CORNER CONSTRUCTION OF INNER CONCRETEFORM AND STAIRS CONCRETE FORM IN MULTI-STORY BUILDING

摘要

A corner assembly of inner forms and a stair form for a multi-story building are provided to install forms easily by coupling the corners of inner forms strongly using corner connectors, to assemble the corners of inner forms by placing concrete mortar between an inner form and an outer form and to construct stairs safely and strongly by forming a staircase hole on a wall and installing a staircase to the staircase hole. A corner assembly of inner forms is completed by erecting inner forms(1,1',1'') on the foundation to make the corners approach to each other, inserting corner connectors(3) from the inside, setting screw holes formed on both sides of a joint piece(11) to each screw hole of the inner forms and fastening with fixing screws(13). The stair form is composed of a Ý‹-shaped stair form(5) welded to both sides of the inner forms of the inside and a straight stair form welded to the inner form of the backside to coincide with the top of the Ý‹-shaped stair form, hereon the Ý‹-shaped stair form and the straight stair form are formed to have a staircase hole on a wall by placing and hardening concrete mortar in cubic spaces(8) between the inner form and an outer form(2).