Excavation is strictly prohibited below the established reference line unless explicitly authorized by the project soils engineer. A three-inch vertical offset governs the limiting subgrade plane relative to the adjacent structural element. The geotechnical restriction protects bearing strata and foundation integrity.
NO EXCAV. BELOW THIS LINE, UNLESS ALLOWED BY PROJECT SOILS ENGINEER 3" 1 1
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