| 摘要 |
Master(1) by connecting number of truss beam and truss beam into truss form by connecting four struts(11) with parallel connecting frame(12), vertical connecting frame(13) and angle connecting frame(14) are built. The bottom of master is raised vertically from a floor by being fixed to a supporting board(2) which is installed at the center of floor and the top part is located closely to inner surface of ceiling part where wanting to build. Since one end of supporting beam is fixed to fixing board that is fixed to master by placing number of supporting beams perpendicularly to master with some gap around master(1), operation is simplified and dismantling operation is easy.
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