11. Antenna Tower Design_Materials_Foundation Design_Specifications_2022.12.21. Revised.pdf

Provide Antenna Support Tower Design/Materials

Foundation Designs For

FAA Radio Communication Facilities

SPECIFICATIONS

The contract specifications and drawings were originally created and planned to be contracted by Parson’s who is an FAA contractor and therefore reference both

Parson’s and some Parson’s terminology that may differ from that used by the

FAA. As this contract is now being executed by the FAA, please refer to the FAA contractual documents and FAA Contracting Officer for contractual language and requirements which are to take precedence over the Specification and drawings wherever differences exist.

December 21, 2022

FOR OFFICIAL USE ONLY

Public availability to be determined under 5 USC 552

Prepared by:

PARSONS T4

Central Region

104 Greystone

Kansas City, KS 66103

Parsons T4

TOWER/FOUNDATION SPECIFICATIONS – FOR OFFICIAL USE ONLY 1

TABLE OF CONTENTS

SECTION # DESCRIPTION PAGE

1. SUMMARY OF WORK

1.1. Summary

1.2. Acronyms and Definitions

1.3. Work Covered by the Subcontract Documents

1.4. Type of Contract

1.5. Work Phases

1.6. Work under Other Subcontracts

1.7. Contractor and Government Furnished Property

1.8. Use of Premises

1.9. Miscellaneous Provisions

1.10. Submittals Required for Notice to Proceed (NTP)

1.11. Payment and Performance Bonds

1.12. Post-Award Coordination Meeting

1.13. Material Delivery/Storage/ Handling

1.14. Protection of Existing Property

1.15. Project Schedule

2. PROJECT COORDINATION

2.1. Request for Information (RFI) Procedures

2.2. Field Instruction Procedures

2.3. Management Progress Meetings

2.4. Post-Award Coordination Meeting

3. SUBMITTAL PROCEDURES

3.1. Requirements for Submittal Schedule

3.2. Requirements for Warranties and Guarantees

3.3. Submittal Submission Requirements

3.4. Submittal Evaluation

4. QUALITY CONTROL

4.1. Contractor Quality Monitoring

4.2. Contractor Quality Inspection

5. PRODUCT REQUIREMENTS

TOWER/FOUNDATION SPECIFICATIONS – FOR OFFICIAL USE ONLY 2

5.1. Transportation and Handling

5.2. Storage

5.3. Lead-Free Materials

5.4. Materials

6. CLOSEOUT PROCEDURES

6.1. Final Submittal Requirements

6.2. Delivery Completion Certificate

7. TECHNICAL REQUIREMENTS

7.1. New Tower Structure

7.2. New Tower Foundation

7.3. Tower Specific Details

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The contract specifications and drawings were originally created and planned to be contracted by Parson’s who is an FAA contractor and therefore reference both

Parson’s and some Parson’s terminology that may differ from that used by the

FAA. As this contract is now being executed by the FAA, please refer to the FAA contractual documents and FAA Contracting Officer for contractual language and requirements which are to take precedence over the Specification and drawings wherever differences exist.

TOWER/FOUNDATION SPECIFICATIONS – FOR OFFICIAL USE ONLY 4

PROVIDE ANTENNA SUPPORT TOWER MATERIALS & FOUNDATION DESIGNS

1. SUMMARY OF WORK

Part 1 General

These Specifications, together with referenced standards and drawings included in the

Subcontract Documents, cover the Subcontract requirements for engineering design, fabrication, storage, and delivery of an antenna support tower. In addition, requirements for the engineering with design and construction documents for two types of support foundations for the tower to be constructed in the future at the sites as listed in this solicitation.

1.1. Summary

This section includes the following:

A. Acronyms and Definitions

B. Work Covered by the Subcontract Documents

C. Type of the Contract

D. Work Phases

E. Work Under other Subcontracts

F. Contractor or Government Furnished Property

G. Use of Premises

H. Miscellaneous Provisions

I. Submittals Required for Notice to Proceed

J. Payment and Performance Bonds

K. Post-Award Coordination Meeting

L. Material Delivery/Storage/Handling

M. Protection of Existing Property

N. Project Schedule

1.2. Acronyms and Definitions

See Part I – Section H Special Subcontract Requirements for other definitions relevant to these specifications.

Acronyms

GFE/GFP – Government Furnished Equipment/Property

NAS – National Airspace System

NTP – Notice to Proceed

OSHA – Occupational Safety and Health Administration

PF - Platform

PM – Project Manager

RE – Resident Engineer

RFI – Request for Information

SA – Subcontract Administrator

Definitions

• Contractor - Refers to PTSI Managed Services, Inc. (Parsons)

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• Project Manager (PM) - Refers to the Contractor’s representative as identified in the

Documents to monitor the performance of the Subcontractor and progress of engineering and manufacturing, and to identify, advise of, and assist in resolving any discrepancies that may arise.

• Provide -The word “provide” as it appears in Subcontract specifications and drawings means, “furnish.”

• Quality - Conformance to the requirements established by the contract specifications and drawings.

• Record Documents - Drawings, Specifications, Addenda, Change Orders and other

Modifications; also approved Shop Drawings, Product Data, Samples, and similar submittals required to be provided by Subcontractor.

• Record Drawings - Drawings submitted by Subcontractor to show the assembly of a particular structure or Work as actually completed under the Subcontract.

• Request for Information (RFI) - The method used by the Subcontractor and Contractor to document and transmit generated technical issues relating to design and manufacturing of the

Project.

• Resident Engineer (RE) - Contractor (Parsons) representative identified and assigned to monitor the delivery of the tower on site.

• Schedule of Values - The method used by the Subcontractor and Contractor to allocate values to various portions of the Work that, when approved by the Contractor, provides the basis for

Subcontractor’s application for payment.

• Subcontractor - The entity identified as such in the Form of Agreement of this Subcontract and all of its lower tier subcontractors.

• Submittal - A submittal is a Subcontractor's or manufacturer's drawing, brochure, sample, certificate, warranty, or other material which provides detail for construction and quality control of the permanent Work and includes deliverables such as schedules, product cut sheets, Work procedures, or product samples that are required under the terms of the

Subcontract.

1.3. Work Covered by the Subcontract Documents

1.3.1. Tower Size, Height, and Location: Refer to the attachments to this solicitation for a listing of sites with their corresponding tower size, height, location, design criteria group, and soil geotechnical information.

1.3.2. Summary of Work for All Towers

A. General

This specification, attachments and other referred standards/drawings/documents include the detailed requirements needed for the engineering design, fabrication, storage and delivery of tower and platform structure materials and for the engineering with designs, construction drawings and anchor bolts, associated hardware and template materials for two types of support foundations for a new four-sided, self-supporting antenna support tower. The new tower and its foundation will be constructed by others at the location indicated in the attachments for each tower included in this solicitation.

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The Subcontractor is responsible for accomplishing all items of work in accordance with the applicable drawings, specifications and conditions of the subcontract. Any additional labor, materials, equipment, and/or appurtenances not specifically detailed or specified, but required to complete the project, must be provided by the

Subcontractor as an integral part of the scope of work specified.

A minimum of 40% of the Work is to be performed by the Subcontractor’s own forces.

B. Major Items of Work for All Towers

Refer to the drawings attached to this solicitation for site specific information in addition to these specifications. The work to be accomplished by the subcontract includes, but are not limited to, the following:

1. Provide engineering calculations with design, fabrication, and assembly documents for a new, four sided, self-supported type antenna tower designed to meet or exceed the design parameters and requirements of these specifications and referenced standard drawings including:

• A work platform with stairway access (including a security fabric enclosure for the lowest stair run with a padlockable entrance gate at the stair bottom for additional prevention of unauthorized access to the platform). The work platform deck height above finished grade must be as noted in the list of sites included in this solicitation.

• All fall protection items as required by OSHA and other state governing agencies (guardrails, toe boards, etc.) and noted in these specifications.

• Provide and/or make provision for installation by others who will provide, the associated appurtenances itemized below and elsewhere in these specifications and attached drawings.

2. Fabricate the tower materials, store in an approved location and deliver all materials to the site construction location noted in these specifications within three weeks of receiving the notice to deliver.

3. Provide engineering calculations, designs, construction drawings and anchor bolts, associated hardware, and template materials for the specified foundation type (either a drilled pier deep type concrete or for a spread mat shallow type concrete foundation) to support the tower. Subcontractor must take into account incorporating the base reactions for the approved tower design and the site soils information contained in the geotechnical report attached to these specifications for each site included in this solicitation.

C. Tower Size Specific Work Items – Refer to 7.3 Tower Specific Details for each location and for what type antenna is located in each mount for design calculations.

1. Items for Twelve (12) Antenna Mount Platform Towers

a. Design, fabricate, and provide materials for a tower platform (PF) with 16 feet minimum sides (tower support structure may have different side widths as per

Subcontractor’s approved design) and with 12 antenna mounts having 8’ minimum separation between all.

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b. Fabricate and provide, four (4) lightning protection (LP) support masts with mounting materials and provisions made to the tower for their installation in the platform by others as detailed on the 12 & 16 Antenna PF Tower EES and

LP Details drawing (all other items on that drawing are provided by others).

c. Design, fabricate, and provide tower materials for twelve (12) new antenna mounts, with provisions made to the tower for their installation by others in the platform area as indicated in the Antenna Platform drawings and applicable attachments to these specifications.

d. Design, fabricate, and provide tower materials with mounting provisions to support two (2) total junction boxes (J-boxes) for cabling (J-boxes to be provided and installed by others), one located within the new work platform at the stair opening and one located at the tower base on the outer face of the new tower.

e. Design, fabricate, and provide tower materials for an overhead awning with back panel for others to install to the tower structure to shield maintenance workers from rain and ice when performing work within the base J-box.

f. Design, fabricate, and provide tower and the cable support structure materials

(cable support ladders and trays/trapezes with ice shields) as needed for sixteen (16) complete runs of ½” Heliax cables to be provided and installed by others from out of the bottom of the base J-box into the provided cable supports with ice shield over to center of the tower stair runs (passing under lowest stair run), then, continuing in provided cable support ladder vertically up tower between stair runs and into bottom of the PF J-box.

g. From there, design, fabricate, and provide tower and cable raceway materials for the PF as needed for others to provide and install twelve (12) LMR-400 cables out the sides of PF J-box down to PF deck raceways and on to the antennas via cableways that allow for cable maintenance from above the deck without trip hazards (raceway covers flush with top of walk area grating).

1.4. Type of Contract

Project will be constructed under a single prime subcontract.

1.5. Work Phases

The Work is estimated to be conducted in two (2) phases in the following order. The calendar days shown below total 120 days. Subcontractor is required to supply a schedule to include these milestones.

1.5.1. Phase 1: Tower Platform, Structure, and Foundation Design Engineering – 60 calendar days

1.5.2. Phase 2: Tower Materials Manufacturing – 60 calendar days

1.6. Work under Other Subcontracts

Coordinate fully with separate subcontractor for delivery of the completed tower, without interfering with or delaying work under either Subcontract.

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1.7. Contractor and Government Furnished Property

There is no known contractor or government furnished property for this solicitation.

1.8. Use of Premises

Delivery of the completed tower will be coordinated with the construction Subcontractor.

1.9. Miscellaneous Provisions

Project Specific Acronyms, Abbreviations, and References

A. Acronyms, Abbreviations:

EES – Earth Electrode System

FP – Fall Protection

LP – Lightning Protection

PF – Platform

RCAG – Remote Communications Air to Ground Facility

RTR – Radio Transmitter & Receiver

UIS – Unmanned Infrastructure Sustainment

B. References: The below is a partial list of references for the tower replacement effort. It is the responsibility of the Subcontractor to be familiar with all applicable industry and FAA requirements to complete the work effort.

ANSI/TIA – 222 (Current Version at time of RFO Release): Structural Standard for

Antenna Supporting Structures and Antennas.

FAA-STD-019 Current Version at time of award: Lightning and Surge Protection, Grounding, Bonding, and Shielding Requirements for Facilities and Electronic

Equipment

OSHA 1910.25 Standard: Occupational Safety and Health Standards, 1910 Subpart

D, Walking-Working Surfaces, Stairways

Part 2 Products [Not Used]

Part 3 Execution

1.10. Submittals Required for Notice to Proceed (NTP)

Start of project work cannot occur until the Subcontractor has been provided a written

Limited Notice to Proceed (LNTP) from the Subcontract Administrator (SA). A LNTP will be issued with the award notification from the SA.

Submittals required for NTP must be uploaded to the KSN Tower Manufacturing site setup for each tower included in this solicitation. Work cannot commence until approval is provided for the submittals listed in Section 1.10.1. Payment and Performance Bonds must be submitted to the SA.

1.10.1. Submittals required for NTP are discussed in this section as well as other sections of these specifications. Required submittals for NTP include:

A. Payment and Performance Bonds

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B. Schedule of Values

C. Detailed Overall Tower Manufacturing Schedule Based on Award Date

1.11. Payment and Performance Bonds

Bonds must comply with the requirements of Section H of the Subcontract, and be submitted on the bond forms provided by the SA. Payment and performance bond obligations must increase or decrease if the Subcontract amount changes.

1.12. Post-Award Coordination Meeting

The Subcontractor will be required to attend a post-award coordination conference call to review contract conditions, schedules, required submittals, RFI and change order procedures, contract closeout requirements, etc. and to establish contacts to be used during the subcontract. The date and time of the meeting will be determined after award of the subcontract.

1.13. Material Delivery/Storage/ Handling

An inspection will be made of the completed materials after fabrication at the

Subcontractor’s facility, prior to the components being packaged for storage or delivery.

The inspection will be to confirm item pieces are as noted on the materials list provided with the assembly drawings. The inspection will not include fabrication measurements.

The Subcontractor must provide all resources and equipment required by the Parsons’ representative to ensure there are no shortages of material parts/pieces upon arrival in the field upon delivery.

Following the inspection, materials must be stored and/or delivered as needed to arrive undamaged at the site in the manufacturer’s/supplier’s original containers or packing, with identifying labels intact and legible as required for field assembly and erection upon the foundation.

The Contractor PM will notify the Subcontractor when delivery to the project site is needed. Upon receipt of the delivery notice the Subcontractor will have three weeks to complete delivery of all materials to the site. The Subcontractor must coordinate delivery of materials with the Contractor’s site RE for coordination with the tower construction subcontractor whose personnel and equipment will offload delivered materials at the site.

Upon receipt of tower components, the Contractor’s site RE and tower construction subcontractor will complete an inventory. The material list provided with the assembly drawings must be updated (if applicable) and accurately reflect the tower components that were inspected and shipped as documented in the Bill of Lading/Material Packing

List provided by the delivery service to facilitate the inventory process. The Contractor’s

PM will notify the Tower Manufacturer of any missing components within seven (7) calendar days of receipt. It is critical that any missing components are received so as not to impact the construction schedule and the Contractor’s PM will provide the necessary milestone date within the construction schedule.

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1.14. Protection of Existing Property

The Subcontractor must take all precautions necessary to protect the existing facilities, equipment, buildings, vegetation, etc., during the delivery of the tower and associated material.

1.15. Project Schedule

Subcontractor must develop and submit to the Contractor a preliminary Progress

Schedule (Schedule) and preliminary Schedule of Values for approval within 15 working days from Subcontract award. The Subcontractor’s approved Schedule of Values and

Schedule are conditions for payment. The project schedule will be a discussion topic during the Post-Award Coordination Meeting.

2. PROJECT COORDINATION

This section specifies requirements for the different types of project coordination required during the execution of this Subcontract.

2.1. Request for Information (RFI) Procedures

2.1.1. Use of RFI Form. Subcontractor will utilize sample form attached to this section.

Subcontractor will accurately complete the form for any RFI and upload to the project

KSN Site. An example RFI form is shown at the end of this section and will be provided to the Subcontractor upon award.

2.1.2. RFIs identifying a technical question relating to the design of the project must be submitted to the PM. RFIs are to be uploaded to the project KSN Site. The submitted RFI must identify cost and schedule impact, include related drawings, sketches, and other clarifying documents attached, and specify recommended resolution if known. Allow seven (7) calendar days for the Contractor to review the RFI. PM will respond and transmit Contractor’s response to the RFI to the Subcontractor via the KSN Site.

2.1.3. If Subcontractor determines that the Contractor’s response to the RFI may impose a cost or schedule impact to the Work, Subcontractor must provide a cost and schedule impact and inform the PM and SA in writing within three (3) working days from receipt of response. Subcontractor is not to proceed with any Work that incurs additional cost or time on the basis of an RFI response. If no cost or schedule impact notification is received from Subcontractor within specified time, Subcontractor will be deemed to have accepted Contractor’s response and responsibility for Work described therein.

2.1.4. The RFI numbering system should begin with 001 and number sequentially thereafter.

The RFI Form will be provided to the successful bidder(s) following award.

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2.2. Field Instruction Procedures

2.2.1. Contractor may issue an order to the Subcontractor to perform a change in the work. This instruction may be in the form of revised plans or other information that provides the

Subcontractor with clarifications or additional information on what work is to be performed, these instructions will be provided in the form of a Field Instruction.

2.2.2. If Subcontractor determines that Contractor’s direction in the Field Instruction may impose a cost or a schedule impact on the Work, Subcontractor must inform the PM and

SA in writing within (14) calendar days from receipt of the field instruction. The notification must not include cost or schedule impacts. The cost or schedule impacts must be submitted separately only to the SA.

2.3. Management Progress Meetings

Meetings with Subcontractor will be held via conference call with date and time to be specified by the PM. The purpose of these meetings will be to conduct a joint review on project progress and subsequent submittals. The Contractor will provide an agenda of items to be reviewed during the meeting.

2.4. Post-Award Coordination Meeting

The Subcontractor will be required to attend a post-award coordination meeting as described in Section 1.12.

Part 3 Execution [Not Used]

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3. SUBMITTAL PROCEDURES

This section specifies requirements for providing submittals required under the Subcontract.

3.1. Requirements for Submittal Schedule

The Subcontractor is solely responsible for creating a Submittal Schedule identifying the items listed below in section 3.1.1.

3.1.1. Submittals: At minimum, the following submittals are required to be provided to the

Contractor for review and approval. All submittals should utilize the KSN Site provided.

A. Schedule of Values

B. Performance Bond

C. Detailed Overall Tower Manufacturing Schedule

D. Tower Design and Platform Calculations

E. Foundation Design Calculations

F. Foundation Construction/Reinforcement Drawings

G. Tower Assembly/Erection Drawings

H. Tower Fabrication/Shop Drawings

I. Tower Erection Procedures

J. Mill Certificates for Steel (Buy American Subcontract Requirement)

K. Warranty and Guarantee Documents

Note Regarding Proprietary Information: Information pertaining to items required for the submittals of this subcontract may be deemed proprietary by the Subcontractor. The

Foundation Construction/Reinforcement Drawings, Tower Assembly/Erection Drawings, and Tower Erection Procedures will be provided to the Davis Bacon Subcontractor for construction of the new antenna platform tower and corresponding foundation.

3.1.2. Coordination: The Subcontractor must coordinate the submittals as regards to the issues below:

A. The preparation and processing of submittals with performance of construction activities i.e.: fabrication, delivery, other submittals, and related activities that require sequential activity.

B. The Subcontractor must note any hierarchy should one submittal have an impact on another submittal.

C. Submittals that require concurrent review should be so indicated in correspondence transmittal email to the PM. Coordinate transmittal of different types of submittals for related parts of the Work so processing will not be delayed because of need to review submittals concurrently for coordination (action may be postponed on a submittal that requires coordination with other submittals until all related submittals are received).

3.2. Requirements for Warranties and Guarantees

Subcontractor must provide warranties/guarantees executed by the respective manufacturers, suppliers, and lower tier subcontractors for all installations as required in the Subcontract or as is customarily provided with the particular piece of equipment or

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system. All warranties are to be executed, in writing, for the benefit of the FAA.

Subcontractor must enforce all warranties for the benefit of the FAA if so directed by the

FAA or Contractor. In the event the Subcontractor's warranty has expired, the FAA may bring suit at its expense to enforce a subcontractor's, manufacturer's, or supplier's warranty. Subcontractor must provide complete information for each item as follows:

A. Product or work item.

B. Firm, with name of principal, address and telephone.

C. Scope.

D. Date of beginning of warranty.

E. Duration of warranty.

F. Proper procedure to evoke the warranty in case of failure.

G. Instances that might affect the validity of warranty.

H. Subcontractor name or responsible principal, address and telephone number.

I. Extended warranties normally provided by manufacturers that are beyond the warranty of construction must be specifically noted.

Part 2 Products [Not Used]

Part 3 Execution

3.3. Submittal Submission Requirements

One (1) electronic copy of all submittal data must be submitted for review and acceptance to the KSN Site. One (1) set will be marked and returned to the Subcontractor via the KSN

Site. The Subcontractor must furnish two reproducible sets of shop drawings as finally approved for on-site construction.

The Subcontractor must ensure that all submittals are made with adequate time for review and acceptance, including re-submittals, so as not to delay the job. Contractor will coordinate submittal review and return initial submittals within 14 calendar days and re-submittals within four (4) business days. Work must not commence prior to acceptance of required submittals by Contractor.

Subcontractor must check and approve submittals prior to delivery to the Contractor. The

Subcontractor is cautioned that the time period stipulated in this section does not include any allowance for re-submittal in cases where the PM or Parsons Engineer determines that the

Subcontractor’s approval of the submittal is not adequately justified. Any delay caused by inadequacies in the Subcontractor’s submittal will not entitle the Subcontractor to an extension of time or additional compensation. Lack of completeness or inadequate description will be justification for disapproval.

3.4. Submittal Evaluation

The Contractor will evaluate all submittals requiring responsive action. The Subcontractor remains responsible for complying with Subcontract requirements, referenced standards, and regulations. The Contractor evaluation will not relieve the Subcontractor of the

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responsibility for any error that may exist. Unsolicited submittals not required by the

Subcontract Documents will be returned with the notation that the submittal is not required by the Subcontract and that the Contractor has not reviewed and has no comment on the submittal. The Contractor evaluation will result in only one of four responses as follows:

A. Approved: Work covered by the submittal may proceed provided Subcontractor complies with requirements of the Contract Documents.

B. Approved as Noted: Work covered by the submittal may proceed contingent upon

Subcontractor acceptance of the corrections and/or notations and provided Subcontractor complies with the requirements of the Contract Documents.

C. Revise and Resubmit: Work covered by the submittal may not proceed until the submittal is revised in accordance with the corrections and/or notations and resubmitted.

D. Rejected: The submittal does not conform to the intent and requirements of the Contract

Documents and the Subcontractor must resubmit.

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4. QUALITY CONTROL

This section specifies requirements for quality control of the Work including, but not limited to, certificates of compliance, inspections and testing by the Subcontractor, and surveillance by the

Contractor.

4.1. Contractor Quality Monitoring

In addition to the Subcontractor’s in-house quality control program and record keeping for such things as certificates from steel sources used, structural weld inspections, etc. the

Contractor may perform such inspections, test, and monitoring as necessary to determine or verify Subcontractor’s compliance with Subcontract requirements either via its own personnel or third parties. Subcontractor must provide access to such facilities and assistance for Contractor monitoring as may be reasonably required and must ensure that all quality control records and places of Work are open and available to Contractor.

Contractor’s monitoring activities may consist of review, observation, inspection of

Subcontractor personnel, material, equipment, processes, fabrication, and storage including off-site inspections if applicable.

The PM will notify Subcontractor of any detected non-compliance with the requirements of this Section or other technical specification sections. Such notice, when delivered to

Subcontractor, must be deemed sufficient for the purpose of notification. Subcontractor must take immediate corrective action after receipt of a non-compliance notice and maintain a detailed record of every non-compliance and corrective action taken. The

Subcontractor must make no part of time lost due to non-compliance and/or stop orders the subject of a request for extension of time or compensation. Cost incurred by

Contractor or FAA to correct defective work will be deducted from the total amount due the Subcontractor.

4.2. Contractor Quality Inspection

To ensure quality, an inspection may be made of the completed materials after fabrication at the Subcontractor’s facility, prior to the components being packaged for storage or delivery. Subcontractor must inform the PM when tower assembly is completed and available for inspection. The inspection will be to confirm item pieces are as noted on the materials list provided with the assembly drawings. The inspection will not include fabrication measurements. The Subcontractor must provide all resources and equipment required by the Parsons’ representative to ensure there are no shortages of material parts/pieces upon arrival in the field upon delivery. Following the inspection, materials must be stored and/or delivered as needed to arrive undamaged at the site in the manufacturer’s/supplier’s original containers or packing, with identifying labels intact and legible as required for field assembly and erection upon the foundation.

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5. PRODUCT REQUIREMENTS

This section covers Subcontractor’s requirements regarding materials and equipment that are incorporated into the Work.

5.1. Transportation and Handling

Products must be delivered in undamaged condition, in manufacturer's original containers or packing, with identifying labels intact and legible. Shipments must be inspected to ensure compliance with requirements of the Subcontract Documents and approved submittals. Ensure that products are properly protected and undamaged immediately on delivery. An inventory of items contained in each shipping package must be included with delivery of products (Bill of Lading/Material Packing List). Provide equipment and personnel to handle products by methods to prevent soiling or damage to products or packaging.

5.2. Storage

Products must be stored in accordance with manufacturer's instructions, with seals and labels intact and legible. Products subject to damage by the elements must be stored in weather-tight enclosures. Temperature and humidity must be maintained within the ranges required by the manufacturer's instructions. Fabricated products must be stored above the ground, on blocking or skids to prevent soiling or staining. Products that are subject to deterioration must be covered with impervious sheet coverings and adequate ventilation must be provided to avoid condensation.

5.3. Lead-Free Materials

The Subcontractor must provide to the SA, a signed statement stating that to the best of its knowledge, no lead-containing materials were used during the fabrication of this project.

5.4. Materials

All materials provided for the work must be new and American made wherever possible.

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6. CLOSEOUT PROCEDURES

This section sets out the requirements for Subcontract closeout at completion of the Work.

6.1. Final Submittal Requirements

Prior to final acceptance, the Subcontractor must assemble all appropriate warranties, product information, certifications, final versions of any design calculations, fabrication and assembly documents/drawings if revised following initial approvals as applicable.

6.2. Delivery Completion Certificate

When Subcontractor considers the Work completed, Subcontractor must submit a signed certification in the form provided by the SA certifying the following:

A. Subcontract Documents have been reviewed and Work inspected for compliance with

Subcontract and accepted by the Contractor.

B. All materials used in the project are lead free.

C. Warranties and guarantees have been prepared and found acceptable by the SA.

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7. TECHNICAL REQUIREMENTS

The following specifications, attachments and referenced standards govern the technical requirements for the Work included in this contract. In addition to these specifications, the contract drawings include one S001 drawing that conveys standards for use in the design and construction of new FAA communication towers. Where any recognized standards of design or construction are referred in either these specifications or the S001 drawing (ANSI/TIA 222, ASTM, AISC, etc.) the latest edition of those standards at the time of bidding the work are to be in effect and used for the work included in the project.

The information contained in the Technical Requirements Section of these specifications clarify, revise or add to some of the requirements contained in those standards. In all cases of conflicts for an item between the standards, these specifications, drawings and all other attachments, the more stringent requirement will govern for the Work of this project.

7.1. New Tower Structure

The Subcontractor must provide all effort and materials required for the design and fabrication of the new tower in conformance with these specifications and other contract documents. All structural steel components used for the tower must be of the tensile strength material indicated in the approved design submittals.

7.1.1. General: The new tower platform size and layout requirement minimums for the four sizes (12, 16, 23, & 32 antenna mounts) are as indicated in the Antenna Platform drawings for this Subcontract. The platform support leg structure footprint and/or elevation shape may be determined by the Subcontractor. The Subcontractor could choose to construct a design for a continuous shape from base to top of equal overall dimensions as the platform, a continuous shape of smaller dimensions with platform edges cantilevered/overhanging, one with a pyramid shape with continuous slope from a wider base up to the platform, etc.

7.1.2. Tower and Appurtenance Features: The Subcontract documents include a drawing that depicts the tower platform minimum size and layout required and indicates the approximate locations for antenna mounts, lightning protection (LP) support masts (LP masts and mounting details for it depicted in EES & LP Details drawing) and other appurtenances along with additional drawings that detail standards governing design and construction. Refer the attachments to these specifications for layouts of the four platform sizes that indicate which type antennas are located in the various mounts for use in preparing the platform and tower support structure calculations. The new tower must include stairway access to the antenna platform for use by maintenance workers designed per the requirements listed below and include a security fabric enclosure for the lowest stair run with padlockable entrance gate at the stair bottom for additional prevention of unauthorized access to the platform. The stairway will be located within the structure

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central interior with stair landings provided that meet the same OSHA requirement as for the work platform. The new tower antenna cabling J-boxes are to be located within the platform area over the cables run up the tower, in between the stair runs, supported from either stair guardrails or a separate, dedicated support structure using material components sized at least as large as those used for the guardrails (J-boxes to be provided by others, support materials by the Subcontractor with other tower materials).

A. Tower Platform to Support Structure Configuration: The tower platform and top of the support structure must be designed and fabricated such that the entire platform area may be preassembled as one complete assembly and staged for lifting and erection upon the top of the support structure as a separate section. Acceptable methods are via either top of support structure includes location of a leg splice in the area of from one to three feet below the platform level or via top of support structure includes horizontal members that tie legs together and directly support the upper platform section upon them. Configurations with tops of support structure legs integrally nested within the platform framing will not be accepted.

B. Tower and Platform Antenna Cabling Provisions: The platform deck supports and grating must be configured to include cable raceways within the deck located from directly in line with the cable junction box(es) sides out to the perimeter rails on both sides of the platform and from the perimeter rails in to each of the inner mounts with no bends in their runs. Raceways must include removable top cover plates that do not create trip hazards with the grating walk surface and end 4”-6” from platform toeboards at sides and at inner mounts to allow for cable exit bends. Covers must also not flex under 250# load (min.) applied to center. Raceway minimum widths from J-Box(es) out to platform rails to each side must be 6” (min.) for 12 and 16 antenna mount towers or 8” (min.) for 23 and 32 antenna mount towers (see NOTE below). Raceway width from perimeter rails to inner mounts may be 4” wide.

Platform perimeter midrails must include holes in “down” legs for 3/8” dia. bolts for others to use for installing perimeter raceways. A minimum of one bolt hole must be provided at three foot (max.) intervals beginning at one foot in from corners. Tower materials must include a 10’ section of cable bridge (with ice shield and trapeze hangers) and provisions for the assembly to be mounted from under the bottom of base J-Box(es) over to the tower center passing under the lowest stair run. Materials must also include a cable ladder with provisions to install it centered within the tower between stair runs from the base up to the platform stair opening side where J-

Box(es) are to be installed.

NOTE:

Cable raceways from J-Box(es) may be of 4” minimum width if fabricated with a lower trough level under the grating bottom that results in at least a two inch depth of cableway under the cover plate.

C. Grating: In addition to requirements for grating noted elsewhere, where multiple sections of grating are used within an area, such must be fabricated so that, after galvanizing, deck sections are fit snug together within their areas to result in total gaps less than 7/8” across the area in either direction. Galvanized or stainless steel

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fasteners that use J-bolts to attach to framing flanges rather than drilling must be provided for installing grating.

D. Guardrails: Structural members used for the guardrails of platforms, stairs, and landings must be oriented to where “flat” surfaces are on the tops and towards workers. Any/all structural angles, channels, etc. used for the guardrails MAY NOT be oriented with a leg or flange in the “up” or “in” toward the worker side of the guarded area.

E. Toeboards: If materials used for toeboards are of flat plate rather than structural angles, minimum thickness of plates must be 3/8”.

F. Antenna Mounts: New outer and inner antenna mounts must be provided with the tower, configured and located as indicated on the platform drawing with all tops at 60 inches (5’) above the deck walking surface and mount pipes plumb. Tower platform perimeter framing and guardrail components must be designed to withstand all required service loads transferred from the outer antenna mounts without use of stiffener bracing components that extend into the platform working area side of the guardrail. The floor framing in the area under the inner mounts must be designed to withstand service loads resulting from the inner mounts with a minimal amount of flexing. Inner mounts located within the main cable pathways from the J-Box(es) out to PF sides must be mounted to result in 1.5-2 inch clearance under the mount plates to allow for cables to pass under those mounts.

NOTE: In addition, the floor framing components and inner mounts as attached to them must be required to withstand application of a 100-pound lateral load applied to the top of the mount pipe in any direction with total flex resulting in no more than one half inch (max.) lateral movement when measured at the top of the pipe.

G. Base Junction Box Awning: A rain and ice shield awning with back shield must be provided with the tower to protect workers while performing maintenance within the

J-boxes located at the tower base. Refer to the Site Electrical Work Details drawing for more configuration information. Framing for J-box supports and the shield panels must be mounted directly to the tower structure components for support with mounting bolt holes predrilled during fabrication of the tower components (no field drilling needed to mount awning components). Top awning material must be of puncture resistant HSS corrugated sheet metal (tower drawings are to note what material is used for approval) or consist of two pieces with top being of cabling type ice shield/bridge material over a lower of low/mild strength corrugated sheet metal.

NOTE: Awning minimum width must be 60” for the 12 and 16 antenna sized platform towers and 99” for the 23 and 32 antenna sized towers.

H. Tower Stairs: The new tower design must include an OSHA compliant stairway access from the ground level, up the tower, and into the work platform area per the design requirements listed below. Stairways, landings and the new communication cabling must be located within the structure footprint so that most, if not all, cabling and mounting hardware items may be maintained by workers from the stairs.

Requirements include:

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1. Stairs must be designed and fabricated similar to the other tower structural items to require field bolting only of components for installation (shop welding will be allowed for subassemblies prior to hot-dip galvanizing but, no field welding will be allowed).

2. Stair and landing walk tread areas must be comprised of open grating material, 30 inches wide (min.) between the side supports and designed to withstand a 500-pound live load applied to the center of the tread with a minimum factor of safety of 2.

3. Stair and landing supporting structures designed to support at least two (2) 500 pound live loads, imposed with a two foot horizontal separation along the direction and upon the center of each stair run or landing with a minimum factor of safety of 2.

4. Must include OSHA compliant guardrails on both sides with 30 inches (min.)

clearance width and with one handrail located on either side that may encroach 3 inches (max.) into stair width space.

5. Steps must be OSHA compliant for tread depth, height and uniform/same within each run, landing to landing.

6. The entrance into the platform work area at the top must include guardrails and a spring loaded entrance gate, opening into the work area direction only.

7. The bottom of the lowest stair run must be integrally supported structurally to the tower (either via connections to other tower structural members or to the tower foundation). For pier designs, stair pier to be 4’ (four feet) diameter (min.), twice local frost depth (min.) and be located so that stairs land with a minimum of half the pier area away from the tower center remains clear for stair approach.

8. The lowest run, from finish grade to support framing above at the first landing level, must be enclosed with galvanized 9-11 GA expanded metal fabric with hinged door of same material having padlock provision at stair entrance for security against unauthorized access. Door and security materials must be configured to allow for fully opening the door without interfering with tower members (center opening, double doors are allowed). Door to have tamper-proof hinges and mounting.

9. All materials used must be hot-dipped galvanized after fabrication as done for the tower structure.

10. After galvanization, stair runs must be fully assembled as units from landing to landing for field delivery (stringers and step treads, minimum, side rails may be delivered for field assembly/bolting if they are not welded to stringers). Prior to delivery, dimensions must be verified for proper fit of the assembled stair runs to their bottom and upper tower framing connections at landings for the units.

7.1.3. Tower Submittals: Subcontractor must prepare and transmit submittals either for approval or for information to be placed in the record as noted within the “Materials” and

“Submittals” specification Sections for the new tower work items noted below:

A. Calculations and Certifications of Tower Structure Design: Submit calculations used for the design of the tower and platform with a statement certifying the design complies with the requirements of this specification and the applicable codes for the

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specific location and type structure, bearing the current professional seal of the design engineer of record. The calculations must include a summary listing the maximum reaction forces imposed by the tower that must be resisted by the foundation resulting from all load combinations required for consideration by ANSI/TIA 222 and the design standards contained in the S001 contract drawing. Tower location determines which Design Criteria Group loadings must be considered for the design. Submit structural software calculations output in a form that does not require the software to review. Design calculations for the platform may be performed with any software commercially available to the public and submitted either separately or with the tower calculations, but must consider the same wind and ice load combinations required for the tower in addition to the required deck loads. The tower structure calculations must be performed using Tower Numerics, tnxTower® software, manually entering the platform loads information resulting from the platform design analysis where/as appropriate. Submit the tower tnxTower digital model files for review and the file record. Tower foundation design follows structure design and approval and may be performed via any commercially available design software.

B. Tower Assembly/Erection Drawings: Submit drawings to scale that indicate the tower structural components (legs, bracing, connection plates, welding and bolting information, etc.) and that include clear depictions of the locations and components to be used for all items noted above and how they will be incorporated into the structure.

Details must include enough information to ensure compliance with critical clearance and other dimension requirements pertaining to worker maintenance and fall protection safety issues. The assembly/erection drawing(s) must as a minimum include isometric views of each of the tower sections as will be fabricated (sections are areas between each leg joint/splice) at least one isometric view of the completed tower and platform and may be included with the assembly/erection drawings.

NOTE: Approval of drawings and final acceptance and payment for materials does not relieve Subcontractor from responsibility for resolving any design or fabrication issues that may become apparent later during the field construction assembly work at no additional cost at that time (under warranty). No field drilling, welding, or torch cutting of structural components will be allowed for correction of fabrication, “fit up,” or other errors without express approval from the tower design engineer. Field modifications may be performed to allow for assembly to proceed, however, remaking of components and replacement may be required as needed if field modifications do not get approved for the permanent work.

C. Assembly & Erection Procedures: If the tower assembly and erection must follow specific procedures unusual to normal industry practice to result in a structure compliant with all requirements, submit written instructions to be used for field assembly and erection including the chronological sequence/schedule of the required activities, the number of personnel that will need to be on the tower and on the ground, the type(s) of major equipment and safety procedures that should be used, etc.

D. Fabrication/Shop Drawings: Submit the drawings as used for manufacturing of the individual components to the Contractor for future FAA maintenance needs.

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E. Mill Certificates: Submit mill certificates for the material used for the tower, indicating in the submission the country of origin and what structural steel component(s) for the tower were fabricated from the material represented by each certificate.

F. Welding Procedures/Welder Certifications: All welds used for the tower must be limited to shop fabrication for the attachment of connection plates to…