Abstract
CONTRIBUTION TO OPTIMIZATION OF SUPPLIES PROGRAMMING OF CONSTRUCTION SITES LOCATED IN ENCLOSED AREAS: CASE OF CAMEROON
Cedric Cabral Fandjio Yonzou*, Ursula Joyce Merveilles Pettang Nana, Marcelline Blanche Manjia and Chrispin Pettang
ABSTRACT
Numbers of projects are carried out beyond contractual deadlines or abandoned, and the feedback shows that it?s principally due to problems of refuelling materials. Indeed, in construction sites, the management of physical flows is strongly linked to road transport parameters, which is more complex in developing countries because the road network is embryonic and unsafe at certain times of the year. This article deals with this great difficulty by relying on a construction supply programming model that takes into account the fluctuating composite state of the road network due to the heterogeneity of pavement degradation and state of traffic on road?s sections. In order to achieve this goal, we have developed a formula for estimating trucking time whose parameters accommodate the temporal and spatial distributions of the different states of degradation and traffic on the tracks. Then replenishment rules have been proposed through the order date and the minimum quantity of materials required. The application of our model to a construction site located in Bengbis, at 285 KM from Yaounde shows a total travel time of 680 minutes including 500 minutes for crossing of the route and 180 minutes for stopping time. From the forecast on trucking times, we better controlled the uncertainty in supply programming.
[Full Text Article] [Download Certificate]