Caltrans Office Engineer

Viewing inquiries for 07-252614

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Inquiry #1: 1. Plan sheet 39 of 60 provides what appear to be fairly precise quantities for the PCP and PPCP patches. Is information available to bidders to determine the actual lengths and widths of the PCP and PPCP patches used to calculate the quantities? This is necessary to accurately estimate the fabrication and installation costs.
Inquiry submitted 10/18/2012

Response #1: For the Individual Slab Replacement (PCP), the actual slabs to be replaced will be determined in the field during construction according to the condition of the pavement at the time.
These in turn determined the lengths of the ISR (PCP) patches. The quantities are calculated based on the total numbers of slabs to be replaced in the segments. For the PPCP, all the slabs are replaced within the limits of the segments.
Response posted 10/19/2012




Inquiry #2: On Sheet 2 of 60, the cross sections for PM C44.34 - C44.45 and PM C43.90 - 44.34 seem to indicate that the PPCP decreases in thickness in the shoulder area. Is this correct? If so, what is the outer edge thickness? Can the shoulder be fabricated as separate slabs?
Inquiry submitted 10/18/2012

Response #1: Yes, the thickness of edge of the shoulder decreases. The outer edge thickness of the structural section varies from 1.43' to 1.75'. The shoulder can not be fabricated as separated slabs.
Response posted 10/19/2012




Inquiry #3: On Sheet 11 of 60, note 9 says to use 4 dowel bars where needed. What Note, Rule, Standard, or specification reference governs when they are needed?
Inquiry submitted 10/18/2012

Response #1: Page 97, first paragraph of the SSP book indicates that the use of 4 dowel bars will be required for all individual slab replacement (PCP).

Response posted 10/19/2012




Inquiry #4: Sheet # 1 shows multiple curves in the alignment of the truck lanes of this project. Will you provide the curve data for these curves so we can bid the trapezoidal panels responsibly?
Inquiry submitted 10/29/2012

Response #1:For the ISR (PCP), the existing four corner locations of the broken slabs will determine the shapes of the precast panels - whether they are rectangular or trapezoidal.
For the PPCP, survey might be needed to determine the trapezoidal panels.
The compensation for surveying are included in the price paid for PPCP and ISR (PCP).
Response posted 10/29/2012




Inquiry #5: The strands shown on Sheet No 16 are radial shown in a radial orientation. Must they be radial or may they be parallel?
Inquiry submitted 10/29/2012

Response #1:They must be radial for tight curves, as defined in the plans.

Response posted 10/29/2012




Inquiry #6: Sheet No 1 clearly indicates changes in superelevation throughout the project. Do you want us to bid flat panels for the entire project?
Inquiry submitted 10/29/2012

Response #1:Again, for the ISR (PCP), the existing four corner elevations of the broken slabs will determine whether the precast panels are flat or not.
For the PPCP, the panels in the superelevation sections could be non flat, and survey might be needed to determine the corner elevations.
The compensation for surveying are included in the price paid for PPCP and ISR (PCP).
Response posted 10/29/2012




Inquiry #7: With regard to your response to Inquiry #2: the outer edge thickness is reduced from 1.75' to 1.43' and reduction is all being taken out of the PPCP top surface. At the edge of the precast there won't be sufficent cover over the prestress strand. How are we to handle this?
Inquiry submitted 11/01/2012

Response #1:The thickness is enough. However, you might need to adjust the location of the ducts at the edge of the panel.

Response posted 11/02/2012






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.