38
250050 R1
6.3. Curb Footing — Floating Slab Foundation
1. Choose a site that is well drained, and has a minimum soil-bearing capacity of 4000 lbs/ft
2
(192 kPa). If soil-
bearing capacity is not known, consult a local engineering representative.
2. Use minimum 4" to 6" (100 mm to 150 mm) of well-compacted coarse granular material below slab and
curb footing.
3. Concrete strength shall be minimum 3000 psi [21 MPa] compressive strength.
Figure 9.
Curb Footing Foundation Layouts
Note
For dimensions for specific bin sizes, refer to the tables in the following sections.
4. The foundation must be level to within 1/4" over a span of 4 feet [6 mm over 1200 mm]. Any variance from
level must be shimmed under an upright. (See
Section 6.44 – Commercial Bin Upright Assembly on page
5. Locate anchor bolts as shown in
, using the dimensions provided in the following Curb Specifications
tables, to ensure bin roundness.
6. Re-bar end laps are not included. Add 15" [380mm] for each lap. To estimate weight of end lap: add 0.5 lbs.
for #3 and 1.0 lbs. for #4, 0.3 kg for 10M and 0.6 kg for 15M.
7. Concrete slump for reinforced wall to be 5" (130 mm) maximum and 2" (50 mm) minimum.
8. Reinforcing bars for concrete reinforcement shall conform to Grade 40, 40000 psi (280 MPa) or Grade 60,
60000 psi (420 MPa) as called for in the following: ASTM² A615, A616, or A617.
9. Welded wire mesh for concrete reinforcement shall conform to ASTM² A185, or A497.
1
American Concrete Institute
2
American Society for Testing Materials
EASYDRY® WIDE-CORR CENTURION® GRAIN BIN – GRAIN BIN DRYER
