BUILDING METHOD FOR BUILDING

PURPOSE:To shorten construction period by standingly providing a guide pillar on the center part of the ground where a building is built, slidably providing an erection roof having the size covering the building along the guide pillar, and thrusting up the erection roof accompanied with progress of construction of a building body. CONSTITUTION:A guide pillar is standingly provided on the center part of the ground M where a building is built. Next, an erection roof 2 is slidably fitted along the guide pillar 1, and the ground M is drilled to build the floor slab of the first floor. Next, in the erection roof 2, a steelwork truss 7 is provided radially and extendedly on the slide device 6 of the guide pillar 1. The ground M is successively drilled, and a tower crane 8 is equipped on the upper part of the erection roof 2. An underground building body (b) is built up to the lower-most part and a building on the ground (a) is assembled, hence the building is bud, and after completing all the building the erection roof 2 and the tower crane 8 are disassembled.