A minimum four-inch depth of rock cobble ballast is placed over the roof deck assembly, with gravel and rock washed twice prior to placing per the materials plan and keynote legend. Waterproofing is applied directly over the roof deck, with specific system requirements referenced per detail 20/2-A8.31. The structural roof deck provides support for the waterproofing and ballast layers.
1 2 3 1 2 3 ROCK COBBLE - PER MATERIALS PLAN MATERIALS COLOR REFER TO KEYNOTE LEGEND. GRAVEL/ROCK TO BE WASHED TWICE PRIOR TO PLACING. MINIMUM 4" DEPTH. WATERPROOFING PER ROOF DECK PER 20 2-A8.31 20 2-A8.31
Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.
Start membership