Abstract:
Abstract—Controlling is a crucial stage in achieving a project
target, covering aspects of cost, quality, and time. In the
construction industry, the cost aspect is often the main focus. The
project of Duta Mall 2 (DM 2) is the development of an existing
building and the cost aspect is a major concern to the owner.
Dynamic internal and external factors of the DM 2 project cause
the project control to be quite difficult, with the materials
becoming the most dominant factor in construction cost. Cost
control starts from reinforced concrete work materials,
consisting of ready mixed concrete, concrete steel, wire, plywood,
timber, and nails. Bad control of material purchasing can lead to
cost escalation, degradation of material quality, and impact on
the execution schedule of works. This research was conducted to
obtain quantitative correlations between material components
based on reinforced concrete works material supply data. From
these data, some linear regression models can be designed to
obtain a more accurate and effective prediction of material
volume needs in the future. Model equations can be applied to
control material demand, measure waste, reference of material
volume in arranging the project cost budget, in addition to the
process in the control procedure of the request for goods
(materials and equipment).
