Frost free pad unstiffened 2.66" farm bin, Outside bin hold-down chart (2.66" corrugation) – Grain Systems Bin Accessories PNEG-318 User Manual
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PNEG-318 Concrete Foundation Recommendations for GSI Grain Bins
10. Frost Free Pad Unstiffened 2.66" Farm Bin
Outside Bin Hold-Down Chart (2.66" Corrugation)
Outside bin hold-downs should be used on all non-stiffened bins/silos. When anchoring the bin, be sure
the vertical seams of the bin/silo align with the U-bolts or single anchor bolts in the foundation. Bin/silos
up to 36' diameter and 12 rings tall or shorter may be anchored using either the U-bolt/J-bolt combination
or the single anchor bolt. Bin/silos 42' and greater in diameter and all 13 rings or taller should be anchored
using the single anchor bolt. Bins/silos 13 rings and taller require double hold-downs. The sidewall must
be field drilled to attach the hold-down bracket located between the horizontal seams. For the case of 42'
and larger bin/silo, no greater than 12 rings tall, double U-bolt/J-bolt combination anchors may be used as
an option to the single anchors bolt. Additional hold-downs are required with this option. Refer to
for outside hold-down bracket details.
Single Anchor Bolt Chart
U-Bolt/J-Bolt Combination Chart
Bin Diameter
“B” Bolt
Circle Radius
For 3-12 Rings
Double Hold-Down Anchors
Required for 13-15 Rings
# of
Anchors
“E” Chord
Distance
# of
Anchors
“F” Chord
Distance
12'
6' - 1-3/8"
4
8' - 7-3/4"
8
4' - 8-3/16"
15'
7' - 7-1/4"
5
8' - 11-5/16"
10
4' - 8-3/8"
18'
9' - 1-3/16"
6
9' - 1-3/16"
12
4' - 8-1/2"
21'
10' - 7-1/16"
7
9' - 2-1/4"
14
4' - 8-9/16"
24'
12'-1"
8
9' - 2-15/16"
16
4' - 8-9/16"
27'
13' - 6-7/8"
9
9' - 3-7/16"
18
4' - 8-9/16"
30'
15' - 0-13/16"
10
9' - 3-3/4"
20
4' - 8-9/16"
33'
16' - 6-11/16"
11
9' - 3-15/16"
22
4' - 8-9/16"
36'
18' - 0-9/16"
12
9' - 4-1/8"
24
4' - 8-9/16"
42'
21' - 0-7/16"
14
9' - 4-3/8"
28
4' - 8-1/2"
48'
24' - 0-1/4"
16
9' - 4-1/2"
32
4' - 8-1/2"
60'
29' - 11-7/8"
20
9' - 4-9/16"
40
4' - 8-1/2"
Bin Diameter
“B” Bolt
Circle Radius
For 3-12 Rings
Optional Double Hold-Down
Anchors
# of
Anchors
“E” Chord
Distance
# of
Anchors
“F” Chord
Distance
12'
6' - 2-3/16"
4
8' - 8-7/8"
8
4' - 8-3/4"
15'
7' - 8-1/16"
5
9' - 0-1/4"
10
4' - 8-15/16"
18'
9'-2"
6
9'-2"
12
4' - 8-15/16"
21'
10' - 7-7/8"
7
9'-3"
14
4' - 8-15/16"
24'
12' - 1-13/16"
8
9' - 3-5/8"
16
4' - 8-7/8"
27'
13' - 7-11/16"
9
9'-4"
18
4' - 8-7/8"
30'
15' - 1-5/8"
10
9' - 4-1/4"
20
4' - 8-13/16"
33'
16' - 7-1/2"
11
9' - 4-3/8"
22
4' - 8-13/16"
36'
18' - 1-3/8"
12
9' - 4-1/2"
24
4' - 8-3/4"
42'
21' - 1-1/4"
28
4' - 8-11/16"
48'
24' - 1-1/16"
32
4' - 8-11/16"
60'
30' - 0-11/16"
40
4' - 8-5/8"