Shores of slab formwork for building construction

摘要

The present invention is accomplished by providing a dowel of a dowel for building slabs that is easier to unfold and fold. The body has a body with upper and lower supports at its upper and lower ends. The body is divided into two parts, and the length of the body is expanded and contracted. At the upper and lower sides of the circumference, A cap-shaped control member provided with an opening member and an opening / closing part is provided so as to be rotated forward and backward by using an operation hole moving on a guide pin, The upper and lower side projections of the upper member are arranged in parallel at an acute angle and the control member is provided with a plurality of projections for passing through the respective projections for controlling the stepwise length of the body The first opening portion and the upper and lower side projections arranged in parallel are simultaneously passed through to temporarily stretch the length of the moving body And the operation hole is constituted by a first section for adjusting the stepwise length of the body and a second section for temporarily extending and retracting the body, and the length of the body is adjusted stepwise, Thereby improving installation and disassembly workability.