Att11_250031 - Design Narrative.pdf

Design Narrative_v3_05/02/23

Design Narrative

REPAIR B62528, B#62528

Project Number: WWYK250031 Opportunity #: 1149536

Tinker Air Force Base, Oklahoma

March 25, 2025

Prepared By:

Brandon Wymer Tepa Companies

7535 5th Street, Building 400 Tinker AFB, OK 73145

Design Narrative WWYK250031 - REPAIR B62528, B#62528

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CONTENTS

1. Overview

2. Applicable Codes and Standards

General Civil 1 Architectural Structural Mechanical / Plumbing Electrical Fire Protection

3. Civil Design Narrative

4. Architectural Design Narrative

General Design Parameters and Assumptions

4.1.1 Visual Features

4.1.2 Energy Conservation

4.1.3 Architectural Demolition

4.1.4 Architectural Construction

5. Structural Design Narrative 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

Structural Demolition Structural Construction

6. Mechanical Design Narrative General Design Parameters and Assumptions

6.1.1 Elevation, Latitude/Longitude, Climate Zone

6.1.2 General Indoor Temperature/Relative Humidity Parameters

Validation of Existing HVAC Systems Demolition

6.1.3 Equipment Storage/Open Storage

Mechanical Construction

6.1.4 Equipment Storage/Open Storage

6.1.5 PLUMBING DEMOLITION

6.1.6 PLUMBING CONSTRUCTION

6.1.7 Controls

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7. Electrical Design Narrative

7.1.1 General Design Parameters and Assumptions

7.1.2 Electrical Demolition

7.1.3 Electrical Construction

8. Fire Protection / Life Safety Design Narrative General Design Parameters and Assumptions

8.1.1 Jurisdictional Authority

8.1.2 Fire Protection Approach

Building Use and Occupancy

8.1.3 Existing Occupancy/Use Classification:

8.1.4 New Occupancy Classification

Fire Protection Life Safety Features

8.1.5 Hazard Material Facility Features (NFPA 400)

8.1.6 Fire and Smoke Protection Features: None Required

8.1.7 Fire Department (Emergency) Vehicle Access

8.1.8 Fire Hydrants

Fire Protection Systems

8.1.9 Automatic Sprinkler Protection

8.1.10 Fire Extinguishers

8.1.11 Fire Alarm / Mass Notification

Means of Egress

8.1.1 Egress Capacity

8.1.2 Number of Exits

8.1.3 Arrangement of Means of Egress

8.1.4 Egress Travel Distance

8.1.5 Marking of Means of Egress

Safeguards During Construction

8.1.6 Hot Work

8.1.7 Fire Protection Impairment Supervision

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

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Appendix F: Electrical Calculations and Cutsheets Appendix G: Fire Protection Calculations and Cutsheets

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1. Overview Repair B62528 (INTERIOR, EXTERIOR, AND SITE). SIDING COMING OFF (SCREWS RUSTED THROUGH

SIDING), INSULATION, PROPER VENTILATION, CHEMICAL LINES REPLUMBED WITH PROPER

MATERIAL AT LOADING AND CHEMICAL SPILL CONTAINMENT, REPLACE THE 4,000 GALLON

POLYMER TANK, DEMO AND PAVE TO MAKE OVERHEAD DOOR ACCESSIBLE BY FORKLIFT (INSTALL CURB TO PREVENT FORKLIFT FROM FALLING), REPAIR OR REPLACE STAIRS ON SOUTH SIDE OF BUILDING (CRACKED AND SINKING), STAIRS INSIDE BUILDING NON OSHA COMPLIANT, REPAIR SECONDARY CONTAINMENT COATINGS, REPAIR EXTERIOR WALL PENETRATIONS, PROVIDE FREEZE

PROTECTION TO CHEMICAL FEE LINES, INSTALL WALL WITH OVERHEAD DOORS ON BUILDINGS

NORTH FACE

2. Applicable Codes and Standards 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

Civil

• FAA Advisory Circular 150/5340-1L

• BASH Manual

• UFC 3-201-01 Civil Engineering

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

Structural

• UFC 3-301-01 Structural Engineering

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

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• 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 3-400-02 Design: Engineering Weather Data

• 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 3-410-04 Industrial Ventilation

• UFC 3-420-01 Plumbing Systems

• UFC 3-430-01FA Heating and Cooling Distribution Systems

• UFC 3-450-01 Noise and Vibration Control

• UFC 4-440-01 Warehouses and Storage Facilities

Electrical

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

• NFPA 70 National Electrical Code

• TAFB Electrical Standard

• UFC 3-501-01 Electrical Engineering

• UFC 3-520-01 Interior Electrical Systems

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

• AFMAN 32-1065 Grounding and Electrical Systems

Fire Protection

• 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

• NFPA 1 Fire Code

• NFPA 10 Standard for Portable Fire Extinguishers

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

Hot Work

• NFPA 70 National Electric Code

• NFPA 101 Life Safety Code

• NFPA 400 Hazardous Materials Code

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• NFPA 241 Standard for Safeguarding Construction, Alteration, and Demolition Operations

• TAFB Fire Protection Standard

3. Civil Design Narrative Included in structural.

4. Architectural Design Narrative Removal/Replacement of Insulation system at all walls and below the metal roof. Patch & seal all openings in the existing envelope from the interior prior to application of the new insulation system.

Remove the existing overhead manually operated coiling door at the south exterior wall to accommodate the installation of a new taller manually operated insulated coiling door to be installed after structural demolition of the portion of the concrete stem wall below the existing manually operated coiling door.

General Design Parameters and Assumptions

4.1.1 Visual Features

New overhead coiling door finish & color to comply with TAFB Standards.

4.1.2 Energy Conservation

New insulation at exterior walls shall be a minimum of R-20. New insulation at the underside of the roof shall be a minimum of R-28.

4.1.3 Architectural Demolition

(a) Remove insulation system at the walls and the underside of the roof.

(b) Remove existing overhead manually operated coiling door at the south exterior wall.

(c) Remove existing spill containment coatings and prep surfaces for installation of the new acid protective industrial coating membrane system.

4.1.4 Architectural Construction

(a) Patch and seal all openings and penetrations in the building envelope from the interior.

(b) Install new acid protective industrial coating(s) at the spill containment structures and shall extend a minimum of 4” over and down the outer side of the containment structure curb.

The new acid protective industrial coating shall be a continuous membrane system.

(c) Install new acid protective industrial coating(s) from the top of the perimeter concrete structure to 6’-6” above the perimeter concrete structure.

(d) Install spray-applied glass fiber insulation to the interior walls and to the underside of the metal roof.

(e) Install spray-applied seal protection over coat up to an elevation of five (5) feet above the floor level(s).

(f) Install new manually operated insulated coiling door overhead door at the interior of the wall to accommodate the enlarged opening in the south façade.

5. Structural Design Narrative The structural scope includes the following items. Repairing all rust or corroded steel. Replacing damaged metal wall panels on the northern wall that has been cut and corroded. Alter the interior structure and construct new concrete structure to accommodate egress requirements.

Alter existing structure and construct new concrete ramp and bring OH door down to finish floor.

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 and

ACI 318.

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 B.

• 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 , AISC 360.

5.1.5 Structural Loads

(a) 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, and other pertinent standards and vendor-supplied information.

(b) 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

(c) 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, Directional procedure.

Wind Speed: The minimum 3-second gust design wind speed shall be determined from Figure 26.5 of ASCE 7. 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, shall be used for this building.

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

(d) Load Combinations

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

(e) Seismic and Snow Loads

Seismic loads shall be determined in accordance with IBC. The structure will be designed with Seismic Site Class “D” based on the seismic parameters defined in IBC.

Snow loads shall be determined in accordance with IBC. The ground snow load shall be 10 pounds per square foot.

Structural Demolition

Structural demolition is required to accommodate new construction such as removing corroded and damaged steel structure and metal panels. Removing concrete foundation as required to install new ramp at OH door and as required to satisfy egress.

Structural Construction

Repair all corroded and rusted steel structure. Replace damaged metal panels at the north wall.

Construct new concrete ramp from sidewalk up to finish floor at OH door. OH door is required to extend to the finish floor elevation. Alter structure to satisfy egress.

6. Mechanical Design Narrative General Design Parameters and Assumptions

6.1.1 Elevation, Latitude/Longitude, Climate Zone

Elevation, latitude/longitude, and climate zone were taken from International Energy Conservation Code 2015. Weather data below was taken from UFC 3-400-02 and 2021 ASHRAE Fundamentals Chapter 14.

Elevation: 1,260 ft.

Latitude: 35.42 N

Longitude: 97.38 W

Climate Zone: 3

Summer: 99°F DB/74°F WB

Winter: 18.4°F

6.1.2 General Indoor Temperature/Relative Humidity Parameters

Unoccupied storage buildings are to be maintained above 45° F IAW UFC 4-440-01 Warehouses and Storage Facilities. The existing roof top unit provides heating and cooling and is sufficient for normal operation.

Building HVAC Loads

Load calculations were not performed as the project is replacing the building envelope insulation and the existing HVAC is adequate.

Indoor Air Quality

Ventilation rates for all areas will be provided per ASHRAE 62.1-2016. Ventilation air will be provided by the existing air handling unit installed on the roof of the building. Exhaust fan EF-1 has up to 5000 CFM output. Air change rate calculated with building volume of 36,834 cubic feet and 5000 CFM of exhaust fan resulted in an air change rate of 8.14. Exhaust fan EF-2 also has airflow of up to 5000 CFM, with both exhaust fans there is plenty of ventilation for the space.

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 building.

Demolition

Demolition includes but is not limited to the following:

6.1.3 Equipment Storage/Open Storage

(a) Remove existing Gas Detection Area Monitor.

Mechanical Construction

6.1.4 Equipment Storage/Open Storage

(a) There are two existing exhaust systems, one is a general building exhaust that is not currently operated as there is a RTU conditioning the space with both heating and cooling.

The other exhaust system is an emergency system of stainless steel ductwork, low to the floor for heavy gases energized by a gas monitoring system. The existing exhaust fans for both system have a 5,000 CFM air flow rate which provides an 8 ACH that meets the required 2915 CFM for exhaust.

(b) Existing gas monitor is in poor condition and not connected to a power supply and shall be replaced to ensure the existing exhaust ventilation system operates as required. Install new gas detection area monitor IAW UFC 3-470-01.

6.1.5 PLUMBING DEMOLITION

(a) Remove the western 4,000 gallon polymer tank and associated sump pump.

(b) Remove all chemical piping from loading and chemical spill containment area to tanks.

6.1.6 PLUMBING CONSTRUCTION

(a) Replace the western 4,000 gallon polymer tank with Tank IAW UFC 3-240-13

(1) Tank shall be rated to store GL-826 Hydrochloric Acid Solution (HCl). Existing tank is deteriorating. Tank contains HCl which should be stored in a sealed container and stored away from incompatible materials (Strong Bases).

(b) Replace the Sump Pump servicing the Demolished Polymer Tank containment area IAW UFC 3-420-01

Sump pump is deteriorating and shall be replaced to handle any chemical spills from stored materials.

(c) Provide all chemical feed lines from exterior loading to tank spill containment IAW UFC 3- 240-13

(1) Chemical feed lines deteriorating from exposure to the elements outside and inside of building. Lines are CPVC and not durable for extreme weather. Metal lines recommended for increase durability and resilience to the elements. For sodium hydroxide lines made from stainless steel types 304 and 316 can be considered resistant below 176oF, up to the limit of solubility. For hydrochloric acid a corrosion resistant material will be needed over stainless steel, as the acid reacts with the steel and produces hydrogen gas. Rubber line pipes recommended as the rubber provides a barrier to corrosion similar to plastic, while the carbon steel provides a mechanically durable structure.

(2) Sodium Hydroxide (NaOH) line to be made from stainless steel. Alloy 304 or 316.

(3) GL-826 Hydrochloric Acid Solution (HCl) line to be made from corrosion resistant material. Recommend rubber (Soft Natural Gum Rubber) lined pipe inside carbon steel piping. Exterior steel piping should cleaned for painting, safety yellow.

6.1.7 Controls

Local control will be provided for the gas monitoring system. 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 the new monitoring system.

Metering of the chilled/heating water, gas, electricity and domestic water usage for this building will not be done under this project as we are not modifying these incoming services under this project.

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

• The removal and installation of a 4000-gallon chemical tank: remove both power and control wiring circuits. This is to ensure a safe and clear work area work the work necessary to remove this chemical tank and install a new one.

• With the wall insulation replacement disconnect and re-install all power and control circuits. Coordinate with other trades performing this work as to what they need.

• Validate that the circuits for the existing sump pump and new overhead doors; are in applicable code compliance.

7.1.1 General Design Parameters and Assumptions

Coordinate all associated electrical work with appropriate trades that requires conduits for power and control wiring removed under this project scope of work.

7.1.2 Electrical Demolition

The 4000-gallon chemical tank on the West end of the facility is being replaced. Existing PVC Pipe and wire (power and control) needs to be removed to provide safe access for the tank removal. The amount of pipe & wire must be coordinated with other trades – to provide and allow for clear and safe removal.

Coordinate the removal and re-installation of both power and control wiring with appropriate trades for the replacement of wall insulation. If it is noted that the existing electrical in not in compliance with appropriate codes: notify Contracting officer.

OG&E overhead distribution lines and the two (2) utility poles must be removed to allow for the new access ramp and overhead door replacement. (NOTE: Currently the removal of these two

(2) poles and relocation of the overhead lines to underground is part of the OG&E’s portion of the IWTP Electrical Distribution System repair (WWYK200310). This note is being added since the schedule(s) and funding can impact this final scope and cost)

7.1.3 Electrical Construction

New PVC pipe and wire shall be used to reestablish the power and control circuits, removed for the chemical tank replacement. Coordinate the replacement of both power and new controls with installation the new 4000-gallon chemical tank.

Sump Pump: Verify that the existing circuit is complying applicable codes. If not in compliance notify the Contracting officer

As part of the insulation replacement coordinate the disconnection and reinstall of both conduit for power and controls with applicable trades performing this work.

Provide power to the new overhead door: once a selection has been made. There are electrical panels on South wall next to the existing overhead door.

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8. Fire Protection / Life Safety Design Narrative There is no fire suppression or fire alarm scope of work required. There are fire protection concerns and requirements of this work.

General Design Parameters and Assumptions

8.1.1 Jurisdictional Authority

The Tinker AFB Designated Fire Protection Engineer (DFPE) and Base Fire Chief are the Authorities Having Jurisdiction (AHJs).

8.1.2 Fire Protection Approach

The fire protection and life safety system’s design approach will follow UFC 1-200-01, UFC 3-600-01, Chapter 34, the International Building Code (IBC), the International Existing Building Code (IEBC) and NFPA 101 (Life Safety Code) as adopted by UFC 3-600-01.

The scope of work is defined as a Level 1 Alteration per IEBC. Level 1 Alterations include the removal and replacement or the covering of existing materials, elements, equipment, or fixtures using new materials, elements, equipment, or fixtures that serve the same purpose.

The IEBC Chapter 7 requires new materials to comply with IBC requirements for new materials.

Work must not reduce level of fire protection or life safety.

Per UFC 3-600-01§34-1.2.1, this work is classified as a Renovation, defined as the replacement in kind, strengthening, or upgrading of building elements, materials, equipment, or fixtures, that does not result in a reconfiguration of the building spaces within.

The work shall additionally adhere to UFC 3-600-01 §34-1.4.1, which states “All work must conform to the existing occupancy provisions of NFPA 101. The work must not make the building or occupancy less conforming with this UFC and NFPA 101 than before the Renovation project was undertaken.

Building Use and Occupancy

8.1.3 Existing Occupancy/Use Classification:

This building houses bulk storage of chemicals used in the wastewater treatment process tank located under canopy attached to this building. Per UFC 3-600-01 §34-9, this building must comply with NFPA 400 requirements for Corrosive Liquids. Corrosives present in volumes exceeding the MAQ include:

• 4,000 gallons Hydrogen Peroxide: Health Hazard – Corrosive; MAQ 500 Gals

• 4,000 gallons GL-826 (HCL Compound): Health Hazard – Corrosive; MAQ 500 Gals

(a) IBC Occupancy: High Hazard Group H-4 (IBC 307.6)

The building contains bulk storage and dispensing of Corrosives exceeding the MAQ per control area listed in Table 307.1(2) Maximum Allowable Quantities per Control Area of Hazardous Materials Posing a Health Hazard.

(b) NFPA 101 Occupancy: Storage – Ordinary Hazard Contents

NFPA 101 chapter 42 covers requirements for existing storage occupancies. NFPA 101 §6.2.2.4 defines High-Hazard contents as “those that are likely to burn with extreme rapidity or from

March 25, 2025 | 5 which explosions are likely.” The bulk chemicals present are not combustible, and therefore, this is not classified as a High-Hazard Storage occupancy.

8.1.4 New Occupancy Classification

The occupancy will remain unchanged.

Fire Protection Life Safety Features

8.1.5 Hazard Material Facility Features (NFPA 400)

(a) Spill Control / Drainage / Secondary Containment: existing, not changed.

(b) Ventilation: NFPA 400 §12.2.4 requires facilities or areas where corrosive vapors or gasses might be emitted shall be provided with mechanical exhaust ventilation or natural ventilation where natural ventilation can be shown to be acceptable for the materials as stored. Ventilation must comply with NFPA 400 §6.2.1.5 Ventilation. This building has an existing ventilation system. Reference Mechanical for changes to these systems.

(c) Explosion Control: None required. Materials are not explosive

(d) Emergency and Standby Power: Where mechanical ventilation, treatment systems, temperature control, alarm, detection, or other electrically operated safety systems are required by this code, NFPA 1, or NFPA 5000, such systems shall be provided with standby power or emergency power as required by 6.2.1.8.

(e) Limit Controls: System temperature and pressure control are existing and not being changed. Reference Mechanical section for scope of HVAC controls changes.

(f) Monitoring/Supervision: No alarm, detection, or automatic fire-extinguishing systems are required. Central Station reporting is not required.

8.1.6 Fire and Smoke Protection Features: None Required

8.1.7 Fire Department (Emergency) Vehicle Access

UFC3-600-01 §12.2.5 requires for building 5,000sf or larger to have all-weather ground access that paved, starts from a road, and terminate no farther than 33 feet (10 m) from an exterior door accessible for fire department ingress. This facility has paved access to within 33 ft of the building. It is not required because the building is less than 5,000 sf.

8.1.8 Fire Hydrants

UFC3-600-01 §9-3.5.8.2 requires all parts of the facility exterior must be within 350 ft of a hydrant with consideration given to accessibility and obstructions. An existing hydrant is located NE of the facility providing less than a 200 ft hose lay to cover the exterior of the building.

Fire Protection Systems

8.1.9 Automatic Sprinkler Protection

Per NFPA 400 §12.2.5 referencing §6.2.1.4, Automatic sprinkler protection is Not required in this facility, being wholly of and containing non-combustible contents. Otherwise, the building must be protected with a wet sprinkler system providing OH2 coverage.

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8.1.10 Fire Extinguishers

The contractor shall provide portable fire extinguishers suitable for the combustible present during construction. Where existing building extinguishers are blocked, removed or generally made inaccessible to the building occupants, supplemental extinguishers shall be provided such that a portable fire extinguisher is located within 75 travel distance of all areas of the building.

The contractor shall regularly inspect (at least weekly) portable extinguishers located within the work area to ensure that they are charged, free from damage and accessible.

8.1.11 Fire Alarm / Mass Notification

The building is not equipped with a fire alarm system. A fire alarm system is not required by requirements of UFC 3-600-01, NFPA 400, or NFPA 101.

Mass notification is not required by UFC 4-010-01 being an uninhabited building.

Means of Egress

8.1.1 Egress Capacity

Occupant load factor in NFPA 101 Table 7.3.1.2 for storage occupancies is “maximum number present” at any one time. 20 persons is a reasonable high number.

Minimum width of exit access is 28” in existing buildings per NFPA 101 §7.3.4.1.2.

There are places where equipment and piping reduce the exit access path. When equipment and piping are changed, they should be changed to maximize egress path width.

Minimum clear width at a door in means of egress is 28” in existing buildings per NFPA 101 §7.2.1.2.3.2(4). Existing doors have 36” wide leaves. Clear width is 32” minimum.

8.1.2 Number of Exits

Per NFPA 101 §42.2.4.1(2), two exits are required unless all areas can reach an exit within the allowed common path of travel limit. The distance to an exit in more than one place exceeds the allowed common path of travel limit.

8.1.3 Arrangement of Means of Egress

The building has two existing exits, 36” side-hinged doors. Distance between door is approximately 35’ apart. Diagonal of occupied space is 80’. These doors are required to be separated by ½ the diagonal distance of the space served. This review finds not all areas of the building can reach an exit in less than the 50’ allowed common path (NFPA 101 Table 42.2.5).

The arrangement of travel does not provide separation of exits meeting §7.5.1.3.1. Therefore the §7.5.1.3.5 exception does not apply.

Providing another door to reduce the travel path to within the allowed distance should be included in another project.

8.1.4 Egress Travel Distance

The exit access travel distance from all occupiable locations within the building can reach an exit within the allowed travel distance. Longest travel path is estimated to be 58 feet. (NFPA 101

TABLE 42.2.6)

Common path of travel exceeds the allowed 50 feet common path of travel (NFPA 101 Table 42.2.5). due to containment dikes and obstructions to traveling around in second path.

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Dead ends do not exceed the allowed 50ft limit (NFPA 101 Table 42.2.5).

8.1.5 Marking of Means of Egress

NFPA 101 §7.10.1.2. requires exit signs over exits. They are existing.

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.

8.1.6 Hot Work

All Hot Work associated with demolition and construction shall be performed in accordance with NFPA 51. Safeguard for Hot Work operations include but are not limited to the relocation of combustible storage, the use of fire resistive barriers to protect combustibles that cannot be relocated, the establishment of Fire Watch and the termination of hot work operations when fire protection systems are out of service. Additionally, Hot Work should not be performed when alternative methods can be employed to dismantle existing or assemble new systems.

8.1.7 Fire Protection Impairment Supervision

Fire protection impairments will be supervised and performed in accordance with

UFC 3-601-02.

Appendix A

Acronyms and Abbreviations

A Ampere(s)

AABC Associated Air Balance Council

ACCA Air Conditioning Contractors Association

ACI American Concrete Institute

ACS Access Control System

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

BUR Built-Up Roof

CAC Common Access Card

CBT Computer Based Training

CCTV Closed Circuit Television

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

IC Intelligence Community

ICD Intelligence Community Directive

ICS Intelligence Community Standard

IDS Intrusion Detection System

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

SIPR Secure Internet Protocol Router

SMACNA Sheet Metal and Air Conditioning Contractors' National Association

S South

STC Sound Transmission Class

TAFB Tinker Air Force Base

UFC Unified Facilities Criteria

UPS Uninterruptible Power Supply

V Volts

VAV Variable Air Volume

W West

WB Wet Bulb

WG Water Gauge

§ Subsection

°F Fahrenheit

Appendix C

Architectural Calculations and Cutsheets

Basis of design for industreial coatings:

(1) 633: Novolac Coating, a 100% solids epoxy Novolac coating ideal for harsh chemical and solvent resistant applications. It is used in secondary containment areas. It is ideal for use as a protective coating for concrete and steel in extremely corrosive areas and waste treatment. Novolac Coating is commonly used as a seal coat for Epoxy MORTAR SYSTEMS where chemical resistant performance is required.

(2) 633W is a wall Grade Epoxy Novolac is a 100% solids wall grade epoxy.

(2) 663: Vinyl Ester Coating is a 100% reactive, vinyl ester novolac used to coat concrete or steel surfaces in chemically aggressive industrial environments as a coating for secondary containment, trenches and structural members.

https://www.epoxy.com/epoxy_novolac_chemical_resistant_wall_grade.aspx

Appendix D

Structural Calculations and Cutsheets

4 | March 25, 2025

6 | March 25, 2025

8.1.4 New Occupancy Classification