Gas Piping

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PIPING SYSTEMS

TABLE C13.1 Typical Plumbing Fixture Schedule Drainage Water

Fixture type

DFU

Automatic clothes washer Bathroom group (WC, LAV, SH/BT) FV Bathroom group (WC, LAV, SH/BT) tank Bathtub (BT), with or without SH Bidet Clinic sink Dishwasher, domestic Dental lavatory, cuspidor, and unit Drinking fountain Floor drain Kitchen sink and tray, with food grinder Kitchen sink and tray, single 1¹⁄₂-in trap Kitchen sink and tray, multiple 1¹⁄₂-in traps Lavatory, private Lavatory (LAV), public Laundry tray, one or two compartments Shower (SH) per head or stall Sink service (SS), trap standard Sink service, P trap Sink pot and scullery Sink bar Sink flushing rim Sink, surgeon’s Sink wash fountain, per faucet Urinal pedestal, blowout Urinal washout Water closet (WC), private flush valve (FV) Water closet private tank type Water closet private pressure tank Water closet public flush valve Water closet public tank type Water closet public pressure tank Fixture not listed Fixture not listed Fixture not listed Fixture not listed Fixture not listed Hose bibb or sill cock, public Hose bibb or sill cock, private Water supply not listed Water supply not listed Water supply not listed Water supply not listed

3 8

Size trap NPT

Size vent NPT

2

1¹⁄₂

6

Size cold

Size hot

Flow, gpm

¹⁄₂

¹⁄₂

5

2 1 2 1 1 ¹⁄₂

¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂

¹⁄₂

5 2 3 3 1 ¹⁄₂

2 2 2 1 2 2 2 3 2 2 1 5 2 2 10 5 10

¹⁄₂ ¹⁄₂ ¹⁄₂ ³⁄₈ ³⁄₈ ¹⁄₂ ¹⁄₂ ³⁄₄ ¹⁄₂ ¹⁄₂ ¹⁄₂ 1 ¹⁄₂ ¹⁄₂ 1 ³⁄₄ 1

5 4 10 5 4

¹⁄₂ ¹⁄₂ 1 ¹⁄₂ ¹⁄₂

3–5 3–5 15–40 3–5 3–5

5 3 1 2 3 10

³⁄₄ ¹⁄₂ ³⁄₈ ¹⁄₂ ³⁄₄ 1

5 3

WFU 2 8 6

2 1 6 2 1 ¹⁄₂ 5 4 2 3 1 2 2 2 3 2 2 1¹⁄₂ 6 3 2 6 4 6

1¹⁄₂ 1¹⁄₄ 3 1¹⁄₂ 1¹⁄₂ 1¹⁄₄ 3 2 1¹⁄₂ 1¹⁄₂ 1¹⁄₄ 1¹⁄₄ 1¹⁄₂ 2 3 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 3 2 1¹⁄₂ 3 2 3

1¹⁄₂ 1¹⁄₄ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₄ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₄ 1¹⁄₄ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 2 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂

4 4 6 4 4 1 2 3 5 6

3 3 3 3 3 1¹⁄₄ 1¹⁄₂ 2 3 4

1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 1¹⁄₄ 1¹⁄₂ 1¹⁄₂ 1¹⁄₂ 2

¹⁄₂ ¹⁄₂ ¹⁄₂

¹⁄₂ ¹⁄₂ ¹⁄₂ ³⁄₈ ³⁄₈ ¹⁄₂ ¹⁄₂ ³⁄₄ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂ ¹⁄₂

3 3 3 2 2 5 3 4 4 4.5 2 15–30 2.5 2.5 15–40 10–20 15–40

PLUMBING PIPING SYSTEMS

FIGURE C13.1 Resistance of valves and fittings to flow of fluids. (Courtesy Crane Co.)

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