Grain Systems Tanks PNEG-2400 - Manual (Page 16)

3. Bin Assembly
16 PNEG-2400 CFL Commercial Farm 4" Corrugation Externally Stiffened Grain Bin
Construction Procedures and Lifting Jack Usage
NOTE: The roof and top ring or two (2) rings will be installed prior to the beginning of bin lifting/jacking
procedures. Refer to all other procedures on sidewall and stiffener installation prior to the
start of construction.
1. Consider the starting location of the bin, as it relates to the location of doors and other accessories.
Proper placement of lifting jacks in relationship to anchor bolts could influence final locations. Note
that the sidewall sheets will be staggered.
2. Lifting jacks are used to slowly and evenly lift the bin during construction. Lifting jacks must be
properly sized and designed to carry all dead and live loads and meet all job site conditions
associated with the construction of the bin.
The number of lifting jacks required is best determined by personal experience and expertise.
Factors such as bin size, jack design, construction conditions, support surface, etc., are all to be
considered when deciding how many to use. If in doubt, use one jack on every sheet. The lifting jack
must be adequate to carry all loads. Heavy duty jacks, generally hydraulic or electric powered in the
case of large bins, should be used for commercial installation. All jacks should be secured with
braces or otherwise maintained in a stable condition.
Do not lift bins under windy conditions.
Follow the jack manufacturer’s recommendations on capacity and operations.
3. Lifting brackets are often attached through the stiffener bolt holes. Normally at least four (4) bolts per
stiffener are required, however the proper number must be determination by the construction
supervisor. If lifting from horizontal sheet seams, ensure that lifting procedures and attachments do
not damage the sidewall sheets.
4. Raise the bin just high enough to assemble the next ring. When lifting the bin, all jacks must lift at
an equal rate. Monitor the process to ensure that even lifting is occurring.
5. Bolt the next ring to the inside of the first ring. Be sure to stagger the sheets and select the proper
gauge material.
6. After assembling and tightening the bolts on the new ring (or rings), lower the bin onto the foundation.
7. Attach stiffeners to the body sheets every two (2) tiers on the external surface of the bin. Consider
leaving the sheets loose to make the attachment of the stiffeners easier.
8. Re-bolt the lifting brackets to the lowest ring in place thus far. Continue ring additions by repeating
Step 5 and Step 6 .
9. Add inside and outside ladders as you continue to raise the bin. (Refer to the manual supplied with
the ladder.)
10. Lower the tank and secure to the foundation before leaving the job site.
11. At the completion of the tank, set stiffeners over the anchor bolts and measure the tank to ensure it
is in a round condition. Consult with GSI for questions on tolerances.
NOTE: For 2 ring doors or vehicle traffic doors, special placement issues may apply. Consult the special
instructions provided with 2 ring doors or vehicle traffic doors for these options.