Allowable Pipe Span (in)

Written by Matt Milbury. Posted in Pipe Layout Datasheets

Allowable Pipe Span Datasheet

  • Spans are based on using carbon steel pipe (A53-GR.B) filled with water.
  • Spans are based on 12 1/2% mill tolerance and .065" correction tolerance.
  • Spans are based on insulated and uninsulated lines below 650°F.
  • If supports are spaced greater than 25'-0" consultation with a structural engineer should be performed for additional analysis.

data pipe span 1

Pipe Size (NPS)Pipe ScheduleWall ThicknessStraight SpanAngle SpanLoop Span
Allowable SpanDeflection
3/4 80 .154 10'-0" 3/8" 6'-0" 8'-0"
1 80 .179 13'-0" 1/2" 7'-0" 10'-0"
1 1/2 80 .200 17'-0" 3/4" 11'-0" 13'-0"
2 40 .154 19'-0" 1" 12'-0" 14'-0"
2 80 .218 20'-0" 1" 13'-0" 15'-0"
3 40 .216 25'-0" 1" 16'-0" 18'-0"
4 40 .237 27'-0" 1" 18'-0" 20'-0"
6 40 .280 33'-0" 1" 22'-0" 25'-0"
8 30 .277 36'-0" 1" 24'-0" 27'-0"
10 20 .250 38'-0" 1" 25'-0" 29'-0"
10 40 .365 41'-0" 1" 27'-0" 31'-0"
12 20 .250 40'-0" 1" 26'-0" 30'-0"
12 STD .375 44'-0" 1" 29'-0" 33'-0"
14 10 .250 42'-0" 1" 27'-0" 31'-0"
14 STD .375 46'-0" 1" 30'-0" 34'-0"
16 10 .250 44'-0" 1" 28'-0" 33'-0"
16 STD .375 48'-0" 1" 31'-0" 36'-0"
18 10 .250 45'-0" 1" 29'-0" 34'-0"
18 STD .375 50'-0" 1" 33'-0" 38'-0"
20 10 .250 47'-0" 1" 31'-0" 36'-0"
20 20 .375 52'-0" 1" 34'-0" 39'-0"
24 10 .250 49'-0" 1" 32'-0" 37'-0"
24 20 .375 55'-0" 1" 36'-0" 41'-0"