H-Stand Loading Charts - Rooftop Support Systems

H-Stand Loading Charts

Typical Steel Pipe Weights for H-Stand Loading

Surface Area of RTSF21 Base: 211.75 in2

Surface Area of RTSPUC Base: 71.50 in2

Pipe SizeWater Filled Pipe Weight (lbs/ft)Total Weight at 6ft Spacing (lbs)Total Weight at 8ft Spacing (lbs)Single RTSPUC PSI
6ft
Single RTSPUC PSI
8ft
Double RTSF21 PSI
6ft
Double RTSF21 PSI
8ft
1″2.0612.3616.480.3480.4050.1940.216
2″5.1130.6640.880.6040.7470.2380.274
3″10.7864.6886.241.0791.3810.3180.381
4″16.3097.80130.401.5431.9990.3960.485
5″23.20139.20185.602.1222.7710.4940.615
6″31.50189.00252.002.8183.6990.6120.772
8″50.10300.60400.80**0.8751.123
10″74.60447.60596.80**1.2221.586

* Application not permitted
** ASTM A53-86 Schedule 40 pipe
*** PSI Calculation for a single pipe
**** Weights include that of an RTSPUC1 or a 75lb H-Stand

Typical Steel Duct Weights for H-Stand Loading

Surface Area of RTSF21 Base: 211.75 in2

Surface Area of RTSPUC Base: 71.50 in2

Duct SizeDuct Weight/ft
w/ 2″ Insulation
Total Weight
6ft Spacing (lbs)
Total Weight
8ft Spacing (lbs)
RTSPUC Base PSI 6ftRTSPUC Base PSI 8ftRTSF21 Base PSI 6ftRTSF21 Base PSI 68t
28″x28″28.80172.80230.401.5581.9610.5850.721
30″x30″30.90185.40247.201.6462.0780.6150.761
42″x42″43.20259.20345.60**0.7890.993
54″x54″55.60333.60444.80**0.9651.227
60″x60″61.80370.80494.40**1.0531.345
84″x84″86.50519.00692.00**1.4031.811
96″x96″98.80592.80790.40**1.5772.043

* Application not permitted
** Weights for 16 ga. steel rectangular duct
*** PSI Calculation for a single duct
**** Weights include that of an H-Stand using both base types (RTSPUCF11 or RTSF21)