GSi TopDry Autoflow, Руководство по монтажу

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Chapter 3: Foundation
Frost Free Foundation Guidelines
The foundation design is based on a minimum allowable soil bearing capacity 3000 PSF. Bearing capacity
of the soil must be determined by geo-technical investigation and be of uniform bearing capacity.
• Foundation site must be well drained and free of vegetation or debris.
• Concrete must have a minimum compressive strength of 3000 PSI at 28 days.
• Requirements for reinforcement do not include overlap.
• Lap all circumferential bars 35 bar diameters and stagger all laps in plan 3 ft.
• All material used for backfill inside the ring wall must be clean, well graded, crushed stone of
sand-gravel mixture. Backfill must be placed at 6 in. lifts and well compacted.
• The optional #4 rebar grid can be substituted for the wire mesh in most cases. Place the #4 bars in
the pad in an 18 x 18 in. grid.
Figure 3-7 Frost free foundation
A Outside radius E “N” #6 bars evenly spaced
B
See below table
F
Grade
C Well compacted fill G 1/2 in. expansion joint
D Vapor barrier H
2 layers — 6 x 6 - 6/6 wire mesh
Table 3-1 Specifications for 36 ft. diameter bin
Ring
B N Outside Radius
Sq.Ft. Mesh
6 x 6 - 6/6
Optional 18 x 18
in. grid
Length #6
bar
Total Cu.
Yds.
Concrete
6 1 ft. –3 in. 2 18 ft. –9 in. 2000 1300 ft. 300 ft. 26
7, 8
2 ft. –0 in. 2 18 ft. –11 in. 2000 1300 ft. 400 ft. 30
9, 10
2 ft. –10 in. 3 19 ft. –0 in. 2000 1300 ft. 600 ft. 33
11, 12
3 ft. –11 in. 4 19 ft. –6 in. 2000 1300 ft. 900 ft. 39
34 PNEG-4936 36 Ft. TopDry Autoflow