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2004 English Special Provisions to Item 420 - Concrete Structures (All)


SP420-004  PDF  RTF   - For project 0315-07-022 in Washington County. The computer software program, Concrete Works, will be used to predict concrete temperatures. Do not place concrete when the program predicts a maximum temperature exceeding 160F. One-Time Use.
SP420-003  PDF  RTF   - VOID - DO NOT USE. Clarifies the requirements for application of interim curing for bridge slabs and modifies the pay adjustment formula for under strength concrete to one that is not as harsh. Required on all construction projects with Item 420 (unless 420---002 is used) beginning with the December 2005 letting. (Change Memo: de-23-07). Statewide Use.
SP420-002  PDF  RTF   - Clarifies the requirements for application of interim curing for bridge slabs and modifies the pay adjustment formula for under strength concrete to one that is not as harsh. Required on all projects with Item 420 beginning with the February 2008 letting. Replaces SP420-001 . (Change Memo: de-23-07). Statewide Use.
SP420-001  PDF  RTF   - Provide for final texturing of concrete surfaces. Replaced by SP420-002 . (Change Memo: de-66-04). Statewide Use.

2004 English Special Provisions by Item (All)
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