Att10_260003_Design_Narrative.pdf

Design Narrative_v3_05/02/23

Design Narrative

REPAIR ROOF, ELECT, HVAC & RESTROOMS,

B4019

Project Number: WWYK260003 Work Order: 17160132

Tinker Air Force Base, Oklahoma

March 11, 2026

Prepared By:

Tepa Companies 7535 5th Street, Building 400

Tinker AFB, OK 73145

Design Narrative

WWYK260003 - REPAIR ROOF, ELECT, HVAC & RESTROOMS, B4019

1/March 18, 2026

CONTENTS

1. Overview

2. Applicable Codes and Standards

2.1 General

2.2 Civil

2.3 Architectural

2.4 Structural

2.5 Mechanical / Plumbing

2.6 Electrical

2.7 Fire Protection

3. Civil Design Narrative

3.1 General Design Parameters and Assumptions

3.2 Civil Demolition

3.3 Civil / Site Improvements

4. Architectural/Roofing Design Narrative

4.1 Architectural Existing Conditions/Demolition

4.2 Architectural Construction

4.3 Roofing design narrative

5. Structural Design Narrative

5.1 General Design Parameters and Assumptions

5.1.1 Concrete and Reinforcing Steel

5.1.2 Reinforced Concrete Design

5.1.3 Structural Steel

5.1.4 Steel Design

5.1.5 Structural Loads

5.2 Structural Demolition

5.3 Structural Construction

6. Mechanical Design Narrative

6.1 General Design Parameters and Assumptions

6.1.1 Elevation, Latitude/Longitude, Climate Zone

6.1.2 General Indoor Temperature/Relative Humidity Parameters

6.2 Building HVAC Loads

6.3 Indoor Air Quality

6.4 Validation of Existing HVAC Systems

6.5 Demolition

6.6 Mechanical Construction

6.6.1 Building Pressure

6.6.2 Air Distribution

6.6.3 Ductwork

6.6.4 Piping

6.6.5 Vibration Control

Design Narrative WWYK260003 - REPAIR ROOF, ELECT, HVAC & RESTROOMS, B4019

2/March 18, 2026

6.6.6 Controls

6.6.7 System Commissioning, Testing and Balancing

7. Electrical Design Narrative

7.1 General Design Parameters and Assumptions

7.2 Electrical Demolition

7.3 Electrical Construction

8. Fire Protection / Life Safety Design Narrative

8.1 General Design Parameters and Assumptions

8.1.1 Jurisdictional Authority

8.1.2 Fire Protection Approach

8.2 Building Use and Occupancy

8.2.1 Existing Occupancy Classification

8.3 Fire Protection Systems

8.3.1 Automatic Sprinkler Protection

8.3.2 Fire Extinguishers

8.3.3 Fire Alarm / Mass Notification

8.4 Means of Egress

8.5 Safeguards During Construction

8.5.1 Fire Protection Impairment Supervision

9. Communications Design Narrative

APPENDICES

Appendix A: Acronyms and Abbreviations

Appendix B: Civil Calculations and Cutsheets

Appendix C: Architectural Calculations and Cutsheets

Appendix D: Structural Calculations and Cutsheets

Appendix E: Mechanical / Plumbing Calculations and Cutsheets

Appendix F: Electrical Calculations and Cutsheets

Appendix G: Fire Protection Calculations and Cutsheets

3/March 18, 2026

1. Overview Renovation of existing building to accommodate new office occupancy. Remove and replace all HVAC ductwork and exterior unit, new electrical overhead power to feed cubicles, new fire alarm panel with mass notification devices, remove two overhead doors and infill with new exterior skin, remove exterior door and frame and infill with new exterior skin, add new door and frame opening on the east facing exterior wall (structural modifications required to existing steel structure), adding two new 4’ x 4’ windows on east facing wall, and patching and repairing section of roof that show signs of leakage. Adding new sidewalk from the new east entry all the way to the upper parking area, with two curb cuts meeting ABA accessibility guidelines.

New systems, furniture and cubicle layout plans are to be provided by the USER.

Communication lines to be submitted by CIPS request by the USER.

Add alternates will be to add two 4’ x 4’ windows to the new infill where the two overhead doors will be removed.

2. Applicable Codes and Standards

2.1 General

• IBC International Building Code (as amended by UFC 1-200-01)

• IEBC International Existing Building Code

• NFPA 101 Life Safety Code

• TAFB Facility Standard

• UFC 1-200-01 DoD Building Code

• UFC 4-010-01 DoD Minimum Antiterrorism Standards for Buildings

2.2 Civil

• SDDCTEA Pamphlet 55-17 Better Military Traffic Engineering (2016)

• UFC 3-201-01 Civil Engineering

• UFC 3-250-01 Pavement Design for Roads and Parking Areas

2.3 Architectural

• ABA Architectural Barriers Act Standards

• UFAS Uniform Federal Accessibility Standards

• UFC 3-101-01 Architecture

• UFC 3-110-03 Roofing

• UFC 3-120-10 Interior Design

• UFC 3-190-06 Protective Coatings and Paints

• UFC 3-201-02 Landscape Architecture

2.4 Structural

• ACI 318-19 Building Code Requirements for Structural Concrete and Commentary

• AISC 360-22 Steel Construction Manual, 16th Ed.

4/March 18, 2026

• ASCE 7-22 Minimum Design Loads for Building and other Structures

• AISI S100-16 W/ S2 (20) North American Specification for the Design of Cold-formed Steel

Structural Members

• UFC 3-301-01 Structural Engineering

2.5 Mechanical / Plumbing

• ANSI/ASHRAE/ Peak Cooling and Heating Load Calculations in Buildings Except ACCA Standard 183 Low-Rise Residential Buildings

• ASHRAE 55 Thermal Environmental Conditions for Human Occupancy

• ASHRAE 62.1 Ventilation for Acceptable Indoor Air Quality

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

Buildings

• IECC International Energy Conservation Code

• IMC International Mechanical Code (as amended by UFC 3-410-01)

• IPC International Plumbing Code (as amended by UFC 3-420-01)

• TAFB Mechanical Standard

• UFC 1-200-02 High Performance and Sustainable Building Requirements

• UFC 3-401-01 Mechanical Engineering

• UFC 3-410-01 Heating, Ventilating, and Air Conditioning Systems

• UFC 3-410-02 Direct Digital Control for HVAC and Other Building Control

Systems

• UFC 3-420-01 Plumbing Systems

• UFC 3-450-01 Noise and Vibration Control

2.6 Electrical

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

• NFPA 70 National Electrical Code

• NFPA 780 Standard for Installation of Lightning Protection Systems

• TAFB Electrical Standard

• UFC 3-501-01 Electrical Engineering

• UFC 3-520-01 Interior Electrical Systems

• UFC 3-530-01 Interior and Exterior Lighting Systems and Controls

• UFC 3-575-01 Lightning and Static Electricity Protection Systems

• AFMAN 32-1065 Grounding and Electrical Systems

2.7 Fire Protection

• NFPA 1 Fire Code

• NFPA 10 Standard for Portable Fire Extinguishers

• NFPA 13 Standard for the Installation of Sprinkler Systems

5/March 18, 2026

• NFPA 51B Standard for Fire Prevention during Welding, Cutting, and Other Hot Work

• NFPA 70 National Electric Code

• NFPA 72 National Fire Alarm Code

• NFPA 90A Standard for the Installation of Air-Conditioning and Ventilation

Systems

• NFPA 241 Standard for Safeguarding Construction, Alteration, and

Demolition Operations

• TAFB Fire Protection Standard

• DAFI 32-2001 Fire and Emergency Services (F&ES) Program

• UFC 3-600-01 Fire Protection Engineering for Facilities

• UFC 3-601-02 Operation and Maintenance: Inspection, Testing and

Maintenance of Fire Protection Systems

• UFC 4-021-01 Design and O&M: Mass Notification Systems

• ECB 2018-17 New Requirements for Visual Notification for Mass Notification

Systems

6/March 18, 2026

3. Civil Design Narrative The civil requirements for the project include (but are not limited to):

Construct a 5’ wide sidewalk that provides an ABA compliant path that connects the remote parking areas to B4019. Additional improvements include tree trimming and drainage improvements that includes the construction of a French drain and regrading away from the building.

3.1 General Design Parameters and Assumptions

Parking for the building includes a small adjacent north parking lot and two additional remote parking lots. Six oversized truck length parking spaces are present in the north parking lot. There is no existing sidewalk linking these remote parking lots located to the south of B4019.

3.2 Civil Demolition

A paved parking area is on the north side, trees are in a grass area on the east side and south side, the grade slopes towards the building on the south side of building, and a grass area is on the west side.

ii. An asphalt drive slopes toward the building at the overhead door on the south side.

iii. Parking for the building includes a small adjacent north parking lot and two additional remote parking lots. Six oversized truck length parking spaces are present in the north parking lot.

There is no existing sidewalk linking these remote parking lots located to the south of B4019.

3.3 Civil / Site Improvements

Layout and restripe existing north parking lot to accommodate three (3) standard parking stalls and one (1) ABA Van-Accessible space. Parking bumpers and signage shall be provided to meet ABA compliance.

Construct a trench drain at the southwest corner of the building and re-grade the asphalt drive to mitigate water drainage away from the building.

Construct a 5-foot wide 4” thick PCC sidewalk for pedestrians from the remote parking lots to building 4019.

Construct ABA compliant curb ramps and a crosswalk in accordance with SDDCTEA Pamphlet 55- 17 along the proposed concrete sidewalk at the access road crossing.

Regrade the soil along the building perimeter walls to achieve a minimum 5 % slope (1:20 away from the building for at least 10 ft in accordance with IBC 2024, 1804.4 Site Grading.

4. Architectural/Roofing Design Narrative This Metal building was constructed circa 2004. It is situated on a sloped grassed area with a few cedar trees on south side and deciduous trees located on east side. This building currently has an open warehouse storage area, small office with a window air-conditioning unit, and two restrooms. A metal building structure with vinyl liner is exposed to the interior of the building.

4.1 Architectural Existing Conditions/Demolition

Existing: The metal roof includes a gutter and downspout system. There are four downspouts on the north and south elevations. The north downspouts empty onto the paving, which slopes to

7/March 18, 2026 the north. The south downspouts empty onto the grass and do not drain away from the building.

Since there are not any splash blocks along the south elevation the soil has eroded away from these downspout locations. Prepare for new spashblocks.

Existing, to remain: The building envelope includes walls that consist of an EIFS wall insulation system with a 36-inch-high face brick wainscot that wraps the building perimeter. There are multiple black stains [mold or mildew] on the face of the existing EIFS on the exterior walls.

Existing, to remain: A small awning covers each of the two exterior hollow metal man doors on the north elevation and one door on the south elevation. The doors have a glass vision panel, push bar and lever hardware.

Existing, to remain: Three sliding windows are located on the north elevation.

Existing/Demolition: The interior open bay area is an exposed metal building structure with an exposed vinyl liner and an exposed concrete floor. The building insulation consists of a roof and wall insulation with a vinyl liner faced batt insulation system. The metal building as-builts are not available. Therefore, we are unable to confirm if the vinyl liner meets Class A requirements.

Demolish the existing wall insulation, ceiling insulation, and vinyl liner. Prepare for replacement.

Existing/Demolition: Two overhead doors are located on the north and south elevation. There is a paved parking area sloping away from the north overhead door. However, the paved drive for the south overhead door slopes toward door, allowing water to enter the building during rain events. Remove two overhead doors and one man-door (south side). Prepare for infill.

Existing/Demolition: The interior painted drywall partitions extend approximately 10 feet high.

The acoustic ceiling tile, 2x2 grid, is approximately 8 feet high within these rooms. There is no existing rubber base on these drywall partitions. Clean the existing drywall partitions. Prepare for finishes.

Demolition: Remove a section of metal framed wall with face brick wainscot at east side at location of new entry door. Prepare for new entry door.

Existing/Demolition: The restrooms have hollow metal doors with push hardware and closers. The ABA floor transition is missing. The floor has 8x8 ceramic tiles. The walls have a 4x4 ceramic tile wainscot with painted drywall above. The toilet partitions are metal. The lavatory has a sloped pipe enclosure below. There are grab bars present in the handicap stall. There is a framed mirror above the lavatory. The restroom accessories are not TAFB standard. Remove existing restroom accessories, prepare drywall for new finishes and accessories.

4.2 Architectural Construction

Floor Markings: Provide floor marking at fire alarm system, fire sprinkler riser, electrical panels, and data system locations to provide required clearance from these systems.

Entry Door: Provide new 3 foot by 7-foot hollow metal entry door with vision lite and hollow metal frame on east wall. Provide panic hardware with Best Lock core. TAFB Lock Shop to key core. Provide 5-foot x 5-foot concrete stoop at entry door. Refer Structural Design Narrative 5.3.

Splash Blocks: Provide splash blocks at each downspout.

Metal Building Insulation and Liner: Replace the insulation and vinyl liner with new metal building insulation and liner, Class A as required by IBC 2024, 720.3 Insulation, at underside of roof (exposed ceiling) and interior walls.

Door Opening Infill: The two existing overhead doors and one man-door are to receive an insulated painted metal panel infill on metal framing. Provide R-13 batt insulation + R-6.5

8/March 18, 2026 continuous insulation, as required by IBC 2024, 720.3 Insulation. Seal and provide weatherstripping at the perimeter of the door infill. Color: SW 9102 Quinoa. Refer Structural Design Narrative 5.3.

Rubber Base: Install rubber base on drywall partitions within building. [Unless existing ceramic tile is existing.] Rubber Base: Roppe; Color: Black Brown 193.

Paint at Existing Interior Walls: Paint all drywall partitions within building. Gypsum Wallboard at Restrooms; Paint Color: SW 6099 Sand Dollar; Interior walls of Meeting Room and walls facing Open Office Gypsum Wallboard, Paint Color: SW 7064 Passive.

Hollow Metal Doors and Frames: Paint all hollow metal doors, interior and exterior. Sand, prime, and paint the doors. Protect existing hardware. Exterior Hollow Metal Frame, Paint Color: SW 7705 Wheat Penny; Interior Hollow Metal Frames.: Paint Color: SW 7067 City Scape; and Interior Facing Hollow Metal Frame in Restroom, Paint Color: SW 6101 Sands of Time.

Existing Tile Cleaning: Clean and sanitize all of the ceramic tile grout. Clean and sanitize the ceramic tile floor and the wall tile.

Restroom Accessories: Replace existing toilet accessories with TAFB standard accessories. VFCI [Vendor Furnished Contractor Installed] DRTC to provide Seat Cover Dispenser, Dual Tissue Dispenser, Roll Towel Dispenser, Soap Dispenser. Contractor To Install Accessories.

Windows: Provide new 4 foot by 4-foot hollow metal frame windows at east and south walls of southeast corner to match existing windows on the north face of the building.

4.3 Roofing design narrative

The existing metal roof has developed a leak that requires corrective action to prevent further water intrusion and potential damage to the building interior. In addition, several pieces of mechanical items penetrating the roof and should be removed, these items include but are not limited to; roof vents and penetrations. Once these items are removed, the remaining roof openings, penetrations, and support points must be properly patched and restored to maintain the integrity of the roofing system. All replacement materials must match the existing roof’s color, gauge, and panel profile to maintain uniform appearance and performance.

5. Structural Design Narrative The structural scope involves infilling an overhead door and entrance door on the southwest corner, infilling an overhead door on the northwest corner, adding a new entrance door on the east side, and adding (2) new windows in the conference room on the east face of the building.

5.1 General Design Parameters and Assumptions

5.1.1 Concrete and Reinforcing Steel

• Structural Cast-In-Place Concrete, Unless Otherwise Indicated: 4000 psi

• Concrete for Paving, Sidewalks, slab-on-grade and Other Flatwork: 4000 psi

• Cement: Type II or I/II for cast-in-place concrete.

• Reinforcing Steel (Deformed Bars): ASTM A615, Grade 60.

• Reinforcing Steel to Be Welded (Deformed Bars): ASTM A706, Grade 60.

• Anchor Bolts: ASTM F1554, Gr 36, Galvanized.

5.1.2 Reinforced Concrete Design

Design of Slab-On-Ground: Slabs-on-ground shall be designed in accordance with ACI 360R-10 and

ACI 318-19.

9/March 18, 2026

5.1.3 Structural Steel

• W and WT Shapes: ASTM A992 or ASTM A572, Grade 50, with special requirements per AISC Technical Bulletin #3.

• Other Rolled Sections and Plates: ASTM A36 or ASTM A572, Grade 50.

• Square or Rectangular Tubes (HSS): ASTM A500, Grade C.

• High Strength Bolts: ASTM A325, with compressible washer type direct tension indicators or twist of type tension control bolts.

• Anchor Bolts: ASTM F593, Type 304.

5.1.4 Steel Design

Structural steel design will be performed in accordance with the requirements of the American Institute of Manual Steel Construction (16th Edition), AISC 360-22.

5.1.5 Structural Loads

5.1.5.1 Dead Loads

Dead loads will be considered resulting from fixed construction, materials, and equipment. Dead loads will be determined and applied in accordance with ASCE 7-22, and other pertinent standards and vendor-supplied information.

5.1.5.2 Live Loads

Live loads are those loads produced by the use and occupancy of the building or structure, and do not include loads such as wind/seismic loads, rain loads, flood loads, or dead loads. Minimum uniformly distributed live loads will be as required by

ASCE 7-22.

5.1.5.3 Wind Loads

General: Wind loads for structural design of main wind force resisting systems and components and cladding shall be determined and applied in accordance with ASCE 7- 22, Directional procedure.

Wind Speed: The minimum 3-second gust design wind speed shall be determined from Figure 26.5 of ASCE 7-22. A basic wind speed of 109 mph will be appropriate for the project location.

Exposure Category: Building exposure classification C, as defined by ASCE 7-22, shall be used for this building.

Risk Category: Building risk category II, as defined by ASCE 7-22, shall be used for this building.

5.1.5.4 Load Combinations

Load combinations using strength design and service-level combinations shall be as defined in ASCE 7-22.

5.1.5.5 Seismic and Snow Loads

Seismic loads shall be determined in accordance with IBC 2024. The structure will be designed as Seismic Design Category of “B” based on the seismic parameters defined in

IBC 2024.

Snow loads shall be determined in accordance with IBC 2024. The ground snow load shall be 18 pounds per square foot.

10/March 18, 2026

5.2 Structural Demolition

Demolition is required to install a new door and (2) new windows on the east side of the building.

(6) girts and metal siding/EIFS will require removal to install new opening.

5.3 Structural Construction

Infill of the (3) door openings will require constructing 6” tall concrete curb with water stop to prevent water ingress which is a common occurrence on the southwest corner. Install new steel wind girts and attach to the opening jambs. New metal panel siding will be installed on the new girts with flashing as required, refer Architectural. New openings will require new steel jambs, header, and girts; match existing construction techniques at other openings. Attach jambs to existing foundations and limit interference of egress path. Refer to Architectural Design Narrative

4.3.2 Entry Door and 4.3.5 Door Opening Infill.

11/March 18, 2026

6. Mechanical Design Narrative The objective of this project is to bring B4019 up to code and modernize the buildings systems due to a change of occupancy and use. All mechanical systems serving the building will be removed and replaced.

6.1 General Design Parameters and Assumptions

6.1.1 Elevation, Latitude/Longitude, Climate Zone

Elevation, latitude, and longitude were taken from the 14th Weather Squadron (14 WS) website.

Climate and weather data below was taken from 2021 ASHRAE Fundamentals Chapter 14.

• Elevation: 1,290 ft.

• Latitude: 35.41 N

• Longitude: 97.39 W

• Climate Zone: 3

• Summer: 100°F DB/74°F WB

• Winter: 12°F

6.1.2 General Indoor Temperature/Relative Humidity Parameters

HVAC Design by Building Area

Area Designation

Design Temperature (°F) Relative Humidity (%)

Minimum Winter

Maximum Summer

Minimum Winter

Maximum Summer

Conference/Office 68 78 N/A 50

Classroom 68 78 N/A 50

Storage/Janitor Closet 68 78 N/A N/A

6.2 Building HVAC Loads

Load calculations should be performed using software which complies with ANSI/ASHRAE Standard 140. Occupancy loads, equipment and miscellaneous room loads will be coordinated with Tinker AFB and the Using Agency as the design progresses. Internal equipment gain will not be used as part of the heating load calculations (loads are not modeled to allow lowering of the base heating load). For the cooling load, people load is assumed at peak occupancy levels for each space and internal equipment gain is included.

6.3 Indoor Air Quality

Ventilation rates for all areas will be provided per ASHRAE 62.1-2016. Ventilation air will be provided by the new air handling units being installed under this project.

6.4 Validation of Existing HVAC Systems

Validation of existing HVAC systems was accomplished by review of existing plans and field observation of the HVAC systems serving the areas within the building where renovation work is taking place.

12/March 18, 2026

6.5 Demolition

Demolition includes but is not limited to the following:

(a) Demolish the existing RTU mounted on a mechanical pad on the east side of B4019.

(b) Demolish all existing controls associated with the existing system.

(c) Demolish all the existing ductwork inside and outside of B4019 along with all the diffusers.

(d) Demolish the four existing gas fired heaters suspended in B4019.

(e) Demolish the existing natural gas piping back to the building’s natural gas regulator.

(f) Demolish existing exhaust fans serving the building.

6.6 Mechanical Construction

(a) Design, provide, and install a new HVAC system to serve the building.

(b) Design, provide, and install a new DDC system to control the new HVAC equipment and report to the Honeywell EBI.

(c) Design, provide, and install a new exhaust system.

(d) Patch existing roof penetrations for equipment that has been demolished. This includes but not limited to the roof vents and penetrations.

6.6.1 Building Pressure

The building pressure will be designed to maintain a positive pressure in relation to the exterior and non-conditioned spaces. Toilet rooms, janitor closets, and similar spaces will be maintained negative with respect to adjacent spaces and will continue to be exhausted directly to the outside.

6.6.2 Air Distribution

All new diffusers will be selected for minimum pressure drop, efficient throw, and minimal sound characteristics. All new grilles will be selected for minimum pressure drop and minimal sound characteristics.

6.6.3 Ductwork

All ductwork upstream of VAV boxes will be rated for +4” WG. All ductwork downstream of VAV boxes will be rated for +2” WG. All outside air ductwork will be rated for -2” WG. All return/relief air ductwork will be rated for -2” WG. All exhaust air ductwork upstream of exhaust fans will be - 1” WG. All exhaust air ductwork downstream of in-line exhaust fans will be +1” WG. All supply ductwork will be provided with external wrap insulation. Exhaust and return ductwork within 20

ft. of an AHU or ERU will be lined for sound. All ductwork shall be SMACNA Seal Class A.

Fire, smoke, and combination fire/smoke dampers will be provided in new ductwork where needed as dictated by code.

6.6.4 Piping

6.6.4.1 Domestic Systems

Domestic cold and hot piping will be type L hard drawn seamless copper tube with leadfree soldered joints and fittings.

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All domestic cold and hot piping will be provided with fiberglass pipe insulation with all service jacket and self-sealing lap. Cold water piping insulation will be provided with vapor barrier jacket to prevent condensation. Piping exposed to exterior conditions or located within 8 FT of the finished floor will be provided with aluminum jackets.

Above and below ground sanitary/vent piping shall be standard weight cast iron soil pipe with corrosion protective coating inside and outside. Piping shall meet ASTM A74, NSF certified, and CISPI trademarked. All above ground sanitary/vent piping shall be no-hub. All below ground sanitary/vent piping shall be hub and spigot.

6.6.4.2 Natural Gas

Natural gas piping will be standard weight black steel with butt welded joints and fittings.

6.6.5 Vibration Control

New AHUs will be provided with appropriate vibration isolators to minimize vibration into building structure. Flexible connections will be provided on all duct connections to new AHU.

6.6.6 Controls

BACnet controls will be provided on new AHUs and VAV boxes. The direct digital controls will be tied into the base side Honeywell DDC system to allow monitoring and troubleshooting remotely as well as at the facility. New graphics will be provided for all new AHUs and VAV boxes.

6.6.7 System Commissioning, Testing and Balancing

Provide commissioning of work designed/constructed under this project. Also provide to a firm certified by the Associated Air Balance Council (AABC) or National Environmental Balancing Bureau (NEBB) to perform the testing, adjusting and balancing procedures of air side and water side systems per the requirements of the AABC or NEBB Procedural Standards for Testing, Adjusting and Balancing of Environmental Systems.

7. Electrical Design Narrative The electrical requirements for the project include (but are not limited to):

• New electrical connections for new HVAC equipment.

• Removal/replacement of existing exit signs and emergency lighting.

7.1 General Design Parameters and Assumptions

The existing secondary voltage to Building 4019 is 208Y/120V, 3-phase, 4-wire. The building is currently served by an existing three (3) pole mounted 75-kVA utility transformers that will remain in place, as the demand load for the building is not expected to increase. Contractor shall determine anticipated load increases and provide to government during the design process. The existing electrical service size for Building 4019 is currently 225 amperes.

The existing normal power distribution system consists of a main panelboard (S1), and distribution panelboard (S2).

The Building 4019 existing normal power switchboards and electrical distribution systems are anticipated to remain in place. Contractor is to perform a building survey to identify the existing mechanical and plumbing equipment branch circuits, existing panelboards spares/spaces, and

14/March 18, 2026 existing electrical room layout and available space. Existing panelboard(s) spares/spaces will be evaluated and considered to support new branch circuits.

Contractor shall perform Voltage Drop calculations for all existing/reused branch circuits that have excessive lengths; circuit showing excessive voltage drop will be replaced. New branch circuits for this project will not exceed the maximum allowable length and will not produce excessive voltage drop.

7.2 Electrical Demolition

The existing mechanical equipment scheduled for demolition will have branch circuits, disconnects, and other associated electrical equipment removed back to the originating power source. The circuit breakers will remain in place as spares or reused for select mechanical equipment.

7.3 Electrical Construction

Contractor will be required to verify and trace all existing panel sources, main circuit breakers, branch circuits and existing loads information for panelboards located on the north wall of the existing space. Circuit index directories will be required to be updated as per Specifications. All existing conditions and circuits will be updated and provided on as-built drawings as required for records.

The new electrical clear space will be further investigated for working clearance requirements.

Two (2) cable trays one (1) for power and the second one (1) for comm. To be installed around the perimeter approximately 12’ AFF. The power tray and the comm tray will be 10” apart. The top cable tray will feed each of the power poles for all the office furniture. The bottom cable tray will feed comm lines to each desk Install two (2) eye bug emergency lights, with one (1) on each wall. At least eighty inches high.

Replace one (1) 2x4 light in each of the offices, small meeting room, and restrooms with an emergency light next to the exits.

Install GFCI electrical receptacles adjacent to the sink in each restroom.

Install a four (4) foot long vanity light above the mirror in each restroom.

Install surface mounted receptacles in the small meeting area adjacent to the restrooms on each wall and two (2) on west wall.

Arc Flash label and short circuit calculation requirements will be included in the design. New overcurrent protection devices will be installed. Contractors will be required to submit the Power Study Protection system to 72ABW/CENMP for approval prior equipment selection.

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8. Fire Protection / Life Safety Design Narrative Contractor shall have a Qualified Fire Protection Engineer provide services as defined in UFC 3- 600-01, Fire Protection Engineering for Facilities, for a major project. All work shall comply with UFC 3-600-01 and the Tinker Air Force Base Fire Protection Standards. Uninstall the existing conventional FCI fire alarm system in its entirety to include the Monaco transceiver. Return the uninstalled control panels and devices to the government. Provide a new fire alarm and mass notification system utilizing the Monaco MAAPX with integrated transceiver as the main control panel.

The fire sprinkler system is to remain intact and operational. No modifications to the fire sprinkler system is required. The new fire alarm and mass notification system shall supervise the fire sprinkler supply valves tamper switches and vane type flow switch.

8.1 General Design Parameters and Assumptions

8.1.1 Jurisdictional Authority

The Contracting Officer and Base Fire Chief are the Authorities Having Jurisdiction (AHJs).

8.1.2 Fire Protection Approach

The fire protection and life safety systems design approach will follow UFC 1-200-01 and

UFC 3-600-01.

8.2 Building Use and Occupancy

8.2.1 Existing Occupancy Classification

The occupancy classification is Business, and the construction type is IIB.

8.3 Fire Protection Systems

8.3.1 Automatic Sprinkler Protection

Automatic sprinkler protection is provided throughout Building 4019 and shall remain unchanged.

Sprinkler protection is provided by a wet pipe sprinkler system.

8.3.2 Fire Extinguishers

Portable fire extinguishers are required.

8.3.3 Fire Alarm / Mass Notification

Uninstall the existing fire alarm system and the associated transceiver. Return the control panels, antenna, and the peripheral devices to the government.

Provide a new integrated fire alarm and mass notification system to include antenna. The new system shall be a Monaco MAAPX with mass notification and with an integral transceiver and antenna.

8.4 Means of Egress

Contractor shall provide a complete life safety design and analysis report per UFC 3-600-01, section 1.7.

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8.5 Safeguards During Construction

All work associated with this project shall be performed in accordance with NFPA 241 Standard for Safeguarding Construction, Alteration, and Demolition Operations.

8.5.1 Fire Protection Impairment Supervision

Fire protection impairments will be supervised and performed in accordance with UFC 3-601-02.

9. Communications Design Narrative

• The Using Organization must submit a Work Order in Cyberspace Infrastructure Planning

System (CIPS) to provide the following. Work Request may submitted to 72ABW/SCXP @ 72ABW.SCXP.projectmanagers@us.af.mil.

• All wall mounted devices will be installed in surface mounted raceway.

Appendix A

Acronyms and Abbreviations

A Ampere(s)

AABC Associated Air Balance Council

ACCA Air Conditioning Contractors Association

ACI American Concrete Institute

ACT Acoustic Ceiling Tile

AFB Air Force Base

AFF Above Finished Floor

AFI Air Force Instruction

AHJ Authorities Having Jurisdiction

AHU Air Handling Unit

AISC American Institute of Steel Construction

ANSI American National Standards Institute

ASCE American Society of Civil Engineers

ASHRAE American Society of Heating, Refrigeration and Air-Conditioning Engineers

ASTM American Society for Testing and Materials

BTHU British thermal unit

CAC Common Access Card

CIPS Cyberspace Infrastructure Planning System

CMU Concrete Masonry Unit

COMM Communications

DB Dry Bulb

DoD Department of Defense

DX Direct Expansion

E East

EBI Enterprise Building Integrator

EMI Electromagnetic Interference

EMT Electrical Metallic Tubing

FCI Fire Control Instruments

FCU Fan Coil Unit

FF-L Federal Specification

FPS Feet Per Second

FT Feet

GSA General Services Administration

HR Hour(s)

HSS Hollow Structural Section

HVAC Heating, Ventilation and Air Conditioning

IAW In Accordance With

IBC International Building Code

IEBC International Existing Building Code

IECC International Energy Conservation Code

IMC International Mechanical Code

IN Inches

IPC International Plumbing Code

IT Information Technology kVA Kilovolt-Ampere

LAN Local Area Network

LED Light Emitting Diode

MOD Motorized Damper

N North

NEBB National Environmental Balancing Bureau

NFPA National Fire Protection Association

NIPR Non-Secure Internet Protocol Router

PSF Pounds per Square Foot

RF Radio Frequency

RFI Radio-Frequency Interference

SMACNA Sheet Metal and Air Conditioning Contractors' National Association

S South

TAFB Tinker Air Force Base

UFC Unified Facilities Criteria

V Volts

VAV Variable Air Volume

W West

WB Wet Bulb

WG Water Gauge

§ Subsection

°F Fahrenheit

Appendix B

Civil Calculations and Cutsheets

Appendix C

Architectural Calculations and Cutsheets

Appendix D

Structural Calculations and Cutsheets

Figure 1 - New Door Opening and (2) Windows Framing at East End

Figure 2-New Opening Infill, (2) OH Door, (1) Man Door (Bid Alternate includes (2) Windows at each OH Door)

Appendix E

Mechanical / Plumbing Calculations and Cutsheets

Appendix F

Electrical Calculations and Cutsheets

Appendix G

Fire Protection Calculations and Cutsheets

9. Communications Design Narrative