California Department of Transportation
 

Contract 06-0J8904

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) )Have the cross sections for this project been sent to a a blue print company so the contractor can obtain copies?

A1) Cross sections are now available at MJ's Copy Cats(559-271-7848) at 5096 N. Blythe, Suite 115, Fresno, CA 93722.


Q2) There is an a.c. valley gutter that runs through part of the project. Will this need to be removed for the construction on this project? If so, what are the limits of the removal?

A2) No. Project Plans Sheet L-10 show existing valley gutter from approximately Station 127+50 to 130+87. Maintain existing inlet elevations per Project Plans Sheets L-1 Note 3 and X-1 Note 3. Plan Sheet C-1 inlet details indicates variable width HMA pad.


Q3) Ref note 1 on Plan sheet 14 of 27- Does this mean that all barrier is to have scupper drainage openings at 25-0 ft c/c ? If this is your requirement, please modifiy the bid documents to call for Type 60 MODIFIED Barrier.

A3) Yes. Note 1 of Plan Sheet C-1 calls for scuppers every 25 ft center. No modification is required.


Q4) Does the quantity of Item 11 include both faces of the rail element, or only the center line measurement?

A4) Item No. 11, Reconstruct Double Metal Beam Guard Railing shall be measured per Standard Specification 83-2.03 along the center line of the installed barrier.


Q5) ref Lane Closure Chart # 1, Spec. Prov. pg 48- Confirm that you will not allow any daytime work on shoulders, to be permitted on this project, as it seems you are indicating in Chart # 1

A5) Per Special Provisions Section 10-1.09 Maintaining Traffic, daytime work is permitted within project right of way where shoulder or lane closure is not required. Section 10-1.09 also defines when work shall be limited and the shoulder closed.


Q6) Ref Contract Items 19 and 22, and Cross Section Plans X-1 and X-2- Is there a valid reason that you have designed a variable width HMA section, up to 20'-0" wide, but generally 16'-0" wide, when most of the new Concrete Barrier is positioned only 1'-0" to 7'-0" from the existing edge of South Bound Shoulder? Seems that a lot of money will be spent to install a non-used, 8'-0" wide HMA pad behind the new barrier. Do you anticipate any pre-bid redesign of these sections/items?

A6) The HMA pad design considerations include future maintenance and drainage requirements. No changes are anticipated.


Q7) There is likely to be time of exosure beyond the hours of lane or shoulder closure, from the point of removal of existing MBGR, installation of HMA shoulder and new Type 60 Barrier, and reconstruction or new MBGR and end treatment installation. However, you have not called for or provided a Bid Item for Temporary K Rail to protect the area under construction. Is this an oversight ?

A7) No. K-rail needed to maintain public safety and to close the gap between existing and new barrier shall be in accordance with Section 7-1.09 Public Safety and 83-2 Barriers of the Standard Specifications.


Q8) There is approximately 2,600 lf of MBGR that removes throughout the job in various locations. Under which bid item does this get paid under?

A8) The quantities for Item #10 Reconstruct Metal Beam Guard Railing and Item #11 Reconstruct Double Metal Beam Guard Railing have been verified and include this work.


Q9) Please provide additional details of your note on sheet 17, for Item 24, Concrete Barrier Type K. How many locations and on what type roadway or bridge surface are you intending to place this permanent barrier??

A9) Item 24, Concrete Barrier Type K is Temporary Railing (Type K) and details are found in Standard Plan T-3. The 100 lf shown on Plan Sheet 17 and the locations are to be placed as directed by the Engineer. The cost for any additional Type K Railing should be included in the Barrier items in accordance with section 83-2.04 of Standard Specifications.


Q10) Your response to previous question # 7 is ambiguous, appears to put hidden requirements on the contractor, references Section 83-2 for "barrier" removal and replacement which does not appear to exist on this project. Again, we ask that you provide a Bid Item for Temporary K Rail to protect the area under construction, per details you require for construction of this project.

A10) The existing MBGR should not be removed before the concrete barrier is constructed. At some point, structures at those locations will be exposed to live traffic but during lane closures windows only. If the contractor elects to clear and grub the area including removing the MBGR before constructing the concrete barrier thus exposing the structures outside lane closures windows, then the contractor is required to protect these structures by installing temporary railing, Crash cushion and channelizers. This cost should be included in the cost of the barriers in accordance with Section 83-2.04 of the Std. Specs.


Q11) Please provide your detail for the connection of reconstructed transition rail Type WB, to new Type 60 Concrete Barrier, required at Sta 132+78.19 +/-. Type 60 Concrete Barrier does not meet the dimensions or configuration for Type WB transition railing.

A11) See Revised Standard Plan RSP A77J4 as shown in 2006 Standard Plans-Erratum No. 14. See Standard Specification Section 15-2.05 - Reconstruction.


Q12) Please provide special provision(s) to define your requirements for the "Reconstruction" of existing Double Metal Beam Guardril, Transition Railing Type WB, End Cap and Spacer, Rail Tensioning Assembly, End Anchor Type SFT, Crash Cusion, Crash Cushion Type Cat Back up, Items 11 through 17.

A12) Special Provisions Standard Plans List on page iii has a noninclusive list of the applicable Standard Plan sheets for this contract.


Q13) Ref Items 10 and 11, and your response to previous question # 4- Your current requirements for the guardrail reconstruction work are ambiguous. Quantities of available existing guardrailing less end treatments and anchors, measurement and payment per standard specifications for "Guard Rail", not barrier, are not now clearly defined. Will clarification be provided before bid date?

A13) See Revised Standard Plan RSP A77J4 as shown in 2006 Standard Plans-Erratum No. 14. See Standard Specification Section 15-2.05 - Reconstruction. No additional clarification will be provided before bid date.