Attachment 12- XLWU218112 QAs 23 Jun 21.pdf

PROJECT ID AND LOCATION

RFI # QUESTIONS REF PARAGRAPH

DATE

ENTERED

DATE

SUBMITTED

RESPONSE

DATE

RESPONSE

1 Is the dismantled tower steel to be left on site for Tyndall AFB recycle center to pick up?

Attachment 2 -

Appendix A - 7.2.6

Contractor to break up old tower into pieces that can fit into base-provided dumpster. Base will haul metal to be recycled off site. Contractor will coordinate dumpster delivery with base environmental.

2 Will Tyndall AFB provide new signage for the new site? If not, is there a specification for what information is to be on each sign, including size, shape, location of installation and an accpetable material to be used?

Attachment 2 -

Appendix A - 9

An AF 3000/RFI for a previous tower project will be provided for reference. Provide signage similar to the signs as identified in this document. Please also note that An AF

3000 for tower signage will also be requiredd to be submitted for approval during project execution.

3 Once the contractor installs line and antenna equipment, and performs all pre-tests, will Tyndall AFB personnel perform the connections to their equipment and complete commissioning?

N/A End user will make final connections and complete commissioning.

4 Document ER083035-J-BLD.9349 indicates a three leg tower. The RFP requests a four legged tower. Please confirm which is correct

Attachment 3 -

Appendix B -

ER083035-J-

BLD.9439

Three (3) legged tower is required. CE sent revised SOW to

CONS. This will be sent along with response to the Q&A's.

5 Is a geotechnical report available for this project? If Geotechnical report is not available please provide assumed foundation design for pricing purposes.

N/A Contractor is responsible for independent geotechnical investigation and design of foundations, any information regarding soil conditions is provided for information only and shall not be used as basis of design for the foundations.

Foundation design shall be prepared by geotechnical/structural engineer based upon soil conditions and calculated structural loads for new tower. Soil conditions generally consist of sandy soils with groundwater approximately 2-3 feet below existing grade. WEG tower

9350 visited during Jun 21 site visit had deep foundations approximately 40 feet deep, however soil conditions will likely be slightly different at this location. Soil boring for

9350 will be provided for information only, not as basis of design for new tower.

6 AF 813 indicates that soil disturbances must be handled IAW IRP guidelines, and that absent IRP guidance, excavated soil/sand may be sprea out on land adjacent to the excavation site. Can drill shaft spoils remain on site or do they need to be hauled away?

Attachment 3 -

Appendix B -

Completed AF Form

Spoils can be kept on site and used for minor grading, to include the 10 ft. gravel access drive to be placed around fence perimeter. If contractor desires to haul off base, IRP guidelines must be followed.

7 Attachment 2 - Appendix A section 5.2.1.5.1 states "A dissipative lightning protection system shall be provided, including strike termination devices, conductors, ground terminals, interconnecting conductors and other connectors and fittings required to provide a full coverage for antenna systems. Does the base have a specific system that is specified as the Basis of Design?

Attachment 2 -

Appendix A section

5.2.1.5.1

A specific system manufacturer is not required. However, any proposed system must be certified and installed in accordance with RFP requirements.

PROJECT ID AND LOCATION

RFI # QUESTIONS REF PARAGRAPH

DATE

ENTERED

DATE

SUBMITTED

RESPONSE

DATE

RESPONSE

8 Please provide the size of the shelter required or confirm that the exact size indicated in Attachment 3 - Appendix B, document Sub 011R

Equipment Shelter Drawings Towers 9349-9350 is required.

Attachment 2 -

Appendix A -

1.4/Attachment 3-

Appendix B, document Sub 011R

Equipment Shelter

Drawings Towers

9349-9350

Provide equipment shelter of approximate same size as the one identifeid in submittal 011R.

9 Is a standalone backup generator assembly required for the equipment shelter? Is a UPS required?

Attachment 2 -

Appendix A - 3.1.2.1

Not required.

Is the site operating on a COW (Cell on Wheels)? Attachment 2 -

Appendix A, section 1.1.1.1.4 states "Work to be completed without interruption of existing portable tower service".

Attachment 2 -

Appendix A, section

1.1.1.1.4

Existing tower will be used until after new tower is constructed. At that point, selective demolition of old tower and foundation blocks will be required as part of project closeout tasks.

11 Please consider extending the due date an additional 14 days from the issuance of RFI responses.

N/A The due date will remain 8 July 2021.

12 Please confirm that SSHO/QC/Site Superintendent can be dual or triple hatted.

N/A This is acceptable.