Auxiliary device for preliminary forming of stair steps for duplex house - WEN CHENGUANG; LIN XINWU; LUO JUN; FENG XU (2022)
Keywords: BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING