Questions and Answers to Project Documents — Business Opportunities
PROJECT:  Runway 7-25 Complex Lighting Pavement Rehabilitation
NUMBER:  201737338-00

Current as of:  2/25/2018
 
Question Number  1:   Is this bidding on 21st of December at 1 PM?
    Answer:   Yes, The Bid Opening Date is December 21, 2017 at 1:00 P.M.
Question Number  2:   Is the Pre-Bid Meeting Still Scheduled on the 5th of December at 2:00 PM?
    Answer:   Yes, The Pre-Bid date is December 5, 2017 at 2:00 P.M.
Question Number  3:   How much is the Construction Estimate>
    Answer:   We usually do not disclose the construction estimate.
Question Number  4:   Can we get a complimentary set of Bid Documents?
    Answer:   They can be downloaded from the project web page at www.business.flydenver.com at no cost.
Question Number  5:   Is there required Plan Deposits? Is it refundable?
    Answer:   No.
Question Number  6:   Have you issued any addenda for this project?
    Answer:   Please see the www.business.flydenver.com website daily for any addenda issued. You will be able to retrieve copies from this website.
Question Number  7:   I would like to ask a copy of the bidders list?
    Answer:   It can be downloaded from the project web page at www.business.flydenver.com.
Question Number  8:   Who is the Designer (Architect or Engineer) for this project?
    Answer:   Jviation, Inc.
Question Number  9:   Do you have Union Requirements?
    Answer:   The contract documents contain the project requirements.
Question Number  10:   Do they plan to do an actual site visit/walk around of the runway following the pre bid conference or is this just a meeting in a conference room?
    Answer:   No site visit is scheduled after the Pre-Bid Meeting. However, individual site visits can be arranged with the Project Manager.
Question Number  11:   Request for Clarification, Runway 7-25 Complex Lighting and Pavement Rehabilitation, 201737338 1. Signs #s 19503 and 19507 -- The signs are listed as 3 modules; legends only require 2 modules. 2. Signs #s 19502 and 19504 -- The signs are listed as 2 modules; legends will require 3 modules. 3. Sign #19519A -- The sign is listed as 3 modules; legend will require 4 modules. 4. Specifications require switches for each sign but no cover. Given the winter conditions might the airport also prefer a cover? 5. Bid Schedule 1 bid item L-858f; Sign Schedule shows 21 signs require new foundations. 6. In addition: Sign #19506 (RDR) shows new foundation on plansheet EL105 but it is not shown on the sign schedule (plansheet EL603).
    Answer:   'Refer to Addendum #2 for modified specifications, configuration of signs, and bid item quantities.
Question Number  12:   The plans and specifications for the LED Airfield Guidance Signs (L-858) appear to be to written around one specific manufacturer. As written, they exclude all other certified sign manufacturers, including the airport's current standard/preference for L-858 Airfield Guidance Signs. Our understanding is that this is an AIP project that is federally funded and, therefore, is required to be open and competitive. Please confirm that current FAA certified sign manufacturers are acceptable.
    Answer:   Sign specification has been modified, Refer to Addendum #2.
Question Number  13:   On the sign schedule provided, the signs are listed as being Style 3. However, it is our understanding that all signs at DIA are FAA style 5. Please confirm the style of the signs required.
    Answer:   Signs shall be Style 5, Refer to Addendum #2.
Question Number  14:   Can the curing compound be removed by the shot blast method?
    Answer:   No, the shot blast method cannot be used to remove the curing compound.
Question Number  15:   On page P-620-3, states the Test Strip to be done with Type III glass beads, is that a typo error?
    Answer:   See revised specification in Addendum #2. The test strip will receive either Type I or Type III beads determine on color. Refer to Table 1.
Question Number  16:   Do they anticipate the runway opening before the 8 week period between placement of concrete and application of permanent paint?
    Answer:   The permanent paint will be applied prior to opening the runway.
Question Number  17:   Will the temporary paint only be applied to the new concrete and spalding areas?
    Answer:   Temporary paint has been removed from the project with Addendum #2. All existing markings and areas of new concrete or spall repair will receive one coat of permanent paint.
Question Number  18:   On page P-620-4, the application table states 114/ft2/gal, it is generally 115/ft2/gal, is this a typo error?
    Answer:   The table was revised to show 115ft2/gal with Addendum #2.
Question Number  19:   Drawing Sheet CJ552, Note 5: all temporary paint shall use Type I beads and all permanent paint shall use Type III beads. This conflicts with paint specification P-620, Para. 620-2.3 that calls for Type I beads. Which is correct?
    Answer:   See Addendum #2. Note 5 was revised to remove the conflict.
Question Number  20:   Drawing Sheet CJ552, Note 11: surface painted signs shall use Type I beads on the red and Type III beads in the white. This conflicts with paint specification P-620, Para. 620-2.3 that calls for Type I beads. Which is correct?
    Answer:   See revised specification in Addendum #2. Note 10 on sheet CJ552 was also revised with Addendum #2.
Question Number  21:   Drawing Sheets CJ121 thru CJ129, Note 10: glass beads shall be applied to temporary markings. This conflicts with paint specification P-620, Para. 620-3.5, subparagraph 3 that states temporary markings to be applied at 50% application rate and no glass beads. Which is correct?
    Answer:   Temporary paint has been removed from the project with Addendum #2.
Question Number  22:   Where is the Schedule IV; P-605a Joint Seal Repair – 110,000 LF located on the project? The plans indicate where the full depth panel replacement and spall repairs are located, but we don’t see where on the project that Joint Seal Repair is located. The P-604-6.1 (pg. P-604b-6) and P-605-5.1 (pg. P-605-5) specifications indicate that the joint seal associated with new concrete pavements will not be measured or paid under the P-605a Joint Seal Repair line item. Rather, those joints will be paid as incidental to the new concrete.
    Answer:   Joint seal repair will be located on all the joints of the panels adjacent to the centerline of Runway 7/25 and in select areas as directed by the DEN Project Manager. Also, see note under Schedule 4 quantity table on sheet G--004. Any joint seal associated with concrete panel removal and replacement will be incidental to the new concrete.
Question Number  23:   Is the 110,000 LF of Joint Seal Repair located in one area of the project or will the joint seal repair locations be randomly selected by the engineer throughout the project?
    Answer:   Joint seal repair will be located on all the joints of the panels adjacent to the centerline of Runway 7/25 and in select areas as directed by the DEN Project Manager. Also, see note under Schedule 4 quantity table on sheet G--004. Any joint seal associated with concrete panel removal and replacement will be incidental to the new concrete.
Question Number  24:   Based on the drawings provided for bid, the drawings for the pavement markings are not very useful in performing take-offs as the location and dimensions of the markings are poor. The markings for taxiway centerlines are actually displayed and measure wider than the runway centerlines. Additionally, there is no way to determine what colors are needed for the temporary markings. Will better drawings be provided so it can be determined what colors by quantity are actually needed?
    Answer:   The markings shown in the plan set are for representation only. Line lengths can be scaled from the drawings and total square footage can be found by applying dimensions from the details on Sheets CJ551 and CJ552. The temporary pavement marking bid item has been removed from the project with Addendum #2. Only one coat of permanent paint will be applied to the entire complex.
Question Number  25:   There is no Bid Item for Field Photometric Testing. What Bid Item should Field Photometric Testing be included in?
    Answer:   A bid item has been added with Addendum #2
Question Number  26:   Specification L-140-1.2 requires photometric testing of new semi-flush and elevated runway edge lights only. There is no requirement to photometric test inset light fixture that are to be removed and reinstalled. Do the inset light fixtures that are to be removed and reinstalled require photometric testing?
    Answer:   Contractor shall photometric test existing lights to be removed and reinstalled.
Question Number  27:   Bid Item L-122Aa requests a unit price for a 30KW CCR with Internal Ace. Specification L-122C-2.7 states CCR's shall be procured by the Airport from ADB Airfield Solution. Does bid item L-122Aa require a unit cost?
    Answer:   Procured by Contractor, Refer to Revised Specification.
Question Number  28:   Bid Item L-122Aa requests a unit price for a 20KW CCR with Internal Ace. Specification L-122C-2.7 states CCR's shall be procured by the Airport from ADB Airfield Solution. Does bid item L-122Ab require a unit cost?
    Answer:   Procured by Contractor, Refer to Revised Specification.
Question Number  29:   Drawing EL501, Detail 5, and Notes 1 and 9 on Drawing EL501 require Epoxy coated flange ring with concrete ring, spacer rings and base cans. Do flange rings, spacer rings and base cans require epoxy coating?
    Answer:   Base cans, spacer rings, and flange rings shall be galvanized. Epoxy coating is not required.
Question Number  30:   Drawing EL501, Detail 5 requires Stainless Steel Bolts with Anti-Seize lubricant to be used. Specification L-125-2.24 requires bolts attaching equipment to base cans to be dual coated with ceramic-metallic base coat and fluoropolymer top coat. What type of bolt is to be included?
    Answer:   Dual coated bolts shall be used
Question Number  31:   Drawing EL503, Detail 5 and Note 3 requires Galvanized Flange with Concrete Ring and Spacer Rings. Is this correct as other section of the bid documents require these item to be epoxy coated?
    Answer:   Base cans, spacer rings, and flange rings shall be galvanized. Epoxy coating is not required.
Question Number  32:   Specification L-128-2.14 requires a quantity of 40 each LED Modules and 40 Lenses to be provided. Specification L-140-1.4-b requires a quantity of 50 each LED Modules and 50 Lenses to be provided. Are both the quantity of 40 and quantity of 50 to be provided?
    Answer:   Only 50 Led Modules and 50 Lenses are required.
Question Number  33:   Detailed 11" preset anchors for signs are too long for detailed concrete depth. Will drill-in anchors on page EL205 be accepted in Lieu of preset anchors?
    Answer:   Use 6" anchor bolts.
Question Number  34:   Detail indicates ground rod being directly under sign and without a test well. Will ground rod, offset from underneath sign be acceptable and will test well be practical to eliminate a trip hazard?
    Answer:   Ground Test Well is not required. Install Ground Rod underneath sign per plan.
Question Number  35:   Detail indicates sign power elbows to be installed in fill. Will concrete encasement of elbow be acceptable?
    Answer:   Yes
Question Number  36:   Detail indicates RPU enclosures not attached to the housekeeping slab. Will the structures being attached to a monolithic concrete slab (housekeeping pad) be acceptable?
    Answer:   A short piece of 3" or 4" PVC pipe is acceptable for use as a transformer support.
Question Number  37:   Will DEN standard rebar cage ((6) #5 hooks & (4) #4 rings) be acceptable in lieu of detail indicated on EL650?
    Answer:   The alternative method is acceptable.
Question Number  38:   The reinforcing steel for the wind cone on page 210 calls for a Welded cage for the wind cone structure. Can we substitute tie wire to connect the steel instead of welding it?
    Answer:   Yes, but special precaution shall be implemented to make sure rebar doesn't slip during concrete pouring.
Question Number  39:   Detail shows conduit in non-paved areas indicates native soil fill with 95% compaction. Will the installation of flow fill in lieu of native soil be acceptable?
    Answer:   Flow fill is acceptable.
Question Number  40:   Detail indicates ground rod protruding through RPU slab. Will installation of ground well in lieu of protruding ground rod be acceptable?
    Answer:   Ground well is acceptable.
Question Number  41:   Detail indicates 1/4" to 1' drainage slope. Is this a minimum slope?
    Answer:   Yes, this is a minimum slope.
Question Number  42:   In lieu of recording number and depth of spacers, will QA/QC compliance with FAA adivisory circulars?
    Answer:   Recording number and depth of spacers is not required.
Question Number  43:   To elimate the possibility of removing extra panels and excessive CTB, can the 4' minimum exposure of existing concrete for new base can installations be reduced?
    Answer:   If 4' exposure causes a removal of an additional panel, the criteria will be field adjusted by the Denver Project Manager.
Question Number  44:   Detail calls out for 6" RGS for supporting structure of equipment rack. In order to accept frangible fittings, 2" RGS is required. Please Advise.
    Answer:   Equipment rack is purposely outside ROFA and TOFA and does not need to be frangible.
Question Number  45:   Note #11.2 indicates re-opening of all units for acceptance inspection after installation. Specified QA/QC program would suffice for final acceptance inspection and without replacing bolts twice per FAA Engineering Brief 83.
    Answer:   Airport QA/QC is acceptable.
Question Number  46:   Will DEN/Design inspectors be on site, on a daily basis for progress inspections?
    Answer:   Yes.
Question Number  47:   EL Note C1 Please specify type of "tube" to be used for salvage fixture packaging.
    Answer:   No specific product, organize in a neat manner so as not to damage the secondary leads.
Question Number  48:   Specification indicates requirement for formal photographic record and video taping. Addressing cost effectiveness, is this required? If required, please indicate which work item description this item would be addressed?
    Answer:   The amount of photographic documentation should be discussed with the DEN Project Manager. Only photographic and video are anticipated with this project.
Question Number  49:   Specification indicates livestreaming images in 15 minute intervals during construction operations. Please specify means & methods of camera mounting, locations, and access.
    Answer:   The amount of photographic documentation should be discussed with the DEN Project Manager. Only photographic and video are anticipated with this project.
Question Number  50:   Please provide the referenced BIM project execution plan. What is required for this requirement?
    Answer:   See Addendum #2 for the referenced BIM project execution plan that was provided by the DEN BIM Department.
Question Number  51:   Where are the signs required that are referenced in this spec section?
    Answer:   See sheet G-040 through G-045 for anticipated locations of temporary signs.
Question Number  52:   This section seems to be referencing building equipment, including mechanical equipment. For this contract, what systems are required to be included?
    Answer:   The only systems that may be included under this specification would be the Pavement Sensor System and the modifications to the Lighting Control System.
Question Number  53:   What systems are required to be included in this section for this contract?
    Answer:   The only systems that may be included under this specification would be the Pavement Sensor System and the modifications to the Lighting Control System. All associated "owner manuals" or "operational manuals" shall be provided to the DEN Project Manager.
Question Number  54:   What systems are required to be included in this section for this contract?
    Answer:   Items associated with the Electrical System.
Question Number  55:   For bid purposes, what is the quantity of chips, cracks and damaged racks to be included in our proposal?
    Answer:   Contractor shall point out cracks and repair based on direction from DEN Project Manager to negotiate separately.
Question Number  56:   EL101 & EL117 state to install threshold lights by cutting 4' x 4" deep and replace with asphalt. EL505 states to saw cut 48" deep. Please clarify which is correct?
    Answer:   Refer to Detail E505, Addendum #2.
Question Number  57:   The keyed notes reference the enlargement of B2 & G, but the corresponding CI.117 & CI.134 don't show any scope for this work. Please clarify what the scope of enlarging B2 & G entails.
    Answer:   The TWY B2 and G enlargements shown on sheets E401 and E402 are simply enlarged views of these taxiways. The views were enlarged to more clearly show the light naming and circuiting associated with the lead-on and lead-off lights in this area.
Question Number  58:   What is the change on prints posted 12/8/17? How do they differ from the original drawings posted 11/28/17?
    Answer:   There was no change to the drawings between 11/28 and 12/08. The drawings were uploaded a second time on 12/08 with no issues.
Question Number  59:   No Bid Item to repair broken bolts. How should these costs be identified for this bid?
    Answer:   Contractor shall assume that no more than 5% of the bolts are broken and require retapping. Cost shall be paid for under bid item in Section L-128.
Question Number  60:   Drawing show to utilize existing & specs indicate to remove & replace. What is the correct method?
    Answer:   Item L-132 Runway Surface Condition Sensor System and its associated plans will be revised with Addendum #3.
Question Number  61:   Page 27, Bid Forms – Refers to Alternates #1 through #3. Page 1 of the Bid Proposal Summary refers to Schedules 1 through 4. Which is correct and can the bid forms be re-issued?
    Answer:   Please see Addendum #2.
Question Number  62:   IB-24 Disadvantaged Business Enterprises (DBE) Requirements, Paragraph 6, states that “on or before the seventh (7th) work day after bid opening, all of the bidders are required to submit an executed DBE Letter of Intent. Due to the proximity of the bid opening date to the upcoming holidays, can the number of days be extended until after the holidays?
    Answer:   This requirement has been revised. See Addendum #1.
Question Number  63:   Sheets 99 and 100, Initial Erosion Control Plan. The scale on these sheets appears to be incorrect?
    Answer:   The Scale of the Erosion Control Plan sheets should be 1"=100'.
Question Number  64:   Sheets 99 and 100. Is the area on these sheets the only excavation included in items P-152a and T-905a?
    Answer:   The quantity for P-152a and T-905a are only for the disturbed area shown on Sheets 99 and 100.
Question Number  65:   Plan Sheet G-004 Note 6 states “The inspection, maintenance, and repair of BMP’s are incidental to Pay Item … and are the sole responsibility of the contractor until the permit is transferred or final stabilization is achieved.” Does the CCD anticipate that the contractor will transfer the permit?
    Answer:   It is not anticipated that the contractor will transfer the permit.
Question Number  66:   Plan Sheet G-009 details steps necessary to establish and reclaim a slurry pit at the batch plant site. Are there any other requirements that need to be met regarding this slurry pit?
    Answer:   See Note 66 on revised G-004 in Addendum #2 for additional information.
Question Number  67:   Plan Sheet G-040 shows a 30 day admin period and a 90 day construction period. Is this the intended schedule for the project?
    Answer:   Addendum #2 changed the Admin period to 45 days with a 93-day construction period. This is the intended schedule for this project.
Question Number  68:   SC-7 Prosecution and Completion of the Work, Page 59, indicates that the contractor shall complete the work within 150 consecutive calendar days from notice to proceed with an administrative completion date of June 1, 2018 and construction completion of September 1, 2018. Is this the intended schedule for the project?
    Answer:   See Addendum #1. The work shall be completed in 138 consecutive days. The administrative completion date is now May 31, 2018, and the construction completion date remains September 1, 2018.
Question Number  69:   Plan sheet CP-506 has details for performing spall repairs at light cans. Since there is no pay item for this work, what is the anticipated quantity of spall repairs that will be needed at light cans?
    Answer:   Detail 6 and Detail 7 were removed from plan sheet CP-506 with Addendum #2. These details for epoxy repair are included in the electrical sheets. It is not known how much spall repair will be completed around lights, but very little should be anticipated.
Question Number  70:     There are several utility structures to be adjusted as well as drainage piping to be installed under this contract. Will seeding of the grading disturbed by this work be measured and paid?
    Answer:   Yes, seeding of the disturbed area associated with this work will be measured and paid and have been included in the quantities.
Question Number  71:   Please confirm that Section 013223, includes all construction survey to include the As-Built survey (BIM) or is only the As-built survey to be carried under this item with all remaining construction survey allocated throughout the other pay items?
    Answer:   Section 013223 includes construction survey and As-Built survey with BIM features.
Question Number  72:     Sheet E-001, Electrical General Notes – Under which items should the cost for pumping water, cleaning bottom, repair of chips in cracks in manhole walls, replacement of broken cable racks be carried, photographs of walls and floor, cable butterfly details and cable identification markings be carried?
    Answer:   Pumping out water, cleaning bottom, photographs of walls and floors, cable butterfly details shall be bid under Section L-128. Cable identification markings shall be included as incidental to the appropriate bid item in Section L-108. With regards to repair of chips in cracks in manhole walls, Contractor shall point this out to Denver Project Manager and, if required, a separate price will be negotiated to correct any deficiency.
Question Number  73:   Item P-159a, Concrete Crushing – Which of the three materials identified in the specifications should the Contractor anticipate crushing under this item?
    Answer:   The Contractor may be required to produce all three materials.
Question Number  74:   Would DEN more precisely define the bid line item BIM (Building Information Model) since there are many components to the BIM model /as-built that are also components of other aspect of the construction surveying i.e. concrete verification and control.
    Answer:   The BIM requirements are described in this Section and in DEN's Design Standards Manual, which is available on the Flydenver web site.
Question Number  75:   Should the BIM item include the field gathering of data for BIM standard as-builts?
    Answer:   Yes.
Question Number  76:   Does this bid item represent the Civil 3d CAD work only, only taking the field data to the digital model (office only)?
    Answer:   No.
Question Number  77:   Should the BIM/as-built take into account the control survey?
    Answer:   No. The BIM/As-Built submittal and the contral survey submittal are two separate items.
Question Number  78:   Does DEN anticipate re-monumentation of the end of runway monuments both North and South?
    Answer:   No. The exisiting pavement at the runway ens is not designated for removal.
Question Number  79:   ITEM 13410A 1.1: Section f. (4) mentions we are to provide control wire for new vault fiber loop. I am not sure what this is referring to, can we request elaboration?
    Answer:   Refer to revised Specification 13410 A.
Question Number  80:   ITEM 13410A 1.8: I don’t see any other reference to the Concourse Lighting computer in the drawings. I am wondering if this is from the Tower B Concourse project and did not get deleted from this specification? If this is a new node I need to know what node the opposing set of fiber drivers will be
    Answer:   Refer to revised Specification 13410A.
Question Number  81:   Are the regulators, regulator spare parts and S1 cutouts being provided by the airport?
    Answer:   No. All equipment shall be supplied by the Contractor.
Question Number  82:   Are the L862S to be quartz or LED? Spec page L-125-5 paragraph 125-2.11 is quartz, bid form item L-125b is LED
    Answer:   Fixtures shall be LED.
Question Number  83:   Spec page L-140-3 calls for spare fixtures, are these to be included in bid item L-128a?
    Answer:   Yes.
Question Number  84:   Spec page L-128-3 paragraph L-128-2.14 calls for 40 spare LED’s & lenses to accommodate possible breakage. Are these to be included in bid item L-125u or L-128a? Page L-140-3 calls for quantity 50. Please confirm the quantity and bid item number.
    Answer:   Quantity shall be 50. Include in L-128a.
Question Number  85:   Are the L852T to be quartz or LED? Spec page L-125-5 paragraph 125-2.8 says LED, bid item L-125o says quartz.
    Answer:   Fixtures shall be quartz.
Question Number  86:   Spec page L-125-13, bid item L-125u LED’s and lens for existing fixtures, for failure during photometric testing. Bid item qty is for 185, is there a further breakdown of the OEM, fixture type, color etc. ?
    Answer:   Refer to revised Specification L-125.
Question Number  87:   Detail indicates RPU enclosures not attached to the housekeeping slab. Will the structures being attached to a monolithic concrete slab (housekeeping pad) be acceptable?
    Answer:   Yes, Monothilic pad is acceptable.