COMMERCIAL PLUMBING - ROUGH-IN

• Ensure that the building main sanitary drain, branches, and venting systems are sized adequately, graded and properly supported; protected from damage, and installed in accordance with the approved plans.
• Ensure that trap arms for drains, lavatories and sinks are the proper lengths.
• Ensure that storm/condensate drains are sized adequately; of approved materials and joints; supported and protected from damage, and directed to an approved outfall.
• Ensure that the water distribution system is sized adequately; of approved materials and joints; supported and protected from damage, complete with all the required valves and access, and is installed in accordance with the approved plans.
• Ensure that cleanouts are provided where required on all drain systems.
• Ensure that all the materials used are compatible with each other (pipe, hangers, nail plates, joints, etc.).
• Ensure that the washing machine and water heater drain pans, when required, have a direct drain with a suitable discharge location.
• Ensure that, when required, the pressure reducing valves are in the proper place.
• Ensure that, when required, backflow prevention devices are installed in accordance with the approved plans and that they have been tested and certified by an approved licensed technician.

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