Contract 06-0C4304

The responses to bidder's inquiries, unless incorporated into a formal addendem to the contract, are not a part of the contract and are provided for the bidder's convenience only. In some instances, the question and answer may represent a summary of the matters discussed rather than a word-for-word recitation. The availability or use of information provided in the responses to bidder's inquiries is not to be construed in any way as a waiver of the provisions of Section 2-1.03 of the Standard Specifications or any other provision of the contract, the plans, Standard Specifications or Special Provisions, nor to excuse the contractor from full compliance with those contract requirements. Bidders are cautioned that subsequent responses or contract addenda may affect or vary a response previously given.

Q) I notice that there is no lime treated aggregate or warrenty spec. Is this an oversite?

A) There was no oversite, no lime treatment and warranty on this project.

Q) AC content required is 7.0 - 9.0%. Aggregate gradation is typical Caltrans Type G. Typical Type G ARHM air voids requirement is 3 or 4%. Is the present requirement of 6.0% air voids what the designer has in mind? Without modifying the aggregate structure to accomodate additional fines and/or coarser top-size aggregate this specification as-written seems impracticable.

A) Yes, this is what the designer had in mind. The air voids are attainable by altering the coarseness or fineness of the combined aggregate within the specified gradation taking into account the specified binder content range and crumb rubber percentage.