198935 R17
11
3. Before You Begin
3.1. Bin Design and Capacity
Standard Westeel Grain Bins are designed for:
1. Non-corrosive free-flowing materials up to 55 lbs/ft
3
(880 kg/m
3
) average compacted bulk density.
2. Maximum horizontal wind pressure based on 94 mph (151 km/h) as per NBCC 2015 and
105 mph (169 km/h) as per ASCE 7-16.
3. Zero seismic activity.
Note
Seismic resistance in grain bins varies with height and diameter. Many standard designs have
significant seismic capabilities. Designs can be reviewed and/or modified to reflect local seismic
requirements.
4. Roof loading capabilities vary with diameter, peak load and snow load.
a. Peak Loads – standard peak loads follow.
Upgrades are available.
Table 1.
Peak Loads for Various Roofs
Size
Type of Roof
Load (lbs)
Load (kg)
15’ to 24’
non-structural
4000 lbs
1814 kg
27’ to 48’
non-structural
5000 lbs
2268 kg
51’ & 54’
non-structural
8000 lbs
3629 kg
48’ to 108’
structural
20,000 lbs
9072 kg
b. Roof Snow Loads (RSL) – at the above stated standard peak loads, standard RSLs vary with diameter and
range from 16 psf (78 kg/m
2
) to 45 psf (220 kg/m
2
).
Upgrades are available
.
Note
The correlation between ground snow load (GSL) and roof snow load (RSL) for grain bin designs
vary with jurisdictions. In the US GSL = 2 x RSL. In Europe GSL = 1.25 x RSL. In Canada the
correlation between GSL and RSL varies and is site specific.
c. For maximum roof snow load capacities for various sizes and types of roofs, refer to the Roof Design
Capacities sections that follow.
HOPPER LADDER MAKE-UP PACKAGES – WIDE-CORR® GRAIN BIN
