Consolidated_RFI_Elevator_to_ADA_answeredv2.pdf

FA700018R0011 USAFA Elevators at Falcon Stadium Consolidated RFI’s Dated 28Aug2018

1. Precast landing slabs- lower and middle level in tower #1, and middle and upper level in tower #2- slab thickness is not defined. These slabs need to be 8” thick. Is 8” precast slab thickness acceptable?

RESPONSE: Loading for the slab has been provided in the Contract Documents. Required slab thickness shall be the responsibility of the precast manufacturer’s design based on the required loading.

2. Roof structure both towers- Called out as precast panel on architectural drawings, thickness is not indicated. These slabs need to be 8” thickness, two pieces per shaft. Is 8” roof slab thickness acceptable?

RESPONSE: Loading and dimensional constraints for the roof slab has been provided in the Contract Documents. Required slab thickness shall be the responsibility of the precast manufacturer’s design based on the required loading.

3. Detail 8/S510, steel column on double tee deck- Cannot produce double tee with thickened underside of deck. Steel column needs to bear on a steel beam just below the bottom of the 2” deck. This beam would span from embed to embed on the side of the double tee stem. Beam would be approximately 2” below bottom of deck (top of steel), approximately 6” deep wide flange beam. Is steel beam spanning from stem to stem carrying the steel column load acceptable? Does the beam and embeds need to be galvanized or stainless steel?

RESPONSE: Please see the attached revised details, sketches SK-001 and SK-002. (A-E)

4. Sheet S/102 double tee framing both towers- The 24” double tees will not cantilever 10 feet or the 12 feet. Max cantilever for the 24” double tee in this design condition is 4-5’. Can the drilled piers be moved to the west toward the existing structure to allow for a maximum double tee cantilever of 4.5’?

RESPONSE: The drilled piers cannot be moved closer to the stair landings due to existing foundations at those landings. The depth of the double tees can be increased to accommodate the require load and cantilever length. The supporting rectangular beam at the cantilevered end shall be lowered to account for deeper double tee members while maintaining the finished slab elevation at the landings. This allows for less pier exposed above grade.

5. Double tee bearing condition at interface with 14” insulated walls is not defined- Typically the double tees will bear on a steel bearing seat welded to an embed cast into the precast wall. Is a steel bearing seat condition acceptable at the interface of the double tee to the west wall of each tower? Is this steel seat condition to be galvanized or stainless steel?

RESPONSE: Based on the precast manufacturer’s design and/or typical detail for double tee slab supports, a pocketed bearing condition in the wall panel or an integrated wall panel corbel are both acceptable supports for the double tees.

6. Detail 6/A502 drop down double tee edge to receive handrail post- cannot cast double tee flange with drop down edge. Propose an 8” x 24” continuous rectangular beam full length (bearing same as double tee) to receive hand rail post connection. Is a 8” x 24” rectangular beam acceptable in lieu of the flange drop down condition?

RESPONSE: Yes, a rectangle beam with the same depth as the double tee is acceptable. (A-E)

7. What is the interface condition at the west end of the double tees (both towers) to the existing walkway?

RESPONSE: The condition is shown in Details 11 and 12 on A-502. (A-E)

8. Will a machine room less elevator of similar performance characteristics be considered in lieu of the hydraulic elevator in order to provide the owner with more cost competitiveness?

RESPONSE: No. (10 CES)

9. Project panelization requires manufacture and delivery of precast components that are 14’-4” wide. Panels this wide can be delivered on “slant frame” trailers to create a load approximately 12’-6” wide by 12’-6” tall. Is this size of load acceptable for gates, bridges, access, etc. on the Academy?

RESPONSE: The width and height of the load does not exceed the clearance for the gates and bridges with the exception noted below. If the GVW of the loaded vehicle exceeds 30 TONS the contractor must coordinate the bridge crossing with 10 CES a minimum of 2 weeks prior to entering USAFA. At this time the Tri-Intersection Bridge (most southerly bridge) is under construction with lane width restrictions. The contractor will be required to undergo inspection at the large vehicle inspection facility at the south gate, then exit USAFA and enter through the north gate to reach Falcon Stadium. (A-E)

10. We have identified discrepancies on the electrical primary and details that conflict with CSU electric service standards. The way it is designed is not per CSU electric service standards and is a very expensive way to build this service. We are concerned that if contracted that CSU will come back and have a completely different design for this system. Typically we submit all information and loads to CSU and their field engineer will provide a design for the primary electrical, transformer and vault penetrations. The question is, should that portion of the work be bid per actual CSU standards or the way it is designed in the RFP drawings?

RESPONSE: Yes, this should be bid per actual CSU standards. These details reference CSU service standards. Refer to revised SOWv1 dated 28 Aug 2018.

Plan Sheet ES101 and ES501.

1. Detail 2. Typically CSU requires (1) 4" PVC conduit direct buried at 48" from the vault to the transformer pad. no concrete encasement required.

Unless a USAFA spec. Other services on base have been built this way.

RESPONSE: Per UFC if the base is owning and providing the primary it needs to be concrete encased, if it is owned and maintained by CSU concrete encasement is not required and shall be per CSU service standards. Refer to revised SOWv1 dated 28 Aug 2018.

2. Detail 3. CSU does not require GRC 90's unless primary run is at or over 300LF. CSU provides the precast transformer pad. CSU service standards only require 1 ground rod in conduit window for grounding.

RESPONSE: Follow all of CSU standards for primary feeders and side of service transformer. Refer to revised SOWv1 dated 29 Aug 2018.

3. Detail 1. CSU does not specify secondary conduit laterals to CT Cabinet/equipment. They can be direct bury PVC with GRC risers out of ground to the CT cabinet. This can save on the concrete encasement.

RESPONSE: Provide concrete encased secondary feeder from CT cabinet and service disconnect into elevator stadium electrical room. Refer to revised SOWv1 dated 28 Aug 2018.

11. Please reference Section B – Supplies or Services and Prices. Line Item

0001 and 0002 ask that the pricing be divided up as either “REPAIR & REPLACE CONSTRUCITON” or “NEW MINOR CONSTRUCTION” as shown on the design drawings. We have reviewed the design drawings and have not been able to locate the differentiation in scope of work between Line Item 0001 and 0002. Please advise if we have missed this in our review, or clarify as required.

RESPONSE: All work will fall into the Element of Expense Identification Code (EEIC) 522. There will be no 529. (10 CES)

12. A601, door schedule references Hardware Sets, however there are no HW set descriptions provided, please provide.

RESPONSE: Hardware set descriptions may be found under Specification Section 08 71 00 DOOR HARDWARE, Article 3.5 HARDWARE SETS. (A- E)

13. Section B, page 3 of 36, CLIN schedule indicates work as described on the drawings however, there is no identification on the drawings or description provided. Please provide.

RESPONSE: All work will fall into the Element of Expense Identification Code (EEIC) 522. There will be no 529. (10 CES)

14. How is the Bridge supported at the Towers? Please provide a detail.

RESPONSE: See response to #5 above. (A-E)

15. What is the “builders program” and what is required for it?

RESPONSE: BUILDER is an Air Force Asset Management database. The Contractor will be responsible for filling out BUILDER forms (see attached) and submitting them at the end of the project. (10 CES)

16. Can the CAD drawings be provided prior to bid so the contractors will know what is involved in bringing them up to CAD standards?

RESPONSE: Yes. (10 CES)

17. Will any of the HVAC or Elevator controls need to be tied into the EMCS?

If so, will this be Siemens?

RESPONSE: The HVAC controls will not need to be tied into the Energy Management Control System (EMCS). (10 CES)

18. The stadium lighting pole may need to be removed and reset to set up the drilling rig. Will this be the responsibility of the contractor?

19. If the stadium lighting pole needs to be reset, will Musco be required to realign and re-aim the lights?

RESPONSE: The Contractor will be responsible for realigning and re-aiming the lights. (10 CES)

20. Please refer to the specification Section 14 24 23 Hydraulic Passenger

Elevators, Paragraph 2.4.4. The referenced paragraph indicates that hole-less elevators are not acceptable. We are wondering if this is an outdated specification, and if possibly we would be able to propose a hole-less type elevator vs the in-ground option specified.

RESPONSE: The A-Es research indicated that because of the large travel distances, this elevator would be out of the practical range of non-telescoping, hole-less jack shafts. The base UFGS specification prohibits telescopic plungers. Please also see response to Question 8, above. (A-E)

21. Can it be assumed that the door at opening 2E is hollow metal and not aluminum as shown on the door schedule (sheet A-601)?

RESPONSE: Yes, door at opening 2E is hollow metal. (10 CES)

22. There are hardware sets shown on the door schedule; where is it found in the plans or in the SOW.

RESPONSE: Please see response to Item 12 above. (A-E)

23. Page CS101, note 4 calls out for water line, but the plans don't show us putting in a new water line only storm sewer. Are we putting in any new water lines?

RESPONSE: See L-600 for location of water lines. (A-E)

24. What are the management requirements for this project. Can the project Superintendent also be the QC and Safety manager?

RESPONSE: Yes, as long as all duties of the Superintendent, QC and Safety Manager duties are met. (10 CES)

25. Ref. Plan Sheets CD-101 and AD-101, Are there any as-built drawings available for the existing retaining walls that would show the construction and configuration?

RESPONSE: One structural sheet from the original stadium drawings was provided in the Bidding Package. That is the only retaining wall information found. (10 CES)

26. Ref. Plan Sheet A-101, areas identified by Keynotes 2 &7. Between slabs, waterproofing is not called out between the precast panels and the topping slabs at the middle and upper level bridges. Does the Government desire the installation of waterproofing between these two materials?