Around aperture of throb opening and closing section tip attaching construction method null of molding box and aperture

摘要

PURPOSE: To continuously and efficiently construct an opening/closing part of a slab, by fitting a metal block in advance before placing concrete slab by use of a decorated setting frame supporting the metal block for the opening so as to form a slab opening without removal of a conventional frame or additional placing of concrete. ;CONSTITUTION: A frame 1 of the peripheral edge of an opening is composed of a lower decorated setting frame 2 to be attached at the opening made on a flat type deck (a) and a upper decorated setting frame 3 which is superimposed with the lower decorated setting frame 2 along the upper peripheral edge thereof and provided with a metal block for the opening frame at the top. The upper decorated setting frame 3 of the frame 1 of the peripheral edge of the opening 1 is attached so as to vertically adjust the position against the lower decorated setting frame 2.;COPYRIGHT: (C)1994,JPO&Japio