| 摘要 |
P 'UPERRSHkU127)'42-CAP doc+/EN2-7 -9 A prop anchor comprising an internally-threaded ferrule having a base to provide stable support for the ferrule when placed on a casting surface for a concrete slab, and a 5 support/void former assembly co-operable with the ferrule and comprising a base part securable to the casting surface to locate the ferrule on the casting surface and to hold the ferrule against rotation, the base part having a tube engageable over the ferrule, the assembly further comprising an extension tube fitted to the tube of the base part to form a void extending between the upper surface of a slab cast onto the casting surface and the 10 ferrule, the void serving to receive a threaded rod or bar engageable with the ferrule and by which the foot plate of a prop resting on the slab can be retained. 22 ' 18 -- 8 -14 |
