Evaluating Importance Level of Buildability Factors in Cambodian Construction Projects

Buildability refers to the integration of construction knowledge during the design stage to enhance the ease of construction while meeting all requirements of the owner/client. Insufficient buildability in design could result in design rework, low site productivity, increased cost, and changes in the contract. Many previous studies have explored the buildability factors. However, these buildability factors might vary across the countries due to the differences in site conditions, current construction technologies, and availability of materials, equipment and experiences. This research aims to evaluate the importance level of buildability factors of building construction projects in Cambodia. The questionnaires with five-point Likert scale were distributed to project managers and engineers of building contractors in Cambodia. The analysis of one-sample t test showed that there are twelve significant buildability factors. The top five important factors to evaluate buildability were: (1) standardization; (2) completion of design documents; (3) clear specifications; (4) labour skills and (5) design to suit with site conditions. The ranking of the factors and factor categories provides useful information for designers to improve buildability of their designs. The important factors of this research were used for the development of buildability assessment model for building construction projects in Cambodia.