Questions and Answers to Project Documents — Business Opportunities
PROJECT:  Pikes Peak Parking Restoration
NUMBER:  201845783-00

Current as of:  12/18/2018
 
Question Number  1:   Is there any kind of cost estimate/budget available and if there is a date set yet for work on the project to begin.
    Answer:   There is no cost estimate available for the contractors use. The assumed start date of the project is April 2019, and is based solely on the DEN procurement process meeting its review and signing requirement schedule.
Question Number  2:   I would like to discuss the prequalification with someone on the prequal board. Who should I contact?
    Answer:   For questions regarding prequalification, please contact the Prequalification Section as noted below: Each Bidder must be pre-qualified in the category of 1A General Civil or 1F(2) Concrete at the $18,000,000.00 monetary level, in accordance with the City's Rules and Regulations Governing Prequalification of Contractors. Each bidder must have submitted a prequalification application a minimum of ten (10) calendar days prior to the bid opening date. Applications must be submitted to the Department of Public Works, Prequalification Section, 201 West Colfax Avenue, Department 614, Denver, Colorado 80202. To view the Rules and Regulations and to obtain a prequalification application, please visit our website at https://www.denvergov.org/prequalification or call 720-865-2539 for prequalification information ONLY.
Question Number  3:   "Plans, General Notes, Sheet 4, Item 7 states “THE CONTRACTOR SHALL SUBMIT A JOINTING PLAN TO THE DEN PROJECT MANAGER FOR REVIEW 14 CALENDAR DAYS BEFORE BEGINNING PAVING OPERATIONS.” Plans, Standards Plans List, Sheet 3 refers to CDOT M-412-1: Concrete Pavement Joints (5 Sheets) as a guide for joint layout but Note 1 on Sheet 1 of 5 of M-412-1 states “This standard plan does not apply to thin concrete overlays (Whitetopping).” M-412 can be followed for Joint Layout of the Bus Lanes, but not for the Concrete Overlay area. CDOT has available on their website D-412-2 Thin Whitetopping Typical Joint Layout and recommends a 6-foot by 6-foot joint pattern. Can a joint spacing be provided for the whitetopping by DEN, or should contractors bid the CDOT typical joint layout of 6-foot by 6-foot? "
    Answer:   The M-412-1 Standards shall be followed for the 10 inch bus lane using 1.25 inch dowel bars and No. 5 Tie Bars. The 5-inch thin white topping shall use the 6-foot by 6-foot pattern. Contractor shall follow the CDOT typical joint layout of 6-foot by 6-foot to comply with the requirements on this project. For White topping joint and rebar details See D-412-2 included in plan set (Addendum 002)
Question Number  4:   Plans, General Notes, Sheet 4, Item 8 calls out No. 4 Epoxy Coated Tie Bars to be used in the 5” Concrete Pavement. Sheets 66 and 133 both show a detail for Whitetopping Pressure Relief Joint and call out No. 5 Tie Bars. CDOT Thin Whitetopping D-412-2 calls out No. 4 Epoxy Coated Tie Bars. Please confirm that No. 4 Epoxy Coated Tie Bars are to be used in the 5” Concrete Pavement for joints requiring tie bars.
    Answer:   The detail on Sheets 66 and 133 should show No. 4 epoxy coated tie bars in the 5 inch concrete pavement.
Question Number  5:   IB-30 & SC-16 Insurance Requirements – CCD Insurance Certificate: insurance requirements page(s) missing from the Project Manual
    Answer:   The insurance requirements will be provided in an addendum. To access the Safety Message, please utilize the following link: http://business.flydenver.com/bizops/bizRequirements.asp
Question Number  6:   IB-31 Invoicing – Textura fee shall be included as a line item in the Contractor’s bid with no markup: line item is missing on the Schedule of Prices & Quantities
    Answer:   The Textura Fee will be reimbursed to the contractor via Change Order after the contract is executed.
Question Number  7:   Project Manual, Schedule of Prices and Quantities. There are many items listed, particularly in the Alternate Bid Schedule, that have no quantity listed. How are we to bid items with no quantity, can a revised bid schedule be provided with these items removed?
    Answer:   Alternative Bid Tabs shall be revised to only show item with a quantity and re-submitted in Addendum 002
Question Number  8:   Project Manual, Page 3, “Checklist: Required Submittal Forms” lists several forms to be submitted, all of which are provided in the Project Manual except for “Certificate of Buy American Compliance for Total Facility” and “Certificate of Buy American Compliance for Manufactured Products”. Are these forms required? If so, please provide the required Forms.
    Answer:   This project is not federally funded, therefore, they are not required to be submitted. This will be acknowledged in an addendum.
Question Number  9:   The provisions of this project allow all contractors prequalified under General Civil Construction up to $18 million to bid, however, the self-performance requirement would not allow this. Would DEN be willing the reduce the self-performance percentage to allow for more competitive bidding? Right now the project is set up such that only a select few contractors will meet both the prequalification and self-performance criteria.
    Answer:   The Self Performance percentage has been changed form 35% to 65% IN Addendum 001.
Question Number  10:   Can Aggregate Base Course required for the contract be provided at the South Recycle Yard? Additionally, it is unclear as to whether or not crushing will be required to obtain Riprap (Special). Could you please clarify whether or not contractor crushing will be required for recycled concrete materials?
    Answer:   "Aggregate Base Course can be produced by the contractor using the concrete materials in the DEN South Recycle Yard. Crushing will be required to produce Riprap (Special). "
Question Number  11:   What is the joint spacing for the 5” concrete overlay? Longitudinal and transverse. The detail shown in general notes 8 and 9 would indicate this to be 7’-6”. Please verify.
    Answer:   "The 5-inch thin white topping shall use the 6-foot by 6-foot pattern. Contractors shall follow the CDOT typical joint layout of 6-foot by 6-foot to comply with the requirements on this project. For White topping joint and rebar details See D-412-2 included in plan set (Addendum 002) "
Question Number  12:   Please verify the size of the tie bars in the longitudinal joints.  The detail shows #5 tie bars and the General Notes specify #4 tie bars.
    Answer:   The 10-inch bus lane concrete requires No. 5 tie bars in the longitudinal joints, and the 5-inch concrete overlay requires No. 4 tie bars in the longitudinal joints.
Question Number  13:   Typical sections do not show details of the joint between the 12” PCCP and the 5” concrete overlay. Will this joint be a “Whitetopping Pressure Relief Joint” or will it be tied with tiebars.
    Answer:   The longitudinal joint between the bus lane and the 5-inch concrete overlay is a construction joint, with no tie bars.
Question Number  14:   "Base Bid – HMA (Grading SX)(75)(PG 58-28) 8,902 TN Alternate Bid – HMA (Grading SX)(75)(PG 58-28) 798 TN If the Base Bid and Alternate are both awarded, the full Base Bid HMA quantity of 8.902 TN will not be required, and only 798 TN will be required. It seems that the quantity in the Alternate Bid should be the difference, -8,104 TN, to account for the deduction in quantity, since the asphalt taper should not be required."
    Answer:   Refer to the bullet note below the SOAQ table on sheet 9.
Question Number  15:   Where are the requirements detailing the required time to clear the parking lot/work zone (the “clearing period”) for each phase of work as described during the Prebid Meeting.
    Answer:   Refer to sheet 119, Note 6.
Question Number  16:   Subsection 412.10 includes requirements for Surface Cleaning of the existing asphalt mat which includes using a mechanical broom and then pressure cleaning with air or water. Our understanding is that this is a non-bonded overlay design, is this level of cleaning required for the design? Are contractors to establish separate work crews to pressure clean the 273,390 SY of asphalt?
    Answer:   The surface of the parking area is to be cleaned as approved by the project engineer as per the project specifications.
Question Number  17:   Division 2, Revision of Section 412 Portland Cement Concrete Pavement Overlay, (c) Patching and Crack Filling. An estimated quantity of HMA Patching (400 Tons) has been provided in the documents as well as pay items in the base bid and alternate bid for this. 412.24 (a) includes the following statement “The price per square yard of Concrete Pavement shall be full compensation for furnishing and placing all materials, including but not limited to any HMA patching…” Please confirm that HMA Patching is not to be included in the PCC 5 Inch items, but in the 403-00720 Hot Mix Asphalt (Patching) (Asphalt) items provided on the bid schedule?
    Answer:   This will be addressed in  Addendum 002.
Question Number  18:   Division 2, Revision of Section 412 Portland Cement Concrete Pavement Overlay, (c) Patching and Crack Filling. Existing cracks in the existing HMA wider than ¼ inch shall be filled with a fine asphalt mix or crusher fines. This cost is to be included in the PCC 5 Inch items. Preliminary inspection of the parking lot shows many areas with cracking, but it is not possible for contractors to inspect the lot with the vehicles currently parked prior to bid time to determine a quantity to include in this item. Will DEN provide pay items (Base and Alternate Bid) and quantity for all bidders to establish a unit price?
    Answer:   This will be addressed in  Addendum 002.
Question Number  19:   During the Pre-Bid it was stated that the foundation for the 70’ Hi Mast Caisson would be issued via addendum. Please provide.
    Answer:   This will be addressed in  Addendum 002.
Question Number  20:   Project Manual, IB-24, Meeting Established Goal, 2., says that each bidder shall use the Bid Form entitled “List of Proposed MWBE bidders, etc.” The List of Proposed M/WBE Subcontractors is not included in the bid documents. If this form is required, please provide.
    Answer:   This will be addressed in  Addendum 002.
Question Number  21:   Plans, Sheet 30, Pothole Location Map shows Pavement Boring locations by Rocksol and by Yeh and Associates. Please provide these documents so that contractor can view existing asphalt thicknesses while considering cross slope and grade corrections via milling.
    Answer:   This will be addressed in  Addendum 002.
Question Number  22:   Plans, Summary of Approximate Quantities, Item 202-00039, Removal Of Bollard has a quantity of 13 EA. Where will the remaining Bollards being removed be paid under?
    Answer:   Paid under Item 202-00810 Removal of Ground Sign
Question Number  23:   Can cure removal for pavement marking be done by grinding or will water blasting be required?
    Answer:   See CDOT Specification 627.05 for requirements.
Question Number  24:   Revision of Section 622 – Shelter – is there a DEN preferred manufacturer for the bus shelters that will meet the design?
    Answer:   DEN does not have a preferred manufacturer
Question Number  25:   Removal of existing bollards will create a hole larger than what is needed to reinstall bollards in the same location. Is the contractor to include whatever costs are needed to ensure a suitable platform is provided for 5” whitetopping?
    Answer:   The contractor shall assume all costs necessary to provide stable foundation for the 5-inch whiter topping.
Question Number  26:   Will the person/s manning gates logging in and out trucks be paid for under the Item “Flagger” or are they incidental?
    Answer:   See General Note #33, sheet 4.
Question Number  27:   Is there a Joint Detail for the 5” Concrete Pavement? A Longitudinal Construction Joint is required at Approx. 60 Foot Intervals. Is that a minimum or only a maximum?
    Answer:   The 60-foot interval is a maximum.
Question Number  28:   Is the use of a Slip Form Paver Required for the 5” Concrete Pavement?
    Answer:   Not required
Question Number  29:   Is there a smoothness specification requirement for the 10” and 5” Concrete Pavement?
    Answer:   This will be addressed in  Addendum 002.
Question Number  30:   The Bid Letter states that the existing HMA Parking surface will be milled, there is no pay quantity for this item in the Alternate Bid Items? Should this be Removal of Asphalt Mat (Planing)?
    Answer:   For milling limits, Bid plans and specifications.
Question Number  31:   On sheet #4 “General Notes” item 33 states that labor hours for gate management to allow for access and egress of construction vehicles in the PAY-FOR-PARKING areas shall be included in item 630-00012.  I don’t see an item 630-00012 on the bid form, what item should we include these cost for? 
    Answer:   This will be addressed in  Addendum 002.
Question Number  32:   According the phasing plans, the contractor is required to place an asphalt taper adjacent to the new concrete in the Base Bid Package and then also include cost for removing the asphalt taper in the Alternate Bid Package.  If the Alternate Bid Package is accepted would there still be a need for this asphalt taper and the associated bid items for the alternate bid package? 
    Answer:   Asphalt quantities have been adjusted in the alternate bid to eliminate the quantity for the taper, Refer to the bullet note below the SOAQ table on sheet 9.