Amendment_02_-_Questions_and_Answers.pdf

6/5/2019

Aerospace Communications Facility (ACF)

Solicitation Number: 80GRC019R0001

Agency: National Aeronautics and Space Administration Office: Glenn Research Center

Location: Office of Procurement

Question Answer

There appear to be discrepancies on the finish schedule ( A-602) and the finish plans (A-142 and In. general, the material legend, finish plans and interior elevations shall govern over the finish schedule.

A-143). Please let me know which one you would like me to bid from.

1.Rooms 203, 203A, 205 and 209 shall receive FT-3. This is the same product as FT-1, but in a different color.

•Rooms 203, 203A, 20S, 207, and 209 schedule says FT-1 and plans show FT-3. 2.Restrooms 119, 123, 217 and 221 shall have CFT-1 and CFT-2 (ceramic floor tile).

•Restrooms 119,123,217, and 221 schedule says concrete plans show CFT-1 and 2 3.Restrooms 115 and 213 shall have CFT-3 (ceramic floor tile).

•Unisex restrooms 1115 and 213 schedule says CT-1 plans show CFT-3 4.Restroom walls shall have CWT-1 through 4 (ceramic wall tile).

•All restroom walls say CT-2 on the finish schedule and plans show CWT-1 through 4. S.Material legend shall govern. The designations on the material legend are also tied to specification Section 09 30 10 •The finish schedule also just labels CT for floors and walls where the material legend separates TILING.

CFT and CWT for floors and walls. I am assuming they just did not include the For won the finish schedule but it will still correspond with the number tile.

There is a bid schedule form (Schedule B) on pages 6, 7 & 8 which shows it should be filled out. In addition to Attachment H - Price Breakdown (Revised), the schedule located in section 8.4. shall be completed and Are we to include this with the proposal? included with the proposal.

C-501 Detail 2 "Typical Concrete Pavement" indicates a "Reinforced Concrete Pad Section" The reinforced concrete pad section is ancillary to the standard NASA detail 2/C-501 but does not apply to the Civil however details 4 "Medium Duty Concrete Pavement" and detail 5 "Heavy Duty Concrete project lay out. All other sections and notes within that detail are applicable.

Pavement" indicate ODOT 452 which is "unreinforced" concrete pavement. Can you please clarify where the "Reinforced Concrete Pad Section" applies?

What is the application rate for the Microfiber Reinforcing? How many pounds per CY? The microfiber reinforcing application rate is 1.511/CY.

What is the color pattern for the Decorative Concrete as shown on print C-101? See sheet L-101 for the concrete color patterns for the Entrance Walk and Entrance Plaza areas. The colors will be in two different shades of gray as noted on the drawing.

Attachment H - the price breakdown only shows 4 options, can you please advise if this will be Amendment 01 included a revised Attachment H to address six (6) options.

revised to include 6 options?

1.10.4 (and subsequent sections and subsections) requires the providing of GreyShield aggregate Materials listed by manufacturer's name as the basis of design is to denote the performance, quality and salient by EuroMC to precast concrete and cast in place elements. We would like to provide OTS features for eq·ual products, unless otherwise noted as a sole source requirement. Substitutions for materials can be Shielded Concrete in Lieu of Greyshield. It is a US product exceeds the specified ranges of submitted by the prime contractor, for consideration by NASA, once the contract is awarded. Please note, however, section 13 49 22 section 2.3 for concrete shielding elements. Below is the attached results for that the specification includes all shielding components including penetrations, doors, etc. The conductive concrete Is the attenuation obtained verse the specified shielding requirements. Data contained in the expected to out perform the doors and penetrations above a few GHz. The specification is largely driven by other graph was obtained through independent testing of a concrete section in compliance with the shielding components and not the concrete as the other components will be the limiting factor in overall system drawing cross sections in the RFP by Advanced Testing Services, Inc. of Albuquerque NM. Please performance. Therefore, the specification represents the required shielding system's performance and not Just the confirm acceptability. performance of the concrete.

The OTS Shielded concrete system doesn't require Galvanized Steel Meshes to achieve the Substitutions for materials can be submitted by the prime contractor, for consideration by NASA, once the contract is shielded required by 13 14 22 section 2.3. We request relief from section 30 45 33 section awarded. All performance requirements and tolerances must be met.

2.2.13.

The OTS shielded concrete system doesn't utilize the same RF Absorbers and Foil as called out in Substitutions for materials can be submitted by the prime contractor, for consideration by NASA, once the contract is 03 45 33 section 2.2.14 we utilize a 6" lap joint in the shielded concrete panels and a gasket awarded. All performance requirements and tolerances must be met.

material up 0.375" to 0.5'' thick (Tin plated, Copper Clad, Steel Gasketing) depending on the desired gap tolerances in the field. Please confirm this is an acceptable?