Combination Waste and Vent Systems are permitted when structural conditions prevents the use or conventional waste system.

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.

In general, "Graywater Ready Systems" shall be provided for all building plans submitted after June 6, 2016.

The acceptable pipe material for subsoil drain are listed in table 1102.5 of LAPC. Acceptable pipe material are Asbestos Cement, PE, PVC, and Clay.

Plumbing plan check is required only for swimming pools installed in apartment buildings or commercial building and it is not required for single family dwelling units.

Yes, plan check is required for sewage ejector per Section 101.5.6 of the Los Angeles Plumbing Code (LAPC).

Systems up to 10 interconnected roof drains do not require plan check.

The Plumbing Code allows outdoor installations of water heaters. Check with the Zoning engineer for required minimum distance from the property line.

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.