Ductile Iron Pipe Design
Wall thickness selection per Table 842.1.1-1 (ANSI A21.52) for 250 psig working pressure, and minimum wall thickness for internal pressure using design hoop stress s = 16,800 psi (116 MPa) per para. 842.1.1(b).
Inputs
Unit system
Laying condition
Internal-pressure wall thickness
t = P·D/(2·s), s = 16,800 psi (116 MPa)
psig
in