| 摘要 |
PURPOSE: A construction method of various school playgrounds(artificial turf) using the ground without damage to an existing school playground is provided to reduce construction time by removing unnecessary works. CONSTITUTION: A construction method of various school playgrounds(artificial turf) using the ground without damage to an existing school playground is as follows. A drainage way portion on the ground is cut without damage to an existing school playground. A culvert with a perforated pipe having a diameter of 150-200mm and a drainage culvert with a perforated pipe having a diameter of 100-150mm are installed in the cut portion when artificial turf is installed on the existing school playground. [Reference numerals] (AA) Cross sectional drawing of artificial turf construction without damage to existing ground; (BB) Construction of artificial turf; (CC) Stone dust; (DD) Crushed stone aggregate; (E1,E2) Existing ground; (FF) Perforated pipe; (GG) Crushed stone aggregate serves as a drainway, which allows water drawn in turf to be drained through the perforated pipe(the perforated pipe is installed only in the center)
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