Asbestos cement water pipes - inside diameter 2

[waterboy1954]

Does anyone have any literature citations or experience on what the INSIDE diameter should be for asbestos cement water pipes with the following NOMINAL diameters: 6 inches (152 mm), 8 inches (203 mm), 10 inches (254 mm), and 12 inches (305 mm)?

 

[JStephen]

The inside diameter IS the nominal diameter, per AWWA C400-93, with a tolerance of +/-5% on the average ID.

 

[semo]

JStephen is correct. +/-5%.

The old Johns Manville catalog has the following for ID's on their pressure class pipe.

Nominal Class 100 Class 150 Class 200
4 4.00 4.00 4.00
6 6.00 5.85 5.70
8 8.00 7.85 7.60
10 10.00 10.00 9.63
12 12.00 12.00 11.56
14 13.59 14.00 13.59
16 15.50 16.00 15.50