250050 R1
27
4.1.1 Roof Design Capacities for Non-Structural Roofs
Table 2.
Maximum Roof Snow Load at STANDARD Peak Load
Bin Series
Std Peak Load
Standard Roof
Plus Upgrade 1
Plus Upgrade 2
lbs (kN)
psf
kPa
psf
kPa
psf
kPa
24
4000 (17.8)
21
1.01
39
1.87
27
5000 (22.2)
24
1.15
39
1.87
30
20
0.96
32
1.53
40
1.92
36
24
1.15
30
1.44
38
1.82
Table 3.
Maximum Roof Snow Load at UPGRADED Peak Load
Bin Series
Upgraded Peak Load
Standard Roof
Plus Upgrade 1
Plus Upgrade 2
lbs (kN)
psf
kPa
psf
kPa
psf
kPa
24
8000 (35.6)
17
0.81
26
1.24
27
10000 (44.5)
19
0.91
28
1.34
30
15
0.72
24
1.15
33
1.58
36
18
0.86
23
1.10
31
1.48
Note
1. Standard roofs are adequate for many applications but additional capacity is available when optional upgrade packages are used.
2. Upgrade packages include roof stiffening rings and/or rib supports.
3. For peak load between standard and upgrade limits, a straight line interpolation can be used to determine maximum roof snow load.
4. Higher level upgrade kits include all components from lower level kit; only one upgrade kit needs to be ordered for any given bin.
4.1.2 Roof Snow Load vs. Ground Snow Load
The Roof Design Capacity tables reflect roof snow load (RSL) values. These are design values. Often,
comparisons are made to ground snow values (GSL). These are not the same. The conversion from GSL to RSL
varies between jurisdictions and is governed by building codes:
• In the United States, for grain bins, GSL = RSL x 2
• In Europe, for grain bins, GSL = RSL x 1.25
• In Canada, for grain bins, the GSL/RSL conversion varies with every location across the country. However, for
comparison purposes, the US conversion can be used as an approximation.
Therefore, when comparing against competitive GSL values in the US, double the above values. When
comparing against competitive GSL values in Canada, double the above values for a reasonably close
approximation.
EASYDRY® WIDE-CORR CENTURION® GRAIN BIN – GRAIN BIN DRYER