Nibco Plastics Catalog - Paramount Supply
Nibco Plastics Catalog - Paramount Supply
Nibco Plastics Catalog - Paramount Supply
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90<br />
AHEAD OF THE FLOW ®<br />
Pipe Support Spacing<br />
ABS & PVC piping should be supported just as any other piping<br />
system. Ordinary hanger straps may be used for suspending<br />
below floor systems. The light weight of ABS & PVC may lead<br />
one to believe that wider hanger spacing could be permitted.<br />
Four or five foot spacing is recommended, with proper support<br />
at the base of each stack. CPVC Pressure pipe should be supported<br />
every three feet.<br />
Since ABS, CPVC, & PVC are non-metallic, they are not as<br />
“stiff” as their metal counterparts, therefore the installer must<br />
exercise care to assure proper alignment of required grades.<br />
Branch fittings serving trap arms should also be secured to the<br />
framing to prevent movement. Hanger straps should not be so<br />
tight as to compress, distort, cut, or abrade the piping.<br />
ALLOWING FOR EXPANSION-In Pressure piping, allowance<br />
for expansion due to changing temperature is important. It is<br />
good practice to include a 12-inch offset every ten feet in a<br />
straight run. Illustrated below are several methods for providing<br />
off sets.<br />
Specific Gravity Correction Factor<br />
1.1 0.98<br />
1.2 0.96<br />
1.4 0.93<br />
1.6 0.90<br />
2.0 0.85<br />
2.5 0.80<br />
The above data is for un-insulated lines. For insulated lines<br />
reduce spans to 70% of table values. For spans of less than 2<br />
feet continuous support should be used.<br />
Pipe Support Spacing, ABS-DWV, Ft.<br />
Nominal<br />
Size 70°F 100°F 140°F<br />
11/4 41/2 41/2 4<br />
11/2 5 5 41/2 2 5 5 41/2 3 6 6 51/2 4 61/4 61/4 53/4 6 63/4 63/4 6<br />
8 7 7 61/2 10 7 7 61/2 12 7 7 61/2 NIBCO INC. WORLD HEADQUARTERS 1516 MIDDLEBURY ST. ELKHART, IN 46516-4740 USA PH: 1.800.234.0227<br />
TECH SERVICES PH: 1.888.446.4226 FAX: 1.888.336.4226 INTERNATIONAL OFFICE PH: +1.574.295.3327 FAX: +1.574.295.3455<br />
www.nibco.com<br />
www.nibco.com<br />
Revised 9/10/2009<br />
Pipe Support Spacing, CPVC-CTS, Ft.<br />
Nominal<br />
Size 70°F 100°F 140°F 180°F<br />
1/2 3 3 21/2 21/2 3/4 3 3 21/2 21/2 1 3 3 21/2 21/2 11/4 4 4 31/2 31/2 11/2 4 4 31/2 31/2 2 4 4 31/2 31/2 Pipe Support Spacing, PVC-Schedule 40, Ft.<br />
Nominal<br />
Size 70°F 100°F 140°F<br />
1/2 4 1/2 4 2 1/2<br />
3/4 5 4 2 1/2<br />
1 5 1/2 4 1/2 2 1/2<br />
1 1/4 6 5 3<br />
1 1/2 6 5 3<br />
2 6 5 3<br />
2 1/2 7 6 3 1/2<br />
3 7 6 3 1/2<br />
4 7 1/2 6 1/2 4<br />
5 7 1/2 6 1/2 4<br />
6 8 1/2 7 1/2 4 1/2<br />
8 9 8 4 1/2<br />
10 10 8 1/2 5<br />
12 10 8 1/2 5<br />
Pipe Support Spacing, PVC-Schedule 80, Ft.<br />
Nominal<br />
Size 70°F 100°F 140°F<br />
1/2 5 4 1/2 2 1/2<br />
3/4 5 1/2 4 2 1/2<br />
1 6 5 3<br />
1 1/4 6 1/2 5 1/2 3 1/2<br />
1 1/2 6 1/2 5 1/2 3 1/2<br />
2 7 6 3 1/2<br />
2 1/2 8 7 4<br />
3 8 7 4<br />
4 9 7 1/2 4 1/2<br />
6 10 9 5<br />
8 11 9 1/2 5 1/2
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