PROBLEM TO BE SOLVED: To provide an agricultural greenhouse whose strength is improved with a simple structure.SOLUTION: An agricultural greenhouse is constructed with use of pipe materials having a deformed octagonal cross section comprising long sides 1b facing each other and short sides 1a facing each other, and oblique sides 1c connecting the long sides and the short sides, as column materials and girder materials. A ridge beam has short sides disposed in a top/bottom direction, the column materials have short sides disposed as external surfaces, and of the column materials are disposed on set arranged disposed are and the girder materials arranged between the column materials have short sides disposed in the top/bottom direction.SELECTED DRAWING: Figure 1【課題】簡素な構造で強度が向上する農業用温室を提供する。【解決手段】柱材と桁材として、対向する長辺１ｂと対向する短辺１ａと、長辺と短辺を連結する斜辺１ｃを備えた変形八角形断面の管材を用いて構築した農業用温室であって、棟木は短辺を天地とし、柱材は短辺を外面、柱材間に配置される桁材は短辺を天地とすることを特徴とする。【選択図】図１
