การวิเคราะห์ศักยภาพการรับน้ำท่าต่อต้นทุนค่าก่อสร้างหลังคาเขียว

Abstract

In order to reduce the amount of runoff, there are several ways to reduce the environmental impact of low impact development (LID). This research has chosen a management approach to reduce the amount of runoff with green roofs because there is no need to use a limited land area for management. Based on the analysis of the area on the roof of the 30 years building, Faculty of Engineering, Chiang Mai University, Chiang Mai Province, which is the public and large buildings. By comparing the original base case and the case that developed as a green roof, a total of 5 cases were compared with the Green Stormwater Infrastructure Plug-in (GSI Plug-in) computer simulation program in Autodesk Infraworks to be alternative approaches for the construction of green roofs to have the potential to reduce the amount of runoff. By choosing different materials, properties and sizes. Therefore, the runoff reduction potential can be summarized as the cost of constructing green roofs. The result was a third alternative approach (GR-3) compared with the original base case by using the cost of structural layer materials: Depth of potting soil B = 4 inches, the porosity of potting soil material (C) = 25 percent. The depth of the drainage layer D = 2 inches and the porosity of the drainage material (E) = 95 percent will be able to reduce the runoff volume by 0.02 inches, a 99 percent reduction in Runoff ratio with BMP area. The area is 100 percent covering the entire area. As for the price, the construction cost is 826,800.00 baht, and the water intake capacity per construction cost is -0.35 inches/baht, which is the best choice for the runoff reduction potential. Keywords: Green Roof, Runoff Absorption, Best Management Practices (BMP), Construction Cost