Usulan Perbaikan Tata Letak Lantai Produksi Departemen Upholstery Perusahaan Mebel Menggunakan Algoritma Craft Dengan Minimasi Ongkos Material

The layout of the upholstery department of furniture manufacture has material flow problem which lowers productivity. The problems are the raw materials and components cover the operator lane road, the cross-movement activities, and the department layout is not renewed. The whole problems cause loss of work equipments and the declining productivity of the operators. Problems can be solved by redesigning the layout to be an optimal layout. An optimal layout minimizes the distance of material transfer, and material handling costs (OMH), as well as eliminating cross movement. Research of redesigning the layout comprising eight work stations with CRAFT method uses software WinQSB. The layout for implementation is obtained from the sixth layout iteration that has been adapted to the conditions of the company according to the information and responsible referral staff. The study states the proposed layout is more efficient with the total distance and total OMH 15.9% smaller than existing layout. Total distance of material transfer drops from 6957.94 meters/day to 5851.45 meters/day. Total OMH declines to Rp. 4,388,586 per year from Rp. 5,218,452 per year. The company will reduce the total OMH Rp. 829.866 per year by implementing the proposed layout