| 摘要 |
PROBLEM TO BE SOLVED: To provide a hole cap with a sufficient strength capable of being excellently engaged with a hole and demonstrating an original function as a lid. SOLUTION: The hole cap 10 comprises a tube 14 provided approximately in the center of a plate 12. Corners of end sections of the plate 12 are chamfered. The plate 12 and the tube 14 are integrally made of FRP (Fiber Reinforced Plastics). The surface of the plate 12 is embossed to form an antislip irregularity 11 when necessary. The tube 14 of the hole cap 10 is fitted in a hole 22 formed in a concrete slab 20 to cover and close the opening of the hole 22 covered with the plate 12. COPYRIGHT: (C)2009,JPO&INPIT |
