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Seven problems the city would have sent back.

We reviewed all 19 plumbing sheets of a four-storey, 31-unit apartment building: the public NIST reference set. Four of these problems come from values we changed on purpose to show how it works. The other three are in the published drawings as they are. Every one was caught before submittal.

19
Sheets read
7
Conflicts between sheets
0
Sheets we couldn't read

  1. Planted for this sample

    P-6 is drawn on the plans but missing from the fixture schedule

    P101, P201, P501, P5034 plans and risers P-6 drawn
    P401Fixture schedule HB-1P-1P-2P-3P-4P-5P-7RH-1WH-1no P-6

    The fix: Add P-6 to the fixture schedule on P401, or correct the tag on the plans.

    Detail of sheet P101 with the tag in question circled in red
    P101, First floor plan - water & gas. Open the full sheet

  2. Planted for this sample

    P-8 is drawn on the plans but missing from the fixture schedule

    P202Plan or riser P-8 drawn
    P401Fixture schedule HB-1P-1P-2P-3P-4P-5P-7RH-1WH-1no P-8

    The fix: Add P-8 to the fixture schedule on P401, or correct the tag on the plans.

    Detail of sheet P202 with the tag in question circled in red
    P202, Second floor - bathroom group (typ.) - waer & gas. Open the full sheet

  3. Planted for this sample

    P-7, the laundry sink, is in the schedule but isn't drawn anywhere

    P401Fixture schedule P-7 listed
    Plans and risersEvery plumbing plan and riser not drawn

    The fix: Show P-7 on the plans and risers where it goes, or take it out of the schedule.

    Detail of sheet P401 with the tag in question circled in red
    P401, fixture schedule. Open the full sheet

  4. In the published drawings

    HB-1, the hose bibb, is in the schedule but isn't drawn anywhere

    P401Fixture schedule HB-1 listed
    Plans and risersEvery plumbing plan and riser not drawn

    The fix: Show HB-1 on the plans and risers where it goes, or take it out of the schedule.

    Detail of sheet P401 with the tag in question circled in red
    P401, fixture schedule. Open the full sheet

  5. Planted for this sample

    Floor 1: the drawings disagree on how many P-5 fixtures there are

    P101First floor plan - water & gas 4 × P-5
    P201First floor - mechanical room - water & gas 3 × P-5
    P501Apartment bldg - water riser diagram 4 × P-5
    P503Apartment bldg - sanitary riser diagram 4 × P-5

    The fix: Make P201 match the other sheets, or correct the others if P201 is right.

    Detail of sheet P201 with the tag in question circled in red
    P201, First floor - mechanical room - water & gas. Open the full sheet

  6. In the published drawings

    Floor 1: the water and sanitary risers show different numbers of fixtures

    The fix: Correct whichever riser is wrong so both show the same fixtures on floor 1.

    FixtureP501Apartment bldg - water riser diagramP503Apartment bldg - sanitary riser diagram
    P-143
    P-243
    P-343
    Fixture counts on floor 1 of each riser diagram. Open P501 · Open P503

  7. In the published drawings

    The dishwasher (DW) is drawn on the plans but missing from the fixture schedule

    P102, P112, P202, P501, P502, P5036 plans and risers DW drawn
    P401Fixture schedule P-1P-2P-3P-4P-5P-7WH-1HB-1RH-1no DW

    The fix: Add the dishwasher to the fixture schedule on P401, or note that it's provided by others.

    Detail of sheet P102 with the tag in question circled in red
    P102, Second floor - water & gas. Open the full sheet

Then a licensed engineer takes over.

They keep, edit or remove each comment and sign the letter, so you fix these before the city ever sees your plans.

Send us your project Download the draft letter (PDF)