| 摘要 |
PURPOSE:To dispense with the reinforcement of a footstep riser at the time of mold construction and use the surface of the footstep riser as a riser face of a stairway as it is. CONSTITUTION:Side wall molds 4 are constructed on both sides of a slab panel 3, support tools 2 are fitted to the side wall molds 4 correspondingly to riser sections of a stairway to be constructed, and a footstep riser 1 is suspended across the support tools 2. The footstep riser 1 is supported by support members, concrete is placed to form a tread, and the footstep riser 1 is used as a riser section which is part of the stairway without being disassembled. Fitting bolts are provided on the back side of the footstep riser 1, and the upper side and the lower side are inclined at the required angle to be retreated to the back side. The support tool 2 includes a substrate, a height adjusting bolt rotatably provided on the substrate, and a support plate screwed with the height adjusting bolt to be lifted or lowered and mounted with the footstep riser 1, and the support plate can be released from the height adjusting bolt. |
