To provide a simple house such as an agriculture house and livestock barn in which constant internal temperature can be kept and a number of internal illumination facilities can be reduced.SOLUTION: A wall material formed of a resin material formed of a transparent vinyl sheet attached to an arch-shaped columnar member is formed of an inner wall part 3 and an outer wall part 4 which is arranged at a prescribed interval of 3-20 centimeter from the inner wall part 3, there are provided a water inlet 8 and a water exhaust port 9 which discharges water which passed through a circulation path 5, and water is made to flow into the circulation path 5 between the inner wall part 3 and the outer wall part 4.SELECTED DRAWING: Figure 2【課題】内部の温度を一定に保つことができ、内部の照明設備を少なくすることができる農業ハウス、畜舎などの簡易ハウスを提供する。【解決手段】アーチ状の柱部材に取り付けられる透明なビニールシートなどからなる樹脂材で構成される壁材が、内壁部３と内壁部３から３～２０センチの程度の所定距離を隔てて配置される外壁部４とから構成され、水の注入口８と流通路５内を通った水の排水口９が設けられ、内壁部３と外壁部４との間の流通路５内に水が流れるようになった簡易ハウス。【選択図】図２
