If you smell gas nowLeave the building without using switches, flames, or phones indoors. From outside, call 911 if there is immediate danger and call your gas utility. Contact a private-side contractor only after the area is declared safe.
The short answer
The appropriate sleeve, seal, material transition, corrosion protection, and termination depend on whether the pipe is above grade, below grade, entering a basement, or serving outdoor equipment.
What matters in this situation
Gas-line planning should happen before walls close or equipment arrives. Route, pipe size, access, permits, utility coordination, and final testing can all change the practical scope.
Details that help define the next step
- Foundation type and wall thickness
- Interior and exterior elevations
- Waterproofing or drainage system
- Pipe material and route
These details help establish scope; they do not replace an emergency response, onsite inspection, utility decision, permit requirement, or manufacturer instruction.
How a careful service process is organized
- Start by documenting foundation type and wall thickness and interior and exterior elevations.
- Confirm waterproofing or drainage system and pipe material and route before the scope is finalized.
- Have photos from both sides and structural or waterproofing plans ready for the onsite team or authority.
- Use the findings to define the appropriate gas line installation scope, required testing, and any next authority or trade.
What to have ready when requesting service
- Photos from both sides
- Structural or waterproofing plans
- Equipment location
- Permit details
What not to do
Do not core through a foundation before checking structure, utilities, and waterproofing. Keep relevant tags, notices, equipment information, and safely obtained photos available for the people handling this specific situation.