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Inquiry #1: Under Bid Item # 44 Individual Precast Slab Replacement, the drawings of the panels on pages C-26 & C-27 shows 4 dowels in each wheel path. The Typical Cross Sections on pages X-3, X-4, & X-5 appear to show that the lanes dont necessarily line up with the slabs. Q Does Cal Trans want dowels across the whole width of the panels or just the 8 shown on the detail drawings C-26 & C-27?
Inquiry submitted 05/05/2014

Response #1:Do not move the dowel bars to match wheel paths. Bid per plan.
Response posted 05/05/2014




Inquiry #2: Under Bid Item # 40 Precast Jointed Concrete Pavement. Sheet C-37 shows a keyway at longitudinal Construction Joint with a #4 bar extending from the panel into the keyway. The detail also does not show a radius bend from the panel into the keyway. Q What is the purpose of the bar in the keyway? Is it to tie the panel into the keyway concrete or to reinforce the keyway concrete?
Also, the plan shows that the keyway is to be filled with polyester concrete. The joint on top is 1/4"-3/8". The largest aggregate in polyester concrete is 3/8". Q Does Cal Trans anticipate a problem with filling this joint?

Inquiry submitted 05/05/2014

Response #1:The standard bend for a #4 bar must be used. The purpose of the bar is to reinforce the keyway polyester concrete backfill.
There are three aggregate gradations for polyester concrete, two of which have no 3/8” aggregate. Per Section 41-1.02C, contractor could also submit alternative gradation provided that 100 percent of gradation pass number 3/8” sieve.

Response posted 05/05/2014




Inquiry #3: Under 40-8.02A Materials (General) of the special provisions on page 239 & 240 the underslab bedding grout has a requirement for the grout to bond to the dry concrete. Q What is the purpose of the bonding of the grout to the concrete slabs? Does Cal Trans anticipate that the bond will be maintained over time?
Inquiry submitted 05/05/2014

Response #1:The purpose of the bond to the panel is to prevent a loose layer under the panel. The bond is expected to be long lasting.


Response posted 05/05/2014




Inquiry #4: Under bid item # 40 Precast Jointed Concrete Pavement. The drawing on pages C-31 & C-33 appear to show conventionally reinforced replacement panels and the drawings on pages C-32 & C-34 show pretentioned panels however the conventionally reinforced panels on C-31 & C-33 also reference pretensioning strand running through the panels. Q Is this correct or is this a cut & paste error?
Inquiry submitted 05/05/2014

Response #1:Conventionally reinforced panels require prestressing when they exceed 15’ dimensions. An alternative with prestress and minimal reinforcement is also provided. This alternative is intentional.


Response posted 05/05/2014




Inquiry #5: Under Bid Item # 40 Precast Jointed Concrete Pavement. If I calculate the stationing and the bid quantity it appears that the lane widths were figured at 24' however pages C-3 & C-4 of the drawings show a total width of 26.5' wide. Q What is the correct width and quantity?
Inquiry submitted 05/05/2014

Response #1:The correct width is 26.5’.
Response posted 05/05/2014




Inquiry #6: - What is the engineering justification for note #11 on sheet C-26 which requires pretensioned panels if T
Inquiry submitted 05/14/2014

Response #1:The note 11 requires the use of the prestress details when the slab is less than 8” thick. The minimum of 8” is required to accommodate the two mats and minimum cover of reinforcement. The prestress details which require less reinforcement can accommodate a panel less than 8” and maintain the minimum cover of reinforcement.
Response posted 05/14/2014




Inquiry #7: - Are we going to receive a more detailed layout of the Individual Precast Slab Replacement Panels than the table on sheet Q-3 prior to the bid date?
Inquiry submitted 05/14/2014

Response #1:No. The quantities of IPSRP will be based on Q-3 but IPSRPS’ location will be indicated on the field to the contractors before starting construction.
Response posted 05/14/2014




Inquiry #8: - What dimensions were used to calculate the quantities of the PJCP and the IPSR?
Inquiry submitted 05/14/2014

Response #1:PJCP: 26.5’ X LENGTH X 1.O’
IPSR: 12.0’ X 12.0’ X 0.7’ Per IPSR

Response posted 05/14/2014




Inquiry #9: - What dimensions are going to be used to caluculate the pay quantity of the IPSR and PJCP?
Inquiry submitted 05/14/2014

Response #1:PJCP: 26.5’ X LENGTH X 1.O’
IPSR: 12.0’ X 12.0’ X 0.7’ Per IPSR

Response posted 05/14/2014




Inquiry #10: - What are the design criteria used to arrive at the longitudinal construction joint detail?
Inquiry submitted 05/14/2014

Response #1:Does it refer to the dual keyway detail at the longitudinal joint? This dual keyway connection at the longitudinal joint is recommended by the SHRP 2, R05 research, and supported by HQ Office of Rigid Pavement.


Response posted 05/14/2014




Inquiry #11: Item 62- Install Sign Panel on Existing Frame

Most of the bridge mounted sign panels are surrounded by razor ribbon. The razor ribbon will have to be removed so the old sign panel can be removed and the new sign panel installed. Will the razor ribbon then be reinstalled? Please clarify how this work will be paid for and under which Item?

Inquiry submitted 05/15/2014

Response #1:Yes, razor ribbon needed to reinstall for graffiti protection and the work should be included in Install Sign Panel on Existing Frame.
Response posted 05/15/2014




Inquiry #12: Item 62 - Install Sign panel On Existing Frame

There is a conflict with mounting laminated panels on existing removable sign frames. Laminated panels require mounting beams. There is no item for supplying and installing mounting beams. Look at sheet 132, sign OS5-1 and OS5-2 as examples.

Inquiry submitted 05/15/2014

Response #1:Existing sign panels consist of both laminated and removable sign panels. However, we are replacing existing sign panel with the new sign panel of same type and size (laminate to laminate and removable sign panel to removable sign panel) per our record.
Response posted 05/15/2014




Inquiry #13: Lane closure charts show the number of through traffic lanes in the direction of travel which does not include the HOV lane. When closing the #1 (fast lane) can the HOV lane also be closed at the same time? Does the #1 lane closure along with the HOV lane closure equal one lane closure? Please clarify.
Inquiry submitted 05/15/2014

Response #1:A) YES (according to the special provisions on page 15: HOV lanes may be closed any time the adjacent freeway lane is allowed to be closed as shown on Charts no. 1 through 36.) B) The real issue is how many lanes do you have open. For example, if you have 4 lanes + HOV, and 3 lanes are required according to the chart, you cannot use the HOV as one of the lanes, unless otherwise specified.




Response posted 05/15/2014




Inquiry #14: Under bid items 40 & 44 Precast Jointed Concrete Pavement & Individual Precast Slab Replacement the special provisions on page 240 under section 40-8.03B Furnishing PJCP refer to section 40-1.03M of the Standard Specifications and require after casting and before curing of the panels to be machine ground groved. This is a specification for cast in place paving that is done after the concrete is cured and hard enough to accept a maching ground finish. Q Is this the intention and if so how can a maching designed for grinding hardened concrete going to grind fresh uncured concrete? Q-2 Can this portion of the specification be waived if contractors are going to provide a final grinding after the panels are installed?
Inquiry submitted 05/20/2014

Response #1:A) The intent is to comply with the surface texture in this section. As mentioned in this section, hand method is acceptable if “areas inaccessible to the grooving machine”. Whether using machine or hand, the texturing needs to be done at the right time. B) No, unless grinding is done right after installation. The installed panels must provide appropriate friction between the time of installation and the time of grinding.
Response posted 05/20/2014




Inquiry #15: Sheet C-28 illustrates an open slot dowel bar connection backfilled with polyester concrete. Q. Can the "Barra Glide" load transfer system be used in lieu of this type of this system?
Inquiry submitted 05/27/2014

Response #1:Yes. The contractor may propose these hardware strategies as a substitute for those shown on the plans.


Response posted 05/27/2014




Inquiry #16: Q. Can the "Gracie Leveling lift" be used as a means to adjust the precast slab surface to match that of the adjacent and existing concrete surface?
Inquiry submitted 05/27/2014

Response #1:Yes. The contractor may propose these hardware strategies as a substitute for those shown on the plans.


Response posted 05/27/2014




Inquiry #17: What is the engineering justification for note #11 on sheet C-26 which requires pretensioned panels if T is less than 8". Why can't these panels be precast?
Inquiry submitted 05/29/2014

Response #1:The note 11 requires the use of the prestress details when the slab is less than 8” thick. The minimum of 8” is required to accommodate the two mats and minimum cover of reinforcement. The prestress details which require less reinforcement can accommodate a panel less than 8” and maintain the minimum cover of reinforcement.
Response posted 05/29/2014




Inquiry #18: Details on item 90 & 91 are not shown in the electrical plans. Are there details on these items somewhere else on the plans?
Inquiry submitted 05/29/2014

Response #1:Details for item 90 and 91 are in the Electrical sheets added on Addendum #4.
Response posted 05/29/2014




Inquiry #19: Per Addendum #1, Item #70 - Transition Railing (Type WB-31) was deleted, is this correct? Where will this items be paid for?
Inquiry submitted 05/29/2014

Response #1:No, deleted by mistake. Addendum 2 was corrected.
Response posted 05/29/2014




Inquiry #20: Caltrans response to enquiries 8 & 9 regarding dimensions and pay quantity for IPSR on the basis of 12’ x 12’ x 0.7’ throws all quantities out of match with quantities shown on sheet Q3. Also the typical cross sections on sheets X-3, X-4 and X-5 indicate that panel thickness in slabs (lanes) 1 and 2 is 0.62’, not 0.7’. Please verify and clarify. Thank you.
Inquiry submitted 06/03/2014

Response #1:There are 2 sections for IPSR. Section 1 for slab 1 and 2 is 12'X 12' X 0.62' and section 2 for slab 3, 4, 5 and 6 is 12'X 12' X 0.7" (per plans).
Response posted 06/03/2014




Inquiry #21: On sheet C-30 and other sheets we are asked to refer to sheet RSP P3B for notes on the panel joints. Sheet RSP P3B is not included in the plans. Will you be issuing a sheet RSP P3B?
Inquiry submitted 06/03/2014

Response #1:Yes, RSP P3B will be provided.
Response posted 06/03/2014




Inquiry #22: Bid Item #40 - Precast Jointed Concrete Pavement" - are the removals of the existing to be included in the unit price or will they be paid for in Item #21?
Inquiry submitted 06/03/2014

Response #1:The removals are not included in the unit price of PJCP.
Existing pavement removal will be paid in item #21.

Response posted 06/03/2014




Inquiry #23: Response to inquiry #20 did not address the issue of pay quantity for IPSR. With the dimensions stated of 12' x 12', and with the thicknesses which are clear on the cross sections on sheets X-3, X-4 and X-5, the quantity of concrete does not match those shown on sheet Q3 for any location. Can CT please advise how quantities were arrived at on sheet Q3?
Inquiry submitted 06/03/2014

Response #1:Based on the notice 3 on Sheet C-30 (6’ Min dimension of existing pavement slabs must remain), therefore the quantities were increased 25% to cover the notice 3.


Response posted 06/03/2014




Inquiry #24: In your answer to Inquiry #17 you state that "The minimum of 8” is required to accommodate the two mats and minimum cover of reinforcement." What standard are you referring to? What is the minimum cover?
Inquiry submitted 06/03/2014

Response #1:If you examine the construction details, you will see that the section drawings clearly show 2" cover over the reinforcement.


Response posted 06/03/2014


Response #2:
Response posted 06/03/2014




Inquiry #25: Your answer to inquires 8,9 and 20 do not match up to cubic yard quantities per panel on sheet Q-3. It appears that the slab sized used to calculate the yardage is 12'x15'x0.7'. So are the slabs 12'x12' or 12'x15'?
Inquiry submitted 06/03/2014

Response #1:The slab sized to calculate the quantities is 12’ x 12’ x 0.7’.
Based on the notice 3 on Sheet C-30 (6’ Min dimension of existing pavement slabs must remain), therefore the quantities were increased 25% to cover the notice 3. If the existing pavement slab is less than 6’, it has to be removed and replace with another 12x12 slab.


Response posted 06/03/2014




Inquiry #26: For Bid items # 40 & 44 are the dowels supposed to be included in the precast price or are they part of pay item #42?
Inquiry submitted 06/11/2014

Response #1:Dowel bar will be paid on item #42.


Response posted 06/11/2014




Inquiry #27: The revised Standard Plan RSP P3B has been added in Addendum 4. Can you tell me what the intention is for the slot between the existing pavement and the JPCP? Is this a separate panel to tie in the precast to existing pavement? Is this a precast panel or RSC tie in? When would an Isolated joint be used vs a Tied joint?
Inquiry submitted 06/23/2014

Response #1:There is a longitudinal construction joint between the existing PCC pavement and new JPCP. If the existing pavement is in good condition, AND the transverse joints will be the same spacing as the new JPCP, then the new JPCP should be tied to the existing PCC. IF the existing pavement has several transverse cracks OR the transverse joints are a different spacing than the new JPCP, then the new JPCP must be isolated from the existing PCC.

This detail is to allow the new JPCP to lap into the existing pavement up to 3’-3”, but when the lap exceeds 3’-3” it must have tie bars at the lane line and a longitudinal joint. It is not a separate pour nor a precast section. It is poured at the same time as the JPCP.

Response posted 06/23/2014




Inquiry #28: The revised Standard Plan RSP P3B has been added in Addendum 4. Can you tell me what the intention is for the slot between the existing pavement and the JPCP? Is this a separate panel to tie in the precast to existing pavement? Is this a precast panel or RSC tie in? When would an Isolated joint be used vs a Tied joint?
Inquiry submitted 06/23/2014

Response #1:There is a longitudinal construction joint between the existing PCC pavement and new JPCP. If the existing pavement is in good condition, AND the transverse joints will be the same spacing as the new JPCP, then the new JPCP should be tied to the existing PCC. IF the existing pavement has several transverse cracks OR the transverse joints are a different spacing than the new JPCP, then the new JPCP must be isolated from the existing PCC.

This detail is to allow the new JPCP to lap into the existing pavement up to 3’-3”, but when the lap exceeds 3’-3” it must have tie bars at the lane line and a longitudinal joint. It is not a separate pour nor a precast section. It is poured at the same time as the JPCP.

Response posted 06/23/2014






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.