52-600_E_B06-05-09
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USE WITH 2006 STANDARDS.
Use in all projects requiring reinforcement.
10-1.__ REINFORCEMENT
Reinforcement shall conform to the provisions in Section52, "Reinforcement," of the Standard Specifications and these special provisions.
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The provisions in "Welding Quality Control" of these special provisions do not apply to resistance butt welding.
3. Use only when the plans show splicing of new reinforcement to existing reinforcement.
When joining new reinforcing bars to existing reinforcement, sample splices shall be made using only the deformation pattern of the new reinforcement to be spliced.
4*. Use when the plans show ultimate splices for columns or cast-in-place piles. Edit "columns and cast-in-place piles" to suit project.
The following shall apply to ultimate splices for bar reinforcing cages of columns and cast-in-place piles where the longitudinal bars are spliced vertically at the job site inor above their final positions:
1.Instead of being removed from the completed lot, sample splices may be prepared in the same manner as specified in Section 52-1.08C(2)(a), "Production Test Requirements for Service Splices," of the Standard Specifications for servicesample splices. These sample splices shall be tested in conformance with the requirements in Section 52-1.08C(3), "Ultimate Butt Splice Test Criteria," of the Standard Specifications.
2.Splices may be encased in concrete prior to having the QCM review, approve, and forward each Production Test Report to the Engineer. Should the Contractor exercise this option, it is expressly understood that the Contractor will not be relieved of the Contractor's responsibility for incorporating material in the work that conforms to the requirements of the plans and specifications. Material not conforming to these requirements will be subject to rejection.
Use Paras 5 and 6when the plans show column or pile rebar cages that are 4 feet in diameter and larger.
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For bar reinforcing cages measuring 4 feet in diameter and larger:
1.At least 4 vertical bars of each cage, equally spaced around the circumference, shall be tied at all reinforcement intersections with double wire ties.
2.At least 25 percent of remaining reinforcement intersections in each cage shall be tied with single wire ties. Tied intersections shall be staggered from adjacent ties.
3.Bracing shall be provided to avoid collapse of the cage during assembly, transportation, and installation.
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Successful completion of these minimum baseline requirements for reinforcement cages 4 feet in diameter and larger will in no way relieve the Contractor of full responsibility for engineering the temporary support and bracing of the cages during construction.
Use Paras 7 thru 9 when pinned column-footing connections or when stacked bond masonry block sound walls are shown on the plans. Make sure the plans show these connections to be galvanized. Add SSP52-680.
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Reinforcement shown on the plans to be galvanized shall be galvanized in conformance with the requirements in ASTM Designation: A 767/A 767M, Class 1, except that chromating will not be required.
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Within areas where galvanized reinforcement is required, tie wire and bar chairs or other metallic devices used to secure or support the reinforcement shall be galvanized, plastic coated, or epoxy coated to prevent corrosion of the devices or damage to the galvanized reinforcement.
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Galvanized surfaces that are abraded or damaged caused by shipping, handling, or installation shall be repaired as specified in Section 75-1.05, "Galvanizing," of the Standard Specifications.