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Section 03310

STRUCTURAL CONCRETE

Part 1

GENERAL

LOI

SCOPE OF WORK

A. The Contractor shall provide all labor, materials, tools and equipment required to furnish and install structural concrete complete with all necessary accessories, as described in this section and as shown on the Contract Drawings.

1.02

SUBMITTALS

    • 1.

      The Contractor shall submit design mixes for each type of concrete application, i.e. Pumped, Lightweight, colored, white, etc. Submit design mix and 3- consecutive laboratory test results of the same design mix as per ACT 318 from a testing laboratory approved by the Architect. Shop Drawings, design mix and test results must be reviewed by Architect prior to placement of any concrete. If test results are not submitted as specified, submit a field test record, several test records of tlial mixes, but the design mix shall be for a 28-day strength of 1200 psi greater than that specified. See "Minimum Cement" this specification.

    • 1.03

      NOTIFICATION

    • A.

      Contractor shall notify the Architect for inspection of reinforcing prior to placement of concrete and during all pours. Notification shall be given at least two weekdays before the concrete placement is scheduled.

      • 1.04

        QUALITY ASSURANCE

  • A.

    ACI CODE: Comply with American Concrete Institute's "Building Code Requirements for Reinforced Concrete (ASI 318) and "Specification for Structural Concrete for Buildings" CACI 301).

  • B.

    CONCRETE TESTING: Confonn to UBC Standard 26-10. Each day concrete is placed, take a minimum of four test cylinders. If more than 100 cubic yards or 5,000 sq. ft. of slab surface is placed in a single day, take an additional four minimum test cylinders for each additional 100 cubic yards or 5,000 sq. ft. of slab surface. Test the first of each group offour at seven days the second and third at 28 days and retain the fomth as a spare, which may be discarded after 60 days if strength is not questionable. No individual strength test (average of two cylinders) shall have a value more than 500 psi below the specified strength, and the average of any three consecutive strength tests shall be equal to or greater than the specified strength. Perfonn and document standard slump test as per ASTM C-143 at a frequency of one test per truckload or Ready-Mixed Concrete, or batch of Job-Mixed Concrete. Slump shall confonn to specifications. Document ambient air and concrete

1 Section 03310

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