Amend_2_Questions_21Jun18.pdf

Questions Answers For the past performance requirements on the proposal, can we use current/on going projects? Yes, but the project will only be evaluated up to the completed percentage of work at time of proposal submittal.

• All G2 Advanced Series H6J66A & H6J88A Cabinets listed in the Spec Section 27 10 00 pages 13-16 have been discontinued. Should the HPE replacements be used as substitutions?

• BW935A HPE Custom Door Branding Kit is already discontinued with no replacement.

• P9R48A HPE G2 Mtrd 2.8kVA/L5-30P Vt NA/J PDU replaces H8B48A HPE Mtrd Swtchd 2.8kVA/5-20R /NA/J PDU.

• HPE no longer have available Tie Down kits for 800mm Racks.

• There are a few accessories listed that have HPE replacements.

Please provide guidance on what is acceptable to quote.

The HPE P9K08A with equivalent accessories would be an acceptable substitute.

Omit requirement for branding kit.

Unit P9R48A would be an acceptable substitute.

The P9K08A is a 600mm rack.

Suitable replacement accessories identified by HPE would be acceptable.

Can you please clarify what labor division is responsible for the following work:

Sheet FD101: 3 Existing fire water entry to be removed and a new water entry to be provided at a different location.

Remove all associated piping below floor and cap. Remove outside bell, fire department connection and system main drain. Patch all wall penetrations to match existing.

and

Sheet FX101: 1 Provide new fire water entry detail 1 on sheet FX201

We would prefer to see Division 22 or 33 preform any work below the fire sprinkler riser flange (all underground work) and Division 26 remove the outside bell as they are both licensed to do so and would reduce cost and the number of contracts on site.

Unless specified in the drawings or specifications the Government does not dictate work to be performed by trades. The Prime Contractor is ultimately responsible for coordinating work between trades and ensuring all work is accomplished.

In the event that Division 21 (Fire Suppression) is responsible for all work listed above including the underground work does the GFAFB have and underground utilities division or subcontractor that the bases uses/works with exclusively?

No.

Also is there any fire hydrant water flow information (static pressure, residual pressure, and flow in GPM) on base for fire sprinkler calculations?

Hydrant test conducted by the design A-E provided the following results:

Static pressure= 57 psi

Residual pressure= 46 psi

Flowing 2,300 gpm

Refer to plan page A-101, vestibule 100, door 100-A. As well as the first floor door and frame finish schedule on A-

602, detail 6D/A-602, and 1/S-201.

Door 100A has note # 3 (blast-resistant door and frame assembly) associated with it. 6D/A-602 shows a box beam head detail, but detail 1/S-201 shows an HSS4x4x5/16 interior door header. We believe that the detail on 6D/A-602 should be replaced with the steel tube header as shown on 1/S-201 in order to meet the designed blast requirements. In past experience on other blast rated door and frame assembly projects, the blast resistant vestibule door is usually the exterior one, door 100B in this case. Should the HSS tube steel and rated assembly be switched?

Please review and advise. In past experience on other blast rated door and frame assembly projects, there is a vertical mullion required to meet the designed blast requirements. There doesn’t seem to be one shown on the drawings or stated in the specifications? Please review and advise.

Install door 100A with HSS4x4x5/16 as shown on structural drawings. Interior vestibule door is intended to be blast rated. Hardware Set #2 in Spec Section

08 71 00 applies to this door; this set includes a keyed mullion of 3/16-inch thick steel.

I was hoping to get some clarification on the expansion joint covers shown on detail 5/A-401 and 7/A-811. Is there a certain brand & product that is acceptable?

No specific brand or product is required. Expansion joints must meet requirements identified in applicable specifications (such as 09 29 00) and match the basic configuration and components shown on drawings, appropriately for the specific conditions and needs of the location.

Refer to plan page AD101, LS Staging and Storage room 115.

There are 7 mobile shelving units on rails in the NE corner of the room that are not shown on the demolition plans.

Are these to be removed by others? Please review and advise.

Remove the shelving and track. See revised drawing AD101.

I was hoping to get some clarification on the access doors that are called out in spec. section 055013. These are typically in Division 8 and I am having trouble figuring out exactly where the would be needed. Is there a total number required?

See Revised Spec Section 05 50 13. Paragraph 2.3 was added.

I am looking at the plans and I have found that the specs and prints show two different request for the type of flooring on page AF101 in room 133. Can you clarify this?

Use CPT-1 as indicated on Room Finish Schedule. That will avoid an unnecessary transition at the door between 134 and 133.

Will the mechanical engineer be covering the construction costs phase for GFAFB Repair Ops Facility Bldg 541 project? If mechanical engineer does not cover this phase of the project can we hire the mechanical engineer to do this portion and include it our proposal?

In accordance with Section 01000 1.1 of the Technical Specifications, the Prime

Contractor is responsible for "furnishing all plant, labor and materials to perform all work in strict accordance with these technical provisions and the project drawings." This includes the management of all subcontractors and the costs associated with them.

In Spec 08 34 73 Page 5, door assemblies are required to have meet STC-50. On the door schedule, they are calling out to have STC-47. Please verify the rating to be used.

The second paragraph of section 08 34 73, part 2.2.2 has a typo and should indicate STC-47 instead of STC-50. See revised spec 08 34 73.