California Department of Transportation
 

Contract 10-0M2404

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.

Q1) Spec Section 10-1.17 "Earthwork" under Str Exc (Soldier Pile Wall) directs that "construction of soldier pile wall shall proceed in lifts from the top down." Plan Sheet 17 detail Paart Plan Of Lagging Member shows lagging overlaping the pile flange 2 1/2" min. The W8x21 pile have a 5 1/4" flange allowing a 2 1/2" surface upon which the lagging shall rest. Therefore, it looks as if the lagging will be end sawn on the slope of the road and fit tight between piles. It doesn't seem that there will be a way to slip the lagging in one end at a time in order to build from the top down. Do we need bigger piles?

A1) No additional information will be provided. Contractor to bid per contract documents.


Q2) Will advance flaggers be required?

A2) Yes, it's likely that advance flaggers will be required. Refer to Note 7 on Standard Plan T13 for Traffic Control System for Lane Closure on Two Lane Conventional Highways.


Q3) SR108 is closed for the winter. When will it open to allow a job visit?

A3) The Department is anticipating that SR 108 may be open to public traffic east of Kennedy Meadow by the end of the first week of May.


Q4) This project has three concrete mixes totaling 19 cy and is at least two hours haul from the nearest approved batch plant. The requirement for fly ash makes it difficult to add bag cement at the jobsite.It is requested that we be allowed to use a hydration stabilizer additive in order to extend the 90 minute limit for mix and place to 3 hours or so. The additive would be "Delvo" by BASF or "Recover" by Grace.

A4) The decision will be up to the Resident Engineer. If an additive is allowed it must be on the Department's approved product list for Concrete Admixtures: http://www.dot.ca.gov/hq/esc/approved_products_list/.


Q5) Please consider designating some Specialty Items for this bid schedule such as Erosion Control, Painting, Guardrail and Striping.

A5) Section 5-1.055 SUBCONTRACTING in the Amendments to the Standard Specifications requires the contractor to perform at least 30% of the contract work with his/her own forces. With the change to the subcontracting percentage, the Department no longer uses specialty items.


Q6) Will a retarding admixture be allowed for the Lean, Class 1 & Class 4 concrete mixes to allow for extended delivery time (>90 minutes) of ready-mix concrete?

A6) The decision will be up to the Resident Engineer. If an additive is allowed it must be on the Department's approved product list for Concrete Admixtures: http://www.dot.ca.gov/hq/esc/approved_products_list/.


Q7) As of May 10th, the road is still closed? How can a site visit be arranged?

A7) Submitted for consideration.


Q8) Can you provide an electronic link to the cross - sections?

A8) Refer to Addendum No. 1, dated May 5, 2009. Cross sections are available for inspection at 611 San Juan Avenue, Stockton, CA 95203, by appointment, (209) 948-7849.


Q9) Are there studs on the piles? None are shown on the plans but they
are referred to in the specifications? Quantity? Location?

A9) Submitted for consideration.