BIDDER'S INQUIRIES & RESPONSES
DISTRICT 11 CONSTRUCTION

 
CONTRACT NO: 11-2T0934
ROUTE / KP 11-SD-15-M25.7/M31.0
LOCATION In San Diego County In San Diego From Mira Mesa Boulevard Undercrossing To 0.3 Kilometers South Of Route 56/15 Separation Overcrossing.
DESCRIPTION To Construct Managed Lanes South Segment
ESTIMATE $ 73,100,000
WORKING DAYS

720

ADVERTISE DATE 10/29/2007
BID OPENING 01/10/2008
FINAL POSTING
01/09/2008   @    15:50

BID RESULTS

The Caltrans District 11 Office is located at 4050 Taylor Street, San Diego, CA 92110. The District 11 Duty Senior telephone number is (619) 688-6635. Please submit all inquiries in the proper format by fax to (619) 688-6988 or e-mail to:
Duty_Senior_Const_District11@dot.ca.gov.
The responses to bidder' inquiries, unless incorporated into a formal addenda 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 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 bidder' 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.
Caltrans District 11 Construction Department has developed this method of answering Bidder's Inquiries to better serve the needs of the Contractors who bid on our Projects. Caltrans District 11 Construction Department will post all of the questions submitted by any of the contractors that are registered Planholders for that Contract, but reserves the right to not answer any questions deemed unsatisfactory for public viewing.
The BIDDER'S INQUIRIES & RESPONSES will be updated continuously and all attempts will be made to do the final posting by 15:00 on Wednesday prior to the bid opening.
INFORMATION AVAILABLE
 
CROSS SECTIONS
BID ITEMS
 SPECIALS
PLANS
 PLANHOLDERS
CROSS SECTIONS
Last Updated
11/28/07
INFORMATION HANDOUTS
Last Updated
12/12/07




ADDENDUM


ADDENDUM #2
Posted  12/20/07

 
 

BIDDER'S INQUIRY SUBMITTAL FORM


Inquiry No.
Inquiry
    1 

   Q:11/07/07
   R:11/20/07

Plan Sheet / Specification Reference= Special Provisions Section 5-1.15 Project Information

Question= Special Provisions Section 5-1.15 Project Information page 156, states that cross sections are available in electronic copy. When will the cross sections be available and in what format?

  • Cross sections are available as of 11/20/07 and can be downloaded for printing from the link above at any local printing firm or on your own printing equipment:

     MESA REPROGRAPHICS 
     5560 Ruffin Road Suite 5 
     San Diego, CA 92123 
     (858) 541-1500    FAX (858) 278-0558 
     e-mail to  plot@mesareprographics.com San Diego, CA 92123

     

    2 

   Q:11/20/07
   R:12/20/07

Plan Sheet / Specification Reference= 

Question= Section 3-1.01A refers to “Pre-Award Qualification Questionnaire” to be submitted by the apparent low bidder. Such form is not found within the bid package. Will such form be submitted after the bid?
Please clarify

  • Please refer to Addendum No. 2. 

    3 

   Q:11/20/07
   R:12/20/07

Plan Sheet / Specification Reference= 

Question= Section 2-1.03A refers to « Small Business Preference ». Section 3-1.01B “Award” does not specify the $ amount nor the percentage.
Please clarify.

  • Please refer to Addendum No. 2.
 
Update

11/28/07


  • As of 11/28/07, the updated pdf file of the cross sections for "SD15M" Line Sta. 313+94 to 319+40 is available for download from the link above.

    4

   Q:12/06/07
   R:12/20/07

Plan Sheet / Specification Reference= Sheet 729 of 839, Pile Data Table

Question= The pile data table on sheet 729 for the CIDH piles of the new Poway Rd. OC shows a significant difference on 4 of the piles between the "Design Tip Elevation" and the  "Specified Tip Elevation".  Please clarify which tip elevation is to be used for this bid item.

  • Please refer to Addendum No. 2.

    5 

   Q:12/18/07
   R:01/02/08

Plan Sheet / Specification Reference= Section 5-1.14 Payments of the Special Provisions

Question= Article B sets a linit of payment for Developing Water Item Code 170101 but there is no Bid Item for this.
Please Explain

  • Please see Section 10-1.35 "Watering", of the Special Provisions and Section 17 "Watering" of the Standard Specifications".
    6 

   Q:12/19/07
   R:12/21/07

Plan Sheet / Specification Reference= 

Question= On Sheet Nos. 791 & 792 of the project plans, the plans show's "SH's" of 3.965M (10'-0") & 4.575M (12') which are divided equally to (15) & (18) courses of .203M (8") CMU. The "SH" is shown being measured from the bottom of the 736A barrier to the top of the 10"x4"x12 masonry cap. The problem is that the "SH" needs to be adjusted for these two heights either .101M (4") lower or higher. Otherwise an 8"x4"x16" will have to be added to the all to make up the difference in height. No information about a 8"x4"x16" is shown on the plans or whether Caltrans wants it placed at the the bottom or top of the wall. Does the Caltrans want to proceed with the use of an 8"x4"x16" unit? Or do they want full height .203M (8") units throughout the wall, except for the cap block?

Also, on Sheet No. 808 of the project plans, the "SOUNDWALL REINFORCEMENT TABLE", shows to use high stress CMU for "H"s over 4.369M. Does this mean the entire CMU wall, over 4.369M, is to be high stressed block? Or only a few courses of CMU. Please advise.

  • The "SH" will be increased by 4" to make up the difference. All blocks should be 8" CMU.
  • The entire CMU wall over 4.369M needs to use high stress CMU blocks.
  • The bid opening date is 1/10/08 and there is no time to issue an addendum.  Bid per the current contract bid documents.

    7 

   Q:12/19/07
   R:12/20/07

Plan Sheet / Specification Reference= 116 Structural Concrete, Retaining Wall, Plan Sheet 480

Question= Per plan sheet 480 of the construction drawings there are two types of Retaining Walls required for RW 304L, Type1 and Type1 Mod. The Type 1 Mod requires Revised Standard Plans for B3-1, B0-3 and B3-8. There are no revisions for these sections within the plan set and/or on the CalTrans web site under the July 2004 Standard Plans. Please clarify which details are to be used for RW 304L, Type 1 Mod and where these revisions can be obtained.

  • The correct call out is Type 1, please delete "MOD".
    8 

   Q:12/19/07
   R:12/26/07

Plan Sheet / Specification Reference= Plan sheets 655-658

Question= Is it possible for the District to reissue these plan sheets (655-658) so that the details (bridge, retaining wall, concrete slab) are visible?  

  • The bid opening date is 1/10/08 and there is no time to issue an addendum.  No addtional plan sheets will be issued.  The quantities are correct and can be used for bidding purposes.  Bid per the current contract bid documents.

    9

   Q:12/19/07
   R:12/21/07
R:12/26/07

Plan Sheet / Specification Reference= Plan sheets 809 & 810

Question= On Sheets Nos. 809 & 810, the project plans show the aesthetic detail for masonry sound wall. Are all block, except the 254x101x406 precision cap block, split-one side or split-two side, does this include the pilaster as well?
Also, in the special provisions, on page 360, it calls out for single score unit, where in the aesthetic details is this shown?

In order to provide a competive bid for the project we  need this problem resolved.                                     

  • Sheet 809:  Soundwall Section B-B:  The 203x203x406 & 254x203x406 block shall be split face two-sides.  The 406x101x406 cap block shall be precision block.
    Sheet 809:  Pilaster Section A-A: The 406x203x406 pilaster block shall be split face two-sides.  The 406x101x406 pilaster cap block shall be split face two-sides.
    Sheet 810:  Soundwall Pilaster at Light Pole:  The 406x203x406 pilaster block shall be split face two-sides and one end.  The 406x101x406 pilaster cap block shall be split face two-sides and one-end.
  • The bid opening date is 1/10/08 and there is no time to issue an addendum.  Bid per the current contract bid documents.   

    10 

   Q:12/19/07
  R:12/26/07

Plan Sheet / Specification Reference= Bid item #66 - Rock Staining

Question= Plan sheet 432 of 839 calls for Rock Staining left the SD-15M Line from    Sta. 283+00 to 285+00.  Our takeoff of this area from the cross sections sheets shows approximately 5,000 m2, not the bid item quantity of 50,000 m2.  Are there additional areas of rock staining?  If so, we need to know so that we can evaluate the type of access to the work area.

  •  Bid per the current contract bid documents. 
           
    11 

   Q:12/21/07
   R:01/02/08

Plan Sheet / Specification Reference= Sheet 742 of 839

Question= For the (8) CIDH piles at the Poway Rd OC:
Will permanent CMP casing be allowed to extend from grade to the rock socket?

  • No. Bid per the current contract bid documents.
            
    12 

   Q:12/21/07
  R:01/02/08

Plan Sheet / Specification Reference= Sheet 742 of 839

Question= For the (8) CIDH Piles on the Poway Road OC:
Can the PVC inspection pipes be chaired to the inside of the CIDH pile to facilitate the placement of concrete in the pile?

  • Bid per the current contract bid documents.
               
    13 

   Q:12/21/07
  R:12/28/07

Plan Sheet / Specification Reference= Sheet 348 & 349; Traffic Control

Question= Please clarify the Traffic Control plans for stages 4C & 5A.  It appears as though there is no consideration of the traffic control required to install the (8) CIDH piles at the Poway Rd OC; specifically the (4) piles that make up Bent 3.
Please Clarify:
1.) Are there any lane closures for the I-15 planned; either for the SB, NB, or HOV?
2.)What is the maximum width of the planned work area for the installation of these piles?

  • Please see Traffic Closure Charts in Section 10-1.23 "Maintaining Traffic" of the Special Provisions and Stage Construction Sheets  SC-3, SC-65 and SC-66.

    14 

   Q:12/21/07
   R:12/26/07

Plan Sheet / Specification Reference= Bid Item 40 - Remove Retaining Wall (Portion)
Plan sheets X-1 => X-20, Q-2

Question= Bid Item 40 - (Remove Retaining Wall (Portion) has a pay quantity of 2200 M.  Portions of the walls are shown on the typical cross sections with a note which states, “Remove Retaining wall to 1 m below finish grade.   The contract documents do not contain any pertinent information regarding these walls such as the wall height (H) or bottom of footing elevations.   Without the information above, it is not feasible for the contractor to properly ascertain the actual quantity of retaining wall to be removed.  Please provide the above information or the walls as built drawings.

  •  Bid per the current contract bid documents.  
  • As-built drawings are available in the District Office. 
          
    15

   Q:12/26/07
  R:12/27/07

Plan Sheet / Specification Reference= Bid Item 43-Remove Pop-Up,Plan Sheet 104 of 839-- Specification Section 10-1.33 Remove Pop-Up Subsection on page 263

Question= Do the As Built Drawings mentioned in previous answers have plan sheets that provide more detail(dimensions,cross section etc)for the Pop-Ups so that an accurate estimate of cost and work can be completed for their removal?  

  • The contractors are advised to visit the Map Files department located at the District 11 office and view the as-built plans to determine which as-builts will be useful for their bidding purposes. 
 
   16

   Q:12/27/07
  R:12/27/07

Plan Sheet / Specification Reference= 

Question= Addendum 2 states that this project is a part of a pilot program for “Design Sequencing”.
In past Caltrans’s “ Design Sequencing “ projects, the Special Provisions specified the dates by which Caltrans was liable to deliver to the Contractor, the Completed Drawings that were not part of the bidding documents.
Without such information, it is difficult for the Bidders to adequately schedule the job. In absence of such information, the Bidders will be forced to assume that the Final Drawings will be made available to the Contractor when needed by the Contractor’s Schedule.
Please confirm our assumption or provide the bidders with the Final Drawings delivery schedule.

  • Please refer to "SECTION 1.01 SPECIFICATIONS AND PLANS" in the Special Provisions for Delivery dates.
             
   17

   Q:12/28/07
  R:12/28/07

Plan Sheet / Specification Reference= 

Question= Is it possible to extend the bid date based upon the current
Caltrans bid schedule and the holidays?

  • No change in the bid opening date is anticipated at this time.
          
   19

   Q:12/31/07
  R:01/02/08

Plan Sheet / Specification Reference= Plan sheets 817 and 822. Barrier Slab for retaining wall 301ML.

Question= Stage 4A drawing (sheet 343)
Question= Plan sheets 817 and 822 show the barrier slab for the soldier pile wall. The barrier slab is 3.6 m wide from the wall layout line.

Stage 4A drawing (sheet 343) shows a distance of 1.5 m to 2 m. from the wall layout line to the edge of the temporary K-Rail. Consequently, there would not be enough space to build the 3.6 m barrier slab.

Is it possible to close an additional lane of traffic to provide the space needed to build the barrier slab?

Please clarify

  • Please see Special Provisions Section 10-1.23 "MaintainingTraffic", Chart #20 Freeway/Expressway Lane Requirements.

 20

   Q:12/31/07
  R:01/02/08

Plan Sheet / Specification Reference=Special Provisions Section 10-1.16 Cooperation.

Question=The last paragraph of Section 10-1.16 states that Traffic Chart number 19 shall not be used until Contract numbers 11-080934 and 11-080944 are completed and opened to traffic.  When will these two projects be completed and opened to traffic?

  • Scheduled date of completion and opened to traffic  is 11/10/2008.  This date does not include potential weather delays. 
         
 21

Q:12
/31/07
R:01/02/08

Plan Sheet / Specification Reference=

Question= Are the core boxes from the exploratory drilling available for viewing and who is the contact person for scheduling an appointment?

  • Please refer to Section 5-1.15 "PROJECT INFORMATION" of the Special Provisions.

 22

   Q:01/02/08
   R:1/08/08

Plan Sheet / Specification Reference= Contract Plan Sheet # 580 Lighting and sign illumination plans

Question= As I mentioned over the telephone, as I progressed through the lighting & sign illumination plans the designers started leaving run numbers out of the deltas.  Moreover, they left off any other reference to run numbers.  Since they combine sign lighting, CMS, CCTV and F.O. on the same plans it is difficult to determine their intent. Also the four traffic signal plans are missing from the electrical drawings. Please advise.

  • Regarding  the Inquiry #22, the Lighting and Sign Illumination plans are preliminary plans. The final plans will be delivered to the contractor per Section 1.01 of the Special Provisions after the contract approval. Please see electrical special provisions under cost break-down from page 418 to 431. These pages shows the required quantities for bidding for the contract lump sum items for signal, lighting, and electrical systems.

 23

   Q:01/03/08
  R:01/08/08

Plan Sheet / Specification Reference= Item 80 - Steel Soldier Piling

Question= Is there a requirement to clean and paint the steel soldier piles?

  • No.  Bid per the current contract bid documents.

 24

   Q:01/03/08
   R:01/04/08

Plan Sheet / Specification Reference= BI 161 & 162 - CIDH (Sign Foundation)

Question= Is additional sign information forthcoming?  The summary tables are blank.

  • Please refer to the PAVEMENT DELINEATION section of the project plans for location of the signs and Section 10-1.01 "Specifications and Plans," of the Special Provisions (page 129) listing the Phase III Design Sequencing deliverables.
                         
 25

   Q:01/03/08
   R:01/04/08

Plan Sheet / Specification Reference= Item #107, Special Provisions Section 10-1.51 - Grind Existing Concrete Pavement.

Question= The special provisions section 10-1.51 state that this work shall consist of grinding existing PCCP as shown on the plans.  Where on the plans is the grinding of the existing PCCP shown?

  • Please see sheet Q-3 column "Seal Longitudinal Isolation Joint" for limits of grinding.
                         
 26

   Q:01/04/08
   R:01/08/08

Plan Sheet / Specification Reference= Bid item#63, plan sheet #839

Question=Can you please provide the roadway layout line and stationing for the location of the Bridge Removal (Portion), Location D.

  • Alignment line = "SBFLY" line, approximate Station = 314+50.

 27

   Q:01/07/08
  R:01/08/08

Plan Sheet / Specification Reference= Stage Const Plans SC1, SC19, SC20, SC26, SC32-SC34.

Question= These sheets indicate "Temporary Paving" in areas "cross hatched" per legend.  It doesn't appear these areas are included in the quantity sheets for asphalt & could not find thickness requirement of AC.  Please confirm that all asphalt placed as "Temporary Paving" for detour will be
paid for in Item 96 Asphalt Concrete (Type A) and provide thickness info for temporary paving.

  • Please refer to sheet 427 of 839, Roadway Quantities, Location, Detour. Additionally, the structural section is shown in the Typical Cross Sections on sheet X-1.

 28

   Q:01/07/08
  R:01/08/08

Plan Sheet / Specification Reference= Plan Sheet # 839, Bent Details for rebar cages of the CIDH Pile & Column.

Question= Current design spacing of #22 Hoops for CIDH Piles are @ 102mm. This tabulates to 4" O.C. spacing for the hoops (horizontal ties). Per the current Caltrans Bridge Design Details, this does not meet your minimum spacing of at least a 5" x 5" window for concrete flow.

Will the CIDH Pile cage be redesigned to meet current Caltrans design criteria?

If not, is Caltrans going to take FULL responsibilty for the GGL results when an annomaly appears from the restricted flow of concrete to the outisde of these rebar cages.

  • The bid opening date is 1/10/08 and there is no time to issue an addendum.  Bid per the current contract bid documents.

29

   Q:01/08/08
  R:01/09/08

Plan Sheet / Specification Reference= Various items and Standard Specification Section 2 as amended June 19,2003

Question= Ref page 19 of the Special Provisions, Section 2-1.03 first paragraph. Request your confirmation that bid items of work  affected by the Design  Sequence Method, which are patently ambiguous, incomplete and contradictory at time of the bid, cannot be ascertained as to charater, quality of work and scope of work.

  • Your input is noted.

 30

   Q:01/08/08
  R:01/09/08

Plan Sheet / Specification Reference=

Question= IS THIS A QC/QA JOB 

  • Please refer to 10-1.47  Asphalt Concrete for Quality Requirements for A.C.

 31

   Q:01/08/08
  R:01/09/08

Plan Sheet / Specification Reference= X1, L6 - L8, QUANTITY SHE

Question= Regarding your response to question 27 regarding detour paving. The X1 Typical indicates the detour as Typical Section # 9, 90 mm AC.  The only location Section 9 is indicated on the layout drawings is on sheets L6 - L8, on the outside of Ramp R 22 A.  The area indicated is approximately
equivalent to the quantity on sheet 427, 479 tonnes.  What about all the other areas indicated as "Temporary Paving" on the Staging/Traffic Handling plans?

  • Bid per the current contract bid documents.

 32

   Q:01/09/08
  R:01/09/08

Plan Sheet / Specification Reference= Special Provisions 10-1.45 Agg Base

Question= Section 10-1.45 states that base must comply with Section 26 of Standard Specifications which limits the amount of reclaimed material to 50%. Will the Contractor be permitted to use more than 50% reclaimed material?

  • Please see amended Standard Specification, Section 26, on page 40 in the Special Provisions.         
 33

   Q:01/09/08
  R:01/09/08

Plan Sheet / Specification Reference= Special Provisions 10-1.36 Earthwork Page 275 General Blasting Safety Plan, items R & S

Question= Which traffic chart should the Contractor use to close the freeway for blasting, resolve misfires or other phenomenon? If none of the existing charts apply, will the engineer please issue one for bidding.

  • Bid per the current contract bid documents.  


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