DETAILED NOTES ON ท่อน้ำฝน

7. Consider using reinforcing mesh or steel bars to provide the concrete added energy and toughness towards significant rain or snow masses.PVC: Plumbers have been using polyvinyl chloride (PVC) as a cheaper option to Solid iron for over a century now. It can be nontoxic and abrasion-resistant, and is also easier to cut into uncommon shapes. Even