Maint_DurList_Distribution Copy - 2025-07-16.pdf

60 CES MAINTAINABILITY

& DURABILITY LIST

Installation Design Guidelines and Standards from a Maintenance Perspective

Abstract Installation design guidelines, standards, and preferences with the goal of maximizing maintainability and durability of newly installed/repaired facilities and facility assets.

TABLE OF CONTENTS

INTRODUCTION 4

B SHELL 5

B20 EXTERIOR ENCLOSURE

B2030 EXTERIOR DOORS

B203003 REVOLVING DOORS

B203004 OVERHEAD AND ROLL-UP DOORS

B203005 HANGAR DOORS

B203008 EXTERIOR DOOR HARDWARE

B30 ROOFING

B3010 ROOF COVERINGS

B301001 STEEP SLOPE ROOF SYSTEMS

B301002 LOW SLOPE ROOF SYSTEMS

B301005 GUTTERS AND DOWNSPOUTS

C INTERIORS 7

C10 INTERIOR CONSTRUCTION

C1020 INTERIOR DOORS

C102007 INTERIOR DOOR HARDWARE

C1030 SPECIALTIES

C103005 LOCKERS

C103006 SHELVING

C103009 CABINETS

C20 STAIRS

C2010 STAIR CONSTRUCTION

C201001 INTERIOR AND EXTERIOR STAIRS

C30 INTERIOR FINISHES

C3010 WALL FINISHES

C301003 GYPSUM WALLBOARD FINISHES

C3020 FLOOR FINISHES

C302001 TILE FLOOR FINISHES

C302003 WOOD FLOORING

C302004 RESILIENT FLOOR FINISHES

C302005 CARPETING

C302006 MASONRY AND STONE FLOORING

C302007 WALL BASE FINISHES

C302008 STAIR FINISHES

C302090 OTHER FLOORING AND FLOOR FINISHES

C3030 CEILING FINISHES

C303001 ACOUSTICAL CEILING TILES AND PANELS

C303002 GYPSUM WALLBOARD CEILING FINISHES

C303003 PLASTER CEILING FINISHES

C3040 INTERIOR COATINGS / SPECIAL FINISHES

C304006 GYPSUM WALLBOARD FINISHES

D SERVICES 9

D20 PLUMBING

D2010 PLUMBING FIXTURES

D2020 DOMESTIC WATER DISTRIBUTION

D202003 DOMESTIC WATER EQUIPMENT

D2040 RAINWATER DRAINAGE

D204002 ROOF DRAINS

D30 HVAC

D3010 ENERGY SUPPLY

D301002 GAS SUPPLY SYSTEM

D301005 SOLAR ENERGY SUPPLY SYSTEMS

D3020 HEAT GENERATING SYSTEMS

D302001 BOILERS

D302003 FUEL-FIRE UNIT HEATERS

D3030 COOLING GENERATING SYSTEMS

D303001 CHILLED WATER SYSTEMS

D303002 DIRECT EXPANSION (DX) SYSTEMS

D3040 DISTRIBUTION SYSTEMS

D304001 AIR DISTRIBUTION, HEATING, AND COOLING

D304003 HOT WATER DISTRIBUTION SYSTEMS

D304004 CHANGE OVER DISTRIBUTION SYSTEMS

D304006 CHILLED WATER DISTRIBUTION SYSTEMS

D304007 EXHAUST SYSTEMS

D304008 AIR HANDLING UNITS

D3050 TERMINAL & PACKAGE UNITS

D305001 UNIT VENTILATORS

D305003 UNIT HEATERS

D305003 FAN COIL UNITS

D305005 ELECTRIC HEATING

D305006 PACKAGE UNITS

D3060 CONTROLS AND INSTRUMENTATION (HVAC)

D305001 HVAC CONTROLS

D306003 PNEUMATIC CONTROLS

D3070 SYSTEMS TESTING & BALANCING

D307001 WATER SIDE TESTING & BALANCING (HEATING & COOLING)

D307002 AIR SIDE TESTING & BALANCING (HEATING, COOLING, & EXHAUST)

D307003 HVAC COMISSIONING

D3090 OTHER HVAC SYSTEMS AND EQUIPMENT

D309001 GENERAL HVAC CONSTRUCTION ITEMS

D40 FIRE PROTECTION

D4010 FIRE ALARM AND DETECTION SYSTEMS

D401001 FIRE ALARM DISTRIBUTION

D401002 FIRE ALARM DEVICES

D4020 FIRE SUPPRESSION WATER SUPPLY & EQUIPMENT

D402001 FIRE PROTECTION WATER PIPING AND EQUIPMENT

D402002 FIRE PUMP

D4090 OTHER FIRE PROTECTION SYSTEMS

D409001 CARBON DIOXIDE SYSTEMS

D409002 FOAM GENERATING EQUIPMENT

D409004 HOOD AND DUCT FIRE PROTECTION

D50 ELECTRICAL

D5010 ELECTRICAL SERVICE & DISTRIBUTION

D501004 PANELBOARDS

D5020 LIGHTING AND BRANCH WIRING

D502001 BRANCH WIRING

D502002 LIGHTING EQUIPMENT

D5090 OTHER ELECTRICAL SYSTEMS

D509002 EMERGENCY LIGHTING AND POWER

D509006 ENERGY MANAGEMENT CONTROL SYSTEM

E EQUIPMENT AND FURNISHINGS 30

F SPECIAL CONSTRUCTION AND DEMOLITION 31

F10 SPECIAL CONSTRUCTION

F2020 HAZARDOUS COMPONENTS ABATEMENT

G BUILDING SITEWORK 32

G10 SITE PREPARATIONS

G1040 HAZARDOUS WASTE REMEDIATION

G30 SITE CIVIL/MECHANICAL UTILITIES

G3010 WATER SUPPLY

G301002 POTABLE WATER DISTRIBUTION

G301004 FIRE PROTECTION WATER DISTRIBUTION

G301005 FIRE PROTECTION WATER STORAGE

G3020 SANITARY SEWER

G302004 PACKAGED SANITARY SEWER TREATMENT PLANTS

G302005 SEPTIC TANKS

G302006 DRAIN FIELDS

G306006 GAS DISTRIBUTION PIPING (NATURAL AND PROPANE)

G40 SITE ELECTRICAL UTILITIES

INTRODUCTION

The purpose of this document is to list the design/construction preferences at Travis Air Force Base, which are not addressed by Local/State/Federal regulations, UFCs, AFIs, UFGS, and architectural standards. It is not the purpose of this document to repeat requirements that are included in regulations/UFCs/AFIs/UFGS, the most stringent standard shall apply. The Contractor will be responsible for reviewing regulations/UFCs/AFIs/UFGS and this document for their applicability to projects. The Contractor shall also comply with the Environmental General Requirements (SECTION 015600). This document is organized using ASTM E1557 UNIFORMAT II classifications.

The Contractor shall be responsible for familiarizing themselves with the UNIFORMAT II.

B SHELL

B20 EXTERIOR ENCLOSURE

B2030 EXTERIOR DOORS

B203003 REVOLVING DOORS

Revolving Doors: Do not design for nor install revolving doors.

B203004 OVERHEAD AND ROLL-UP DOORS

Overhead Doors: Do not design for nor install overhead doors. Use roll-up doors instead of overhead doors. The preferred brand for roll-up doors is Overhead Door Company.

B203005 HANGAR DOORS

Hangar Door Experience: Personnel doing work, such as installation, repair, and/or maintenance, must provide proof of prior experience working on hangar bay doors exceeding 60 ft in height, such as those located at international airports.

B203008 EXTERIOR DOOR HARDWARE

Door Handles: Do not provide doorknobs. Door handles must be used to comply with American Disability Act (ADA).

Panic Hardware: The preferred brand of panic hardware is Von Duprin.

Locks: Do not provide mortise locks. The preferred brand of locks and keys is Schlage. Provide only hardware that is compatible with Schlage large format interchangeable core (LFIC):

Pins: 6 Keyway: C Keyset: Keyed-Alike (KA) Finish: Satin Chrome

The locksmith must be able to rekey without disassembling door hardware. Disassembling door hardware carries risk of voiding the hardware and installation warranty.

B30 ROOFING

Roof Fall Protection: All roofing systems must have anchor points to attach fall protection equipment.

B3010 ROOF COVERINGS

B301001 STEEP SLOPE ROOF SYSTEMS

Metal Standing Seam: Steep/high slope roofs must use metal standing seam.

B301002 LOW SLOPE ROOF SYSTEMS

Bituminous: Do not use built-up/bituminous materials for low slope roofs. Metal standing seam is preferred for all low slope roof systems.

B301005 GUTTERS AND DOWNSPOUTS

Hidden Downspouts: Do not design nor install downspouts inside of structural/load-bearing members. Hidden downspouts are very difficult to monitor for leaks and repair.

C INTERIORS

C10 INTERIOR CONSTRUCTION

C1020 INTERIOR DOORS

C102007 INTERIOR DOOR HARDWARE

Interior Door Hardware: Provide the same hardware used on exterior doors. See B203008

EXTERIOR DOOR HARDWARE.

C1030 SPECIALTIES

C103005 LOCKERS

Built-in Lockers: Do not design for, nor install, built-in lockers.

C103006 SHELVING

Built-in Shelving: Do not design for, nor install, built-in shelving.

C103009 CABINETS

Cabinets: Provide and install only oak or pine painted cabinets.

C20 STAIRS

C2010 STAIR CONSTRUCTION

C201001 INTERIOR AND EXTERIOR STAIRS

Exterior Stairs: Design for, or provide, only metal exterior stairs.

C30 INTERIOR FINISHES

C3010 WALL FINISHES

C301003 GYPSUM WALLBOARD FINISHES

Gypsum Wall: Provide textured finish on gypsum boarded walls.

C3020 FLOOR FINISHES

C302001 TILE FLOOR FINISHES

Floor Tiles: Provide tiles that have standard size of 12-in x 12-in. Tile material must be ceramic or PVC. Tile color must be blue or gray.

C302003 WOOD FLOORING

Wood Floor: Wood floor must be oak. Do not stain wood flooring.

C302004 RESILIENT FLOOR FINISHES

Epoxy Floor Finish: Use only epoxy coating for resilient floor finishes.

C302005 CARPETING

Carpeting: Do not use rolled carpet. Only use tiled carpet. Carpet tile size must be 2-ft x 2-ft.

Carpet color must be blue or gray.

C302006 MASONRY AND STONE FLOORING

C302007 WALL BASE FINISHES

Wall Base: Use cove base when floor is carpet. The color of cove base must match color of carpet. If using wood for wall base, the wood must be oak or pine painted.

C302008 STAIR FINISHES

Interior Stair Finish: Do not provide carpet finish. Provide rubber coverings only.

C302090 OTHER FLOORING AND FLOOR FINISHES

Painting and Staining Floors: Do not paint or stain floors.

C3030 CEILING FINISHES

C303001 ACOUSTICAL CEILING TILES AND PANELS

Acoustical Ceiling: Tile sizes must be 2-ft x 2-ft. The preferred brand is Armstrong flat tile.

C303002 GYPSUM WALLBOARD CEILING FINISHES

Gypsum Boarded Ceiling: Use either textured or flat finish.

C303003 PLASTER CEILING FINISHES

Plaster Ceiling Finish: Use either textured or flat finish.

C3040 INTERIOR COATINGS / SPECIAL FINISHES

C304006 GYPSUM WALLBOARD FINISHES

Gypsum Wallboard Finish: Use either textured or flat finish.

D SERVICES

D20 PLUMBING

Placement over Electronics: Do not place plumbing components above or over electric and electronic panels and equipment. There is a chance that the component could develop a leak, damaging the electrical components. See also D50 ELECTRICAL.

Placement Height: Install appurtenances such as valves, meters, tanks, no more than 6 ft above floor level. Install heavy (>25 lb.) appurtenances at floor level.

D2010 PLUMBING FIXTURES

Fixtures: For all plumbing, only provide manually operated fixtures. Do not provide touchless fixtures or battery-powered valves. Touchless fixtures tend to wear out faster than manually operated fixtures. Also, by the time a direct replacement can be ordered, the shop will end up installing a manual fixture anyway to allow the fixture to be used again. 60 CES/CEOIU currently does not have a preferred manufacturer for plumbing fixtures, however, 60 CES/CEOIU prefers brands/models that are already on stock from local hardware stores. Do no provide expensive, unique/special, or custom-made fixtures.

Recessed Fixtures: Do no provide recessed fixtures. It is often difficult to find replacement fixtures that fit recessed spaces. Additionally, recessed fixtures are difficult to access for maintenance. Provide only surface-mounted or standalone fixtures.

D2020 DOMESTIC WATER DISTRIBUTION

D202003 DOMESTIC WATER EQUIPMENT

Domestic Hot Water Boilers: The preferred manufacturer for domestic hot water boilers is Peerless (with stainless steel tank).

Provide DDC controls domestic hot water temperature monitoring/alarm to the base EMCS Server/OWS.

D2040 RAINWATER DRAINAGE

D204002 ROOF DRAINS

Interior Drains: Roof drains shall not drain into the building’s interior.

D30 HVAC

Applicable HVAC Standards / Specifications. Applicable HVAC standards / specifications include, but are not limited to:

• Unified Facilities Criteria (UFC):

o UFC 3-410-01, Heating, Ventilating, and Air Conditioning Systems o UFC 3-410-02, Direct Digital Control for HVAC and Other Building Control Systems o UFC 3-410-04, Industrial Ventilation o UFC 3-430-01FA, Heating and Cooling Distribution Systems o UFC 4-010-01, DoD Minimum Antiterrorism Standards for Buildings o UFC 4-010-06, Cybersecurity of Facility-Related Control Systems o UFC 6-600-01, Fire Protection Engineering for Facilities

• Unified Facilities Guidance Specification (UFGS):

o UFGS 25 05 11, Cybersecurity for Facility Related Control Systems

• American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) o ASHRAE 62.1, Ventilation and Acceptable Indoor Air Quality o ASHRAE 90.1, Energy Standard for Sties and Buildings Except Low-Rise Residential

Buildings

• National Standards for Total System Balance

• Air Force Instruction (AFI) 32-1001, Civil Engineer Operations

HVAC System Renovation. For any renovation of existing HVAC systems the HVAC design shall include design values for all equipment including existing equipment. If the system will connect to existing ductwork serving other areas of the facility the airflow requirements at all terminals units shall be provided in the design drawings to ensure that a proper Testing, Adjusting, and Balancing (TAB) can be performed on the system. All equipment, ductwork, etc. connected to new or modified equipment as well as any distribution systems that serve the same areas as new or modified equipment shall be part of the project scope.

General HVAC Drawing Requirements. Mechanical design drawings shall be provided in accordance with UFC 3-410-01. Provide control system drawings, control valve schedule, equipment schedule, mechanical floorplans, detailed drawings, and all other UFC required design drawings. The government will need a minimum of two weeks to review and provide comments.

General HVAC Accessibility Requirements. In accordance with UFC 3-410-01, provide special maintenance accommodations to access HVAC equipment and controls that are to be installed 12 ft or more above finished floors. Include sufficiently sized access panels, ladders, walkways, platforms, roof tie downs and clearances to safely maintain and repair equipment.

24 / 7 Heating or Cooling. Some zones / facilities may require 24 / 7 heating or cooling. Consult with the tenant organization to identify zones and/or equipment that may have special temperature requirements (e.g., medical supplies, medication vault, evidence room, secured facilities, communications rooms, etc.). Often, it is more cost-effective to provide an independent, dedicated HVAC system to serve these zone(s) than to use the facility-wide HVAC system. Perform a cost analysis to verify.

Redundant HVAC Systems / Units. In accordance with UFC 3-410-01, Section 3-7.4 “Redundant Systems”, provide redundancy when an HVAC system failure / replacement of equipment would disrupt critical mission or would result in unusually high repair costs.

Mechanical Yard / Equipment Enclosures. If enclosed walls are required, ensure the walls have louvers or penetrations to provide adequate air circulation to outdoor units. Provide bollards where applicable to prevent vehicular damage to outdoor units. In accordance with UFC 4-010-01, Section 3-3.6 “Enclosures”, if mechanical equipment provides the opportunity for concealment, they must be fully enclosed. Enclosures must have four sides and a top. Openings in screening materials and gaps between the ground and screens or walls making up an enclosure must be less than 6 in (150 mm). Opportunity for concealment is defined as the ability to place a 6-in explosive

LIN, RAYMOND C CIV USAF AMC 60 CES/CEOER

List applicable HVAC & EMCS standards at beginning of section for easy reference device around the equipment so that it would not be visible from at least one side of the equipment.

Refer to UFC 4-010-01 for more details regarding this requirement.

D3010 ENERGY SUPPLY

D301002 GAS SUPPLY SYSTEM

Natural Gas Meters. Provide meters with dial (analog) readouts/display. Integrate the meters with the existing base Advance Meter Reading System (AMRS). The Air Force Meter Data Management Plan has additional details and requirements. The AMRS is monitored by the base’s Energy Manager; but not by the Energy Management Control System (EMCS).

D301005 SOLAR ENERGY SUPPLY SYSTEMS

Solar Energy. Use solar energy technologies if shown to be cost effective via life cycle cost analysis. This would include solar water heaters and photovoltaic panel technologies.

D3020 HEAT GENERATING SYSTEMS

Heat Load Calculations. Provide heat load calculations (including all assumptions used) to the government to justify equipment selection. For outdoor heating design temperature use the 99% occurrence temperature as recorded by the 14th Weather Squadron data in accordance with UFC 3-400-02.

D302001 BOILERS

Preferred Manufacturer. The preferred boiler manufacturer is Peerless. The alternate manufacturer is Thermal Solutions. Standardizing equipment provides Travis AFB with cost saving opportunities and ease of system operations & maintenance (O&M). Select energy star rated models when possible.

Critical facilities. Facilities on the Contingency Response Plan (CRP) or with a Mission Dependency Index (MDI) greater than 85 require hot water system with redundancy when possible and not cost prohibitive. Confirm with government prior to preliminary design.

Condensate Neutralization. Ensure that the boiler has an internal condensate neutralization kit. If not, the design shall call out the method of condensate neutralization.

Condensing Boilers. For condensing boilers, the onset of condensing occurs with an Entering Water Temperature (EWT) of 130 deg F, but maximum efficiency occurs at around 100 deg F or lower. Ensure that the drawing schedule reflects this temperature range to achieve the energy efficiency of the condensing boiler.

Multiple Boilers. If multiple boilers are used size each boiler to 65% of the total load per UFC 3-410-01, Section 4-2.9.2 “Addition – Section 1004.2 ‘Installation’”.

Boiler for Indirect Water Heater. If boiler will be used for both space heating and domestic water heating (DWH), select a modulating boiler to avoid short cycling in summer months when only DWH will be in use. Consider this application in housing facilities such as the dorms or Temporary Lodging Facility (TLF).

D302003 FUEL-FIRE UNIT HEATERS

Warehouses and Hangars. Avoid fuel-fire unit heaters in warehouse and hangar bay zone types. Use Infrared Radiant (IR) heating systems.

Infrared Radiant (IR) Heaters. IR heaters shall operate during the heating season only. Units shall be monitored and controlled remotely by the base EMCS frontend / operators’ workstation.

Provide winter / summer mode control point (adjustable), Heating Outside Air Temperature Lockout (HTGOA-LKT) point (adjustable), so, EMCS can turn on the IR units when outside air temperature drops below setpoint (adjustable). The initial setpoint should be 60 deg. F.

IR Heaters Door Interlock Switch. For garage, warehouse, hangar bay zone types, provide interlock switch on the exterior door(s) (e.g., vehicle roll-up, hangar doors) to automatically disable IR heater operation when doors are open, regardless of zone occupancy and season.

The EMCS frontend / operators’ workstation shall be able to remotely override the interlock switch.

D3030 COOLING GENERATING SYSTEMS

Cooling Load Calculations. Provide cooling load calculations (including all assumptions used) to the government to justify equipment selection. For outdoor cooling design temperature use the 1% occurrence temperature (or, when justified, the .4% occurrence temperature) as recorded by the 14th Weather Squadron data in accordance with UFC 3-400-02.

Multi-stage Cooling. Use equipment capable of multi-stage cooling to avoid short cycling during moderate temperatures.

Mechanical Room Ventilation. In accordance with UFC 3-410-01, Section 3-6.1 “Facility Air Conditioning Eligibility”, mechanical rooms are not eligible for air conditioning. Utilize natural or mechanical ventilation in lieu of air conditioning to meet design temperature requirement.

D303001 CHILLED WATER SYSTEMS

Air Cooled Chiller. Select air-cooled chillers where possible. Avoid water-cooled chillers.

Chiller Manufacturer. The preferred chiller manufacturer is Carrier. Standardizing chiller equipment provides Travis AFB with cost saving opportunities and ease of system operations & maintenance. Check with the Requirements and Optimization (R&O) office for the latest class Justification and Approval (J&A) documentation authorizing all chiller purchases be Carrier branded. Ensure that the contractor adheres to this requirement or submits a waiver with acceptable justification for using another chiller brand for a specific application. Ensure that the HVAC shop and appropriate stakeholders and leadership sign off on this exception.

Critical Facilities. Facilities listed on the CRP or have MDI greater than 85 require chilled water system with redundancy when possible and not cost prohibitive. Chilled water systems that serve critical server rooms or other critical equipment should be designed with 100% redundancy.

Variable Cooling Load Applications. For applications where the internal cooling load could vary depending on facility usage, consider using a chiller with a digital scroll compressor. The capacity of these compressors can vary between 10% and 100%. If digital scroll compressor cannot be used, consider installing a buffer tank with the chiller to ensure that during times of low load the chiller will not short cycle. For example, many Carrier chillers will offer a built-in buffer tank as a feature of the chiller.

Chiller Refrigerant. When installing a new chiller, ensure that it uses the latest EPA-approved refrigerant.

Clearance. Ensure that is sufficient clearance space around the chiller to allow access for maintenance per the manufacturer’s requirements.

Enclosures. Enclosures / walls surrounding chillers shall have louvers or penetrations to ensure the chiller receive proper airflow to function in accordance with manufacturer’s requirements.

Electrical Supply. Ensure that the electrical supply to the chiller is the appropriate voltage. A separate disconnect for the power supply shall be required to isolate the chiller for maintenance outages.

Freeze Protection. Include freeze protection for all chillers installed at Travis AFB. For the month of January, the 99% Temperature average is 29 deg. F which is below freezing.

Low Flow Sensor. Ensure that the low flow sensor is calibrated correctly during installation to avoid tripping the sensor, which will put the chiller into alarm.

D303002 DIRECT EXPANSION (DX) SYSTEMS

Computer Room Air Conditioning (CRAC). The preferred manufacturer for CRAC units is Liebert / Vertiv. Standardizing CRAC manufacture provides the cost-saving opportunities and ease of system operation & maintenance, and decreases outage times. Where possible, install hybrid CRAC units that have both chilled water coil and DX coil. Critical server equipment rooms should be designed with fully redundant systems that have the capability to run independent of the building’s primary cooling equipment. Provide humidity control for data center spaces.

DX Preferred Manufacturer. The preferred manufacturer for DX systems is Carrier.

Standardizing DX equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Variable Refrigerant Flow (VRF) Systems. Do not provide VRF systems. VRF systems are significantly more costly to maintain and troubleshoot. See UFC 3-410-01, Section 3-6.17 “Variable Refrigerant Flow (VRF) Systems” for further information.

Telecommunication / Server Rooms. Telecommunication and server rooms shall be provided with dedicated split direct expansion (DX) cooling units sized as required for 24 / 7 operation and year round (i.e., provide cooling during winter). Redundant systems shall be configured for lead / lag operation. Provide wired controller option for the indoor units.

D3040 DISTRIBUTION SYSTEMS

D304001 AIR DISTRIBUTION, HEATING, AND COOLING

Fan Array / Fan Wall. Install fan array / fan wall system (instead of single axial fan) for air moving equipment, especially where serving critical occupied areas. This system provides redundancy and ease of repair over single fan systems.

Dedicated Outside Air Systems (DOAS). See UFC 3-410-01, Section 3-3 “[For Air Force Projects Only] Ventilation Air” for DOAS requirements. A DOAS is required when replacing an existing DOAS. A DOAS is also required when the sum of the ventilation air into the facility is greater than 750 cfm and the 1% occurrence humidity ratio is above the indoor cooling load design dewpoint temperature of 57.9 deg. F. DOAS shall be provided with energy recovery devices in accordance with ASHRAE 90.1 (as referenced by UFC 3-410-01). When reheat is required to control indoor relative humidity, use energy recovery devices where feasible.

Outside Air (OSA) Intake. Refer to UFC 4-010-01 for more detailed requirements. If the OSA intake is not located within an enclosed equipment yard or courtyard, the OSA intake shall be located a minimum of 10 feet above ground level. Locate the OSA Intake on the north side of the facility and on the same side of the temperature sensor where possible.

Outside Air Intake Damper. On outside air intakes that serve normally occupied areas, provide low leakage dampers that will close when the Anti-terrorism / Force Protection (AT/FP) Emergency HVAC Shutdown button is pressed.

Outside Air Intake Clearance. Maintain required separation distances / clearances between fresh air intakes and exhausts.

Duct Sizing. Use one of the following methods to determine ductwork sizing: Equal Friction Method; Velocity Reduction Method; or Static Regain Method. If an alternative method is used specify in the Basis of Design.

Return Air Ductwork. In accordance with Unified Facilities Criteria (UFC) 3-410-01, Section 4- 2.6, provide fully ducted returns from occupied spaces for each zone to air handler on all HVAC systems. UFC 3-600-01 does not override this requirement.

Closets and Storage in Air-Conditioned Facilities. These areas must be either directly air conditioned (where greater than 50 sq. ft (4.6 sq. meters) of floor space) or be provided with exhausts to transfer conditioned air from adjacent spaces (less than 50 sq. ft (4.6 sq. meters) of floor space).

Duct Insulation / Lining. In accordance with UFC 3-410-01, Section 4-2.6.9 “Replacement – Sectio 604.1 ‘General’”, internal duct insulation is prohibited; insulation shall be external. Use fully ducted returns where practical and provide a path for return air from all rooms / zones in a facility. Acoustic duct liner is prohibited for sound and vibration control. Use double wall acoustic duct where sound attenuation cannot be accomplished by other methods, and where the duct is not serving occupancies that are sensitive to particulates.

Damper Actuators. Damper actuators shall be compatible with the existing HVAC controls:

Johnson Controls Metasys and Honeywell Enterprise Building Integrator. Standardizing damper actuator equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Fire Smoke Dampers. Fire Smoke Damper requirements are given in UFC 6-600-01. UFC 3- 410-01 also states that the locations and sizes of the access panels for smoke dampers should be specified on the drawings.

Access Panels. Provide access panels in ductwork upstream of VAV re-heat coils for maintenance. Indicate access panel locations and sizes of the access panels on as-built drawings.

Variable Air Volume (VAV) Designs. Comply with UFC 3-410-01 VAV requirements. For applications where equipment provides conditioned air to multiple spaces that have different functions or significantly different heating/cooling loads, incorporate additional VAVs and sensors into the design to allow for better temperature control of all zones. Do not oversize or undersize HVAC systems. Do not add safety factors in the load calculations for HVAC equipment selection. Perform heating / cooling load calculations to right-size equipment. This applies to both new construction and system replacements.

VAV Locations. When installing VAV terminals at heights exceeding 12 ft (3.6 m) above finished floor, provide special maintenance accommodations necessary to safely maintain and repair the VAV(s). Place permanent labels of VAV locations on ceiling grid. Also place a permanent label of the VAV on the sensors that are connected to the VAV.

VAV Manufacture. The preferred VAV manufacturer is Titus. Standardizing VAV manufacture provides the base cost saving opportunities and ease of system operation & maintenance.

Ductwork Security Grates. In secured areas that require security grates in the ductwork, ensure that airflow is not restricted. Perform air balance to verify that airflow meets design CFM Provide ductwork access panels on the upstream side of the grates to allow access for cleaning.

D304003 HOT WATER DISTRIBUTION SYSTEMS

Hot Water Pump Manufacturer. The preferred pump manufacturer is Bell & Gossett.

Standardizing hot water pump equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Pump Selection. Whenever possible, select end-suction pumps instead of inline pumps for hot water circulation. Install the pumps at ground level for easy access.

Redundancy. Install redundant circulating pumps if space is available. Configure the pumps to operate in lead-lag (primary-backup) configuration. The lead and lag pumps shall automatically alternate to balance the wear / operation evenly across the pumps and avoid excessive wear on a single pump.

Water Treatment – Design heating closed loop distribution piping to include chemical feeding system.

Underground Piping - Install below grade hot water piping in a trench when possible. Cover with removable trench plates for repair access.

Makeup Water Assembly. Below is a diagram of the recommended makeup water assembly configuration. This provide capability to monitor system water pressure.

D304004 CHANGE OVER DISTRIBUTION SYSTEMS

Two Pipe Systems. For new or replacement systems, do not install two pipe systems. For work on existing two pipe systems, the scope of work should include replacing the isolation valves or ensuring they are functioning properly.

D304006 CHILLED WATER DISTRIBUTION SYSTEMS

Chilled Water Pump Manufacturer. The preferred pump manufacturer is Bell & Gossett.

Standardizing chilled water pump equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Pump Selection. Whenever possible, select end-suction pumps instead of inline pumps for hot water circulation. Install the pumps at ground level for easy access.

Redundancy. Install redundant circulating pumps if space is available. Configure the pumps to operate in lead-lag (primary-backup) configuration. The lead and lag pumps shall automatically alternate to balance the wear / operation evenly across the pumps and avoid excessive wear on a single pump.

Water Treatment - Design chilled water closed loop distribution piping to include chemical feeding system.

Underground Piping - Install below grade chilled water piping in a trench when possible. Cover with removable trench plates for repair access.

Makeup Water Assembly. Below is a diagram of the recommended makeup water assembly configuration. This provide capability to monitor system water pressure.

D304007 EXHAUST SYSTEMS

Ventilation. Design all systems for proper ventilation in accordance with UFC 3-410-01, UFC 3-410-04, and ASHRAE 62.1 to maintain a safe and productive work environment. Provide calculations and justification to the government for ventilation air designs.

Mechanical Room Ventilation. In accordance with UFC 3-410-01, Section 3-6.1, “Facility Air Conditioning Eligibility”, mechanical rooms are not eligible for air conditioning. Utilize natural or mechanical ventilation in lieu of air conditioning to meet design temperature requirement.

Warehouse Cooling. Do not use mechanical cooling for warehouse applications unless approved in writing by the government. Use exhaust fans, louvers in combination with High Volume Low Speed (HVLS) fans to circulate air and provide convective cooling.

Exhaust Fan Controls. Connect exhaust fans to the base EMCS. The exhaust fan shall operate on an Occupancy Schedule that is adjustable by EMCS (See D305001 HVAC CONTROLS for Occupancy Schedule). The EMCS frontend / operator’s workstation shall be able to see fan status (on / off), fan failure / error alarm notifications, and sensed air flow (CFM).

D304008 AIR HANDLING UNITS

Air Handling Unit (AHU) Manufacturer. The preferred manufacturer for AHU units is Carrier.

The alternative manufacturer is Trane. Standardizing AHU equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

AHU Fans. For air moving equipment serving critical occupied areas, utilize fan array / fan wall technology, instead of single fan. This type of system provides redundancy and ease of repair.

AHU Outside Air Intake. Provide low leakage dampers on outside air intakes that serve normally occupied areas. The dampers shall close completely when the Anti-Terrorism / Force Protection (ATFP) Emergency HVAC Shutdown button is pressed.

AHU Economizer. In accordance with UFC 3-410-01, Section 3-7.3 “Economizer”; and ASHRAE 90.1, Ch. 6 “Heating, Ventilating, and Air Conditioning”, use economizers to increase energy conservation. Travis AFB is in an ASHRAE 3C Climate Zone (Marine), optimal conditions for economizers. Provide dry bulb economizer control, capable of providing 100% outside air to remove indoor heat load.

Maintenance Access. Design shall provide appropriate clearance to perform maintenance or repair.

Antiterrorism Force Protection. In accordance with UFC 4-010-01, Section 3-17 “Standard

16. Air Intakes” through Section 3-20 “Standard 19. Equipment Bracing”, if equipment enclosure does not meet specific design requirements, design outside air in-take at a minimum of 10 feet above ground level.

D3050 TERMINAL & PACKAGE UNITS

D305001 UNIT VENTILATORS

Natural or Mechanical Ventilation Requirements. In areas where mechanical or natural ventilation may be feasible, evaluate the use of these methods in lieu of other air conditioning methods to meet interior design conditions. Ambient noise levels and the availability of prevailing winds should be addressed in the evaluation. Include the effect of outdoor humidity levels.

D305003 UNIT HEATERS

Infrared Radiant (IR) Heaters. IR heaters shall operate during the heating season only. Units shall be monitored and controlled remotely from the EMCS frontend / operators’ workstation.

Provide winter / summer mode control points (adjustable) and Heating Outside Air Temperature Lockout (HTGOA-LKT) point (adjustable). This will enable EMCS turn on the IR units when outside air temperature drops below setpoint (adjustable). The initial setpoint should be set to 60 deg. F.

IR Heaters in Garage, Warehouse & Hangar Bay Zones. Provide interlock switch on the exterior door (e.g., vehicle roll-up, hangar doors) to disable IR heater operation when the doors are open, regardless of occupancy or winter mode status.

D305003 FAN COIL UNITS

Accessibility and Maintainability. Fan coil units located at heights exceeding 12 ft above finished floors require special maintenance accommodations, such as, sufficiently sized access panels, adequate clearance around fan coil units, ladders, walkways, and/or platforms to safely maintain and repair the units.

Ductless Split Fan Coil (DFC) Unit Condensate. Provide condensate pumps in the cooling units if the condensate cannot gravity drain to a nearby drain.

Ductless Fan Coil Units. Provide wired controller option for the indoor unit. This eliminates the need for battery maintenance and hazardous waste disposal. If redundant system is required, configure the units to operate in lead-lag (primary-backup) configuration. The lead and lag units shall automatically alternate to balance the wear / operation evenly across the units and avoid excessive wear on a single unit. Failure / error in any unit shall automatically send an alarm notification to the EMCS frontend / operators’ workstation.

D305005 ELECTRIC HEATING

Electric Heating. In accordance with UFC 3-410-01, Section 3-7.6 “Electric Resistance Heating”, do not use electric resistance for heating or reheat except where life cycle cost is effective.

D305006 PACKAGE UNITS

Packaged Unit & Split System Manufacturer. The preferred manufacturer for package units and split systems is Carrier. The alternate manufacturer is Trane. Standardizing equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Rooftop Package Units (RTUs). Avoid RTUs when possible. RTUs expose maintenance personnel to fall hazards and are often difficult to access for routine maintenance. For facilities with existing RTUs, evaluate the feasibility of locating new package units on ground level.

Package Unit Economizer. In accordance with UFC 3-410-01, Section 3-7.3 “Economizer”;

and ASHRAE 90.1, Ch. 6 “Heating, Ventilating, and Air Conditioning”, use economizers to increase energy conservation. Travis AFB is in an ASHRAE 3C Climate Zone (Marine), optimal conditions for economizers. Provide dry bulb economizer control, capable of providing 100% outside air to remove indoor heat load.

Air Intake. For package units that serve normally occupied zones, ensure the outside air intake(s) have low leakage dampers that will close when the AT/FP Emergency HVAC Shutdown button is pressed.

Fans. Use fan array / fan wall systems where feasible. Otherwise, use beltless direct-drive fans. For example, Carrier offers EcoBlue beltless fan technology many new RTU products.

Refrigerant. Ensure that the latest EPA-approved refrigerant is used for the package unit.

Energy Efficiency. Ensure that all package units and split systems adhere to the minimum energy efficiency ratings (i.e. SEER / EER / IEER) listed in Table 6.8.1-1 of ASHRAE 90.1.

Higher efficiency units are preferred.

D3060 CONTROLS AND INSTRUMENTATION (HVAC)

D305001 HVAC CONTROLS

HVAC Direct Digital Controls (DDC). In accordance with UFC 3-410-01, Section 4-2.3.5 “Replacement – Section 309 ‘Temperature Control’, Section 309.3 “Networked Controls”, an existing base Energy Management Control System (EMCS) network is available for interface.

Install a BACnet HVAC DDC system to provide seamless integration with existing base EMCS network. Update the existing server and operators’ workstation graphical user interface and software programming to meet new design and incorporate all sensors and devices. As of 2025, Travis AFB utilizes two control manufacturers listed below. Reach out to EMCS for the latest specifications on the networks.

Johnson Controls, Inc. (JCI) Metasys:

Software: Metasys Version 10.1

Graphics: Metasys User Interface (MUI) Location: Bldg. 877 EMCS Control Room

Honeywell Controls Enterprise Buildings Integrator (EBI):

Software: Enterprise Buildings Integrator (EBI) Version R600.1 Location: Bldg. 877 EMCS Control Room

Do not mix control systems within a facility (i.e., within a facility, use either JCI or Honeywell controller / equipment, but do not use both or a mixture). When a facility has a single control manufacturer, the equipment is easier to maintain, troubleshoot, and repair.

HVAC Control Points – Provide the control points described and listed in UFC 3-410-01, Section 4-2.3.5 “Replacement – Section 309 ‘Temperature Control’”, Section 309.4 “Minimum Control Points”, and Appendix D. Develop point schedules and required naming conventions in accordance with UFC 3-410-02. Provide temperature set points, outside air heating / cooling lockout set points. All schedules and set points shall be adjustable by EMCS from the frontend / operators’ workstations.

DDC Drawings – Follow the drawings requirements listed in UFC 3-410-01, Section 5 “Design Analysis and Drawing Requirements”. Provide diagrams showing system control schematics, such as, N2 / FC communication buss layout between control devices and end of line (EOL).

Describe the system architecture schematic. Specify the operating modes and sequence of operation on the drawings for each HVAC system. Show controller functions, such as, normally open (NO), normally closed (NC), common (C), etc. List all set points, graphic points, schedules, alarm points, input / output points.

Occupancy Schedule Control - The most cost-effective method to maintain zone temperatures on Travis AFB is to enable / operate HVAC systems when facilities are occupied. HVAC systems shall automatically operate when facilities are occupied; and automatically shut down when facilities are unoccupied. An occupancy schedule includes the time of day and day of the week on an 8-day (7 standard days + holiday) week. The occupancy schedule shall be adjustable by EMCS from the frontend / operators’ workstations. Set the initial occupancy schedule as follows:

• Occupied (On): Mon-Fri / 0600-1800 hrs

• Unoccupied (Off): Mon-Fri / 1800-0600 hrs

• Unoccupied (Off): Sat-Sun.

Temporary Occupancy Override - If temporary occupancy override control is required, provide a push button type temporary override switch at the facility to automatically enable / operate the HVAC system during normally unoccupied hours for a predetermined time. Set the initial temporary override timer to 120 minutes. Press of the override switch shall reset the timer to 120 minutes. At the end of the timer (while during unoccupied hours), the HVAC system shall automatically shut off. The timer shall be adjustable by EMCS.

Intermittent Occupancy – In accordance with UFC 3-410-01, Section 3-6.4, for zones / facilities with intermittent occupancy, evaluate opportunities such as thermal storage systems and demand controlled ventilation by occupancy sensors. For example, the local VAVs could be integrated with motion and lighting control sensors.

Zone Demand Control / Optimal Start - Do not program DDC with zone demand control / optimal start. Use occupancy schedule.

CO2 Sensor Control – Do not use CO2 sensors for ventilation control. In accordance with UFC 3-410-01, Section 4-2.4.1, the use of CO2 sensors for ventilation control is prohibited without AHJ approval.

Zone Temperature Sensors – Install zone temperature sensors to enable EMCS to remotely monitor and control the zone temperature. In most situations, zones shall not be controlled by a local thermostat.

Outside Air Sensors. Provide local (at the facility) outside air sensor. Install the sensor on the north facing side of the facility and protect it from the elements.

High Temperature Alarm – The system shall automatically send an alarm / notification to the EMCS frontend / workstation when zone temperature rises above the temperature set point.

The initial alarm set point shall be 5 deg. F. The alarm set point shall be adjustable from the EMCS frontend / workstation. The alarm shall indicate the sensed temperature (and temperature difference) and the zone location.

Emergency Shutdown Switch – In accordance with UFC 4-010-01, Section 3-19 “Standard 18.

Emergency Air Distribution Shutoff,” provide emergency shutoff switch at the facility to close dampers leading to the outside. The switch shall be push type with a clear protective cover, and be clearly labeled. Activation of the switch shall send alarm notification to the base EMCS frontend / operators’ workstation located in Bldg. 877. Perform function test prior to beneficial occupancy date (BOD).

Actuator Manufacturer - The preferred manufacturer for actuators is Belimo. Standardizing actuator equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance.

Damper Actuators – Ensure damper actuators are compatible with the existing JCI Metasys or Honeywell EBI system that is predominantly used for that facility.

Domestic Water Heater Temperature Sensors - Provide domestic hot water supply temperature monitoring point, low temperature alarm to EMCS.

Data Centers / Server / Telecomm Rooms – Travis AFB standard operating temperature set point for equipment cooling is 74 deg. F, unless otherwise specified by equipment manufacturer’s guidance or tenant organization’s specifications.

Economizer Control. Systems designed with economizers shall be programmed to utilize outside air (free cooling) when outside air temperatures are low enough to maintain facility occupied temperature set points. Provide supply air temperature control reset based on return air temperature.

Outside Air Sensors – Provide and install outside air sensor(s) on the north facing side of the facility. Protect the sensors from the elements.

Variable Frequency Drive (VFD) Manufacturer - The preferred manufacturer for VFDs is ABB.

Standardizing VFD equipment provides Travis AFB with cost-saving opportunities and ease of system operations & maintenance. Provide bypass option to eliminate single point of failure of critical air moving equipment.

DDC Network Control Devices - Provide pre-programmed stand-alone single or multiple loop microprocessor PID controllers to monitor / control mechanical equipment and subsystems.

Configure all network / equipment controllers to operate independent of the base EMCS Server / OWS. Install network controllers in a lockable waterproof enclosure within the main indoor mechanical room. Do not install HVAC DDC Network Controller in a Telecommunication Room.

IAW UFC 3-580-01, Telecommunications Rooms shall be a dedicated space not shared with other non-telecommunications functions (i.e., DDC Controls, Electrical, Plumbing, Lighting Controls, etc.).

D306003 PNEUMATIC CONTROLS

Pneumatic Controls - Do not select pneumatic controls for new construction projects. For facilities with existing pneumatic control systems, the scope of work shall include replacement of pneumatic controls with Direct Digital Controls (DDC). Pneumatic control systems are costly to maintain and repair.

D3070 SYSTEMS TESTING & BALANCING

General Testing, Adjusting, and Balancing (TAB) Requirements - Testing, Adjusting, and Balancing (TAB) is a critical part of building climate control. Proper temperature and humidity control cannot be achieved if TAB is not done properly with the appropriate coordination between the control systems contractor and base EMCS shop. Prior to final acceptance of new or modified HVAC systems, TAB of the systems shall be performed by an independent third party in accordance with Associated Air Balance Council (AABC) standards. The TAB contractor shall be included in the project throughout the planning and installation phases; and shall be in close contact with the control systems contractor throughout the project. The control systems contractor shall provide the data points needed by the TAB contractor.

Modifications to Existing HVAC System – When portions of an existing HVAC system is modified, TAB shall be performed for the entire HVAC system (existing system plus the modifications).

D307001 WATER SIDE TESTING & BALANCING (HEATING & COOLING)

Boiler or Chiller Water Side Testing - A complete Testing, Adjusting, and Balancing (TAB) of the boiler or chiller system shall be completed by a third party prior to the BOD of the equipment. The basic test measures refrigeration equipment by taking basic readings of water flow, temperature entering and leaving the heat exchangers, water pressure drop, and electrical measurements for the compressor. The equipment nameplates shall be recorded. Capacity testing is beyond the basic testing requirements but shall be performed if specified in the design documents. The equipment manufacturer’s representative shall be present for all efficiency tests to make any adjustments to the equipment controls.

D307002 AIR SIDE TESTING & BALANCING (HEATING, COOLING, & EXHAUST)

TAB Duct Design Requirements - Ensure that duct design incorporates all features necessary to accommodate testing, adjusting, and balancing (TAB). TAB specifications shall call for a

+10% / -0% on the outdoor air supply and a +0% / -10% on the exhaust systems to prevent inadvertent building negative pressure after TAB.”

TAB Flow Rates - TAB contractors shall not be allowed to sum the inlets or supplies to exhaust, return, and supply systems without accurately measuring the total flow rate at the fans for comparison and determination of approximate leaking rates.

VAV TAB - The TAB contractor shall provide the K factor (correction factor) for VAV terminal units in their TAB report where applicable.

Vibration Testing - Provide vibration testing for all new equipment as well as for any existing equipment that interfaces with a modified HVAC system in the TAB report.

D307003 HVAC COMISSIONING

Commissioning – Commissioning, re-commissioning, or retro-commissioning of HVAC systems shall be performed in accordance with UFC 1-200-02 and UFC 3-410-01. After the completion of the TAB activities and prior to the final acceptance of the HVAC systems, provide a minimum of four days of trends measured with data loggers or from EMCS while equipment is in fully automatic mode to ensure that all systems are working properly under all conditions.

Trend requirements are given in UFC 3-410-01, chapter 3-6.15.

D3090 OTHER HVAC SYSTEMS AND EQUIPMENT

D309001 GENERAL HVAC CONSTRUCTION ITEMS

Copper Piping - For all below grade copper piping, all joints shall be brazed. Soft soldering joints shall not be permitted.

D40 FIRE PROTECTION

Gaskets - Provide stiff gaskets that will resist blowout due to pressure surges. Gaskets must be made of aramid/inorganic fibers. Gaskets must be resistant to water, foam, and fuels. An example of gasket that is used is Garlock 700 1/8-in thickness.

D4010 FIRE ALARM AND DETECTION SYSTEMS

D401001 FIRE ALARM DISTRIBUTION

Design Qualifications - This fire alarm distribution system shall be designed by a NICET level III technician and stamped by a registered fire protection engineer (FPE). The Travis Fire Prevention Office reserves the right to ask for proof of these certifications at any time during the design or installation of the system. The designer of record shall have at least five years of recorded experience. If a separate firm or company is used for the design but not installation of the system, then the designer or representative from the designer shall be at the final acceptance test to answer any design questions.

Fire Alarm Control Panel (FACP) - In facilities that are not required to be protected by a fire suppression system, a fully addressable and programmable alarm system consisting of smoke and heat detectors, manual pull stations and notification devices are required.

Fire alarm systems shall be non-proprietary. Non-proprietary means that the Fire Alarm Shop will be able to maintain the systems in-house without purchasing additional tools/software/licenses nor requiring onsite visits from manufacturer’s service representatives/contractors/vendors. Systems from manufacturers that offer free training and free technical advice for a year shall not be treated as non-proprietary.

If a new system will be installed in a facility with an existing system, the contractor/designer shall be responsible for validating that the new system and existing system are compatible. If there is no way for the two systems to be compatible system, the contractor shall be responsible to marry the two systems together to work in conjunction. It may be easier to replace the old system with the new system.

For base…