Grain Systems Tanks PNEG-1000 - Manual (Page 20)

6. Bolting Requirements
20 PNEG-1000 2.66" Commercial Tank Stiffener and Sidewall
* 105' diameter, 28 ring and taller tanks will utilize 7/16" x 2-1/2" bolts in the vertical seam.
3/8" x 2" bolts are provided for the overlap connection in the horizontal seam.
See the 105' tall tank series manual PNEG-972 if building 105' tanks 28 rings or taller.
*** A 3/8'' x 2'' bolt may be needed at first stiffener to sidewall bolt.
Before bolting sheets together, apply a single strip of caulking on both sides and 12" on both sides of top
edge. DO NOT CAULK BOTTOM EDGE.
1. When attaching a 13Q sheet to a 14Q sheet, use the 5/16" x 3/4" bin bolt on horizontal seam.
2. When attaching an 6Q sheet to a 8Q sheet, use the 3/8" x 1" bin bolt in the horizontal seam.
3. All base sheets are bolted to the base angle with 5/16" x 1-1/4" bin bolts (independent of
sidewall gauge).
Hardware Requirements
IMPORTANT: Do not tighten bolts to exceed the torque specifications listed below.
Torque (ft. lbs.)
Bolt Size Minimum Maximum
5/16"-18 15 20
3/8"-16 35 42
7/16"-14 65 72
1/2"-13 95 105
NOTE: Grade 2 bolts are designated with a plain head.
NOTE: Grade 5 bolts are designated by three (3) slash marks on the head.
NOTE: Grade 8 bolts are designated by six (6) slash marks on the head.
NOTE: Grade 8.2 bolts are designated by six (6) slash marks on the head in a
sunrise pattern.
Under no condition shall any other bolts be substituted for those supplied by
grain systems.
CAUTION