California Department of Transportation
 

Contract 06-0L6404

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.


Q1) SPEC. REFERENCE 10-1.40 CONTINUOUSLY REINFORCED CONCRETE PAVING. PAGE 136 SUBMITTALS SAYS "IF EPOXY-COATED STEEL IS USED" WHILE ON PAGE 140 MEASUREMENT AND PAYMENT MENTIONS EPOXY COATING OF STEEL REINFORCING. PLEASE CONFIRM IF EPOXY COATING OF THE CONTINUOUSLY REINFORCED CONCRETE PAVEMENT CRCP IS REQUIRED OR NOT.

A1) EPOXY COATING OF THE CONTINUOUSLY REINFORCED CONCRETE PAVEMENT CRCP IS NOT REQUIRED. 26Sep11.


Q2) SPEC REF. 10-1.41 CONTINUOUSLY REINFORCED CONCRETE PAVING (RAPID STTRENGTH CONCRETE) PAGE 140 SUBMITTALS SAYS IF EPOXY COATED STEEL IS USED IN CONTNUOUSLY REINFORCED CONCRETE PAYMENT RSC. WHILE PAGE 151 MEASUREMENT AND PAYMENT MENTIONS FULL COMPENSATION FOR EPOXY COATING OF STEEL REINFORCEMENT IS INCLUDED IN THE CONTRACT PRICE PAID PER CY FOR CONTINUOUSLY REINFORCED CONCRETE PAVEMENT (RSC). PLEASE CONFIRM IF EPOXY COATING OF THE CONTINUOUSLY REINFORCED CONCRETE PAVEMENT RSC IS REQUIRED OR NOT.

A2) EPOXY COATING OF THE CONTINUOUSLY REINFORCED CONCRETE PAVEMENT CRCP IS NOT REQUIRED. 26Sep11.


Q3) The quantity table on sheet 19 of the plans has quantities for the temporary rail for various stages and phases. Stage 3,4 has PM locations for Phases 1 thru 4 with lengths of temporary rail for these locations. Stage 5 has the same PM locations for phases 1 thru 4 and the same lengths for temporary rail as in stage 3,4. I am wondering why the quantities for stage 3,4 and stage 5, for the same phases, are the same? On plan sheet 14 for stage 3,4 shows one run of rail, while plan sheet 15 for stage 5 shows two runs of rail. It would seem that Stage 5 should be double the quantity of stage 3,4 and not the same as shown in the quantity table. This is for both south and north bound.

A3) Please refer to Addendum No. 1 dated October 12, 2011. 14Oct11.


Q4) Answer to Q1 and Q2 posted Sept 26 contradict with Bar Reinforcment on page 145 of contract specs. Please confirm the intent is to use uncoated rebar of grade 60-A706 or if it is uncoated, the reinforcement has to comply with ASTM A1035?

A4) According to Section 5-1.04 of the amended Standard Specifications, the Special Provisions shall govern over the Standard Specifications. Per page 145 of the Special Provisions, "If uncoated, bar reinforcement must comply with ASTM A1035/A 1035 M." 5Oct11.


Q5) In Sheet No. 57 of 93, Detail Section A-A shows the JPCP Lane with a HMA or JPCP shoulder. Please confirm that this detail applies to this project, where the lane is CRCP and the shoulder is JPCP and that there are no longitudinal tie bars in between the two.

A5) Sheet No. 57 of 93 is a Revised Standard Plan and is included in the project plans as applicable for this contract. Refer to the Typical Cross Sections (Sheet X-1 and 2) for confirmation that tie bars are not required at the joint between the CRCP lane and JPCP shoulder. 5Oct11.


Q6) Since there is a discrepancy on the rebar (whether epoxy coated or not coated, if uncoated if it is ASTM 615 grade 60 or ASTM A1035 grade 100) as per answers to Q1, Q2 and Q4. Is the district going to clarify it for all via addendum?

A6) There is no discrepancy. The bidder may bid using epoxy coated or uncoated. 7Oct11.


Q7) Reinforcing steel is not listed as a material that is eligible for payment as materials furnished but not incorporated in the work. The referenced Continuously-Reinforced Concrete Pavement items include considerable rebar quantities. Given the accelerated project schedule (A+B Bid), these materials will have to be procured early to (a) ensure meeting schedule obligations, and (b) avoid cost escalations. Please add reinforcing steel to the list of materials eligible for payment in this paragraph.

A7) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q8) Prior Bidder Inquiries 1, 2, 4 & 6 have addressed this issue. SP Section 10-1.40 (CRCP) does NOT have a separate "Materials - Bar Reinforcement" paragraph, whereas SP Section 10-1.41 (CRCP-RSC) does. Section 10-1.41 specifically requires that all bar reinforcement ("rebar") has to meet ASTM A 1035/A 1035M IF it is not epoxy-coated. As noted earlier, Section 10-1.40 does NOT have a separate rebar paragraph that addresses the material requirements for the rebar. It DOES have a section addressing TIE BAR requirements. The TIE BAR requirements in 10-1.40 are similar to the REBAR requirements in 10-1.41, in that they require that materials meet ASTM A 1035/A 1035M if they are not epoxy-coated. But NOWHERE in Section 10-1.40 are the requirements for the "non-tie bar" rebar addressed. Please provide clear specifications as to the rebar requirements. As written now, it appears that standard rebar materials may be used for the vast majority of bar reinforcing used in Bid Item Nos. 49-52, with only the tie bars requiring non-standard materials (ASTM A1035/A1035M).

A8) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q9) CRCP – Longitudinal Construction Joint Seal – Special Provisions Sections 10-1.40, CRCP, and 10-1.41 CRCP (RSC), Paragraph "Liquid Joint Sealant" state that “Liquid Joint Sealant for longitudinal contraction joint must be compression seal”. While we don't believe that there will be any longitudinal contraction joints, due to project staging requirements, please clarify this statement, as "compression seals" are not "liquid joint sealants".

A9) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q10) None of the concrete pavement-related Special Provision Sections (10-1.38, 10-1.40 & 10-1.41) address longitudinal construction joints. Revised Standard Plan RNSP P4, which addresses CRCP details, shows a detail for Longitudinal Construction Joints and refers to Note 4. Note 4 states “Joint seals at longitudinal construction joints shall conform to the details shown on RSP P20 for type C Joint." RSP P20 for type C shows a compression seal for longitudinal construction joints in CRCP. However Amended Standard Specification Section 40-3.09C, “Preformed Compression Seal,” states: “Do not install preformed compression seal in construction or isolation joints”. (a) Are joint seals required in longitudinal construction joints between CRCP and CRCP lanes, and if so, what type of joint and materials are required?; (b) Are joint seals required in longitudinal construction joints between CRCP and JPCP lanes, and if so, what type of joint and materials are required?

A10) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q11) The Plans do not show which joint(s) are to be longitudinal isolation joints. Are these to be placed between existing Lane #1 and new Lane #2, and/or between new CRCP Lane #3 and new JPCP outside shoulder?

A11) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q12) Can multiple stages or phases in the same direction of travel be constructed concurrently if the Construction Areas are five miles apart?

A12) Per 10-1.01 Order of Work in the Special Provisions; The work shall be performed in conformance with the stages of construction shown on the plans. Non conflicting work in subsequent stages may proceed concurrently with work in preceding stages, provided satisfactory progress is maintained in the preceding stages of construction. As specified in section 10-1.15, Maintaining Traffic, multiple lane closures are allowed in the same direction of travel. 27Oct11.


Q13) Please confirm whether or not a Railroad Protective Insurance Policy is required for this project.

A13) Railroad Protective Insurance is not required, but must comply with section 13-1.01 of the special provisions. 3Nov11.


Q14) Contract drawing C-3 (6 of 93) calls for a CRCP expansion joint Type WF. Per Revised Standard Plan P32A, this type of expansion joint calls for a wide flange beam and support slab in the same location that drawing C-3 (6 of 93) calls for a Pavement Anchor. Per the sections shown on drawing C-3, it appears that the more appropriate expansion joint would be to use Expansion Joint Type AN as shown on Revised Standard Plan P31B. If the contractor is to use an Expansion Joint Type AN, please revise the plans and Bid Item 52.

A14) Please bid according to Section 5-1.04 of the amended Standard Specifications that outlines that the Project plans shall govern over the Revised Standard Plans. 15Nov11.


Q15) Typical Cross Section Sheet X-1 calls out a longitudinal joint between lane No.2 and lane No.1. RSP P8 Type I indicates that the longitudinal joints between the individual slab replacement, which is lane No.1 and the adjacent lane, lane No.2, do not have any tie bars. However, RSP P18 Case 2 calls out tie bars between the new lane which is Lane No.2 and the existing lane, which is Lane No.1. Please confirm whether tie bars are required between CRCP Lane No.2 and existing Lane No.1.

A15) Do not place tie bars at the longitudinal joints between lane #1(slab replacement) and lane #2(CRCP). The two lanes must be isolated as shown in Detail A in RSP P18. 4Nov11.


Q16) Typical Cross Section Sheet X-1 indicates a longitudinal joint between lane No.3 and the shoulder. RSP P2 indicates that the longitudinal construction joint between the JPCP shoulder and the new lane do not have any tie bars. However RSP P18 Case 2 calls out deformed tie bars between the new concrete shoulder and the new concrete lane. Please confirm whether tie bars are required between the JPCP shoulder and CRCP Lane No.3.

A16) Do not place tie bars at the longitudinal joints between the JPCP shoulder and lane #3(CRCP). The two lanes must be isolated as shown in Detail A in RSP P18. 4Nov11.


Q17) Order of work states that loops must be placed before the last layer of paving. In some cases this is 1.1' of cover above the loops. Is this correct, or should the loops be cut into the concrete after the last layer?

A17) Please refer to Addendum #3 dated November 14, 2011. 17Nov11.


Q18) Addenda No. 1 revised this item to 665,000 lf. The bid schedule issued in addenda No. 3 reverted back to the original bid quantity of 498,000 lf. Which is the correct bid quantity?

A18) Please refer to Addendum #4 dated November 30, 2011. 1Dec11.


Q19) Why does the cement have a cap of 675 Lbs per yard of Type III on the pavemenrt RSC and the slab replacment RSC protion of work on this project. On all other RSC projects the cap was set at 800 lbs per yard of Type III cement.

A19) Submitted for consideration. 1Dec11.


Q20) Is there a drying shrinkage spec for the pavment RSC and the slab replacment RSC on this project if so what is the max value?

A20) Per section 90-1.01 Special Provision page 253 of 281. 5Dec11.


Q21) Is caltrans aware that by limiting the amount of Type III xcement to a max of 675 lbs per yard this will add time to the overall projects completion data and that lane closures may need to be longer for slab repalcment work. 675 lbs of type III cemet will at best meet 400 psi flex at 5 to 5.5 hours of age.

A21) Per section 90 There is no requirement for maximum cement content of 675 lbs/cuyd for individual slab replacement. 5Dec11.


Q22) As lane 2 and Lane 3 are removed completely, please confim this requirement pertains to Item 59, Individual Panel Replacemnet (Lane 1) only.

A22)Bid as specified in the special provisions under Remove Concrete Pavement. 2Dec11.


Q23)With regard to the End of Queue Warning Vehicle, will the contractor be required to provide the Changeable Message Sign Trucks (CMST) item to patrol for hours in which there is no work in progress when K-Rail is in place including weekends?

A23) Yes. 5Dec11.


Q24)Similarly, will the Service Patrol Vehicle be required to patrol by Caltrans for non-work hours when K-Rail is in place including weekends?

A24) Yes. 5Dec11.