California Department of Transportation
 

Contract 10-0U8704

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) Reference Amendments to the Standard Specifications, Section 39-1.12, "Smoothness" (pg. 123 of 283). The smoothness specification requires the contractor to profilograph and determine must grinds and correct these must grinds with one of the approved methods outlined in the specifications. Since the contractor is only placing 0.03 to 0.1' of RHMA-G there is no opportunity to correct any existing condintions.

A1) The bidders concerns have been considered. Section 39-1.12, "Smoothness," is an amended Standard Specification and will not be revised. The Contractor must make every effort in their construction operations to attain the required smoothness based on existing conditions. Refer also to "Grade Control and Surface Smoothness" for "COLD PLANE ASPHALT CONCRETE PAVEMENT," in Section 10-1.13 of the Special Provision. 31Jan11.


Q2) Section 13-1.01 of the Special Provisions states "The Contractor shall not allow any personnel or equipment on the Railroad right of way." However, the project requires us to perform work up to 25' (from center of tracks to where we're performing work) of the tracks for grinding and re-paving. Normal RR ROW is 50' from center of tracks. Please review conflict between specs and plans and advise, including implications for RR insurance requirements.

A2) The Contractor will be expected to plan their work so as not to impact the railroad tracks or right of way. The Contractor will be allowed to pave up to 25' away from centerline of tracks but must not interfere with railroad operations. If any work becomes necessary within 25' of the centerline of the tracks, the Railroad will have to be notified and a flagger scheduled. Refer also to Section 5-1.18 "PROPERTY AND FACILITY PRESERVATION" of the Amendments to the Standard Specifications. 31Jan11.


Q3) Highway Lane Closure chart of the SP pg41 indicates five hour window in the middle of the day for the work in downtwon Gustine. Why such a small window? The population of Gustine is roughly 5,000. Please allow the contractor a much larger window to construct our work that is required. The population does not warrant such a small window. Ramp closures on I5 are eight hours? Please have design look at this again.

A3) Please bid in accordance with the contract plans and specifications. The Contractor may request adjustments to the lane requirements. Refer to Section 10-1.06, "MAINTAINING TRAFFIC," of the Special Provisions: "If minor deviations from the lane requirement charts are required, a written request shall be submitted to the Engineer at least 15 days before the proposed date of the closure. The Engineer may approve the deviations if there is no significant increase in the cost to the State and if the work can be expedited and better serve the public traffic." Please refer to Addendum No. 2, dated February 4, 2011. 4Feb11.


Q4) This question is in reference to Bidders Inquiry Question Number 1 referencing “Smoothness”. CalTrans has answered this question as follows…

A1) The bidders concerns have been considered. Section 39-1.12, "Smoothness," is an amended Standard Specification and will not be revised. The Contractor must make every effort in their construction operations to attain the required smoothness based on existing conditions. Refer also to "Grade Control and Surface Smoothness" for "COLD PLANE ASPHALT CONCRETE PAVEMENT," in Section 10-1.13 of the Special Provision. 31Jan11.

Based on this answer it is understood that due to Existing Conditions (i.e. Crack Fill, Bumps, etc.) and per Special Provisions Section 10.13, pg 52, and the design of the project (i.e. Placing .10’ of RHMA-G), corrective grinding is necessary PRIOR to placing RHMA or HMA in order to meet the “Smoothness” Specification as stated in Section 39-1.12. Based on the Special Provision 10.13 all “Grade Control and Surface Smoothness” Grinding will be paid for per the Unit Price of Bid Item Number 11 by the Square Yard. Please confirm.

A4) No, "Grade Control and Surface Smoothness" requirements for "Cold Plane Asphalt Concrete Pavement" (pg. 52) apply only to the cold planing work shown on the contract plans. The requirements for smoothness in Section 39-1.12 of the amended Standard Specifications apply to the completed product of HMA or RHMA. If any smoothness correction becomes necessary, the work will be included in the contract prices paid per ton for RHMA. 9Feb11.