PROBLEM TO BE SOLVED: To provide a large-sized simple building equipped with a new skeleton.SOLUTION: A simple building is built by using a pipe material having an octagonal cross section, and comprises pillar members 11 erected on both sides and arch members 12 connecting an apex and the pillar members on both sides, in which a lower part of one arch member and an upper part of the other arch member are connected by a cross tie bar 21, a horizontal tie bar 22 is provided between portions of the arch members on both sides, the arch member and the cross tie bar are connected by an oblique tie bar 24, and the horizontal tie bar and the building apex are connected by a vertical tie bar 23.SELECTED DRAWING: Figure 1【課題】新しい骨組みを備えた大型簡易建物を提供する。【解決手段】断面八角形の管材を用いて構築した簡易建物とし、両側に立設された柱部材１１と頂部と両側の柱部材を連結するアーチ部材１２を備えており、一方のアーチ部材の下部と他方のアーチ部材の上部をクロスタイバー２１で連結し、両側のアーチ部材の部位間に水平タイバー２２を設け、アーチ部材とクロスタイバーを斜めタイバー２４で連結し、水平タイバーと建物頂部とを垂直タイバー２３で連結する。【選択図】図１
