Can I get plan check approval before getting the gas service letter from the gas company?
No. Low pressure gas systems (2 psi or less) with more than 10 gas outlets require plan check. Medium and high pressure gas systems (more than 2 psi) require plan check regardless of the number of gas outlets.
Do I need plan check if I am adding plumbing fixtures in an existing building that has a main pipe 2 inches diameter or larger?
Plan check is not required for existing systems that are added added or altered with branch lines serving less than 20 fixture units and sized per table 610.4.
Low pressure gas systems (2 psi or less) with more than 10 gas outlets require plan check. Medium and high pressure gas systems (more than 2 psi) require plan check regardless of the number of gas outlets.
Do I need plan check for a potable water system when the water service is less than 2 inches?
Plan check is not required for a 2-inch or less water service when the potable water piping is sized using table 610.4 of the Los Angeles Plumbing Code.
