7_SCHO00104_Final Design Analysis.pdf

CUI

CUI

FINAL DESIGN ANALYSIS

Relay Ground Station - South (RGS-S)

SCHRIEVER SFB, COLORADO

MAY 2025

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Relay Ground Station – South (RGS-S) Schriever SFB, CO Final RFP Phase

Table of Contents Page TC-1

DESIGN ANALYSIS

FOR

RELAY GROUND STATION – SOUTH (RGS-S)

SCHIEVER SFB, COLORADO

TABLE OF CONTENTS

PART 1 - GENERAL PROJECT INFORMATION

1 PURPOSE

2 AUTHORIZATION

3 PROJECT DESCRIPTION

3.1 PRIMARY FACILITIES / SITE LOCATION

3.1.1 Major Components

3.1.2 Ground Terminal Equipment

3.1.3 Communications and Networking Equipment

3.1.4 Facilities and Infrastructure

3.1.5 Command, Control, Communications, Computers, Intelligence/Information Technology

3.2 ROLES AND RESPONSIBILITY ASSUMPTIONS

3.3 DESIGN CHARRETTE

4 APPLICABLE CRITERIA

4.1 DESIGN CRITERIA

4.1.1 Codes and Criteria

4.1.2 Sustainability

4.1.3 Uptime Institute

5 ECONOMIC SUMMARY

PART 2 – DESIGN REQUIREMENTS AND PROVISIONS

1 SITE/CIVIL

1.1 REFERENCES

1.2 DEMOLITION

1.2.1 Disposal of Materials

1.3 GRADING

1.4 SITE DESIGN

1.5 SHELTERS

1.5.1 GTE Shelter and CNE Shelter

1.5.2 GTE/CNE contractor Equipment Storage Shelter Pads

1.5.3 GTE/CNE contractor Storage Shelter Pad

1.6 PAVEMENT DESIGN

1.7 DRAINAGE

1.7.1 Design Storm Return Period

1.8 EROSION AND SEDIMENT CONTROL

1.8.1 Temporary Erosion and Sediment Controls

1.9 SPECIFICATIONS

2 WATER SUPPLY AND WASTEWATER COLLECTION

2.1 DESIGN REFERENCES

2.2 GENERAL

2.3 DOMESTIC WATER

Table of Contents Page TC-2

2.4 FIRE PROTECTION WATER

2.5 SANITARY WASTEWATER

2.6 INDUSTRIAL WASTEWATER

3 STRUCTURAL

3.1 SCOPE OF WORK

3.2 DESIGN CRITERIA

3.2.1 References

3.3 DESIGN LOADING AND MATERIAL PROPERTIES

3.3.1 Risk Category

3.3.2 Design Loads

3.3.3 Material Properties

3.3.4 Foundation Design Parameters

3.4 PROJECT DESCRIPTION AND STRUCTURAL SYSTEM

3.4.1 Proposed Structural System

3.4.2 Superstructure

3.4.3 Sub-Structure

3.5 DESIGN OF STRUCTURAL STEEL CONNECTIONS

3.5.1 Simple Connections

3.6 DESIGN LOAD PATHS

3.6.1 Gravity Forces Resisting System (GFRS)

3.6.2 Lateral Forces Resisting System (LFRS)

4 MECHANICAL

4.1 REFERENCES

4.2 GENERAL

4.3 DESIGN REQUIREMENTS

4.3.1 General Design Criteria

4.3.2 Design Temperatures

4.3.3 Occupancy

4.3.4 Internal Heat

4.3.5 Heating, Ventilation and Air Conditioning Load Calculations

4.4 HVAC SYSTEMS

4.4.1 Heating and Cooling Equipment

4.4.2 Environmental Control

4.5 UTILITY REQUIREMENTS

4.6 ENERGY CONSERVATION

4.7 PLUMBING SYSTEM REQUIREMENTS

4.7.1 General Requirements

5 FUELS MECHANICAL

5.1 DESIGN REFERENCES

5.2 FUELING SYSTEM

5.2.1 General

5.2.2 Offload Equipment

5.2.3 Tank/Generator Area

5.2.4 Fuel Polishing

5.2.5 Controls Philosophy

5.3 SPECIFICATION OUTLINE

5.4 20,000 GALLON BULK TANK PRODUCT DATA SHEET EXAMPLE

5.5 500 GALLON DAY TANK PRODUCT DATA SHEET EXAMPLE

5.6 500 KW GENERATOR PRODUCT DATA SHEET EXAMPLE

6 ELECTRICAL

6.1 DESIGN CRITERIA

6.1.1 Reference Publications

Table of Contents Page TC-3

6.2 SCOPE

6.2.1 Design Systems

6.3 USACE NOTATIONAL EXTERIOR ELECTRICAL WORK

6.3.1 Power Distribution

6.3.2 Grounding and Lightning Protection

6.3.3 Exterior Telecommunications

6.4 CONTRACTORS EXTERIOR AND INTERIOR ELECTRICAL WORK

6.4.1 Backup Power

6.4.2 Interior and Exterior Lighting

6.4.3 Grounding System

6.4.4 Lightning Protection System

6.4.5 Antennas/Ringwalls

6.4.6 Shelters

6.4.7 Environmental Control Units

6.4.8 Equipment Racks and Enclosures

6.4.9 Electronic Security Systems (ESS)

6.4.10 Fire Alarm

7 FUELS ELECTRICAL

7.1 DESIGN CRITERIA

7.2 FUELS ELECTRICAL - SCOPE

7.2.1 Fuels Power

7.2.2 Fuels Area Lighting

7.2.3 Fuels Static Grounding

7.2.4 FUEL OFFLOAD, CLEANING, AND STORAGE SYSTEMS

APPENDICES

A – STRUCTURAL CALCULATIONS

Schriever SFB, CO Draft RFP Phase

Design Analysis

PART 1 - GENERAL PROJECT INFORMATION

1 PURPOSE

This Design Analysis (DA) and the accompanied drawings is for the Space Force Sensing Group at Schriever Space Force Base (SFB). Purpose of the project is to provide the Space Force with the facilities and infrastructure (F&I) needed to support Relay Ground Station – South (RGS-S), based on established stakeholder requirements.

RGS-S is sponsored by the United States Space Force (USSF) and will provide essential support for the Space Systems Command (SSC) mission. RGS-S is the next evolution in our nation’s Overhead Persistent Infrared (OPIR) satellite ground stations. RGS-S will enable the SSC Next Generation SBIRS Ground System to remotely operate SBIRS Geosynchronous (GEO) space vehicles, and Next Generation space vehicle.

This design analysis and accompanying appendices provide the working Basis of Design (BOD) for the project. Projects will be designed and constructed under a design-build contract. USACE’s role is to develop a design-build (D-B) Request for Proposal (RFP) with concept level (35% design) bridging documents. This DA will not be a part of the RFP but will be provided to the contractor after award.

2 AUTHORIZATION

Project has signed $50M support agreement between USACE and Space Force. Requirements documents, including Design Document and RFP development for similar system are available. Antenna System, including support work by others, must be constructed and commissioned NLT Sept 2027.

The RGS-S site is located at Schriever SFB outside of Colorado Springs, CO. The site is situated inside the restricted area.

RGS-S is a Research, Development, Test, and Evaluation (RDT&E) appropriations funded project, which includes design, procurement, development, integration, and testing of advanced technology hardware and software systems capable of uplink and downlink communications with Legacy SBIRS GEO, Next Generation GEO (NGG), and Next Generation Polar (NGP) space vehicles. This RDT&E funded project will be a lights-out facility, located at Schriever Space Force Base in Colorado. Site improvements will be necessary to support system equipment.

Facilities and infrastructure will be designed, procured, installed, and commissioned by the contractor via the RDT&E funded contract. The facilities and infrastructure will primarily consist of concrete pads, antenna pedestal foundations, site utilities, pathways and cabling, and shelters.

3 PROJECT DESCRIPTION

3.1 PRIMARY FACILITIES / SITE LOCATION

The RGS-S site is located at Schriever SFB outside of Colorado Springs, CO. The site area was approved by the Schriever SFB Facility Board on 06 June 2023. The site is situated inside the restricted area, between the west RA fence line and building 712, south of Kepler Avenue. Access to this area would be via Kepler Road.

Since RGS-S is a relay station, no data processing functionality will be performed on site.

The RGS Facilities/Site will have the following requirements:

1. Designed to meet a 10-year lifespan.

2. Operate continuously 24 hours/day, 7 days a week, 365 days per year.

3. Facilities will be normally unoccupied.

4. Site will be designed to meet PL-3 requirements IAW DAFI31-101.

Primary facilities for this project are as follows:

3.1.1 Major Components

The facility will be comprised of four major components that are needed to provide connectivity between the space vehicles and end users. These components are:

1. Ground Terminal Equipment (GTE)

2. Communications and Networking Equipment (CNE)

3. Facilities and Infrastructure (F&I)

4. Command, Control, Communications, Computers, Intelligence/Information

Technology (C4I/IT)

RGS-S is a lights-out Ground Entry Point (GEP) and will be operated remotely by Future Operationally Resilient Ground Evolution (FORGE) - Command & Control (C2) and SBIRS-C2.

3.1.2 Ground Terminal Equipment

GTE will be designed, procured, developed, integrated, and tested by the GTE/CNE contractor via RDT&E-funded contract with NIWC Pacific.

GTE will provide the capability to receive, transmit, and SBIRS GEO, NGG, and NGP space vehicles. GTE will primarily consist of 13.5-meter antennas, radomes, transmitters, receivers, motor assemblies, and other associated radio frequency (RF) components. GTE will be capable of receiving communication downlinks from space vehicles in S and K bands; the RF signal will be down-converted to baseband, demodulated, decoded, and bit-synchronized. GTE will also be capable of accepting remote commands from CNE; commands will be modulated, transmission security (TRANSEC) will be applied, then up-converted to RF, and transmitted to space vehicles in S, L, and/or Q frequency bands.

RGS-S will include three (3) sets of GTE housed in environmentally-controlled radomes.

3.1.3 Communications and Networking Equipment

CNE will be designed, procured, developed, integrated, and commissioned by the GTE/CNE contractor via RDT&E-funded contract with NIWC Pacific.

MeshONE-T will provide communications and data traffic from CNE to the RGS-S external interfaces (end users) for data processing. The GTE/CNE contractor will be responsible for the CNE between the GTE and the meshONE-T equipment. Defensive Cyber Operations for Space (DCO-S) team will provide equipment for cyber services for the CNE. `

CNE will provide the interface between GTE and external interfaces. CNE will primarily consist of routers, modems, firewalls, computers, cryptos, and other associated networking equipment and will be housed in its own environmentally controlled CNE shelter. This equipment will provide communications services, cyber services, networking services, encryption, fault detection, local configuration, administrative functions, and timing.

3.1.4 Facilities and Infrastructure

F&I will be designed, procured, installed, and commissioned by the F&I contractor via RDT&E-funded contract.

F&I will support GTE and CNE, and C4I/IT. F&I will primarily consist of concrete pads, antenna pedestal foundations, radome ringwalls, site utilities, backup generators, fuel tanks, pathways and cabling, and shelters. RGS-S F&I must comply with United Facilities Criteria (UFC) 1-200-01 (DoD Building Code).

3.1.5 Command, Control, Communications, Computers, Intelligence/Information Technology

C4I/IT will be designed, procured, installed, and commissioned by NIWC Pacific.

C4I/IT will consist of communication network infrastructure from on-site entrance location, network equipment, telephony, and security and protection systems (e.g., ESS, FRCS, local transport).

3.2 ROLES AND RESPONSIBILITY ASSUMPTIONS

This project will require support from the F&I contractor for site planning, site design, site preparation, and site installation as well as support from the GTE/CNE contractor for GTE and CNE development and installation.

The F&I contractor-provided facilities and infrastructure will primarily consist of concrete pads, site utilities, generators, outside plant pathways and cabling, antenna ringwalls, and select shelters for F&I contractor-provided property and equipment. The GTE/CNE contractor will be expected to provide separate shelters – GTE and CNE shelters for GTE and CNE equipment respectively and additional storage shelters as required.

NIWC Pacific and SSC will work with the GTE/CNE contractor to coordinate activities with the F&I contractor and provide support as needed.

NIWC Pacific will design and install C4I/IT systems consisting of ESS, networks, and telephony.

The Government will be responsible for overseeing the environmental work required and obtaining environmental approvals.

3.3 DESIGN CHARRETTE

A design charrette/site visit was conducted for the Schriever, RGS-S September 2024.

4 APPLICABLE CRITERIA

4.1 DESIGN CRITERIA

4.1.1 Codes and Criteria

Standard design criteria will be utilized as applicable:

UFC 1-200-01 DoD Building Code (Oct 2019, Change 01) UFC 1-201-01 Non-Permanent DOD Facilities in Support of Military Operations UFC 3-580-01 Telecommunications Interior Infrastructure Planning and Design UFC 3-600-01 Fire Protection Engineering for Facilities (Aug 2016, Change 06) UFC 4-021-02 Electronic Security Systems MIL-STD-188 Haul/Tactical -124B Grounding, Bonding, and Shielding for Common

Long Haul/Tactical -124B Communication Systems Including Ground based Communications- Electronics Facilities and Equipment

ANSI/IEEE-C2 National Electrical Safety Code NFPA 70 National Electrical Code DoD NFPA 101 Life Safety Code NFPA 780 Standard for the Installation of Protective Systems MIL-HDBK Grounding, Bonding, and Shielding for Electronic Equipment and-419A

Facilities TIA-568 Telecommunications Pathways and Spaces DoDM 5200.01 Dod Information Security Program: Protection of Classified Information.

Volume 3 CNSSAM RED/BLACK Installation GuideTEMPEST/1-3 MCO 5530 14A Marine Corps Physical Security for Facilities DAFI31-101 Department of the Air Force Instruction 31-101, Integrated Defense (ID)

See the individual design discipline sections of this DA for the applicable general and industry design criteria used in this design.

4.1.2 Sustainability

UFC 1-200-02 paragraph 1-4 states that this UFC does not apply as these shelters are “unoccupied buildings, which are occupied one hour or less per person per day on average; AND have total building energy consumption (including receptacle and process loads) from all sources less than 12.7 kBTU / SF/ Yr.; AND have annual average water consumption (including process water) of less than 2 gallons per day for the building.”

4.1.3 Uptime Institute

RGS-S will be designed to meet the Tier III concurrent maintainable requirements as defined by the Uptime Institute or approved equal for all mission required continuous operations.

5 ECONOMIC SUMMARY

A Life Cycle Cost Analysis (LCCA) will be done on all shelter features that exceed UFC 01-200-02 or other Air Force design guidance but has yet to be determined which will be done by USACE or the D-B contractor.

A Value Engineering (VE) study will be conducted when the 35% design is submitted.

PART 2 – DESIGN REQUIREMENTS AND

PROVISIONS

1 SITE/CIVIL

1.1 REFERENCES

The following references were used in preparing the grading, paving, drainage, and fencing design:

Unified Facilities Criteria (UFC)

UFC 3-201-01 Civil Engineering (Dec 2022)

UFC 3-210-10 Low Impact Development (Aug 2023)

UFC 3-230-01 Water Storage And Distribution With Change 3 (Jul 2021)

UFC 3-250-01 Pavement Design for Roads and Parking Areas (Nov 2016)

UFC 3-250-04 Standard Practice for Concrete Pavements (Jan 2024)

UFC 3-250-09FA Aggregate Surfaced Roads and Airfields (Jan 2004)

UFC 3-460-01 Design: Petroleum Fuel Facilities With Change 3 (Jun 2023)

United States Space Force

Schriever Installation Facility Standard (IFS) (2019)

Department of Transportation

Colorado Department of Transportation (CDOT) Design Manual

Engineer Manuals (EM)

110-2-20-1 Conduits, Culverts and Pipes (31 Oct 97)

Federal Highway Administration

HEC No 22 Urban Drainage Design Manual (Aug 13)

HDS No. 5 Hydraulic Design of Highway Culverts (2012)

MUTCD Manual on Uniform Traffic Control Devices, 11th Edition (Dec 2023)

American Association of State Highway and Transportation Officials (AASHTO)

A Policy on Geometric Design of Highways and Streets (2018)

Army Corps of Engineers

Omaha District Design Guide, 2019

Military Surface Deployment and Distribution Command Transportation Engineering Agency (SDDCTEA)

Pamphlet 55-17 Better Military Traffic Engineering (2011)

National Fire Protection Association (NFPA)

NPFA 30 Flammable and Combustible Liquids Code (2024)

Clarifications

1.2 DEMOLITION

Demolition will consist of earthwork for leveling the site.

1.2.1 Disposal of Materials

Federal mandates require a minimum of 60% non-hazardous construction and demolition waste material to be diverted from landfills. See Sustainability section for more information.

1.3 GRADING

Excavation, grading and leveling is required throughout the site at antenna locations and surrounding areas. The grading and leveling plan will need to be coordinated with the GTE/CNE contractor as the ground elevation may affect GTE location, construction, blockage, and visibility.

All areas requiring any specific terrain adjustments should be completed before trenching and pathways.

The entire site shall be as level as possible. A level plane area extending 50’ outside the radome drip lines of each antenna shall be prioritized.

Site layout and foundations shall be designed to accommodate a 100-ton crane, a 25-ton crane, and a tractor trailer with flat-bed truck simultaneously during construction.

1.4 SITE DESIGN

The following structures/items shall be within the D-B contract scope unless called out otherwise:

o 3 - 68’ rigid radome diameter o 50’ area around radome drip lines for access o 30’ clear area extending from the perimeter fence outwards for patrol access as well as Closed-Circuit Television (CCTV) monitoring o A single 20’ wide service road for vehicular access throughout the site, including shelters and antennas.

o GTE shelter, 27 x 10 ft. (GTE/CNE contractor provided) o CNE shelter, 27 x 10 ft. (GTE/CNE contractor provided) o Site Facilities Communications Shelter o Site Facilities Electrical Shelter for switchgear and related equipment o Three 500 kW generators o 20,000-gallon bulk diesel tank o Three 500-gallon diesel day tanks o 300-gallon diesel fuel overflow day tank o Two 8 x 4.5 ft. antenna reflector assembly pads o Laydown/Staging Area

1.5 SHELTERS

1.5.1 GTE Shelter and CNE Shelter

GTE and CNE Shelter should be placed side-by-side with a spacing 0f 10-20 feet between them.

Both shelters shall face the same direction. Both shelters shall be on a concrete slab 10’W x 27L’ x 10’H, 42,000 pounds and ECU. Recommended size is 13ft x 37ft with a minimum 3,500 PSI rating. The bolt down pattern of the shelter can be adjusted to spread the load as required.

1.5.2 GTE/CNE contractor Equipment Storage Shelter Pads

Provide concrete slabs for two (2) 10ft x 27ft shelters weighing 30,000 pounds each.

Recommended size for each pad is 13ft x 37ft with a minimum 3,500 PSI rating. The bolt down pattern of the shelter can be adjusted to spread the load as required. Pad shall accommodate shelter and ECU.

1.5.3 GTE/CNE contractor Storage Shelter Pad

Provide a concrete slab for one (1) 10ft x 27ft shelter weighing 42,000 pounds. Recommended size is 13ft x 37ft with a minimum 3,500 PSI rating. The bolt down pattern of the shelter can be adjusted to spread the load as required. Pad shall accommodate shelter and ECU.

1.6 PAVEMENT DESIGN

This design includes an access road for vehicular and pedestrian traffic design to a minimum of 20 ft. The access road is widened to allow for a fuel track to offload without blocking the road. The access road should be aggregate surfacing in standards with UFC 3-250-09FA – Aggregate Surfaced Roads and Airfields.

1.7 DRAINAGE

A storm drain system should be created to drain towards the waterway east of the project site.

The storm drain pipes located on the plan sets are suggestions and should be designed in accordance with UFC 3-201-01, UFC 3-230-01, and HEC-22 4th edition. The project will comply with EISA 438 and UFC 3-210-10.

1.7.1 Design Storm Return Period

Storm drains and culverts are designed for a design storm with a return period of 10 years.

1.8 EROSION AND SEDIMENT CONTROL

1.8.1 Temporary Erosion and Sediment Controls

Temporary erosion and sediment controls such as silt fences, culvert inlet protection, drainage swales, check dams, etc. should be used in disturbed areas and prevent surrounding culverts, drainage systems, and waterways. Native seeding mixture will be used to revegetate disturbed grass areas. The contractor shall develop a Stormwater Pollution Prevention Plan to be prepared as part of the NPDES permit for stormwater discharges from construction sites.

1.9 SPECIFICATIONS

The following specifications will be included in the final design documents:

UFGS 32 11 23.23 Base Course Drainage Layers UFGS 32 92 19 Seeding UFGS 33 40 00 Storm Drainage UFGS 32 31 13 Chain Link Fences and Gates UFGS 32 15 00 Aggregate Surfacing UFGS 33 30 00 Stormwater Utilities UFGS 31 00 00 Earthwork

2 WATER SUPPLY AND WASTEWATER COLLECTION

2.1 DESIGN REFERENCES

The following references were used in preparing the water supply and wastewater collection design:

AMERICAN WATER WORKS ASSOCIATION

M22 Sizing Water Service Lines and Meters (2014)

NATIONAL FIRE PROTECTION ASSOCIATION

NFPA 24 Standard for the Installation of Private Fire Service Mains and Their Appurtenances (2025)

OMAHA DISTRICT DESIGN GUIDE (ODDG)

ODDG Omaha District Design Guide (July 2019)

UNIFIED FACILITIES CRITERIA (UFC)

UFC 3-230-02 O&M: Water Supply Systems (Change 2, 11 January 2023)

UFC 3-600-01 Fire Protection Engineering for Facilities (Change 6, 6 May 2021)

2.2 GENERAL

This section discusses the water and wastewater requirements to support the construction of the Relay Ground Station South Antenna at Schriever SFB, Colorado. The building site is on a previously undeveloped parcel of land. Domestic water is adjacent to the site. Hydrant flow tests could not be performed because the base was updating variable frequency drives for the fire booster pumps on base. Therefore, the capacity of the water system is unknown.

2.3 DOMESTIC WATER

No domestic water usage is planned for this project.

2.4 FIRE PROTECTION WATER

Three hydrants were recommended by the FPE to cover each of the three domes associated with this project. The size of the water line supplying the fire hydrants is still undetermined but will be decided by the contractor when a hydrant flow test can be performed to test system capacity.

2.5 SANITARY WASTEWATER

There is no sanitary sewer planned for this projection.

2.6 INDUSTRIAL WASTEWATER

There is no industrial wastewater planned for this project.

3 STRUCTURAL

3.1 SCOPE OF WORK

Refer to Part 1 – General Project Information.

The objective of this project is to design and construct a Relay Ground Station and its associated elements and structures to support the functions of Schriever Space Force Base.

The structural scope has been limited to the design of building/equipment pads, antenna pedestal foundations, radome ringwall foundations, radome ECU pads, and radome circulation fans and transformer pads. This also includes the attachment/anchorage of pre-engineered or prefabricated components and/or structures to said foundation elements.

3.2 DESIGN CRITERIA

3.2.1 References

The following references were used in preparing the structural design:

United Facilities Criteria UFC 1-200-01 DoD Building Code (General Building Requirements) (2024)

UFC 3-220-01 Geotechnical Engineering (2024)

UFC 3-301-01 Structural Engineering (2025)

UFC 4-010-01 DoD Minimum Antiterrorism Standards for Buildings (2024)

International Code Council

IBC International Building Code 2024

American Society of Civil Engineers

ASCE 7-22 Minimum Design Loads and Associated Criteria for Buildings and Other Structures

American Concrete Institute

ACI 318-19

ACI 302.1R

ACI 224.3R

Building Code Requirements for Structural Concrete and Commentary Guide for Concrete Floor and Slab Construction Joints in Concrete Construction

Regional Building Code

2023 Pike’s Peak Regional Building Code

The Structural Engineers Association of Colorado

2016 Colorado Design Snow Loads

3.3 DESIGN LOADING AND MATERIAL PROPERTIES

3.3.1 Risk Category

The Risk Category of the Relay Ground Station will be taken as IV, per UFC 3-301-01

3.3.2 Design Loads

Live, Snow, Seismic and Wind design requirements are based on UFC 3-300-01, IBC, ASCE 7, and regional code provisions.

3.3.2.1 Dead Loads (in addition to framing self-weight)

a. Typical structure dead load (assumed): 50 psf

3.3.2.2 Live Load

a. Minimum roof live loads = 20 psf (uniform – non-reducible) or 300 lb concentrated load (applied anywhere along roof secondary beams. Non-concurrent with the uniform load)

b. General Mechanical 125 psf

c. Equipment Pads

1. Generators 200 psf

2. GTE/CNE Shelters 125 psf

3. Storage Shelters 50 psf

3.3.2.3 Snow Load Criteria

a. Design Ground Snow Load, Pg 61 psf

b. Flat roof snow load, Pf 51.24 psf

c. Exposure factor (fully exposed roof), Ce 1.0

d. Thermal factor, Ct 1.2

3.3.2.4 Wind Load Criteria

a. Basic wind speed, V 140 mph

b. Wind exposure category C

c. Velocity pressure exposure coefficient, Kh Varies

d. Topographical factor, Kzt 1.00

e. Ground elevation factor; Ke 0.80

f. Directionality factor; Kd 0.85

g. Gust effect factor; G 0.85

h. Enclosure Classification = TBD based upon purchased/built structures

3.3.2.5 Seismic Load Criteria

a. Seismic Importance Factor, IE 1.5

b. Mapped Spectral Response Acceleration at short period, Ss 0.185g

c. Mapped Spectral Response Acceleration at a period of 1 s, S1 0.059 g

d. Design Spectral Response Acceleration at short period, SDS 0.133 g

e. Design Spectral Response Acceleration at a period of 1s; SD1 0.076 g

f. Site Class, update per soil report DE (Default)

g. Seismic Design Category C

h. Analysis procedure = Equivalent Lateral Force

i. Basic seismic force resisting system TBD

j. Seismic Response Coefficient, Cs TBD

k. Base shear TBD

3.3.3 Material Properties

3.3.3.1 Reinforced Concrete Design Parameters

a. Concrete unit weight Ɣconc = 150 pcf

b. Concrete (cast-in-place) for foundations: minimum 28-day compressive design strength with ACI freeze-thaw criteria shall be as follows:

1. Radome Ringwall Foundation 6000 psi

2. Other foundations 3500 psi

3.3.4 Foundation Design Parameters

3.3.4.1 Foundations

Based on a geotechnical investigation and report provided by the contractor, the following parameters shall be used for design of the foundation:

a. Net Allowable Soil Bearing Pressure qall = --- psf

b. Unit weight of Soil γsoil = -- pcf

c. Angle of internal friction ∅ = --°

d. Active lateral soil pressure coefficient Ka = ---

e. At-rest lateral soil pressure coefficient Ko = ---

f. Passive lateral soil pressure coefficient Kp = ----

g. Ultimate coefficient of sliding friction µ = ---

h. Modulus of Subgrade Reaction --- psi/in

Frost penetration --- inches

3.4 PROJECT DESCRIPTION AND STRUCTURAL SYSTEM

3.4.1 Proposed Structural System

The structure will be designed for all applicable dead, live, snow, seismic and wind loads per UFC 3-301-01, IBC 2024, ASCE 7-22, and other governing codes. The structures and/or components will consist of pre-engineered/prefabricated elements to be supported on designed and constructed foundation elements, including ringwall foundations, and equipment pads. Antenna foundations will be designed with the Interface Control Document (ICD) provided by the government. Verify the structural load requirements and apply the worst case.

3.4.2 Superstructure

No superstructure on this project. All structural elements are considered substructure.

3.4.3 Sub-Structure

Foundation - Support the equipment and/or components on a concrete pads/slabs and shallow spread footings, as needed. The EOR is responsible for the final design of all subgrade elements.

Final decision of foundation type shall be based upon the design of the EOR and should follow Geotech report recommendations.

3.5 DESIGN OF STRUCTURAL STEEL CONNECTIONS

Per USACE Engineering ER 1110-345-53, the engineer of record (EOR) is responsible for all Steel connections.

3.5.1 Simple Connections

Simple connections are connections subjected to shear loads only. Simple connections will be designed and detailed on the contract drawings.

3.6 DESIGN LOAD PATHS

3.6.1 Gravity Forces Resisting System (GFRS)

Gravity loads are transmitted from the roof deck to roof beams then to columns and walls to concrete pedestals to foundation to soil.

3.6.2 Lateral Forces Resisting System (LFRS)

Lateral forces will be resisted via CLT vertical and horizontal diaphragms then to foundation to soil. In addition, some loading would be transferred from walls to columns to foundation to soil.

4 MECHANICAL

4.1 REFERENCES

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ASHRAE 62.1(2022) Ventilation for Acceptable Indoor Air Quality

ASHRAE HVAC APP IP HDBK(2023) HVAC Applications Handbook, I-P Edition

ASHRAE 189.1(2014) Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

ASHRAE 90.1 - IP(2019); Energy Standard for Buildings Except Low-Rise Residential Buildings

ASHRAE 55(2023) Thermal Environmental Conditions for Human Occupancy

ASHRAE 52.2(2017) Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size

ANSI/ASHRAE 15 & 34(2013) ANSI/ASHRAE Standard 15-Safety Standard for Refrigeration Systems and ANSI/ASHRAE Standard 34-Designation and Safety Classification of Refrigerants

ASHRAE FUN IP(2021) Fundamentals Handbook, I-P Edition

ASME INTERNATIONAL (ASME)

ASME CSD-1(2021) Control and Safety Devices for Automatically Fired Boilers

ASSOCIATED AIR BALANCE COUNCIL (AABC)

AABC MN-1(2002; 6th ed) National Standards for Total System Balance

ASTM INTERNATIONAL (ASTM)

ASTM B117(2019) Standard Practice for Operating Salt Spray (Fog) Apparatus

FOUNDATION FOR CROSS-CONNECTION CONTROL AND HYDRAULIC RESEARCH

(FCCCHR)

FCCCHR List(continuously updated) List of Approved Backflow Prevention Assemblies

FCCCHR Manual(10th Edition) Manual of Cross-Connection Control

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC(2024) International Building Code

ICC IMC(2024) International Mechanical Code

ICC IPC(2024) International Plumbing Code

NATIONAL ENVIRONMENTAL BALANCING BUREAU (NEBB)

NEBB PROCEDURAL STANDARDS(2015) Procedural Standards for TAB (Testing, Adjusting and Balancing) Environmental Systems

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

SMACNA 1966(2020) HVAC Duct Construction Standards Metal and Flexible, 4th Edition

SMACNA 1981(2008) Seismic Restraint Manual Guidelines for Mechanical Systems, 3rd Edition

U.S. DEPARTMENT OF DEFENSE (DOD)

UFC 1-200-01(2022; with Change 3, 2024) DoD Building Code

UFC 1-200-02(2020; with Change 2, 2022) High Performance and Sustainable Building Requirements

UFC 3-400-02(2018) Engineering Weather Data

UFC 3-401-01 (2015) Mechanical Engineering, with Change-1

UFC 3-410-01(2013; with Change 9, 2024) Heating, Ventilating, and Air Conditioning, with Change 9

UFC 3-410-02(2018; with Change 2, 2021) Direct Digital Control for HVAC and Other Local Building Systems, with Change 2

UFC 3-420-01(2021) Plumbing Systems

UFC 4-010-01(2018; with Change 3, 2024) DoD Minimum Antiterrorism Standards for Buildings, with Change 3

U.S. DEPARTMENT OF ENERGY (DOE)

EPact 2005 Energy Policy Act of 2005

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 90A(2024) Standard for the Installation of Air Conditioning and Ventilating Systems

4.2 GENERAL

The purpose of this project is to provide mechanical systems for heating, ventilating, and air conditioning in support of the facilities for the Relay Ground Station at Schriever SFB in Colorado Springs, CO. New mechanical equipment will be provided to condition the shelters that are part of this project. Descriptions of the mechanical systems are listed below for the different space functions.

4.3 DESIGN REQUIREMENTS

4.3.1 General Design Criteria

Elevation 6570 ft.

4.3.2 Design Temperatures

Winter:

Outside: 0 degrees F.

Inside: 68 degrees F. (Occupied Space)

72 degrees F. DB (Comm. Rooms) 55 degrees F. (Mechanical/ Electrical Room/ Vestibule)

Summer:

Outside: 87 degrees F. DB (1 percent) 57 degrees F. MCWB (1 percent)

Inside: 78 degrees F. DB (Occupied Space)

72 degrees F. DB (Comm. Rooms) Ventilated only (Mechanical / Electrical Room)

4.3.3 Occupancy

Shelters are unoccupied and the site is unmanned.

4.3.4 Internal Heat

4.3.4.1 Electrical Equipment

Load calculations will take into account heat generated from anticipated equipment, lighting, and misc. loads. Loads for electrical equipment are based on conservative heat release values. In communication rooms with one or more comm/security racks, mechanical cooling will be provided to cool the rooms to 72 degrees F.

4.3.5 Heating, Ventilation and Air Conditioning Load Calculations

HVAC load calculations will be performed for shelters using approved computer software. The load calculations will take into account building construction, equipment located within spaces and changing climatic conditions. The load calculations will be utilized for sizing HVAC equipment and for determining air flow requirements.

4.4 HVAC SYSTEMS

4.4.1 Heating and Cooling Equipment

New Environmental Control Units (ECU’s) will be provided for the shelters. ECU’s will be packaged direct expansion heat pump type with electric backup heat. ECU’s are not required to be High Altitude Electro Magnetic Pulse (HEMP) survivable.

4.4.2 Environmental Control

4.4.2.1 Controls

The direct digital control system for the new equipment shall be a complete system suitable for the control of heating, ventilating, and air conditioning (HVAC) equipment and other building-level systems as specified and shown. The system shall be a BACnet over IP controls system and capable of operating fully stand-alone. Contract drawings shall provide the sequence of operation for the functions of all buildings.

4.5 UTILITY REQUIREMENTS

A new natural gas service line is not expected at this time.

4.6 ENERGY CONSERVATION

All new systems and equipment shall be designed giving maximum consideration to energy conservation. Equipment and systems shall be designed to meet the applicable requirements of ASHRAE Standards 90.1 and 189.1 and UFC 1-200-02, as applicable.

4.7 PLUMBING SYSTEM REQUIREMENTS

4.7.1 General Requirements

No domestic or sanitary plumbing is currently planned for any of the shelters provided under this contract.

5 FUELS MECHANICAL

5.1 DESIGN REFERENCES

The following references are used in preparing this design:

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)

ASME B31.3 Process Piping ASME B16.5 Pipe Flanges and Fittings

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 30 Flammable and Combustible Liquids Code (2024) NFPA 37 Standard for the Installation and Use of Stationary Combustion Engines and Gas

Turbines (2024) NFPA 110 Standard for Emergency and Standby Power Systems (2025) NFPA 704 Standard System for the Identification of the Hazards of Materials for Emergency

Response (2022)

UNITED FACILITIES CRITERIA

UFC 3-460-01 Design: Petroleum Fuel Facilities Petroleum Fuel Facilities (16 Jul 2019, Chg 3

June 2023) UFC 3-460-03 Operation and Maintenance of Petroleum Systems (10 Nov 2017, Chg 2 – 24

Aug 2023) UFC 3-540-07 Operation and Maintenance (O&M): Generators (21 Feb 2018, Chg 1 – 5 Nov

2019)

U.S. DEPARTMENT OF DEFENSE

AW 078-24-28 (2020) Pressurized Hydrant Fueling System Type III MIL-STD-161 (2015; Rev H) Identification Methods for Bulk Petroleum Products

Systems Including Hydrocarbon Missile Fuels STD 123-335-03 (2015) Military Service Station and Factory Fabricated Tank Engineering

Standard

UNDERWRITERS LABORATORIES (UL)

UL 142 (2019; R 2021) Protected Aboveground Tanks for Flammable and Combustible Liquids

5.2 FUELING SYSTEM

5.2.1 General

The new fueling system at Schriever SFB will include one offload station with two separate offload points, approximately 250 feet of aboveground piping, one 20,000-gallon bulk diesel fuel UL 142 single walled horizontal AST with containment, three 500 gallon horizontal UL 142 double walled diesel day tanks that will each supply fuel to 500 kW auxiliary power generators, and one 300 gallon UL 142 double walled overflow day tank that will return fuel to the bulk tank.

The fuel system design will incorporate the latest UFGS specifications, design criteria, and standard drawings for fueling facilities.

Piping will be designed to a MAWP of 275 psig. Flanges and fittings will be Class 150 in accordance with ASME B16.5 Pipe Flanges and Fittings.

The fueling system and gensets are bid options.

5.2.2 Offload Equipment

The facility shall have two (2) points of receiving fuel. Each line will have a pumped offload and a bypass line if the delivery truck has an onboard pump. All piping downstream of each positive displacement offload pump will be 4" coated carbon steel. The piping and equipment upstream of the pump will be 6" coated carbon steel. The PD pump will offload fuel at 300 gpm. A pressure vacuum gauge, ball valve, 6" sight flow indicator, and 6" basket strainer with support feet, drain, and differential pressure gauge shall be provided upstream of each pump. Downstream of each pump there will be a 4" ball valve and a 4" positive displacement and temperature compensating meter with an inlet side strainer/air eliminator. A paddle type flow switch shall also be provided.

Meter proving connections and associated ball valves shall be provided. Each main line shall relief into a 5-gallon SS drain tank with 1" drain piping from pump/air eliminator. Each line shall also have a sample connection port downstream of each meter. The offload equipment will be resting on a concrete pad with dimensions 19’ x 13’ x 5” thick. A portable eyewash station will be on the offload pad as well to satisfy UFC 3-460-01 Chapter 2-10.1.

5.2.3 Tank/Generator Area

Downstream of the offload equipment is approximately 100 feet of aboveground 4” coated carbon steel pipe leading to one (1) 20,000-gallon UL 142 single walled aboveground horizontal bulk diesel tank. The tank will sit on a concrete pad with dimensions 45’ x 25’ x 4.5’ with a thickness of at least 12”. The bulk tank will have all required appurtenances per UFC 3-460-01 Table 8-1 and have its own containment. There will be three (3) day tanks downstream of the bulk tank that will be filled via positive displacement pumps. Each day tank will be UL 142 rated, double walled, and have a capacity of approximately 500 gallons. A 500-kW auxiliary generator will be next to each day tank to act as a backup power supply for the new relay ground station. For overflow prevention there will be an overflow day tank with a duplex return pump assembly. The overflow day tank will be approximately 300 gallons and be single walled. Each day tank will include: An external ladder and platform with safety railing for gauging and sampling (if height justifies it), automatic tank gauge with high and low level alarms, open atmospheric vents with weather hoods and bird screens, emergency relief venting, a clock-type mechanical gauge, a 4" opening without a drop tube or gauge hatch, high level shutoff valve with a setpoint of 95%, a 2" DBB plug valve at the low end of the tank, a water removal suction tube at the low end of the tank with connection for water removal by truck, striker plates under all openings used for manual gauging, a 2" monitoring port including a tube which provides a means to detect product leakage from the primary tank into the secondary tank, and a lockable, welded steel overfill protection box and manual drain valve to return spills to the inner tank. The ball valves are stainless steel internally plated with chromium or nickel or internally electroless nickel-plated. Each generator has an internal pump which allows fuel to be transferred as needed. The generator pad will have dimensions 39’ x 14’ and be at least 10” thick.

5.2.4 Fuel Polishing

Pump must be a sliding vane type rotary pump and conform to UFGS 33 57 55. The pump construction must permit the removal of the rotor and sliding vanes without disconnecting the pump. The Polishing Pump capacity must be 300 gal per minute. The pump and motor must be mounted on a steel subbase. The motor must have sufficient power for the service required, be of a type approved by the manufacturer of the pump, be suitable for available electric service, be totally enclosed, fan cooled, and TEFC.

Diesel fuel will be polished downstream of the offload point and upstream of the bulk tank at 300 gpm. Fuel will be polished upon offloading into the bulk tank. A recirculation line will also be on the low end of the bulk tank to polish fuel as needed per UFC 3-540-07. Polished fuel will re-enter the bulk tank through the receipt piping.

5.2.5 Controls Philosophy

Pumps will be manually turned on by the operator during a fuel offloading event. The pumps will turn off when an EFSO switch is triggered or during a high-level fuel event. The visual alarm panel at the offload station will notify the operator of the fuel level in each tank. When a fuel level event occurs, a light will appear on the panel notifying the operator. This panel will have a visual indicator for the pump, and all four level alarms (low-low, low, high, and high-high) for the bulk tank. There will also be an EFSO switch and audible alarm on the panel. The audible alarm will trigger if any level alarm or the EFSO switch is activated.

Each 500 gallon day tank will operate normally between the low and low-low level alarm fuel levels. This is to ensure the least amount of fuel is stagnant at any point and to minimize dead legs per API 570. Each 500 gallon day tank will have four level alarms that will be monitored by two probes. One probe will monitor the low and low-low alarms which will have a setpoint of 40% and 5% before suction loss, respectively. The other probe will be for the high and high-high level alarms which is set for 85% and 90%, respectively. For overflow prevention there will be a separate overflow day tank with a capacity of approximately 300 gallons to satisfy NFPA 37. This overflow day tank will be configured with a duplex return pump assembly. This allows for a lead/lag pump startup and acts as further redundancy for this N+1 system. The overflow return pumps must be sized by the DOR to overcome the maximum total fuel flow rate feeding the day tanks. When a high level alarm is triggered on a day tank, the overflow return pump must turn on and reduce the fuel level in the day tank until it hits the low level alarm. When a high-high alarm is triggered, all power to the respective PD pump issuing fuel must be turned off in addition to the overflow return pump activating. When a low level alarm is triggered, a signal will get sent to the overflow return pump to shutoff so normal operations can resume. When a low-low level alarm is triggered, a signal will get sent to the respective PD pump to turn on and issue fuel automatically to the day tank that needs it. This type of operation will allow for the site to be unmanned, though preventative maintenance will still need to be executed on a regular basis per UFC 3-460-03 and

UFC 3-540-07.

The polishing system will be fully automated and automatically run at least every 3 months & during all offload events. For maintenance purposes, a start/stop button will also be included. The 300 gpm sliding vane rotary pump will be used for recirculation only and be on a set timer of 70 minutes to recirculate all fuel in the bulk tank. The 300 gpm PD offload pump will be used during offload events and shut off via flow switch upstream of the polishing station.

5.3 SPECIFICATION OUTLINE

09 97 13.27 HIGH PERFORMANCE COATING FOR STEEL STRUCTURES

33 01 50.31 LEAK DETECTION FOR FUELING SYSTEMS

33 01 50.55 CLEANING OF PETROLEUM STORAGE TANKS

33 08 55 COMMISIONING OF FUEL FACILITY SYSTEMS

33 52 10 FUEL SYSTEMS PIPING (SERVICE STATION)

33 52 23.15 POL SERVICE PIPING WELDING

33 52 40 FUEL SYSTEMS PIPING (NON-HYDRANT)

33 52 80 LIQUID FUELS PIPELINE COATING SYSTEMS

33 57 55 FUEL SYSTEM COMPONENTS (NON-HYDRANT)

5.4 20,000 GALLON BULK TANK PRODUCT DATA SHEET EXAMPLE

5.5 500 GALLON DAY TANK PRODUCT DATA SHEET EXAMPLE

5.6 500 KW GENERATOR PRODUCT DATA SHEET EXAMPLE

6 ELECTRICAL

6.1 DESIGN CRITERIA

6.1.1 Reference Publications

As required for this project, the design is based on, but not limited to the following publications, codes, specifications, etc.:

U.S. ARMY CORPS OF ENGINEERS (USACE)

ODDG (2019) Omaha District Design Guide for Design Solicitations

UNIFIED FACILITIES CRITERIA (UFC)

UFC 3-501-01 (2024) Electrical Engineering UFC 3-520-01 (2025) Interior Electrical Systems UFC 3-530-01 Interior and Exterior Lighting Systems and Controls UFC 3-550-01 Exterior Electrical Power Distribution UFC 3-560-01 Electrical Safety, O&M UFC 3-570-01 Cathodic Protection UFC 3-570-06 O&M: Cathodic Protection Systems UFC 3-575-01 Lightning and Static Electricity Protection Systems UFC 3-580-01 Telecommunications Interior Infrastructure Planning and

Design UFC 3-600-01 Fire Protection Engineering for Facilities UFC 4-010-01 DOD Minimum Antiterrorism Standards for Buildings UFC 4-010-06 Cybersecurity of Facility-Related Control Systems UFC 4-021-01 Design and O&M: Mass Notification Systems UFC 4-021-02 Electronic Security Systems

U.S. Air Force (USAF)

SCHRIEVER AFB IFS Schriever Air Force Base Installation Facilities Standards (IFS) AFI 16-1404 Air Force Information Security Program AFI 16-1406 Air Force Industrial Security Program AFI 32-1054 Corrosion Control AFI 32-1062 Electrical Systems, Power Plants, and Generators AFI 32-1065 Grounding and Electrical Systems TM 5-811-1/AFJMAN 32-1080 Technical Manual: Electrical Power Supply and

Distribution AFMAN 32-1065 (2020) Grounding & Electrical Systems DAFMAN 32-1084 (2022) Facility Requirements DAFGM2022-32-01 Civil Engineer Control Systems Cybersecurity

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-HDBK 232 Red/Black Engineering - Installation Guidelines MIL-HDBK-419A Grounding, Bonding, and Shielding for Electronic Equipment and

Facilities Volumes 1 of 2 Basic Theory MIL-STD-188-124B Grounding, Bonding and Shielding for Common Long

Haul/Tactical Communications Systems, Including Ground

Based Communications - Electronics Facilities and Equipment

AMERICAN SOCIETY OF HEATING, REFRIGERATING AND AIR-CONDITIONING

ENGINEERS (ASHRAE)

ASHRAE 189.1 Standard for the Design of High-Performance Green Buildings Except Low-Rise Residential Buildings

ASHRAE 90.1 Energy Standard for Buildings Except Low-Rise Residential Buildings

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 National Electrical Code

NFPA 70B Recommended Practice for Electrical Equipment Maintenance NFPA 70E Standard for Electrical Safety in the Workplace NFPA 72 National Fire Alarm Code NFPA 101 Life Safety Code NFPA 780 Standard for the Installation of Lightning Protection Systems

Illuminating Engineering Society of North America (IESNA)

IESNA - Lighting Handbook

AMERICAN NATIONAL STANDARDS INSTITUTE

ANSI C2 National Electrical Safety Code

TELECOMMUNICATIONS INDUSTRY ASSOCIATION

TIA-568 Commercial Building Telecommunications Cabling Standard

TIA-569 Telecommunications Pathways and Spaces

TIA-758 Customer-Owned Outside Plant Telecommunications Infrastructure Standard

ARCHITECTURAL BARRIERS ACT (ABA)

CFR 1191 Americans with Disabilities Act (ADA) Accessibility Guidelines for Buildings and Facilities; Architectural Barriers Act (ABA) Accessibility Guidelines (ADAAG)

6.2 SCOPE

This project includes the complete design-build electrical and telecommunication distribution system, ground terminal equipment, communications and networking equipment, facilities and infrastructure, and command, control, communications, computers, intelligence/information technology to support the Relay Ground Station project at Schriever Space Force Base, in El Paso county, Colorado. The purpose of this project is to provide the infrastructure to various buildings that run the satellite ground stations sponsored by the United States Space Force.

USACE is to provide a notional design and preliminary specifications based on known requirements. This will mainly cover the infrastructure of the site electrical, telecom, and grounding/lightning protection.

F&I contractors will design, procure, install, and commission the facilities and infrastructure, which will consist of concrete pads, antenna pedestal foundations, radome ringwalls, site utilities, backup generators, fuel tanks, pathways and cabling, and electrical and comm facility shelters.

This project is intended to lay the infrastructure for future contracts.

Future contracts being the following:

GTE/CNE contractor will design, procure, develop, integrate and test the ground terminal equipment, which will consist of three sets of ground terminal equipment housed in environmentally controlled radomes, 13.5-meter antennas, modems, transmitters, receivers, motor assemblies, and other associated radio frequency (RF) components.

CNE contractor will design, procure, develop, integrate, and commission the communications and networking equipment, which will consist of routers, firewalls, computers, cryptos, and other associated networking equipment and will be housed in its own environmentally controlled CNE shelter. This equipment will provide communications services, cyber services, networking services, encryption, fault detection, local configuration, administrative functions, and timing.

6.2.1 Design Systems

This design will generally consist of the following:

6.2.1.1 Exterior

Power Distribution Lighting Grounding and Lightning Protection Lighting Controls Exterior Telecommunications

6.3 USACE NOTATIONAL EXTERIOR ELECTRICAL WORK

6.3.1 Power Distribution

Electrical power for the site will be supplied via the “E-House” electrical distribution. New directionally bored duct bank will be connected from E-House to Manhole 101. From Manhole 101 to Manhole 111 an existing spare conduit can be utilized as a path. From Manhole 111 a new concrete encased duct bank will need to be run to Manhole 111A then Manhole 111B, and to a new three phase pad mounted transformer. The pad mounted transformer will feed a switchboard located in a new building called electrical site facility. New manholes and duct banks will be installed to bring power from the switchgear in electrical site facility to the new radomes, GTE shelter, CNE Shelter and other loads that the contractors will provide.

Ductbanks shall be concrete encased.

Voltage variation shall not exceed 5% and transient voltage surge suppression shall be provided.

The total expected power required for the site is approximately 619.7 Kva

Fuel loads are not incorporated in approximate estimate. Designer of record is to adjust total approximate load estimate as the design progresses if fuels option is awarded.

6.3.2 Grounding and Lightning Protection

A grounding and lightning protection system shall provide personnel safety, equipment and building protection, and electrical noise reduction for the site. Grounding and lightning protection in the new facilities must be in accordance with ANSI/IEEE-C2, NFPA 70, NFPA 780, and UFC 3- 575-01. Each shelter must have an equipotential ground system, which must be connected to the earth electrode subsystem at as many points as practical in accordance with MIL-STD-188-124B and MIL-HDBK-419A.

6.3.3 Exterior Telecommunications

Exterior Telecommunications will consist of the installation of outside plant (OSP) conduit pathways and fiber optic cabling.