ระบบระบายน้ำฝน Can Be Fun For Anyone
Use picket stakes and Mason’s line or chalk line to make a square or rectangular shape around the marked space. Ensure that the formwork is amount and protected. Even though developing the formwork, make allowance for that slope toward the center of your drain.จังหวัดประจวบคีรีขันธ์ (อำเภอท