SEMI-TAKEDOWN TYPE WATER-PROOF UNDERGROUND FLOOR CONSTRUCTION WORK

摘要

PURPOSE:To shorten the period of construction as well as improve water proofness of underground floor by a method in which blocks of a fixed size for walls are carried in a construction site and assembled by welding the welding portions of reinforcing bars, and a water-proof concrete containing a water- proofing agent Ramon is placed. CONSTITUTION:Steel piles 10 or wooden piles are driven into the ground of construction site, the ground inside the piles 10 is excavated to form horizontal floor face, and a leveling concrete 12 is placed for stabilizing the assembling of blocks. After the leveling concrete 12 hardens, concrete blocks 1 as half- finished products made in a factory are carried in and assembled by welding the welding portions of the reinforcing bars 3 in the blocks 1 to form a temporary formwork for placing concrete of a ceiling 6. In-place concrete 8 is placed into the ceiling 6, bottom 7, and connecting portions 4 and finished. The blocks 1 and 8 are water-proofed by concrete containing a water-proofing agent Ramon, and the inside is covered with a extrusion foam material 11, etc.