ANORDNING VED FAGVERK FOR BRUK UNDER BYGGING AV BYGNINGER OG ANDRE KONSTRUKSJONER

摘要

ABSTRACT OF THE DISCLOSUREIn "flying forms" having a plurality of trusses-- usually two -- with a plurality of beams placed acrossthe trusses and a deck placed on the beams, an extension legfor the truss is provided so that the working height of thetruss may be nearly twice its flying height. The extensionleg replaces a truss upright, and mounts using the same boltingarrangement therefor. The leg comprises inner and outer legs,where the outer leg is secured to the top and bottom chordsof the truss, and the inner leg is telescopically engaged withinthe outer leg. The shape of the inner leg is such as toaccommodate the bolts which secure the outer leg to the trusschords. Holes are formed in the inner and oouter legs with pre-determined spacings, and pairs of pins are used to lock the innerleg in any desired position with respect to the outer leg atsubstantially the desired height. A screw jack assembly ishingedly secured at the bottom of the inner leg, and may belocked in a downward position for pouring or locked in a swung-upposition for flying.