Material management comparison between lot for lot and field actual condition

¹ Department of Civil Engineering, Politeknik Negeri Padang, Padang, West Sumatra, Indonesia
² Department of Civil Engineering, Faculty of Engineering, Universitas Andalas, Padang, West Sumatra, Indonesia
³ Petroleum and Energy Engineering Department, Sulaimani Polytechnic University, Sulaymaniah, Iraq

^* Corresponding author: masrilayanti@eng.unand.ac.id

Abstract

Project material management aims to regulate effective and efficient use materials because material is a resource the largest percentage of the total project cost. In reality, the process of providing materials encounters many obstacles such as late material arrival cause human error and natural disaster, materials not available, overcost, undercost. This research was carried out substructure of the Inpres Market Development Project located in Painan, Pesisir Selatan. Materials for substructure were imported from Padang, which is 70 km from project located. The topographic conditions of areas that prone to disasters such as floods and landslides, which cause connecting road Padang and Painan to be cut off. Arrival materials delay, which results in project delays and wasted costs, so material management is needed. This study aims to obtain the actual material management costs of the field, further compared to the lot for lot technique. The results, total cost field actual condition of Rp8,909,250,238.42, with a lot for lot technique of Rp8,789,667,046. The cost use lot for lot technique is cheaper by Rp119,583,192.42 or 1.34% due, this technique makes the storage cost zero, meaning that every material that comes will be used directly at the project site.