Exterior Underground Gas Line

Performed when the gas pipe is factory coated for use underground with all joints and or fittings wrapped and installed in the trench. Steel gas pipe (galvanized or black iron) shall be of approved material. Burial depth for steel pipe shall be no less than 18” inches below grade. The test for such piping shall be 10 psi on a 30 psi gauge for no less than 15 minutes, with no perceptible drop in pressure. Approved Polyethylene (PE) pipe may be used in exterior buried piping systems. The test for such piping shall be 10 psi on a 30 psi gauge for no less than 30 minutes with no perceptible drop in pressure. The burial depth for PE pipe shall be no less than 18” inches below grade with approved metallic risers on each end. An electrically continuous number 18 AWG yellow tracer wire shall be installed with and attached to underground non-metallic gas piping and shall terminate above grade at each end. CSST shall be installed and bonded in accordance with the code and the manufacturer’s specifications.  These tests shall be made using air, CO2, or nitrogen pressure only. For installation and testing, gas pipe materials other than those listed above consult the piping manufacturer and the Building Division for approved methods.

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1. Drywall/Shower Wallboard/Tile backer Inspection
2. Electrical
3. Electrical Service Panel
4. Exterior Underground Gas Line
5. Final Inspection
6. Rough Inspections
7. Framing
8. Foundation
9. Insulation Inspection
10. Interior gas lines/release
11. Lath/wrap Inspection
12. Plumbing/Mechanical
13. Roof sheathing and shear
14. Rough or precise grading
15. Shower pan (poured in place)
16. Special Inspections
17. Subfloor Insulation
18. Subsoil plumbing (or underfloor)
19. Temporary power pole
20. Underfloor and frame Inspection