PIPING SUPPORTS B.219

TABLE B5.1 Suggested Piping Support Spacing

Suggested maximum span, ft (m)

NPS (DN) Water service Steam, gas, or air service

1 (25) 7 (2.13) 9 (2.74)2 (50) 10 (3.05) 13 (3.96)3 (80) 12 (3.66) 15 (4.57)4 (100) 14 (4.27) 17 (5.18)6 (150) 17 (5.18) 21 (6.40)8 (200) 19 (5.79) 24 (7.32)

12 (300) 23 (7.01) 30 (9.14)16 (400) 27 (8.23) 35 (10.7)20 (500) 30 (9.14) 39 (11.9)24 (600) 32 (9.75) 42 (12.8)

Pipe Support Spacing

The suggested maximum spans between supports listed in Table B5.1 reflect thepractical considerations involved in determining support spacings on straight runsof standard wall piping. The spans are based on a combined bending and shearstress of 1500 psi (10.35 MPa) when the pipe is filled with water, and ¹⁄₁₀- in (2.54-

TABLE B5.2 Gravity Steel Pipe Support Spacing (Contents � Water)

Pipe span, ft-in (m)

Nominal 1-in 1¹⁄₂-in 2-inpipe size, Pipe (25 mm) (40 mm) (50 mm)

NPS (DN) sch. No insul. insul. insul. insul.

40 6-8 (2.03) 5-4 (1.63) 4-6 (1.37) 3-11 (1.19)¹⁄₂ (15) 80 6-7 (2.01) 5-5 (1.65) 4-7 (1.40) 4-0 (1.22)

160 6-4 (1.93) 5-5 (1.65) 4-9 (1.45) 4-2 (1.27)

40 7-5 (2.26) 6-3 (1.91) 5-6 (1.68) 4-10 (1.47)³⁄₄ (20) 80 7-5 (2.26) 6-4 (1.93) 5-8 (1.73) 5-1 (1.55)

160 7-3 (2.21) 6-4 (1.93) 5-9 (1.75) 5-2 (1.57)

40 8-3 (2.51) 7-0 (2.13) 6-4 (1.93) 5-9 (1.75)1 (25) 80 8-3 (2.51) 7-3 (2.21) 6-8 (2.03) 6-1 (1.85)

160 8-1 (2.46) 7-3 (2.21) 6-9 (2.06) 6-2 (1.88)

40 8-3 (2.51) 7-0 (2.13) 6-4 (1.93) 5-9 (1.75)1¹⁄₄ (32) 80 8-3 (2.51) 7-3 (2.21) 6-8 (2.03) 6-1 (1.85)

160 8-1 (2.46) 7-3 (2.21) 6-9 (2.06) 6-2 (1.88)

40 9-10 (3.00) 8-9 (2.67) 8-1 (2.46) 7-3 (2.21)1¹⁄₂ (40) 80 9-10 (3.00) 9-1 (2.77) 8-6 (2.59) 7-7 (2.31)

160 9-11 (3.02) 9-2 (2.79) 8-8 (2.64) 7-11 (2.41)

40 10-9 (3.28) 9-10 (3.00) 9-3 (2.82) 8-7 (2.62)2 (50) 80 11-1 (3.38) 10-2 (3.10) 9-9 (2.97) 9-2 (2.79)

160 11-1 (3.38) 10-5 (3.18) 10-0 (3.05) 9-6 (2.90)