BIDDER'S INQUIRIES & RESPONSES

CONTRACT NO: 11-244604

11-SD-5,8-R0.0/R116.5/T0.8/R125.2

In San Diego County At Various Locations On Route 5 from US-Mexican Border To The
End Of County And On Route 8 From Nimitz Boulevard To The Imperial County Line.

Install Sign Support System.

Advertise Date    02/26/01
Bids Open           04/05/01

FINAL POSTING

SEE QUESTION 14 FOR "MATERIALS INFORMATION"

DATE: 04/05/01

TIME: 11:15

Estimate $ 391,000.00


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.

The Caltrans District 11 Office is located at 2829 Juan Street, San Diego, CA 92110. The mailing address is P.O. Box 85406, San Diego, CA 92186-5406. 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.

BIDDER'S INQUIRY FORMAT


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. Only when stated in the Special Provisions will contracts have posted INQUIRIES AND RESPONSES.
The BIDDER'S INQUIRIES & RESPONSES will be updated continuously with the last posting no later than 15:00 on Wednesday prior to the bid opening.
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.

 

 ADDENDUM 1
03/22/01
ADDENDUM 2
03/26/01
 
 
Inquiry No.
Inquiry
Plan Sheet / Specification Reference= 

Does the contractor drill holes for new concrete footing?

  • Yes, drilling is an acceptable method.
2
Plan Sheet / Specification Reference= 

How deep is the hole or how much of the footing stays above ground?

  • As shown on Plan Sheet C-1 (2 of 10).
3
Plan Sheet / Specification Reference= 

Who welds the existing sign to the new support? 

  • The existing sign is not welded to the new support. 
 4
Plan Sheet / Specification Reference=#4, Sign Post Support System, Sheet S1 & S2 Sheet C2 & C3

We need the difference in the Sign sizes, between G84, G84A, W58, and SPCL.  So you can price the post lengths.

  • See Addendum 2.
Details do not make clear use of Sign Post Wedges C2 in any cross section detail and what is the placement of these metal sections?
  •  See Addendum 2.
Overall Dimension 1320 mm does not match component measurement total of 760 mm of steel form and drain pipe measurement of 457 mm. equals 1217 mm.  It is not clear where you want the gravel bags, are they placed at the bottom of the concrete cylinder and hole?
  • The overall dimension of 1320 mm should actually be 1209 mm + 15 mm crown (see side dimensions on C-1; sheet 2 of 10), and the drain pipe measurement of 457 mm did not include the 5 mm for the top plate which totals 462 mm. Therefore 1224 - 760 = 464 mm which leaves an additional 2 mm unaccounted for which is the allowable tolerance. 
 5
Plan Sheet / Specification Reference=Section 10-1.15 page 48

"Sign posts wedges shall be strong and impervious to weather."
Would douglas fir wedges satisfy the above requirement? If not, please provide example that would.

  • See Addendum 2.
 6
Plan Sheet / Specification Reference=Contract Working Days

The term of 40 days is too short.  It will take 40 days just to manufacture the concrete cylinders.  The contract working days should be increased to 90 days to accommodate submittal, inspection, manufacturing, and installation.

  • Bid it as stated in the Specials. 
Plan Sheet / Specification Reference=

Are the K-1 markers considered part of the State supplied sign panel materials noted on page 25 of the Special Provisions?

  • No, see addendum 2 with revision to Section 10-1.15 "SIGN POST SUPPORT SYSTEM" they are included in the item price.
 8
Plan Sheet / Specification Reference=Item 3: RESET ROADSIDE SIGN

When I purchase the plastic blocks for the wedge, am I able to use them as supplied by the distributor listed? 

  • No, the blocks are a standard size of 150 mm X 675 mm blocks. The blocks must then be cut to the dimensions and reasonable tolerances as shown for the two different sizes required on the CONSTRUCTION DETAIL C-2 (sheet 3 of 10). All work involved in shaping the blocks to the correct size as shown on the plans shall be included in the item price.
9
Plan Sheet / Specification Reference=ADDENDUM # 2

The addenda states that sign posts shall be reset in the dirt area. Will this be the location for all sign post support systems?

  • The location is dependent on the 7 M wide point between the two shoulders, if that point is not dirt then consider it a differing site condition. 
10
Plan Sheet / Specification Reference=ADDENDUM # 2

What is the method of payment for backfill and asphalt patching where existing sign posts are removed?

  • Backfill is included in the contract price, assume removal and replacement in dirt, anything different shall be considered a differing site condition.
11
Plan Sheet / Specification Reference=ADDENDUM # 2

Is concrete painted with lamp black an acceptable method for patching?

  • No.
12
Plan Sheet / Specification Reference=Sheet C-1 CONSTRUCTION DETAIL

The Plan Details appear to size the post cavity for 4"x4" wood post.
Most existing roadside signs are 6"x4" wood post.  Please provide detail for
actual posts.

  • Addendum # 2 shows the cavity as 4" X 6" therefor assume a standard dimension for all locations. 
13
Plan Sheet / Specification Reference= Addendum #2, Revised Special Provisions Section 10-1.15 and
Plan Sheet 3. 

The New 5th Paragraph, Part 1, defines the vinyl composite block as being "150MM x 675MM block. "The Plan Details shown on Sheet 3 call for a set of detailed, tapered wedges.  Is it the intent of your
specifications that the Contractor produce the detailed wedges from your vendors "block" of vinyl?

  • Yes, the contractor will be required to produce the wedges to the dimensions with reasonable tolerances allowed as show on C-2 CONSTRUCTION DETAIL (sheet 3 of 10). The distributor price is only for the standard size block 150 mm X 675 mm.
14
Plan Sheet / Specification Reference= Reference Revised Plan Sheet 2.

What is the purpose of "ferrule loop inserts?"   Please provide detail for welding to rebar hoops?

  • The ferrule loop inserts are for lifting the sign support system for placement at the designated locations. 
  • "MATERIALS INFORMATION" 
15
Plan Sheet / Specification Reference= Revised Plan Sheets 4, 5, 6 and Special Provisions Section 10-1.14.

 Your intent per Sect. 10-1.15 appears to call for a welded steel cavity form.  No welding requirements are shown on plans.

  • The steel cavity form does not have specific welding requirements it is used as a form and removed before for the support system. See "Materials Information". 
16
Plan Sheet / Specification Reference= Revised Plan Sheets 4, 5, 6 and Special Provisions Section 10-1.14.

Please confirm that a welded cavity form is required at each of the 221 Sign Support Structures of Bid Item 4.

  • No, it is not required for each support system.
17
Plan Sheet / Specification Reference= Revised Plan Sheets 4, 5, 6 and Special Provisions Section 10-1.14.

Please confirm that all 221 welded steel cavity forms are to be galvanized after fabrication per Section 75-1.02.

  • The forms should be galvanized per Section 75-1.02 but it is only necessary to make form 1- 221 forms per your manufacturing process.
18
Plan Sheet / Specification Reference= Special Provisions Section 10-1.15, Paragraphs re: gravel bag fabric and Revised Plan Sheet 2.

Clarify, as plans only call for "gravel fill."

  • The intent of the gravel "fill" bag is to separate any fines from the area. 
19
Plan Sheet / Specification Reference= Special Provisions Section 10-1.15, 1st Paragraph. 

At Contractors option, can the sign post support be cast-in-place?

  • No.
20
Plan Sheet / Specification Reference= Special Provisions Section 10-1.01 and Section 4.

The 40 work day project completion appears too short to allow for preparation, submittal, review, approval and implementation of the Lead Compliance Plan required by Section 10-1.01.  Request that working days be increased to reasonable time to comply with Section 10-1.01.

  • Bid it as stated in the Specials. 
21
Plan Sheet / Specification Reference=  Revised Plan Sheet 2. 

No Special Provisions have been provided for definition of reinforcing steel shown on Plan Sheet 2.

  • Bid it as you see it, any changes will be in accordance with Section 4-1.03.
22
Plan Sheet / Specification Reference=  Revised Plan Sheet 2. 

Addendum #2 defined unit price compensation to include most of the support system components, but does not define reinforcing steel.  Please clarify.

  • The reinforcing steel shall be included in the contract unit price for Item 4: SIGN SUPPORT SYSTEM.
23
Plan Sheet / Specification Reference=Revised Section 10-1.15, Addendum #2. 

The pricing table of unit prices is unclear if these are for an individual wedge or set of wedges or the "raw" 150MM x 675MM block.  Your designated vendor has not yet clarified this.  Please clarify.

  •  The contractor will be required to produce the wedges to the dimensions with reasonable tolerances allowed as show on C-2 CONSTRUCTION DETAIL (sheet 3 of 10). The distributor price is only for the standard size block 150 mm X 675 mm.

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