Discuss Gas pipe volume - commercial in the Plumbing Jobs | The Job-board area at PlumbersForums.net
use Pi R squared times the length.
Material & Nominal Size of Pipe | Volume of 1m Length of Pipe (m[SUP]3[/SUP]) | Material and Nominal Size of Pipe (mm) | Volume of 1m Length of Pipe (m[SUP]3[/SUP]) | |
(mm) | (in) | |||
Steel / Stainless Steel | MDPE SDR 11 | |||
15 20 25 32 40 50 65 80 100 125 150 200 250 300 350 400 450 | ½ ¾ 1 1¼ 1½ 2 2½ 3 4 5 6 8 10 12 14 16 18 | 0.00024 0.00046 0.00064 0.0011 0.0015 0.0024 0.0038 0.0054 0.009 0.014 0.02 0.035 0.053 0.074 0.089 0.118 0.151 | 20 25 32 55 63 75 90 125 180 250 315 355 400 150 500 560 630 | 0.00019 0.00033 0.00053 0.0016 0.0021 0.0029 0.004 0.008 0.017 0.032 0.051 0.056 0.083 0.105 0.129 0.162 0.205 |
Copper | MDPE SDR 17 | |||
15 22 28 35 42 54 67 | 0.00014 0.00032 0.00054 0.00084 0.0012 0.0021 0.0033 | 90 125 180 250 315 355 400 | 0.005 0.01 0.02 0.038 0.061 0.077 0.098 |
Type of Gauge | Typical Range (mbar) | Typical Readable Movement (GRM) (mbar) | Typical Maximum TTD (Mins) |
Water (SG 1.0) | 0 – 120 | 0.5 | 30 |
High SG (SG 1.99) | 0 – 200 | 1 | 45 |
Electronic (1 decimal place) | 0 – 200 | 0.5 | 30 |
Electronic (2 decimal places) | 0 – 200 | 0.1 | 15 |
Electronic (1 decimal place) | 0 – 2,000 | 0.5 | 30 |
Electronic (No decimal place) | 0 – 20,000 | 5 | 60 |
Mercury (SG 13.5) | 0 – 1,000 | 7 | 60 |
Gas Type | Factor F1 |
Natural Gas | 42 |
Butane | 128 |
Propane | 102 |
Fuel Gas at OP (all gases) | 0.059 |
Gas Type | MPLR (m[SUP]3[/SUP] h[SUP]-1[/SUP] (st)) | ||
LOCATION OF PIPEWORK | |||
Inadequately ventilated areas (Area Type A) | Adequately ventilated internal area volume <60m[SUP]3[/SUP] | Adequately ventilated internal area. Volume >60m[SUP]3[/SUP]. External, exposed or buried. (Area Type C and D) | |
Rate per m[SUP]3[/SUP] of smallest space volume (Area Type B) | |||
Natural Gas | 0.0014 | 0.0005 | 0.03 |
Butane | 0.00044 | 0.00016 | 0.0098 |
Propane | 0.00057 | 0.0002 | 0.0123 |
ALL NEW, AND EXISTING IN AREA TYPE A | EXISTING IN AREA TYPE B | EXISTING IN AREA TYPES C & D | |||
TTD (mins) | GRM x IVt x F1 | 2.8 x GRM x IVt x F1 | 0.047 x GRM x IVt x F1 | ||
Room Volume |
Designation of Meter | Installation Volume, IVm (m[SUP]3[/SUP]) |
G4/U6 | 0.008 |
U16 | 0.025 |
U25 | 0.037 |
U40 | 0.067 |
U65 | 0.100 |
U100 | 0.182 |
U160 | 0.304 |
RD or Turbine | 0.79 x d[SUP]2[/SUP] x L |
Domestic Ultrasonic | 0.0024 |
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