Precast concrete floor slab and construction method thereof

(10) JP2022030042A

(22) 06.08.2020

(43) 18.02.2022

(57) To provide a precast concrete floor slab and its construction method having improved workability at a construction site.solution: A precast concrete floor slab 10 is provided with a body 1 and engaging parts 2 provided on opposite circumferential surfaces of the body 1. The engaging parts 2 are upper engaging parts 21 each including: an upper surface 11 flush with the upper surface 11 of the body 1; a lower surface 12 flush with the lower surface 12 of the body 1 and having a shorter protruding length from the body 1 than that of the upper surface 11; a first vertical surface extending vertically downward from an end of the upper surface 11; a second vertical surface extending vertically upward from an end of the lower surface 12; and an inclined surface connecting between a lower end of the first vertical surface and an upper end of the second vertical surface. When one of the engaging parts 2 is the upper engaging part 21 on the opposed circumferential surfaces of the body 1, the other engaging part is composed of a lower engaging port 22.Selected Drawing: Figure 1

(71) Tokyu Kensetsu KK (JP)