1) Orient in the Set

Start with the cover/index, then Plumbing General Notes. Skim A-sheets (rooms/ceilings), S-sheets (penetrations/sleeves), C-sheets (site utilities), E/M (power/coordination). Confirm latest revision/addenda before marking anything.

2) Legends, Abbreviations, Keynotes

Map symbols/tags to schedule rows. Keynotes often hide cost items (primers, firestopping, heat trace, seismic). Add them to your takeoff placeholders early to prevent “mystery adds” later.

3) Floor Plans vs. Risers/Isometrics

Plans show horizontal routing; risers/isometrics reveal vertical stacks, vents, and branches. Reconcile both: every fixture on plan must live on a riser; every riser branch must land on a plan.

4) Schedules & Tags

Match tags (WC-1, LAV-2, WH-1, RP-1) to schedule fields: connection sizes, ADA, trim, carriers, power, venting. Note basis-of-design and approved equals—quotes must align.

5) Coordination Hot-Spots

Slab penetrations & sleeves, core drilling, ceiling space limits, roof drains/scuppers, seismic bracing, shut-off locations, cleanout access, and interstitial routing. Flag early for RFI.

6) Specs That Move the Number

Materials (PVC vs. CI, copper vs. PEX/steel), joints (no-hub, solder, press), testing (psi/hrs), insulation (type/thickness), supports (spacing), seismic, submittals, O&M. Anything beyond your standard = cost/time.

🧮 Fixture Unit Matrix (CSV)

Counts by room/fixture; add DFU/GPM per local code tables.

Area,Fixture Tag,Description,Qty,Cold FU,Hot FU,Total FU,Notes
Restroom A,WC-1,Water Closet (flush valve),4,4,0,4,"Carrier req’d"
Restroom A,LAV-2,Lavatory,4,1,1,2,"Mixing valve"
Breakroom,SINK-1,Kitchen Sink,1,2,2,4,"Disposal?"
Roof,FD,Floor Drain,2,0,0,0,"Primer req’d"
Core,WH-1,Water Heater,1,-,-,-,"Gas/Electric per schedule"

Tip: Multiply fixture counts by DFU/GPM per code; record peak and probable demand if required.

✅ Plan Review Checklist (CSV)

Track status of drawings/specs and cross-discipline checks.

Item,Status,Notes
Cover Sheet & Index,Done,"Rev 3 current"
Plumbing General Notes,Done,"Testing 100 psi/2 hrs"
Legend/Abbreviations,Done,"Symbols aligned to schedules"
A-Sheets (Rooms/Ceilings),In Progress,"Restroom ceilings @ 9'-0""
S-Sheets (Penetrations/Sleeves),Open,"Core at Grid C/5?"
C-Sheets (Utilities),Done,"Tie-in at North easement"
E/M Coordination,In Progress,"WH-1 power req’d"
Addenda/Clarifications,Open,"Add #1 updated fixture list"
RFI Log,Open,"RFI-01 sleeve sizes; RFI-02 vent detail"

🧷 Riser Tracing Worksheet (CSV)

Match fixtures on plan to riser branches to prevent misses.

Riser ID,Level,Branch/Stack,Served Fixtures,Vent Path,Notes
R-1,L1,Sanitary Stack A,"WC-1(4),LAV-2(4)",To Roof @ VTR-1,"Cleanout @ 4'-0" AFF"
R-1,L2,Branch East,"WC-1(2),LAV-2(2)",Tie to VTR-1,"Slope 1/8" per ft"
R-2,Roof,Storm Leader N/A,"Roof Drains (2)",Leader to Site,"Heat trace?"
R-GAS,L1,Gas Main,"WH-1, RTU-3, RTU-4",N/A,"Regulator @ Mech Rm"

📘 Legend & Abbreviations (HTML)

Drop into a page/Code Block or export to PDF.

<h3 style="margin:0;color:#001F3F;">Legend & Abbreviations — Plumbing</h3>
<ul style="line-height:1.7; margin:8px 0 0;">
  <li><strong>WC</strong> = Water Closet; <strong>LAV</strong> = Lavatory; <strong>FD</strong> = Floor Drain; <strong>VTR</strong> = Vent Through Roof</li>
  <li><strong>CI</strong> = Cast Iron; <strong>PVC</strong> = Polyvinyl Chloride; <strong>PEX</strong> = Cross-linked Polyethylene</li>
  <li><strong>DFU</strong> = Drainage Fixture Unit; <strong>GPM</strong> = Gallons per Minute</li>
  <li><strong>CO</strong> = Cleanout; <strong>RP</strong> = Reduced Pressure Backflow Preventer</li>
</ul>