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Inquiries for Project 04-4A07U4

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CONTRACTOR'S INQUIRY RESPONSES

April 24, 2012

CONTRACT NO. 04-4A07U4
Const Truck Climbing Lane, Ret. Walls, And Rehab Traveled Way
County Route: Ala-580-R4.7/R8.2

 

The responses to contractors' inquiries, unless incorporated into a formal addenda to the contract, are not a part of the contract and are provided for the contractor'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 responses may be considered along with all other information furnished to prospective bidders for the purpose of bidding on the project. The availability or use of information provided in the responses to contractors' 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, and any such subsequent response or addenda should be taken into consideration when submitting a bid for the project. Inquiries submitted within seventy-two (72 ) hours of the bid opening date might not be addressed.

The Caltrans District 4 Office is located at 111 Grand Avenue, Oakland, CA 94612. Send Contractor Inquiries via email to the Duty Senior at Duty_Senior_District04@dot.ca.gov. The mailing address is P.O. Box 23660, Oakland, CA 94623-0660. The Duty Senior's telephone number is (510) 286-5209. All inquiries must include the contract number.

During the days from 04/17/12 to 04/24/12, new or updated responses were provided for the following Inquiries #
4 , 5 , 6 , 7 , 9

Total Number of Inquiries: 9

Inquiry No. Inquiry Response

1.0

This project is rebidding. When it originally bid it had 340 lf grated line drain but it has been revised and there is now over 400 feet of Grated Line Drain. The bid item list is showing item 151, grated line drain, at the original quantity of 340 feet.

Our detailing shows about 424 feet of GLD.

Question retracted.

2.0

Item 55 Roadway Excavation / Item 58Roadway Excavation Y-1 - Can the State please review the plans and quantities? Looks like the State has the same quantity in both items - hence - doubling up their quantities? Looks like item 55 will go into adjustment. Please review

The quantity of Item 58 is not included in Item 55.

3.0

We are looking at proposing a value engineered alternative to the temporary reinforced silt fence (with 5' wings) (Bid Item 2 - 27,400 LF). Because the TRSF goes across contours, up and down hills, and is located up-hill from the work area, it appears the TRSF is not for sediment control, rather for wildlife exclusion. Is this correct? Can you explain the purpose of this bid item?

The TSRF serves both as sediment control and wildlife exclusion.

4.0

What work does Caltrans specifically consider to be initial soil disturbance work and "initial ground disturbing work"? Refer to Order of Work of the special provisions.

The terms "Initial soil disturbance" and "initial ground disturbance" are technically the same activity. It is any activity that will (but are not limited to); move, grade, alter, disturb, or compact any soil or soil surface material that has not undergone any soil disturbing activities previously. These "initial disturbance" activities will also include clearing and grubbing of low growing vegetation and grasses.

5.0

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  • For the Soldier Pile Retaining Walls No. 5-6-7, on drawing sheets 410/423/440, Section B-B indicates that a reinforcing cage is to be installed inside the lean concrete backfill zone. Please confirm the limits of this cage, and provide additional details on how this cage is to interface with the wood lagging materials that are shown to be installed directly behind the steel beam front flange.

    For the limits of the reinforcing cage, please refer to the plan sheets 410, 423 and 440. The #4 rebars in the cage can be cut, where the conflict happens when installing the laggings. Please bid per the current contract bid documents.

    6.0

    Detail B11-7 for the Chain Link Railing shows pipe handrailing. The detail states pipe handrailing required only where slope is 6% or greater, or as indicated elsewhere in the plans. The elevations and typical sections appears to shows a 5% slope and pipe handrailing is not called out anywhere in the plans. Please confirm that pipe handrailing is NOT required.

    Please check top of wall elevations shown on the plans. Where slope is 6% or greater, pipe handrailing is required.

    7.0

    The General Plan sheets for Retaining Wall #3 & #4 shows the chain link railing on top of a concrete parapet. The width of the concrete parapet is not shown. Please provide the width of the concrete parapet that the chain link railing will be installed on.

    The width of the concrete parapet is based on the wall thickness which is shown on Typical Section sheets of the Retaining Walls.

    8.0

    Is Item 101: Steel Soldier Pile ( W14 x 211) restricted to domestic only sources of manufacture due to Federal Aid on this project, i.e. Buy America Act?

    Submitted for consideration.

    9.0

    Can you please re-post the Plan Holders List for the referenced project? The list provided online seems to be incomplete.

    See the link below: