Viewing inquiries for 04-041004

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Inquiry #1: There may be an issue in achieving the required degree of surface preparation (SSPC SP-6) on the steel splice plates and bolts using shot blasting equipment alone.


If these conditions are encountered what additional surface preparation steps should be taken for the bolts and splice plates?

Inquiry submitted 07/07/2014

Response #1:Submitted for consideration.
Response posted 07/15/2014


Response #2:Bid per the current contract documents.
Response posted 07/17/2014




Inquiry #2: Per Lane Closure charts 3 and 4, we are allowed a total of 3 weekend closures to complete the Orthotropic steel deck section of the bridge. Are the noise restrictions in section 14-8.02A (page 25) of the specs, only referring to the Orthotropic portion of the bridge? If the noise restrictions are for the whole project, is it the State's intention that all unsound removal/patch, Treat Bridge Deck and Polyester placement to be completed during these three weekend closures?
Also, the noise restriction exceptions are from 10:00 pm to 5:00 am, while the restriction is from 9:00 pm to 6 am. What work is allowed between 9 to 10 pm and 5 to 6 am?

Inquiry submitted 07/15/2014

Response #1:Submitted for consideration.
Response posted 07/15/2014




Inquiry #3: Sheet E-1, "Notes", 11. and 15. are in conflict. Which note will be used?
Inquiry submitted 07/15/2014

Response #1:Submitted for consideration.
Response posted 07/15/2014


Response #2:Note 11 for the Armored Cable is correct.
Response posted 07/18/2014




Inquiry #4: I need to schedule a job site visit.

As per the Special provisions,
2-1.07 JOB SITE AND DOCUMENT EXAMINATION
Examine the job site and bid documents.
Bid submission is your acknowledgment that you have examined the job site and bid documents and are
satisfied with:
1. General and local conditions to be encountered
2. Character, quality, and scope of work to be performed
3. Quantities of materials to be furnished
4. Character, quality, and quantity of surface and subsurface materials or obstacles
5. Requirements of the contract

I need access to the catwalk (high rise section) and the EB side of the trestle.

Inquiry submitted 07/15/2014

Response #1:Submitted for consideration.
Response posted 07/15/2014


Response #2:A site tour is scheduled for July 24, 2014 at 10:00 A.M. at the Paint Yard, Pier 1 of the San Mateo Bridge (Foster City side). Visitors need to register. See the link below for more information.

LINK - www.dot.ca.gov/dist4/construction/contracts/04-041004/tour/tour.html
Response posted 07/18/2014




Inquiry #5: In reference Inquiry #1, it is important to use the proper sized Shotblasting equipment for this project. I recommend the Blastrac 2-4800DH, 48" ride on Shotblaster for this project. With the amount of horsepower and large quantity of abrasive which flows through the system, it is the most viable option for the steel deck prep to a SSPC SP-6. The machine should have no issue abrading the bolts either. The 2-4800 is the most productive Shotblaster on the market. With the fast pace of this project I strongly suggest bidders to use this machine, rather than the common 16" units.
Inquiry submitted 07/16/2014

Response #1:Submitted for consideration.
Response posted 07/16/2014




Inquiry #6: Section 86-2.19 - System Studies
Please provide the "As-Built" 1-line riser diagram for the 15kV System so we can determine the scope of work for the Short-Circuit & Coordination Study.

Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014


Response #2:The power distribution system uses overcurrent protection only for the incoming and the feeder circuit breakers. The directional overcurrent used on the line feeder has been changed to instantaneous only and therefore, the relay protection coordination should NOT be needed. A one-line diagram is shown on the plans, please elaborate on the "1-line riser diagram for the 15kV System" request.
Response posted 07/24/2014




Inquiry #7: Drawings E-48 through E-68 - shows installing new PLC backboards in each Substation. The drawings appear to be incomplete and thier are now specifications for components/devices to be used.
Is additional information forthcoming?

Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014


Response #2:The PLC backboards in each Substation are existing.
Response posted 07/23/2014




Inquiry #8: Drawing E-24 - indicates conduit replacement in the new barrier rail. General Notes 1 & 2 direct us to replace existing conductors - Please identify the existing cable size, quantity and type.
Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014


Response #2:All services which used to be at this side of the bridge barrier are transferred to the south side of the barrier of the bride.

All existing cables in the existing conduits are abandoned.
Therefore, the new conduits will be empty and are for future use.
Response posted 07/25/2014




Inquiry #9: What method should be used to extend "Existing" conductors to the new bucket locations in the new LVCC's:
1. Butt splices
2. Terminal strip in bottom of LVCC

Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014


Response #2:1) For the control conductors or cables it should be the Terminal strip in bottom of LVCC.

2) For the power conductors and cables it should be Butt Splices.

Response posted 07/23/2014




Inquiry #10: Drawing E-26 - Sheet Note #6 directs us to replace the Circuit Breaker. Please provide drawing for Emergency panelboard so we can determine breaker type & quantity.
Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014


Response #2:

The circuit for the battery charge is label in the panel, but circuit breaker needs to be sized per the NEC and should be based on the current of the nw battery charge.

Response posted 07/23/2014


Response #3:The circuit for the battery charger is labeled in the panel, the circuit breaker should be sized based on the current of the new battery charger per the NEC.
Response posted 07/24/2014




Inquiry #11: On Inquiry #7 - PLEASE MAKE THE FOLLOWING Correction - "there are NO specifications on the components/devices to be used".
Inquiry submitted 07/18/2014

Response #1:Submitted for consideration.
Response posted 07/18/2014




Inquiry #12: Substation 8
There is no single line diagram showing circuit breaker sizes and number of poles per circuit breaker.

Please provide a single line diagram for substation 8.

All the other substations have their single line diagrams.

Inquiry submitted 07/22/2014

Response #1:Submitted for consideration.
Response posted 07/22/2014




Inquiry #13: We respectfully request a postponement of the bid date by another 2 weeks due to the late schedule of the pre-bid site visit and the additional time needed to coordinated suppliers and subs.
Inquiry submitted 07/23/2014

Response #1:Submitted for consideration.
Response posted 07/23/2014




Inquiry #14: Sheet E-21, Detail Section DD

Hanger for 12KV cable. Is the hanger shown a UL listed product? If so, who makes it?


Inquiry submitted 07/24/2014

Response #1:Submitted for consideration.
Response posted 07/24/2014




Inquiry #15: As this project is fairly straight-forward in its work, and due to other bid obligations, it is hoped that this project is NOT delayed.
Inquiry submitted 07/24/2014

Response #1:
Submitted for consideration.
Response posted 07/28/2014




Inquiry #16: On Sheet E-23, the plan shows a SS mesh grip at every expansion joint. For the concrete trestle area, are the expansion joints every 30'?
Inquiry submitted 07/25/2014

Response #1:Submitted for consideration.
Response posted 07/25/2014




Inquiry #17: On Sheet E-1, Legend No 49 indicates the removal of the existing MV conductors in the concrete barriers. How many conductors are in the barriers which needs to be removed?
Inquiry submitted 07/25/2014

Response #1:Submitted for consideration.
Response posted 07/25/2014




Inquiry #18: Will the platform travelers under the steel girder span be used by the contractor? If so what is the maximum loading capacity of the travelers?
Inquiry submitted 07/28/2014

Response #1:
Submitted for consideration.
Response posted 07/28/2014






The information provided in the responses to bidder inquiries is not a waiver of Section 2-1.03, “Examination of Plans, Specifications, Contract, and Site of Work,” of the Standard Specifications or any other provision of the contract, nor to excuse the contractor from full compliance with the contract. Bidders are cautioned that subsequent responses or contract addenda may change a previous response.