is described in this paper. A three‐layered back‐propagation (BP) network consisting of 11 input nodes has been constructed. Ten binary input nodes represent basic information on building features (i.e. building function, structural system, foundation, height, exterior finishing, quality of interior decorating, and accessibility to the site), and one real‐value input represents functional area. The input nodes are fully connected to one output node through hidden nodes. The network was implemented on a Pentium‐150 based microcomputer using a neurocomputer program written in C+ +. The Generalized Delta Rule (GDR) was used as learning algorithm. One hundred and thirty‐six buildings built during the period 1987–95 in the Greater Bangkok area were used for training and testing the network. The determination of the optimum number of hidden nodes, learning rate, and momentum were based on trial‐and‐error. The best network was found to consist of six hidden nodes, with a learning rate of 0.6, and null momentum. It was trained for 44700 epochs within 943 s such that the mean squared error (judgement) of training and test samples were reduced to 1.17 × 10−7 and 3.10 × 10−6, respectively. The network can forecast construction du‐ration at the predesign stage with an average error of 13.6%.
Differing site conditions risks: a FIDIC/engineering and construction contract comparison
Authors: NDEKUGRI ISSAKA , MCDONNELL BARRY
Published: January 2010

A new edition of the FIDIC Red Book is under discussion. It is an issue whether this edition should be based on the current edition or there should be a complete break with tradition in favour of a contract based on a new philosophy such as that of the NEC, which is reported to be used in many countries in circumstances in which the Red Book would otherwise have been used. This article compares the two contracts on the way they deal with site conditions issues. The comparison is on equity and clarity in risk allocation, adequacy of contractual procedures for dealing with unforeseeable conditions encountered, effectiveness of contractual machinery for dispute resolution, and compliance with reported new developments in successful contractual practices in underground construction. Studies highlighting the recurring frequency of claims for unforeseen ground conditions suggest a need for such particular attention to this aspect of construction. Although a desire for some equity in risk sharing is discernible in both contracts, there is room for improvement in the clarity of both contracts. Each contract has commendable features which are not present in the other. However, a better approach involves a combination of these features with full compliance of the reported modern developments in successful contracting practices.
Architectural management—an evolving field
Authors: EMMITT STEPHEN
Published: January 2010

The term architectural management has been in use since the 1960s and forms an essential part of this journal's title. However, the evolution of the architectural management field has not been a smooth affair, coming into, out of, and then back into fashion; and concise definitions continue to be illusive. Architectural management is a powerful tool that can be applied to the benefit of the professional service firm and the total building process, yet it continues to receive scant attention in the professional journals, seen as little more than a specialist interest. This paper charts the development of the architectural management field and takes a critical look at the field in relation to current research and its applicability to those who stand to gain the most from architectural management, the professional service firms. The paper concludes that architectural management is a cultural issue.
Modelling cost‐flow forecasting for water pipeline projects using neural networks
Authors: BOUSSABAINE A.H. , THOMAS R. , ELHAG T.M.S.
Published: January 2010

This paper furthers work that already exists in the use of artificial intelligence techniques to forecast cost flow for construction projects. The paper explains the need for cost‐flow forecasting and investigates the methods currently used to perform such a task. It introduces neural networks as an alternative approach to the existing methods. The relationship between the number of nodes used and the accuracy of the neural network in modelling the cost flow is closely examined. From this research an optimal solution is proposed for the case and a prototype system is developed. The results of the investigation of the number of nodes used and testing of the prototype neural network for sample cases are presented and discussed.
The need for life‐cycle integration of project processes
Authors: JAAFARI ALI , MANIVONG KITSANA
Published: January 2010

The focus of this paper is on life‐cycle objective‐based project management systems in general, and SPMIS in particular. SPMIS (short for Smart Project Management Information System), has been designed: (a) to facilitate the employment of life‐cycle objective‐based project management approaches; and (b) to support concurrent engineering and construction, thus promoting greater integration of the processes under which projects are proposed and implemented. In order to validate the functions designed for SPMIS the authors undertook a detailed case study of a large capital project. The actual project management functions employed by the project team on the case project were researched and charted using the best current PM practices as the guide. While this field research shed light on the actual needs and requirements, the design of the SPMIS functions was approached from first principles in order to incorporate the basic shift from the traditional objectives of cost, time, and quality to life‐cycle objective functions, such as return on investment, facility operability, and life‐cycle integration. This paper describes the fundamental philosophy and framework for the development of life‐cycle objective function‐based project management systems in general, and contrasts these with the existing PM methods.