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Design Data
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A. General
The foundation design was based on soils investigation by Hepworth PawIak Geotechnical,
Inc. Job no. 107-0861 dated January 29, 2008.
Maximum allowable bearing pressure - 1500 psf
Lateral soil pressure 45 pcf
B. Excavation
1. Owner/contractor shall provide all necessary sheeting, shoring and bracing where
required to properly and safely completes the work.
2. Avoid excessive wetting or drying of the foundation excavation during construction.
Keep excavations reasonably free of water at all time and completely free of water
during placement of concrete.
Concrete:
A. Concrete Requirements
Concrete has been designed and shall be constructed in accordance with the latest
editions; of the American Concrete Institute Building Code, ACI 318 and
Specifications for Structural Concrete for Buildings, ACI 301. Provide hot or cold
weather protection per ACI 305 & 308.
1. Concrete shall have a minimum compressive strength at 28 days of: 3000 psi.
2. Provide Type 11 cement throughout with 4% air entrainment.
3. Mechanical vibrate concrete.
4. No admixtures shall be used without approval by the engineer.
5. Addition of water to the batch material for insufficient slump is not permitted.
6. Do not place pipes, ducts or chases in the structural concrete without approval of the
engineer.
7. Thoroughly dean all case and construction joints prior to placing concrete in adjacent
pour.
8. Concrete shall not be in contact with aluminum.
B. Reinforcing
Detailing, fabrication and erection of reinforcing steel bars shall comply with the ACI
Manual of Standard Practice for Detailing Reinforced Concrete Structures ACI 315.
1. Reinforcing Bars shall be ASTM A615 -Grade 40.
2. Welded wire fabric shall conform to ASTM A185. Furnish in flat sheet only.
3. Concrete protection for reinforcement:
Cast against and permanently exposed to earth 3 in.
Exposed to earth or weather.....#6-#18 bar 2 in.
#3-#5 bar 1 1 in,
Not exposed to earth or weather..slabs & walls 3/4 in.
Beams & cols. 1 1/2 in.
4. Reinforcing lap splices shall be a minimum of 36 bar diameters unless noted
otherwise. Lap wire fabric reinforcement one full mesh plus 2" at sides and ends
and wire together.
5. Splices in horizontal beams and walls shall occur at midspan for the top bars
Andover supports for the bottom bars.
6. Provide corner bars of equal size and spacing around corners.
7. Provide 2-#5 bars with a minimum of 2'-0" projection beyond the sides of all
openings in walls and slabs. Provide 1-#5 x 4'-0" diagonally at all re-entrant
corners of slabs.
8. Provide accessories necessary to properly support reinforcing at the positions
shown on the plans.
9. Reinforcing spacings are maximum on center and all reinforcing is continuous,
unless noted.
C. Slabs
1. Provide control joints at 12'-0" maximum spacing or as shown on drawings.
2. Provide minimum 4" compacted gravel under slab on grade. The material shall
consist of minus 2 -inch aggregate w/less that 50% passing the No. 4 sieve and less
than 2% passing the No. 200 sieve.