Accessories PNEG-318 Owner's manual

24 PNEG-318 Concrete Foundation Recommendations for GSI Grain Bins
5. Frost Free Pad FCDL
Anchor Bolt Placement
Having poured and leveled the concrete, use the center stake and straight 2 x 4 again to find the bolt circle
radius for the outside hold-down brackets. Select a starting point and stretch a pre-measured chord along
the imaginary circle formed by the bolt circle radius. Take into consideration the placement of these bolts
so as not to interfere with the positions of bin doors and transitions. (Refer to following chart below for
necessary radii and chord lengths.) Take the time and work carefully since accuracy is important.
NOTE: Top edge of slab where the bin wall sets must be held to within 1/8" of level.
Figure 5A
NOTE: Refer to chapter 4 on Page 21 for additional anchor details.
For stiffener anchor bolt locations on commercial tanks, refer to commercial tank section found later in this
manual or call the GSI engineering department.
Bin Diameter “B” Bolt Circle Radius # of Anchors “E” Chord Distance
12' 6' - 3-1/4" 8 4' - 9-5/8"
15' 7' - 9-1/8" 10 4' - 9-9/16"
18' 9' - 3-1/16" 12 4' - 9-1/2"
21' 10' - 8-15/16" 14 4' - 9-3/8"
24' 12' - 2-7/8" 16 4' - 9-5/16"
27' 13' - 8-3/4" 18 4' - 9-3/16"
30' 15' - 2-11/16" 20 4' - 9-3/16"
33' 16' - 8-9/16" 22 4' - 9-1/16"
36' 18' - 2-1/2" 24 4' - 9-1/16"
42' 21' - 2-5/16" 28 4' - 8-15/16"
48' 24' - 2-1/8" 32 4' - 8-7/8"
54' 27' - 1-15/16" 36 4' - 8-3/16"
60' 30' - 1-3/4" 40 4' - 8-3/4"