PUREKYASUTOKONKURIITOKAIDANOYOBISONOKOCHIKUHOHO

摘要

PURPOSE:To enable conveyance and assembly of a precast concrete staircase even in a narrow and untended road or a narrow construction site. CONSTITUTION:Treadboards 3 and 4 are built up on both sides of a middle wall material 2 projecting main reinforcing bars 2a from the upper surface thereof, and a precast concrete staircase 1 is borne on a beam member 5 projecting the treadboards 3 and 4 to both sides of the middle wall material 2. Wide flange shapes are fitted in fitting grooves 6 on both sides of the middle wall material 2, and the earn member 5 is fixed by sealant 6a filled in the upper and lower parts thereof and grout 6b pumped into the fitting grooves 6.