FACTORS INFLUENCING THE PRODUCTIVITY OF EXCAVATION WORKS FOR CONSTRUCTION PROJECTS IN JORDAN

This paper is focused on studying the factors affecting the productivity of excavation works in Jordan. In order to investigate this target, a questionnaire was designed considering the most important factors that were proposed in the literature, then distributed to 55 of experts and contractors. Accordingly, the collected data was analyzed using SPSS software in order to evaluate those factors and to arrange them based on their importance sequence. In general, several major factors affect the productivity of excavation works in construction projects. In this research, five of those factors were selected and studied, evaluated, and concluded to be the most major factors that could influence the productivity of excavation works for construction projects in Jordan, and could significantly affect the cost and time of carrying out the project. Accordingly, the results of this research showed that the increase in the productivity for excavation works is related to taking into account the factors recommended according to their priority, in which the first of these was the "the types and readiness of the excavation machines", followed by (in descending order) "the geological nature of the site", "the project site investigation", "the technical expertise specialized in carrying out excavation works", and "the financial liquidity and the payment of dues".