Question Responses 21 Jun.xlsx
XLSX spreadsheet 22 KB Posted
- Attached to
- Repair GATR HF Antennas
- Solicitation number
- FA481921R0003
About this file
This document outlines the requirements for a federal solicitation to repair ground antenna radio (GATR) high frequency (HF) antennas at Tyndall Air Force Base. The scope of work includes engineering, furnishing, installing, and testing three new HF triple-mode SPIRA-CONE antennas and installing new RF cabling and manhole/duct systems. A design-build team consisting of a general contractor and architectural/engineering firm will perform the services described in the solicitation statement of work and supplemental documents. Questions were asked and answered during a site visit to clarify requirements regarding geotechnical reports, removal of existing foundations and cabling, clearance from the security fence for new antenna installation, details of a new gravel road and building renovations, submittal formats, and responsibility for cable connections inside buildings. The performance period may be extended based on current antenna lead times exceeding the 165-day duration listed in the solicitation.
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PPI Log
| PPI # | Question Date | PPI # | Category (i.e. General Consitions/ Design/SOW/etc) | Question | Government Response | RFP / Solicitation Attachment Provided Yes or No | Response Provided By | Technical Request for Amendment # (Note this is the Tech Amend # not the ACQ Amend #; tech amend is A, B, C, etc.) | PM RELEASE (INITIALS) | DATE PM RELEASED TO ACQ FOR ACQ Amendment | ACQ Amend # | 21 Jun 21 CE Comments to CONS |
| 1 | 1 | Can a geotechnical report be provided to assist with foundation design? | Soils are generally sandy with groundwater around 2-3 feet below grade. Any geotechnical information in vicinity of site from other projects will be provided as information only. Contractor is responsible for verification of existing site conditions via geotechnical exploration. | |||||||||
| ERROR:#REF! | 2 | If not, do the existing antenna foundations have to be removed by the contractor? | Old tower foundations are to be removed by contractor. | |||||||||
| 3 | Will the existing antenna cable be abandoned in place? | Yes, it will be abandoned in place. | ||||||||||
| 4 | Can the 2 existing antenna’s be taken out of service at the same time for installation of new antennas? | TBD | ||||||||||
| 5 | Is a maintenance loop required at the termination panel? | No maintenance loop is required at the outdoor antenna enclosure. Include 2-3m maintenance loop of the interior portion of the feedline jumpers to allow for future rack positioning and maintenance. This loop shall not exceed maximum bend radius, and may be coiled and secured within the rack or above the rack in the cable tray, as space allows. | ||||||||||
| 6 | Will renovations to building 1255 affect cable installation? Please provide further details. | No, the renovation work will not affect cable installation. | ||||||||||
| 7 | Please provide layout of recently installed fence. | 100% approved design drawings for new fence attached. | ||||||||||
| 8 | Does the west LTO site have enough clearance from the fence line for the new antenna installation? Please confirm minimum clearance is 100 feet. | Minimum clearance, per the manufacturer, is 50 feet from the most outer edges of the antenna system (including the aerial supporting arms, measured laterally). With the published antenna diameter of 60 feet, the total minimum fence proximity would be 160 feet, or an 80 foot radius from the center of the antenna. -EP | ||||||||||
| 9 | It was stated that a new gravel road is going to be installed on the site. Please provide details of where the road will be installed. | 100% approved design drawings for new access road attached. | ||||||||||
| 10 | We have received preliminary lead times on the antennas that are over 182 days ARO. The duration listed in the solicitation is 165 days. Will this be adjusted based on the lead time of the equipment? | If this is an issue once the contract is awarded, a POP extension will be considered. | ||||||||||
| ERROR:#REF! | 11 | It was stated that foundation work for the new antennas could start while waiting for delivery of the equipment. How much latitude does the contract have to shift the location of the new antennas in order to safely work on construction of the new foundations? | The new foundations may move within the immediate area, and maintain ample spacing from fencing and other obstructions. | |||||||||
| 12 | Is there a specific submittal format for antenna RF testing for military AFB documentation? | No specific format, include all antenna element VSWR reports | ||||||||||
| 13 | Regarding section “5.1.1.” states a safety climbing device shall be furnished to construct tower. Will this climbing device be turned over to the AFB after completion of construction? If so, how many climbing devices does the AFB require and is there a specific type preferred? | Not required for project. This will be eliminated from revised TRD. | ||||||||||
| 14 | Regarding section “3.1.5.2.1.” states the manhole / duct system requires and sump, but does not state sump dimensions. Will it be up to project designer to determine size? | HHs shall meet the requirements of TIA-758-B, paragraph 5.2.2 (BAT) | ||||||||||
| ERROR:#REF! | 15 | Regarding section “3.1.9.2.” includes a “solar power system” as part of the antenna install. What exactly does this solar powered system feed power to? | Not required for project, SOW will revsied to descope the requirement. | |||||||||
| ERROR:#REF! | 16 | Is there a Bid Bond required? | No | |||||||||
| ERROR:#REF! | 17 | Will contractor or user be responsible for making the connection of the cables inside the building? | Contractor shall provide complete antenna paths from the antenna elements to the labeled & modified patch panel in the rack. All connections and terminations are the responisbility of the contractor. | |||||||||
| ERROR:#REF! | 18 | Does the GOV have GIS Mapping for the area from Bldg. 1255 to the new GATH HF Antennas that can be provided? | Available drawings will be sent with the response to the Q&A's. | |||||||||
| ERROR:#REF! | 19 | Will the temp towers behind Bldg. 1255 be removed from the site or will they be on site during construction? | They will be removed from the site after the radios are transitioned from building 1255 to swig space under a facility renovation project. | |||||||||
| ERROR:#REF! | 20 | During the site it was discussed to install geotextile fabric and gravel within the foot print of the antennas to control the undergrowth of the site. Please confirm if desired. | Yes, this is requested. | |||||||||
| ERROR:#REF! | 21 | During the site visit we were told that there we additional projects being conducted in the project area, when are these projects scheduled to be completed? Will the current projects coinside with the installation of the new antennas? | There are three (3) awarded projects within the 1255 GATR site as of Jun 21. #1-Facility Remodel scheduled for completion in early CY 2022. #2-GATR Access Road scheduled for fall 2021 completion. #3 Perimter security fence scheduled for summer/fall 2021 completion. | |||||||||
| ERROR:#REF! | 22 | It was noted at the site visit that there was a bird nest present on one of the antennas, please confirm if the removal of the nest will be the responsibility of the contractor or the government? If contractor, what are the requirements? | The noted bird nest was on an existing damaged telephone pole, not the antenna to be replaced. | |||||||||
| ERROR:#REF! | 23 | During the site visit it was stated that prior to the demolition of any of the antennas we would have to bring one of the new antennas online to handle the load. Please confirm and provide preferred phasing order of antennas. | TBD | |||||||||
| ERROR:#REF! | 24 | Can the GOV provide data on what type of bird protectors they would like to be used on the antennas? | End User prefers cone shaped anti-perching devices similar to the ones used for Tyndall Air Force Base giant voice system. | |||||||||
| ERROR:#REF! | 25 | Are the recyclable metals generated from demo of the old antennas to be turned over to base recycling or disposed off site? | Base environmental can provide a dumpster for contractor use in order to recycle metals. | |||||||||
| ERROR:#REF! | 26 | It was mentioned at the site visit that the GOV request the option on going with a tripple mode vs quadruple mode. Please confirm and provide a model number for the quad mode as provided for the triple mode. | Spiracone models include Single Mode, Switched Mode, Dual Mode, and Triple Mode. The antenna specified is not available in Quad Mode. -EP | |||||||||
| ERROR:#REF! | 27 | Does the Gov request that fencing be installed around the antenna? If so please specify size and height? | No fencing is required for the project. | |||||||||
| ERROR:#REF! | 28 | Please confirm existing conduit and cabeling will be cut below grade and abandoned in place? | Abandon all existing conduit and cable in place. | |||||||||
| ERROR:#REF! | 29 | All spoils that are generated on site during construction are to be contained within the work area, if distributed within the work site will not have to be disposed of as hazardous materials. Please confirm? | Correct, no disposal needed if soils can be reused within close vicinity of the new antennas and underground utility lines. | |||||||||
| ERROR:#REF! | 30 | Does the GOV have recent geotech reports for the work area? If so please provide. If not it we will assume sandy but sutible soils for foundation installation. Please confirm? | Soils are generally sandy with groundwater around 2-3 feet below grade. Any geotechnical information in vicinity of site from other projects will be provided as information only. Contractor is responsible for verification of existing site conditions via geotechnical exploration. | |||||||||
| ERROR:#REF! | 31 | SOW Section 2.3.4 states a licensed architectural/engineering firm shall be acquired to develop construction documents to meet the requirements. If Commercial Off The Shelf (COTS) antennas and manholes are being utilized, will the manufacturer design drawings and installation plans suffice? | All plans will require a professional engineer stamp along with pertinent calculations. Plans showing additional details regarding site layout, cable runs, and other pertinent details will be provided in the design packages. In regards to COTS A licensed engineer/architect will need to validate compliance with contract requirements. | |||||||||
| ERROR:#REF! | 32 | SOW Section 3.4 requires personnel to submit background check applications and possible fingerprints for badging and site access. Is this required if personnel hold Common Access (CAC) cards? | Yes, DBIDs application for all personnel to work on project is required. | |||||||||
| ERROR:#REF! | 33 | Provided the contractor is not required for making the connection of the cables inside the building or for installation/operation of the radio equipment; is there any known software required for the installation, test and acceptance of the antennas and manhole duct system? | No special software required. | |||||||||
| ERROR:#REF! | 34 | Is a drawing package/as-builts of the facility entrance panels, facility power panels, interior cable routing and facility grounding schematics available? | Available drawings will be sent with the response to the Q&A's. | |||||||||
| ERROR:#REF! | 35 | SOW Section 4.13 requires the contractor to provide an engineering survey prior to demolition. What is to be included in this survey? We assume this is a demolition plan complete with a rigging plan for demolition of the existing antennas. Are there any other additional required contents? | The intent is to provide a site survey identifying the extent of demolition, along wirth the rigging plan and other pertinent documentsthat the contractor thinks is necessary. | |||||||||
| ERROR:#REF! | 36 | Are there any known asbestos or hazardous materials in the facility or the antenna fields? | No asbestos noted. Site was former skeet range, materials may be found within the site footprint. If soils are to be reused within the site and not hauled off base, no hauling of hazardous material needed. | |||||||||
| ERROR:#REF! | 37 | Are solar powered FAA/obstruction lights allowed/suitable for this project? | Obstruction lights not required based upon antenna height and distance away from runways. As a reference, the 65 ft. tall towers recently installed at 1255 facility did not require obstruction lights. These antennas will be less than 65 ft. tall. | |||||||||
| ERROR:#REF! | 38 | Each new antenna will have three active coax cables and one spare. Are we allowed to terminate the spare cable in the J box on the ground plate and properly ground the center conductor for lightning protection? | Yes. | |||||||||
| ERROR:#REF! | 39 | What specifics do you require for concrete in the conduit trenches? Gunite, Slurry, reduced PSI? how thick does this layer need to be? | Direct bury conduit and provide a minimum of 18" clear cover of sandy fill over conduit. Utilize existing soils on site to greatest extent possible. | SOW has been updated in TRD paragraph 1.3.1 | ||||||||
| ERROR:#REF! | 40 | Will we receive updated docs for proposed renovations to building 1255, new gravel roads, and site sketch for the new fence that is going in? | Available drawings will be sent with the response to the Q&A's. | |||||||||
| ERROR:#REF! | 41 | Per the site visit, we may need to include a new patch panel. Do you have the specifications, make, model size rack, for this unit? | Replace the patch panel if required to ensure a complete and usable facility. | |||||||||
| ERROR:#REF! | 42 | Per the site visit, Please confirm the maintenance loop length required for the jumper that connects to the patch panel from the coax. | Include 2-3m maintenance loop of the interior portion of the feedline jumpers to allow for future rack positioning and maintenance. This loop shall not exceed maximum bend radius, and may be coiled and secured within the rack or above the rack in the cable tray, as space allows.-EP | |||||||||
| ERROR:#REF! | 43 | Will the contractor's engineering firm be required to run structural capacity per the latest TIA standards on the new support structures as well as the old antennas and foundations? If so, does the AF have the design drawings for them so they can be run? | No, existing antennas and foundations will be demolished and replaced with new foundations. All new infrastructure will be designed by the contractor in accordance with TIAA standards and provided to the government for review as part of the design package prior to construction. Per RFP standards, base design wind speed for Tyndall AFB is 170 mph for this structure per Oct 2019 MFR, this asuumes risk category 4. | |||||||||
| ERROR:#REF! | 44 | Will the AF run the EPA, and hazmat permits with the Base EPA offices? Time frames for EPA may take a lengthy time to approve. | Contractor will be responsible for preparing permits, and base environmental office will review all required documentation. In regards to hazmat, an initial AF 81/82 and hazmat determination letter will be required prior to start of construction. An AF Form 83 will be required to be submitted to environmental monthly indicating quantities of materials amnd chemicals used for the project. | |||||||||
| 45 | Please confirm, and indicate where these spoils may be distributed. Soil, water, and other vegitation that may be distrupted during the course of construction. | Distribute existing soil spoils in close proximity to excavations. Otherwise, off site disposal and testing will be needed. | ||||||||||
| 46 | During the site visit, it was discussed that extension of the jumpers be extended to the temp building to the south of BLD 1255 during the renovation period of 1255. Will that be a requirement that we will need to entertain for the bid? | No, beyond the current patch panel location in the existing rack, extending to the temporary facility will be the responsibility of another contractor. | ||||||||||
| 47 | Clarification in SOW section 2.3.7, calls out for 1 5/8" coax, but p/n is for 1 1/4" Please confirm which is required. | Should be AVA7-50 1 5/8 Heliax Cable -BAT. SOW will be modified to reflect this change. | ||||||||||
| 48 | Grounds were not installed on the guy anchor points, only on the base of the tower. Will we be required to place new grounds at each of the 4 anchors per antenna? If so, is there existing grounding system to tie it into exothermically? | An existing grounding system around facility 1255 is in place, the six (6) new towers required tie-in to this system in order to obtain 5 ohms or less resistivity testing under a previous project. | ||||||||||
| 49 | Need specifications for new surge arrestors. Will they be GFE or contractor supplied | Appropriate surge arrestors will be procured and supplied by the contractor | ||||||||||
| 50 | In the TRD Section 3.1.4.3.4 RF transmission lines, total insurtion loss has two different values. One is 1.8dB loss, and one is 1.4dB. Please clarify. East Spira-Cone has been identified in both of these paragraphs | All should be 1.4dB -BAT. SOW will be modified to reflect this change. | ||||||||||
| 51 | Is there a Government specified piece of test eqipment that is required for the sweep tests. | No. | ||||||||||
| 52 | Will we be installing the support structure for the new antenna on the NW corner or will this support structure be built prior to our installation of the new antenna? | The support system should be an included, integral part of the antenna system as received from the manufacturer. The contractor will install new foundations to anchor the included support system as specified by CE & MFR requirements. | ||||||||||
| 53 | Will the NEMA boxes affixed to the bld 1255, be GFE or will the contractor need to supply this. Due to the additional spares on each antenna there may not be enough room in the current conduit to add lines. | If new NEMA boxes are required they need to be provided by the contractor. -BAT | ||||||||||
| 54 | Will we need to submit two different prices based on the 252.208-7000 Intent to Furnish Precious Metals as Government-Furnished Material 1991-12? If so will the pricing schedule, Section L and Section M of the solicitation be amended accordingly? | Clause has been removed | ||||||||||
| 55 | There are two (2) due dates in the solicitation for the proposal. The 1442 shows Wednesday, June 23, 2021 at 11:00 local time. Section L shows the proposal due date as Saturday, June 26, 2021 at 11:00 CST. What is the proposal due date? | Solicitation has been amended | ||||||||||
| 56 | Due the antenna manufacturer's current lead time of 26 weeks, will the government consider extending the performance period? | If this is an issue once the contract is awarded, a POP extension will be considered. |
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