California Department of Transportation
Caltrans > District 3 > District 3 Divisions > North Region Construction > Projects Out to Bid > Project

North Region Construction - Project

Contract
Bid Date
County Route PM/KP
Description
01-470214
08/12/08
 Hum-101-R66.8/R67.4 (KP)

CONSTRUCT SOLDIER PILE TIEBACK RETAINING WALL
Bidder Inquiry / Response
7/11/08
 Inquiry: 1) Section 5-1.18 Project Information states that the Geotechnical report dated May 15, 2006 would be included in the Informational Handout. The Informational Handout included in my Bid Package did not include the Geotechnical Report. Please direct as to where, and how, the Geotechnical Report can be obtained.
2) Can the Cross-sections available be obtained by mail? If so please include the contact information.
3) Are the cores from the borings available for inspection?

7/12/08

7/14/08

7/16/08

 

 

 

 

 

 

 

7/23/08

Response: Your inquiry has been received and is being reviewed. Thank you for your patience.

1) An addenda may be issued to distribute said materials to the bidders.

1) The missing information will be sent out to bidders, without an addendum.

2) Paper hard copies of the cross-sections for contract 01-470214 are available.

Caltrans-North Region Construction (Districts 01, 02 and 03) currently has two print company vendors.

Bidders may contact either of them directly to make arrangements to obtain and pay for the cross-sections. The cost is controlled by the vendor and the number of sheets. Please contact one of the following vendors above to obtain the cross-sections.

Brownie' s in Sacramento at (916) 443-1322
Copy City in Marysville at (530) 743-8200

3) We are currently looking into this. A response will be posted as it becomes available.

3) Addendum #1, issued July 22, 2008 addresses this issue. Contact information is provided in the addendum for making arrangements to view the core samples for this project. The addendum may be found on the Caltrans website at the following address: http://www.dot.ca.gov/hq/esc/oe/project_ads_addenda/01/01-470214/pdf/01-470214ad1.pdf

Thank you for your patience.
8/4/08
 Inquiry: What is the limit for Item #67- Paint Timber Lagging? Does this item pertain to all sufaces of the timber lagging, or only the final exposed surfaces?
8/4/08
 Response: Your inquiry has been received and is being reviewed. Thank you for your patience.

Refer to Plan Sheet 49 of 60, "Tieback Wall at PM 41.5," Note 7: "First 12 pieces of lagging along length of wall to be painted with color as specified."
To clarify: From the top of wall, the first 12 pieces are counted from the top piece of lagging down, and from the beginning to the end of the wall, along the entire length of the wall.
8/4/08
 Inquiry: This question is in regards to Section 10-1.36 EROSION CONTROL (TYPE D) under the Application table on page 217. Commercial Fertilizer is to be applied at the rate of 2760 pounds per acre. What type of Commercial Fertilizer is specified? Is the application rate of 2760 pounds per acre correct?

8/4/08

8/6/08

 Response:Your inquiry has been received and is being reviewed. Thank you for your patience.

Please bid per the contract documents.
8/5/08
 Inquiry: 1. On Sheet No. 49, on the “Pile Section at Tieback” detail, and on “Detail A” a galvanized spike is shown going through a flange of the W 18x89 soldier beam into the wood lagging. Do you really want us to burn or drill a hole through the zinc coated beam every 12” vertically? There will be no way to zinc coat inside the burnt hole as described in section 10-1.52. If you do want a hole through the beam flange, there is no indication of the size of hole allowed. There are other ways of supporting the lagging without going through the beam flange with a nail. We do not recommend putting a hole through the beam flange in order to put a nail through the beam to the lagging.
2. We do not find the weld requirements between the tieback Bearing plate assemble (Bearing plate, Wedge plate, Closure plate) and the front flange of the steel soldier beam on the details on Sheet No’s 49 and 50. What weld is required to secure the Bearing plate assemble to the steel beam?
3. On sheet No. 49 “Detail A”, “Tieback Cover Block Section F-F” and “Tieback Cover Block Elevation” shows that the Anchor Studs appear to be installed on the front flange of the soldier beam in line with the soldier beam web, which is in conflict with the location of the Wedge plate of the tieback Bearing plate assemble which is also shown to be welded to the front flange of the soldier beam in line with the soldier beam web as shown on the “Pile Section at Tieback” detail. The Bearing plate will extend beyond the Wedge plate some distance, so the Anchor studs will need to be placed at least four (4) inches from the centerline of the soldier beam web. The last note in the list of “Notes:” indicated by “*” seems to address this issue, but the adjustment may be more than Cal Trans anticipates. Please clarify.
4. Please clarify that wood lagging is not intended to be installed in the seven (7) to eight (8) inch space between each beam of each fabricated soldier beam set. Details “Pile Section at Tieback”, “Detail A”, “Tieback Cover Block Elevation” on Sheet No. 49, and “Section X-X” on Sheet No. 51 show no wood lagging between the soldier beam sets. However, the “Tieback Cover Block Section F-F” on Sheet No. 49 which is cut through the center of the soldier beam show lagging in this space. In our experience lagging is never installed in this space, and we assume that the lagging shown on section F-F was meant to illustrate the lagging between soldier beams, not between the individual soldier beam sets. Would you please clarify?

8/5/08

8/6/08

 Response: Your inquiry has been received. However, please be aware due to the short time frame between when this inquiry was received and the bid opening, a response may not be provided in time. Thank you for your patience.

1) The spike is shown between the HP pile flange and 1/2" Premolded Expansion Joint Filler. The spike is not installed through a hole in the pile flange.

2) A fillet weld is shown on Sheet 50 of 60 on both sides of the closure plate between the HP pile flanges and the bearing plate.

3) Any conflict with the anchor studs depends upon the fabricator's choice of anchor plate size.

4) The plans do not call for the removal of Lean Concrete Backfill between the "individual soldier beam sets".

8/6/08
 Inquiry: I recently was submitted a request for a bid for the timber lagging for EA 470211 near Redcrest, CA. from a local contractor. I have looked over the plans as well as the spec sheets and would like clarification as to what the exact specs are for these members. Lengths, pressure treating requirements, ect. Any information would be greatly appreciated.

8/6/08

8/7/08

 Response: Your inquiry has been received and is being reviewed. Thank you for your patience.

Refer to Section 10-1.51 "Timber Lagging" of the Special Provisions and to the details shown on the plans. Bid per the current contract bid documents.

8/8/08
 Inquiry: Does the lean concrete backfill extend to top of pile or stop at approximate OG?

8/8/08

8/11/08

 Response: Your inquiry has been received. However, please be aware due to the short time frame between when this inquiry was received and the bid opening, a response may not be provided in time. Thank you for your patience.

Plan sheet 48 of 60, "Tieback Wall at PM 41.5," shows the limits of lean concrete backfill to the top of pile. Bid per the current contract bid documents.
8/11/08
 Inquiry: We have received 2 addenda for this proejct. The addendum information page on the Office Engineer's page shows 3 addenda. Addendum 3 on the website appears to be addendum 2 that was sent out. Addendum 2 on the website has no information associated with it. How should we ackowledge the addenda in the bid proposal, 2 addenda or 3 addenda?

8/11/08

8/12/08

Response: Your inquiry has been received. However, please be aware due to the short time frame between when this inquiry was received and the bid opening, a response may not be provided in time. Thank you for your patience.

The webpage has been corrected.
  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.