Gas Pipes - Low Pressure Sizing

Sizing gas pipes for apartment service lines. Based on schedule 40 steel pipe for low pressure services lines with pressure head 6 inH2O and gas with 0.6 specific gravity and pressure drop 0.3 inH2O.

Length of Service Pipe (feet)20 Apartments40 Apartments50 Apartments60 Apartments70 Apartments80 Apartments90 Apartments100 Apartments110 Apartments
4222222222
8222222222
10222222222
12222222222.5
14222222.52.52.52.5
162222.52.52.52.52.52.5
202.52.52.52.52.52.52.52.52.5
242.52.52.52.52.52.52.52.53
302.52.52.52.53333
402.52.53333334
48333334444
Length of Service Pipe (feet)120 Apartments130 Apartments140 Apartments150 Apartments160 Apartments170 Apartments180 Apartments190 Apartments200 Apartments
4222222222
8222222222
102222.52.52.52.52.52.5
122.52.52.52.52.52.52.52.52.5
142.52.52.52.52.52.52.52.52.5
162.52.52.52.52.52.52.52.52.5
202.52.52.5333333
24333333333
30333333333
40444444444
48444444444

Conversion: 1 ft (foot) = 0.3048 m

Table Basis: Schedule 40 steel pipe for low pressure services lines with:

  • Pressure head: 6 inH2O
  • Gas specific gravity: 0.6
  • Pressure drop: 0.3 inH2O
Gas Pipes - Low Pressure Sizing | MEPKit Engineering Tools | MEPKit