ระบบระบายน้ำฝน Can Be Fun For Anyone
Gutters: Gutters are shallow channels that gather h2o at the sides from the roofs. While gutters are more frequent on household roofs, they are able to however be used on industrial roofs, as being a complement to interior drainage or by them selves.เมื่อน้ำฝนหล่นกระทบกับหลังคา ก็อา