SIMPLE STRUCTURE

To provide a simple structure such as a deck that can drain rainwater that has entered a hollow portion that causes damage to a deck material.SOLUTION: The simple structure includes a deck material 4 and a header cap 1. The deck material 4 has a hollow portion composed of an inner upper surface 443, an inner lower surface 444, an inner left side surface 445, and an inner right side surface 446. The header cap 1 has a cover portion 11 and a drainage ditch 16 and attached to a header of the deck material 4. The drainage ditch 16 is provided so as to extend from a position higher than the inner upper surface 443 of the hollow portion of the deck material to a header cap lower end 19 beyond the inner lower surface 444 of the hollow portion of the deck material.SELECTED DRAWING: Figure 6 【課題】デッキ材を傷めてしまう原因となる中空部に入り込んだ雨水を排水できるデッキ等の簡易構造物を提供する。【解決手段】デッキ材４と、小口キャップ１を備え、デッキ材４は、内側上面４４３と内側下面４４４と内側左側面４４５と内側右側面４４６からなる中空部を有し、小口キャップ１は、蓋部１１と排水溝１６を有し、デッキ材４の小口に取り付けられており、排水溝１６は、デッキ材中空部の内側上面４４３よりも高い位置からデッキ材中空部の内側下面４４４を超えて小口キャップ下端１９まで延びて設けられている簡易構造物。【選択図】図６