Tamarack Rail System Wind & Snow Load Ratings

Two Rail Sizes to Meet Most Design Needs
Tamarack Flush Mount Rail System is the
perfect mix of strength and economy
1.6-inch Rail
Use this rail for attractive, low prole mounting
in areas with light or no snow load. Use with
spans of up to 6-feet at 140 MPH wind and no
snow and up to 180 MPH wind with 4-foot spac-
ing. Maximum load is 40 PSF snow load at 180
MPH.
2.3-inch Rail
Use this rail heavysnow loads and longer spans.
Use with spans of up to 6-feet at 160 MPH wind
and up to 40 PSF snow load with 4-foot spacing.
Maximum load capacity is 120 PSF at 180 MPH
wind with 2-foot spacing.
Rail Selection Table
e table at right is derived from
a structural analysis prepared by
a Professional Engineer. e rail
spans are based on ASCE 7-10
code in roof zone 1, Exposure
Class B, Building height up to 15
feet and Roof Slope of 28° to 45°.
For other criteria please rerquest
our structural analysis, available
with a PE stamp for most states.
Snow (PSF) Wind (MPH) 24 48 60 72 84
100
120
2.3
140
1.6 2.3
160
180
2.3
100
120
140 1.6
2.3
160
180
100
120
2.3
140 1.6
160
2.3
180
100
120
140 1.6
160
2.3
180
100
120
140
1.6 2.3
160
180
100
120
2.3
140
1.6
160
180
100
120
140
1.6
160
180
100
120
140
2.3
160
180
50
60
120
40
Rail Span (inches)
Load
0
20
30
35