COMPARISON OF COST AND TIME OF FLOOR SLAB WORKS ON CONVENTIONAL AND BUBBLE DECK SLAB METHODS

Floor slab is one of the most important structure members in a building and largest consuming concrete. Conventional floor has been used for years disadvantages that can be improved with alternate methods. There lot alternative methods have construction world such as precast slab, half precast, hollow core many more. One bubble deck slab. The spherical reinforced concrete patented named Bubble Deck Slab method removes from center part which doesn't do any functional, so it reduce dead load significantly. High-density polyethylene sphere to replace ineffective reduces increases efficiency. With HDPE ball substitution, there will differences cost time compared conventional method. This research taking case Central Control Building Power Plant Muara Tawar Project quantitative approach. analysis calculating budget plan scheduling Microsoft Project. After analysis, between advantages cheaper IDR. 142,128,506.44 or 14,442% 1 day 3,846% faster conventional. Even so, still first choice because very common Indonesia ease execution.