CONTRACTOR'S INQUIRY RESPONSES

Dec. 12, 2000

CONTRACT NO. 04-004894

 

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. The mailing address is P.O. Box 23660, Oakland, CA 94623-0660. The Toll Bridge Program Duty Senior's email address for Contractor's inquiries is Duty_Senior_Tollbridge_District04@dot.ca.gov, the telephone number is (510) 286-5549and the fax number is (510) 286-4563. All inquiries must include the contract number.

 

1. Will there be any underwater work (diving) required for the fendering work under this contract?

The need for divers in the performance of item work will be determined by the individual contractors.

 

2. Paragraph 5-1.26 "Loads on Existing Structures" states first that "Anchoring to the bottom of the San Francisco Bay will not be permitted." Does this imply that the use of spuds (vertical column anchoring devices) from work barges will also not be permitted?

The use of Spud Anchors will not be permitted.

 

3. Paragraph 5-1.26 "Loads on Existing Structures" refers specifically to paragraph 5-1.28, "Navigation Requirements", in which we are required to submit our "... proposed method for anchoring barges" and also "... location of equipment, anchoring, buoys, ..." Are anchors and or spuds allowed to be used after such a submittal or was the prohibition against anchoring in 5-1.26 intended to be absolute?

The prohibition against anchoring to the bottom of the bay, referred to in 5-1.26, is absolute. Anchoring to the existing structure, with prior written approval of the Engineer, will be allowed.

 

4. Paragraph 5-1.26 also requires that "No lines for anchoring equipment shall be attached to the existing structure except with prior written approval of the Engineer." Does this imply that permission to attach lines to the existing structure will not be unreasonably witheld?

Yes, please see the response to Bidder's Inquiry Question #3.

 

5. Is this prohibition on anchoring to the bottom of San Francisco Bay to avoid damage to utilities? If so, are those utility locations known?

Yes, utilities are the primary concern. Precise utility locations are not available.

 

6. The specifications are unclear.  Is it the intent of the State to have the contractor provide all stainless steel 316 bolts, lags, and couplings (as called for in 10-1.16 at page 52 of the specials or is it the alternative in 10-1.17 at page 53 and in section 75 of the standard specifications which calls for A307 bolts, hot dipped galvanized.  This section calls for stainless 314 or 316 anchor rods. On the drawings, sheet 2, General notes you call for a malleable iron washers to be used. Typically, malleable iron is not used with 316 stainless hardware. I can understand the use of stainless anchor rods, but is it really the State's intent to use 316 SS for all the bolts and lags on the fender system? The cost difference is at least 5x that of hot-dipped galvanized called for in 10-1.17. Life cycle is similar; and the existing structure uses hot-dipped galvanized hardware.

Special Provision 10-1.16 calls for all hardware to be stainless steel anchor devices as shown on the plans. Plans do show though that most washers are "malleable iron washers". Where shown on the plans, provide malleable iron washers. This style is noted where the wider surface of this washer is needed for load distribution into the plastic lumber. All other hardware is to be stainless steel.

Special Provision 10-1.17 refers to Section 75, "Miscellaneous Metal" of Standard Specifications. This document states that "Unless otherwise specified all steel items and cast iron lightweight sidewalk frames and covers shall be galvanized in conformance with the provisions in Section 75-1.05, "Galvanizing."" As it is stated elsewhere that the hardware is stainless steel or malleable iron these requirements shall apply.

 

7. Please advise as to whether all hardware for the above referenced project is to be stainless steel. We feel that your plans and specs indicate that it should be. However, usage of stainless steel dramatically increases material costs and appears to be totally unnecessary in this instance.

Please refer to the response to Bidders Inquiry #6.