Design-build (DB) and design-bid-build (DBB) are two principal project delivery systems used in many countries. This paper reports on models constructed to predict performance of DB and DBB projects on 11 areas, using project-specific data collected from 87 building projects. The study included collecting, checking, and validating industry data, and the statistical development of multivariate linear regression models for predicting project performance. Robust models are developed to predict construction and delivery speeds of DB and DBB projects. Gross floor area of the project is the most significant factor affecting speed. Besides this, for DBB projects, contractors’ design ability, and adequacy of plant and equipment would ensure speedy completion of the projects. For DB projects, if the contract period is allowed to vary during tender evaluation, this would slow down the project. Robust models to predict turnover and system quality of DB projects are also constructed. A DB contractor’s track record is...

This paper examines the individual firm's motivation to adopt innovation in a construction project, and the inter-organizational interactions of relevant parties involved in innovation. Based on the theory of organizational motivation and inter-organizational relationships, seven hypotheses are set out. These hypotheses are tested using a structured questionnaire, and data were collected via a postal survey. From the results, it is concluded that an innovative proposal may be successfully implemented in the project if effort is put into carrying the innovation through, and there are high expected goals, favourable,results and high commitment. Firms need to be motivated to adopt the innovation, be optimistic about the results and exert additional effort. Incentives for the supporting parties need to be substantial to persuade them to participate in the innovation. In addition, the innovation should be designed such that it could draw all upstream and downstream parties together, and all their interests are looked after in the project.

The poor performance of Singapore's construction industry,like its counterparts in other countries, has been highlighted in many studies. The most recent study in Singapore, ‘Re-inventing Construction’, criticized the performance of the industry and identified fragmentation and segregation of design and construction activities as the main barriers to improved investment and development. The objective of the paper is to identify the activities and initiatives that will motivate and enable the Singapore construction industry to achieve both greater levels of integration and increase the volume of R&D and innovation activities. An industry survey, workshop and interviews identified six factors. The main theme underlying them is the need for the creation of improved business and market conditions that demand further integration and greater innovation effort to meet customer demands and expectations. De nombreuses études ont mis en lumière les performances médiocres de l'industrie de la construction à Singapour et dans d'autres pays. L'étude la plus récente sur Singapour, intitulée “Re-inventing Construction”, critiquait les performances de cette industrie et estimait que les principaux obstacles à l'amélioration des investissements et du développement étaient la fragmentation et la ségrégation des activités de conception et de construction. L'objectif de cet article est de recenser les activités et les initiatives qui motiveront l'industrie du bâtiment de Singapour et lui permettront de parvenir à une meilleure intégration et à une augmentation des activités de recherche et développement et d'innovation. Une analyse de cette industrie, un atelier et des interviews ont permis de dégager six facteurs. Le thème principal sous-jacent est la nécessité de créer de meilleures conditions pour les entreprises et le commerce, ce qui implique une meilleure intégration et un plus gros effort d'innovation pour répondre aux demandes et aux attentes de la clientèle.