Construction construction method null of the joist throb which uses the precast concrete large

摘要

PURPOSE:To make field-work efficient by providing a joist slub locking recessed portion at the upper end of a girder member made of precast concrete, and also providing a joist slub with an engagement portion, and fitting their locking portions with each other when they are set. CONSTITUTION:A joist locking recessed portion 1 is provided at the upper end of a precast concrete girder member A. An engagement portion corresponding to the locking recessed portion of the girder member A is provided on the end face of the joist slub B. When the girder member A and the joist slub B are set they are fitted with each other at their respective locking portions and, after reinforcement is arranged in a predetermined way, concrete is placed on the upper portion so that the girder member A and the joist slub B are integrated with each other. Thus labor required for constructing work is largely reduced.