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The actual latex over lay is variable. The milling operation will remove approximately 1.25”, the Hydro will then remove the failing and existing concrete to at least 1” below the top mat of steel or as directed by the Engineer during the demo operation as stated in Section 425 of the R&B Specs. The demo should continue thru the joints. In accordance with Section 425.03 paragraph 6 “Expansion joints and dams shall be maintained through the overlay. A bulkhead equal in thickness to the width of the joint shall be installed to the required grade and profile prior to concrete placement.” VDOT considers this incidental and is not measured for additional payment.
Bid Item 0090 Reconstruct Expansion Joint will be marked by the Engineer during the Hydro or Milling operation and will be determined based on the condition of the existing joint. In essence if the deck or backwall has deteriorated to where additional forming above and beyond the bulkhead discussed above is required to reestablish the shape of the deck or backwall the LF of repair will be measured for payment under bid item 0090.
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7/16/2020
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