250050 R1
31
4.7. Critical Assembly Requirements
To ensure a successful, safe and reliable outcome you must comply with the following assembly techniques and
practices:
1. Comply with all local code and jurisdictional requirements applicable to your grain dryer installation.
2. Design and build foundations with the necessary strength for the loads they must support, and for local soil
conditions. Westeel foundation guidelines are based on specific stated conditions and may not be applicable
to local conditions.
3. Your foundation must provide uniform and level support to the structure being supported. Surface
imperfections causing gapping must be remedied. This may involve, but not be limited to a) grouting under
the bottom ring of a non-stiffened bin or tank, and b) shimming under the uprights of a stiffened bin or
tank, or under the legs of a hopper.
4. Make sure that the proper hardware is utilized for all bolted connections. If a shortage occurs, do not
substitute. Take the necessary steps to obtain the proper hardware. Make sure nuts are tightened to the
required torque values as specified in the appropriate assembly manual.
5. Comply with all assembly instructions provided in the appropriate assembly manual to make sure your
whole grain dryer is constructed safely.
Important: Do not deviate from the wall sheet and upright layouts
provided.
6. Before anchoring your structure to its foundation, make sure the structure is round. The maximum variation
from perfect roundness is 3/4" on the radius. Locate anchor bolts toward the outside of the anchor bolt
holes (away from the circle) to permit the incremental expansion that can occur with the initial filling.
7. When installing roof stiffening rings, if it is necessary to shorten the stiffening ring tubes, shorten them as
little as possible. Initially the nuts on the expanders should be centered and as close together as possible.
When tightening, share the amount of take-up between expanders such that the nuts remain centered, and
the amount of engagement between all expanders on the same ring is equalized.
8. If extending an existing bin or tank, ensure that the foundation is adequate for the increased loads it must
support.
9. If installing an existing bin on a hopper, make sure the bin is designed for a hopper application, and that the
foundation is capable of withstanding the substantial point loads that the hopper legs apply. If uprights are
present, make sure that they are supported.
10. Make sure that an integral end-to-end connection exists between all mating uprights. Successive uprights
must not overlap.
11. Vertical tolerances between uprights and wall sheets are tight. This can be affected by “jacking” techniques,
which can allow the tolerance to grow or shrink depending on the technique used. The gapping between
successive uprights must be monitored to ensure that upright holes align with wall sheet holes.
12. If catwalks are being installed on the structure, upright catwalk upgrades are likely required. The upgraded
stiffeners must be installed in the correct locations to support the intended catwalk loads. Also, the
structure must be properly oriented to ensure the eventual correct alignment between the catwalks and the
supporting uprights. Finally, the connectors that tie into the uprights and support the catwalks are best
installed during assembly of the structure. See the catwalk assembly manual for additional details.
EASYDRY® WIDE-CORR CENTURION® GRAIN BIN – GRAIN BIN DRYER
