GETTING MY ระบบระบายน้ำฝน TO WORK

Use wood stakes and Mason’s line or chalk line to create a sq. or rectangular condition around the marked place. Be sure the formwork is stage and protected. Whilst setting up the formwork, make allowance for that slope in direction of the center of the drain.การตั้งค่าคุกกี้ ยอมรับทั้งหมด