Everyone needs a Pipe Span Chart! - PIPING DESIGN APPRENTICE

The maximum suggested spacing between pipe supports, shown for straight runs of pipe. The spans are based on the pipe being full of water, with a maximum deflection of 12.7mm, pertaining to carbon steel pipe.

The information provided here is intended as a guideline for preliminary design, and shall not be used in place of client or company calculated values.

All dimensions shown are in millimetres.

Maximum Suggested Pipe Spans

Imperial N.P.S.	Metric N.P.S.	Wall Thk.	Max. Span (mm)	75% Span	65% Span
1"	33mm	Sch. 80	3500	2625	2275
1-1/2"	48mm	Sch. 80	5000	3750	3250
2"	60mm	Sch. 80	6000	4500	3900
3"	89mm	Sch. 40	6000	4500	3900
4"	114mm	Sch. 40	7500	5625	4875
6"	168mm	Sch. 40	8000	6000	5200
8"	219mm	Sch. 40	8500	6375	5525
10"	273mm	Sch. 40	9000	6750	5850
12"	324mm	Sch. STD	10000	7500	6500
14"	356mm	Sch. STD	10500	7875	6825
16"	406mm	Sch. STD	11500	8625	7475
18"	457mm	Sch. STD	12000	9000	7800
20"	508mm	Sch. STD	13000	9750	8450
24"	610mm	Sch. STD	13500	10125	8775