Attachment 25 -CH50091-2P Attachment 5a Conceptual Design Analysis 20Aug....pdf

CH-50091-2P Bldg Renovation 29608.

Design Analysis

CH-50091-2P Renovate &

Expand Bldg-29608

Ft. Gordon, GA

20 Aug 2020

Directorate of Public Works Engineering Division

USAG Fort Gordon, Georgia

Table of Contents

Section 1 General Project Information………………………………………..3

1.1 Purpose……………………………………………………………………...

1.2 Project Description………………………………………………………….

1.3 General Applicable Criteria………………………………………………..

1.4 Precedence …………………………………………………………………

1.5 Military Criteria……………………………………………………………...

Section 2 Design Requirements and Provisions……………………………7

2.1 Existing Conditions…………………………………………………………

2.2 Demolition and Removals………………………………………………

2.3 Functional Requirements…………………………………………………..

2.4 Site Work / Civil…………………………………………………………..…

2.5 Architectural/ Interior & Exterior…………………………………………..

2.6 Mechanical………………………………………………………………..…

2.7 Electrical and Telecommunications……………………………………….

2.8 Lightning Protection System (LPS)……………………………………

2.9 Fire Protection and Life Safety ……………………………………

2.10 Structure……………………………………

2.11 Plumbing …………………………………………………………………..

2.12 Sustainability Narrative……………………………………………………

Appendix A: Outline Specifications……………………………………....…35 Appendix B: Lightning Protection System (LPS) Calculations…………40 Appendix C: Record of Environmental Consideration (REC) …………..43 Appendix D: Existing Hot and Chilled Water Loads …………..80

Section 1 General Project Information

1.1 Purpose: This document provides the Basis of Design for CH 50091-2P Bldg 29608 Addition and Renovation.

Section 1 provides information on the Purpose and Design Criteria governing the project.

Section 2 presents a detailed discipline by discipline narrative conveying the salient features of the project.

Reference materials, List of Specifications, and other supporting documentation are found in the appendices. Drawings, to include As-Built, are provided separately. All information here-in shall confirmed and updated as required by Designer of Record in the next design submission.

1.2 Project description: The project site is located on Barnes Avenue, 500’ to the west of Rice Blvd. The contractor is to perform design and construction for the renovation of the interior at building 29608 and construct a new 2,300 square foot addition. Renovation work includes expanding the restrooms space to meet occupant loads, bring restrooms up to code, replace carpet and tile throughout the existing building, replace all exterior doors and frames, install locking bar enclosure for cabinets in Sacristy, provide lockable enclosure / sound both for sound system, revise lighting controls in chapel, replace parking striping and signs at North entrance to meet ATFP requirements, reroute utilities for sanitary sewer & water, upgrade electrical service entrance transformer and power distribution for existing and new construction, remove trees for new addition, remove stove, reseal and repaint exterior window trim and gutters to match existing, replace entire HVAC system, and cleanup administration office door frames and replace door leafs. Work associated with the addition will include a multifunction room with movable partitions, residential style multipurpose room to include a microwave oven, sink, refrigerator and cabinets, a new fire alarm system with sprinkler system to comply with NFPA 101, and NFPA 72 requirements, a new lightning protection system to comply with NFPA 780 for new addition and existing building. The scope includes hazardous material abatement. References are as indicated in the Design Analysis. Underground piping utilities shall also be tested for Asbestos prior to demolition. Construct new curbs and gutters, handicapped ramps, sidewalks, concrete slab as required.

Compliance with UFC 1-200-01 is required for renovation and new work.

1.3 General Applicable Criteria: Applicable design and construction criteria references are listed below. Specific criteria for each design discipline is listed under each section.

Unless a specific document version or date is indicated, criteria shall be taken from the most current references as of the date of issue of the contract or task order, unless otherwise stated in the task order. This list is not intended to include all criteria that may apply or to restrict design and construction to only those references listed.

1.4 Precedence: In the event of conflict between References and/or Applicable Military Criteria, the most stringent requirement will apply, unless otherwise specifically noted in the contract.

1.5 Military Criteria: The project shall conform to the latest edition criteria of all references.

Certain design impacts and features due to these criteria are noted for the benefit of the offeror. However, all requirements of the referenced criteria will be applicable, whether noted or not, unless otherwise specified herein.

• Fort Gordon Installation Design Guide

• ADA Standards for Accessible Design

• Army Regulation (AR) AR 380–5, Information Security Program

• ASHRAE 189.1 Standard for the Design of High-Performance Green Buildings,

• UFC 1-200-01, Design: General Building Requirements,

• UFC 3-201-01, Civil Engineering

• UFC 3-210-10, Low Impact Development

• UFC 3-501-01, Electrical Engineering

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

• UFC 3-601-02, Operations and Maintenance: Inspection, Testing, and Maintenance of Fire Protection Systems

• UFC 4-010-01, Department of Defense Minimum Antiterrorism Standards for

Buildings

• UFC 4-021-01, Department of Defense DESIGN AND O&M: MASS NOTIFICATION

SYSTEMS

• Technical Instructions, TI 800-01 Design Criteria, International Building Code, 2018

Edition (IBC).

• National Fire Protection Association (NFPA) 101, Life Safety Code,

• NFPA 10

• Savannah District Engineering Design Manual for Military Construction, latest edition.

• Energy Policy Act of 2005 (Public Law 109-58)

• TB MED 530: Occupational and Environmental Health Food Sanitation

Air Conditioning and Refrigeration Institute (ARI)

• ARI 310/380 Packaged Terminal Air-Conditioners and Heat Pumps

• ARI 440 Room Fan-Coil and Unit Ventilator

• ANSI/ARI 430-99 Central Station Air Handling Units

• ARI 445 Room Air-Induction Units

• ARI 880 Air Terminals

Air Movement and Control Association (AMCA)

• AMCA 210 Laboratory Methods of Testing Fans for Rating

American Association of State Highway and Transportation Officials

(AASHTO)

• Standard Specifications for Transportation Materials and Methods of Sampling and Testing [Road Construction Materials]

• Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals

American Concrete Institute

• ACI 302.2R Guide for Concrete Slabs that Receive Moisture-Sensitive Flooring Materials

• ACI 318 Building Code Requirements for Structural Concrete

• ACI 315 Details and Detailing of Concrete Reinforcement

American National Standards Institute 11 (ANSI)

• ANSI Z21.10.1 Gas Water Heaters Vol. 1, Storage water Heaters with Input

• Ratings of 75,000 Btu per Hour or less

• ANSI Z124.3 American National Standard for Plastic Lavatories

• ANSI Z124.6 Plastic Sinks

• ANSI Z21.45 Flexible Connectors of Other Than All-Metal Construction for Gas Appliances

• ANSI/IEEE C2 National Electrical Safety Code

• ANSI/AF&PA NDS National Design Specification for Wood Construction

American Society of Civil Engineers (ASCE)

• ASCE 37 Design and Construction of Sanitary and Storm Sewers, Manuals and Reports on Engineering Practice [sanitary sewer and storm drain design criteria]

American Society of Heating, Refrigerating and Air Conditioning Engineers

(ASHRAE)

• ASHRAE 90.1 - ANSI/ASHRAE/IESNA 90.1, Energy Standard for Buildings Except Low-Rise Residential Buildings

• ASHRAE Guideline 0 The Commissioning Process

• ASHRAE Guideline 1.1 The HVAC Commissioning Process

• ASHRAE Handbooks Fundamentals, HVAC Applications, Systems and

Equipment, Refrigeration (Applicable, except as otherwise specified)

• ASHRAE Standard 15 Safety Standard for Refrigeration Systems

• ASHRAE Standard 62.1 Ventilation for Acceptable Indoor Air Quality

American Society of Mechanical Engineers International (ASME)

• ASME B 31 (Series) Piping Codes

• American Water Works Association (AWWA) Standards [standards for water line materials and construction]

Associated Air Balance Council (AABC)

• AABC MN-1 National Standards for Testing and Balancing Heating, Ventilating, and

Air Conditioning Systems

• AABC Associated Air Balance Council Testing and Balance Procedures

Federal Highway Administration (FHWA)

• Manual on Uniform Traffic Control Devices for Streets and Highways [signage and pavement markings for streets and highways]

International Code Council (ICC)

• IBC International Building Code Note: All references in the International Building Code to the International Electrical Code shall be considered to be references to

NFPA 70.

• All references in the International Building Code to the International Fuel Gas Code shall be considered to be references to NFPA 54 and NFPA 58.

• All references in the International Building Code to the International Fire Code and Chapter 9 shall be considered to be references to Unified Facilities Criteria (UFC) 3-

600-01.

• UFC 1-200-01, Department of Defense Building Code references both International Building Code and International Existing Building Code.IMC International Mechanical Code -Note: For all references to “HEATING AND COOLING LOAD CALCULATIONS”, follow ASHRAE 90.1

• Note: For all references to “VENTILATION”, follow ASHRAE 62.1

• IPC International Plumbing Code

• IEC Energy Conservation Code (IEC) –

• IGC International Gas Code - not applicable. Follow NFPA 54,

• National Fuel Gas Code and NFPA 58, Liquefied Petroleum Gas Code

National Fire Protection Association (NFPA)

• NFPA 10 Standard for Portable Fire Extinguishers

• NFPA 13 Installation of Sprinkler Systems

• NFPA 14 Standard for the Installation of Standpipes and Hose Systems

• NFPA 20 Installation of Centrifugal Fire Pumps

• NFPA 24 Standard for the Installation of Private Fire Service Mains and Their Appurtenances [underground fire protection system design]

• NFPA 30 Flammable and Combustible Liquids Code

• NFPA 70 National Electrical Code

• NFPA 72 National Fire Alarm and Signaling Code

• NFPA 80 Standard for Fire Doors and Fire Windows

• NFPA 90a Installation of Air Conditioning and Ventilating Systems

• NFPA 101 Life Safety Code

• NFPA 780 Standard for the Installation of Lightning Protection Systems

National Roofing Contractor’s Association (NRCA) Roofing and Waterproofing Manual

Occupational Safety and Health Administration (OSHA)

• Title 29, Part 1926 OSHA Construction Industry Standards, Title 29, Code of Federal Regulations, Part 1926, Safety and Health Regulations for Construction

Plumbing and Drainage Institute (PDI)

• PDI WH201 Water Hammer Arrestors Precast Concrete Institute

• PCI Design Handbook Precast and Prestressed Concrete

Sheet Metal and Air Conditioning Contractor’s National Association

(SMACNA)

• SMACNA HVAC Duct Construction Standards - Metal and Flexible

• SMACNA Architectural Manual Sheet Metal Manual

• SMACNA HVAC TAB HVAC Systems - Testing, Adjusting and Balancing

State/Local Regulations

• State Department of Transportation Standard Specifications for Highway and Bridge Construction

• Sedimentation and Erosion Control Design Requirements

• Environmental Control Requirements Storm Water Management Requirements

• Steel Door Institute (SDI) ANSI A250.8/SDI 100 Standard Steel Doors and Frames

• Steel Deck Institute SDI Diaphragm Design Manual

• Steel Joist Institute Catalog of Standard Specifications and Load Tables for Steel

Joists and Joist Girders

Underwriters Laboratories (UL)

• UL 96A Installation Requirements for Lightning Protection Systems

• UL 300 Standard for Safety for Fire Testing of Fire Extinguishing Systems for

Protection of Restaurant Cooking Areas

Uniform Federal Accessibility Guidelines (UFAS)

U.S. Architectural and Transportation Barriers Compliance Board

U.S. GREEN BUILDING COUNCIL (USGBC)

• LEED-NC Green Building Rating System for New Construction & Major Renovations

• LEED Application Guide for Multiple Buildings and

SECTION 2 DESIGN REQUIREMENTS AND PROVISIONS

2.1 Existing Conditions: The building is currently occupied. The interiors of the buildings have floor finishes that are outdated and in disrepair requiring a renovation of all spaces.

The existing chapel does not currently have adequate space to support the mission requirements. There are known Asbestos Containing Materials and Lead Paint is present within this building. The Lighting and Mechanical Systems in this building are not sufficient to support the new design requirements. The existing roof system is in good condition, therefore not in the scope of work, however, there may be incidental roof work required to tie in the new roof to existing roof system. A new fire main with fire hydrants will be required on site to support the new sprinkler system tie in for this building and to provide adequate life safety connection.

2.2 Demolition and Removals: The project will require Testing, and Remediation of all ACM and Lead Paint that is involved in the proposed Scope of Work. Demolition is required for the existing doors and frames, window blinds and shades, plumbing fixtures, toilet partitions, interior carpet and tile floors (down to existing Slab), acoustical tile drop ceilings, 12 x 12 existing ceiling tiles (remove to expose Rafters), existing Insulation, lighting fixtures and electrical service and devices, interior partition walls (as prescribed on Drawing Sheets and confirmed by the Designer of Record), existing furniture, and existing HVAC system.

The requirement for the exterior demolition entails removal of flaking paint on the building and windows.

2.3 Functional Requirements: The new requirements for Renovation of Bldg 29608 is for the Contractor to take the concept design (provided by DPW), and provide the Government with a full constructible design. The project shall meet the full basis of design intent to provide new interior finishes, new HVAC System, new Plumbing System, and new Electrical System upgrades to meet the requirements.

Environmental: The environmental requirements for Renovation of Bldg 29608 include the Contractor providing Testing, management and monitoring, as well as abatement for all ACM and Lead Paint pertaining to the projects Scope of Work. All work performed under this contract must comply with EM 385-1-1, applicable federal, state, and local laws, ordinances, criteria, rules and regulations regarding handling, storing, transporting, and disposing of asbestos waste materials. Matters of interpretation of standards must be submitted to the appropriate administrative agency for resolution before starting any demolition and or abatement work.

Where the requirements of this specification, applicable laws, criteria, ordinances, regulations, and referenced documents vary, the most stringent requirements must apply.

The following state and local laws, rules and regulations apply:

a. AR 200-1, Environmental Protection and Enhancement

b. AR 420-1, Army Facilities Management The Contractor shall be responsible for obtaining all permits (local, state and federal) required for design and construction of all features. All debris and refuse created in the course of the project is to be hauled off the installation for disposal. Temporary toilet facility is to be provided on site. Building facilities are not available for contractor personnel. Coordinate location of temporary facility with Using Agency.

2.4 SITE WORK / CIVIL

SITE IMPROVEMENTS

The project includes the relocation of an existing 18-inch RCP gravity sanitary sewer line which currently bisects the area proposed for the new 2300± sq. ft. Fellowship Hall Addition to the Shepherd Chapel. Also included will be the demolition and removal of the adjacent side walk and grading between Chapel and Gym 4 as required or for the re-routing for sewer and detention and infiltration of a portion of the storm water runoff from the project.

The relocation of the existing 18-inch sanitary sewer line will involve the removal and replacement of a portion of an existing 10-inch line with approximately 100 feet of new 18-inch PVC line. The new line will collect all of the existing flow from the 18-inch line to be relocated and rerouted it to the West to a junction with a new 4-foot diameter dog house manhole (MH #3) over the existing 10-inch vitrified clay line. At this point, a new 18-inch PVC line will be run south from this manhole within the area previously utilized for the access roadway to a point of tie- in to an existing sanitary sewer manhole (MH #1). Upon successful completion of construction and testing of the new 18-inch PVC line, the existing 18-inch RCP line bisecting the site will be plugged at its points of connection to the existing manholes, grouted with flowable fill and abandoned in place.

A new 2 inch smart water meter and a 2 inch double check backflow preventer shall be installed in the existing 2 inch water service line adjacent to the valve where it connects to the main. The water meter shall be installed in a cast iron meter box and the backflow preventer shall be installed in an HDPE meter box.

The adjacent sidewalk area will be regraded to allow for the detention and infiltration of storm water runoff from both the Shepherd Chapel Addition as well as the east side of adjacent Building 29607. The existing drainage manhole rim and cover will be lowered and the cover replaced with a round catch basin grate to allow any storm water runoff in excess of that which can be detained and infiltrated to overflow to the positive drainage system for removal. As part of the construction of the detention/infiltration area, the existing top soil and sidewalk rock base should be removed and replaced with select granular fill which will allow for infiltration and then covered with 4- inches of top soil and sodded.

Concrete sidewalks will be removed and replaced as required for new underground utility work.

Design and Install an 8 inch ductile iron pipe (DIP) from Barnes Ave. south towards Barton Field between Gym 4 and Good Sheppard Chapel. Replace the domestic backflow preventer for Gym 4 as part of this scope. The 8 inch DIP will run to Rice Rd. connecting to the existing water main. The contractor will install two fire hydrants with isolation valves one for each fire hydrant. Fire hydrants will be installed to meet NFPA standard 24 and Unified Facilities Criteria 3-600-01(2019) for spacing and installation of the water mains with the fire hydrants. Contractor will consult with AUD for the fire hydrant and water main installation. Contractor will install fire hydrants as shown on the conceptual drawing, with final coordination between DFPE and post fire department. Contractor shall at no additional cost be responsible for testing and chlorination of the line as required by AUD.

5.1.1.1.1. Contractor shall install 4 maxi force Collapsible bollards or equal meeting the AT/FP requirements. Style shall be SS1- SS3 or equal with final approval by DPW Engineering and DPTMS AT/FP requirements. Contractor shall provide a submittal prior to purchase for review and approval by the government. Conduct the site survey, topographic work, geotechnical investigation, and hydrologic and hydraulic analysis. Provide 4” of topsoil and establishment period for sodding as required for all disturbed earth areas.

Removal of existing traffic signs, wheel stops, parking luminaries, etc. to meet ATPF requirements.

2.5 ARCHITECTURAL / INTERIOR & EXTERIOR

2.5.1 Architectural Applicable Criteria:

The architectural design will be developed according to the latest edition of the following applicable criteria, codes and standards:

• International Building Code (IBC)

• International Plumbing Code (IPC)

• NFPA Fire and Life Safety Codes

• ADA Standards for Accessible Design

• United Facilities Criteria (UFC) website http://dod.wbdg.org

• UFC 1-200-01: General Building Requirements

• UFC 3-600-01 Fire Protection Engineering for Facilities for: Use and Occupancy

Classifications:

o General Building Heights and Areas o Interior Finishes o Fire Protection Systems

• UFC 4-010-01 and 4-010-02 for Anti-terrorism/Force Protection standards

• Occupational Safety and Health Act (OSHA) - applicable standards and regulations

• American National Standards Institute (ANSI)

• American Society for Testing and Materials (ASTM)

• Savannah District Design Manual for Military Construction

• Fort Gordon Installation Design Guide

• ASHRAE 90.1

2.5.2 Architectural description of the project:

Site Placement and Formal Massing

The design team was originally presented a schematic site layout form Ft. Gordon that indicated the addition attached to the north elevation of the existing Activity Room.

Alternative solutions were investigated, but due to the site constraints and internal program orientation, the scheme pursued generally reflects that original diagram. It also provided an opportunity to minimize the impact to the existing building structure thereby minimizing cost by maintaining structural autonomy of the existing building and the addition. The addition exterior envelope was further refined to minimize impact to the existing storm sewer and maintain setbacks from the portion of the sewer to remain. The placement of the addition also addresses setback distances for reinforced CMU walls in compliance with UFC 4-010- 01 requirements. As described in the Structural Narrative, some or all of the parking spaces are under consideration to be eliminated along Barnes Avenue in front of the chapel. This area will be able to be maintained as a drop-off zone for the chapel. This would reduce the designed blast loads on the existing building envelope. Refer to the exterior wall and fenestration paragraphs below.

The size and massing of the addition identifies it as a secondary form in deference to the spiritual significance of the sanctuary. The north wall of the Fellowship Hall is constrained as far south as possible to further reinforce that deference to the sanctuary.

The general form and proportion of the addition is consistent with the sanctuary and Administrative/Activity wing. The roof slope, exterior finish materials and details match the existing construction. The height of the brick on the administrative wing is carried through the addition to create a strong visual link.

Building Functional Layout The layout places a priority on working closely with the existing circulation and utility layouts. The restrooms, although expanded remain in roughly in the same location as the existing building. The spaces, kitchen (future Activity room) and Janitor Closet that need to be relocated to accommodate the revised restrooms remain in the existing building footprint fairly close to the restrooms, thus minimizing the impact of extending sanitary lines to the new locations. A microwave in lieu of a Range will be installed in the new Activity Room.

The original circulation/egress path has been maintained in the existing portion of the design to ensure at least two means of egress for exiting from any space. The Activity Room is located directly adjacent to the Fellowship Hall and has a clear opening for direct access between the spaces. The door at the opposite end of the Activity Room provides easy access for bringing supplies into the Activity Room. A small alcove was provided at intersection of Corridors 108 and 109 for the display of informational material or artifacts.

The Mechanical Room is placed between the existing building and the addition to facilitate pathways for HVAC ductwork and piping. The Janitor’s Closet is located near the service entry and out of the way of the major circulation path between the sanctuary and Fellowship Hall. The Communication Closet is accessed directly from the exterior which is generally the preferred means of access.

2.5.3 EXTERIOR ENVELOPE FOR FELLOWSHIP HALL ADDITION

Roof/Drainage Assembly:

The design intent is to avoid impacting the existing roof and storm drainage system by connecting the addition to the vertical face of the wall rather than build over the existing roof in order to avoid impacting the warranty of the existing assembly.

The existing roof was originally a built-up roof system per the as-built drawings but was replaced with a single-ply EPDM roof membrane. The age of the roof membrane is unknown at this time. The new roof system is proposed to be a fully adhered single-ply, black EPDM membrane to match the existing roof installed over a glass mat gypsum cover board In order to comply with ASHRAE 90.1, a minimum 4“ polyisocyanurate insulation will be used over the metal deck of the main portion of the roof while the lower connecter roof will have minimum 3” polyisocyanurate insulation below tapered insulation to maintain positive drainage to the perimeter .

The gutters and downspouts will be specified as prefinished aluminum due to its corrosion resistance and aesthetic compatibility with the existing gutter and downspouts. The color for the flashing and sheet metal trim components will match existing.

Refer to the Structural Narrative for a description of the roof framing system

Exterior Wall Assembly The general intent is to match the existing assembly in principal, however the assembly will be upgraded to comply with current energy code and seismic design criteria. The brick veneer will match the existing brick veneer as close as possible based on the availability of manufacturer’s standard offering. The structural component of the exterior wall will be 8” reinforced CMU. The core will consist of a 2” air space and 2” closed cell spray applied insulation that also serves as the air and vapor barrier.

The upper portions of the of the north, east and west walls as well as some small areas around the glazing and downspouts, the south gable end wall above the lower roof, and the face of the wall around the main entry door into the Fellowship Hall will be direct applied exterior finish system (DEFS). This will be installed over a cement board substrate on 5/8” glass mat gypsum sheathing supported by cold formed framing. Spray-applied polyurethane foam will be installed in the stud cavity. The color of the acrylic stucco will be white similar to the white employed at the existing chapel. This system was selected due to its light weight, ease of installation, and good thermal performance.

Doors and Fenestration Assemblies selected for the doors shall be chosen not only for the aesthetic value but also durability and thermal performance. All doors and windows will comply with AT/FP criteria per UFC 4-010-01. Pre- finished aluminum window frame extrusions will be thermally broken. The primary exterior entry door into the Fellowship Hall will have laminated glazing to comply with UFC 4-010-01. All exterior hollow metal doors will be insulated, and the doors and frames will be G90 galvanized for corrosion resistance. Hardware specified based on ANSI/BHMA standards and will be compatible with Ft. Gordon hardware standards.

UFC 4-010-01, the glazing as indicated on the design drawings will require eliminating a minimum four spots at the parking on Barnes Avenue in front of the chapel. This area is closed off entirely for parking, it may be used as a vehicular drop-off only. Refer to the Structural Narrative for a more comprehensive description of this condition.

2.5.4 INTERIOR ASSEMBLIES AND FINISHES FOR FELLOWSHIP HALL ADDITION

Ceilings

The ceiling layout in the Fellowship Hall reflects the zones established by the operable partition layout. The majority of the ceiling is ten feet above the finished floor and will be a 2x2 lay-in acoustic system. This is interrupted by gypsum board bulkheads that hold the operable partition rails. To reinforce the Fellowship Hall as special space, the ceiling tile will be an upgraded tile similar to Armstrong Ultima tegular.

The gypsum board portions of the ceiling at the south areas of the Hall are lower and help aesthetically to establish a transition zone between the Fellowship Hall and the Corridor and the Activity Room. The lower gypsum board soffits at the west hall formally tie into the wing walls that conceal the operable panels. These soffits also the HVAC distribution components.

Hardware will be provided to support a ceiling mounted projector that will project toward the north wall of the Fellowship Hall. No projection screen will be necessary since the north wall will receive a reflective finish that is both appropriate for projection and is compatible with the other wall finishes.

Walls and Partitions

The primary finish in the addition is painted gypsum board. The CMU exterior wall is covered by 2 ½” metal studs with gypsum board to give a finished less utilitarian appearance and simplify the installation of wiring and cabling.

Ceiling hung ten foot high operable panel partitions will be used to subdivide the Fellowship Hall into a maximum 3 smaller meeting areas. They will fold back to metal stud and gypsum board pockets when not in use. The design of the panel system will accommodate multiple room arrangements while maintaining necessary egress paths.

Significant demolition will be required around the redesigned restrooms. Some of the CMU walls removed along the Corridor will be replaced with new CMU to maintain the continuity of the finish. There is also a CMU pier that supports a wide flange supporting the roof framing just outside the Women’s Restroom that will be removed and replaced with reinforced CMU pier that works with the new Men’s Restroom layout.

Floors

Linoleum flooring that is both durable and aesthetically compatible with the other finishes and function of the space will be selected for the Fellowship Hall and other locations. The materials selected will be specified in a tile format, in lieu of roll or sheet.

The floor at the entry into the addition will have a recessed walk-off mat to collect dirt and water and the Mechanical Room will be sealed concrete.

Rooms with linoleum flooring and sealed concrete will have a 4” high cove base.

Doors Interior doors will be solid core with clear wood veneer set in a painted hollow metal frames. The doors into the Fellowship Hall and Activity will each have a sidelight with fire rated glazing to allow views between the Corridor and the respective rooms. Hardware specified based on ANSI/BHMA standards and will be compatible with Ft. Gordon hardware standards.

2.5.5 EXTERIOR MODIFICATIONS FOR THE EXISTING BUILDING

Roof/Drainage Assembly

The addition is being designed to have very little to no impact on the existing roof system.

Exterior Wall Modifications

In locations where existing windows are being removed, the openings will be infilled with a brick veneer and 6” CMU backup system that will match the existing adjacent wall system.

New Exterior Door

The exterior door for the Comm Room will be insulated, G90 galvanized for corrosion resistance, and will comply with AT/FP requirements per UFC 4-010-01. Since this door is utilitarian, both the door and frame will be painted on the exterior face to blend with the brick color similar to the egress only doors at the Fellowship Hall addition. Hardware specified based on ANSI/BHMA standards and will be compatible with Ft. Gordon hardware standards.

New exterior doors at the Chapel Main Entrance shall be selected or the doors shall be chosen not only for the aesthetic value but also durability and thermal performance. All doors and windows will comply with AT/FP criteria per UFC 4-010-01. The primary exterior entry door will have laminated glazing to comply with UFC 4-010-01. All exterior hollow metal doors will be insulated, and the doors and frames will be G90 galvanized for corrosion resistance. Hardware specified based on ANSI/BHMA standards and will be compatible with Ft. Gordon hardware standards.

2.5.6 INTERIOR ASSEMBLIES AND FINISHES FOR THE RENOVATED PORTION OF

THE EXISTING BUILDING

Ceilings

The majority of the existing ceilings within the scope of work area will be a 2x2 lay in acoustic system. The ceiling tile selected will be cost effective panel similar to a Armstrong Optima tegular tile. The lower ceiling and soffits will be painted gypsum board. The existing sloped gypsum board ceiling in the restrooms will be lowered and leveled to allow utilities to pass overhead. The existing gypsum board ceiling in the existing Corridor will be lay-in ceiling and lowered to allow for some new HVAC piping and access to that piping.

Walls and Partitions

The primary finish in the renovated spaces is painted gypsum board. CMU will be used where existing load bearing CMU is being removed in order to maintain continuity of the wall material and finish.

Ceramic tile will be used full height at wet walls of the restrooms. Restroom partitions will be High Density Polyethylene (HDPEfor durability and ease of cleaning).

Floors

Durable linoleum flooring that is both durable and aesthetically compatible with the other finishes and function of the space will be selected for the , Corridors and Activity room in order to present a higher end look. The Storage Room, Comm Closet, and Janitor Closet will be sealed concrete for durability and ease of cleaning. Porcelain tile that is the same as the wall tile will be used for the restroom floors.

All other areas will have carpet that is both durable and aesthetically compatible with the other finishes and function of the space will be selected for the Fellowship Hall and other locations.

Rooms with sheet flooring, rolled carpet and sealed concrete will have a 4” high cove base.

The restrooms will have a ceramic tile base that matches the wall tile. Existing wood base salvaged from demolished CMU walls may be reused at new walls in the Corridors to an appropriate transition point. New wood base where required in the Corridors will match the existing profile and finish.

A surface installed walk-off mat shall be specified at the existing south entry into the building.

Doors

Interior and exterior doors will be solid core with clear wood veneer set in a painted hollow metal frames. The door into the Fellowship Hall will have a sidelight to allow views between the Corridor and the Hall. Hardware specified based on ANSI/BHMA standards and will be compatible with Ft. Gordon hardware standards.

2.5.7 FIRE PROTECTION /LIFE SAFETY DESIGN ANALYSIS

The work includes a 2,300 SF addition to a 8,491 SF Chapel with accessory administrative spaces and a gathering space. Latest Code additions were used.

CODE REVIEW to be confirmed by Designer of Record.

A. Occupancy Classification (IBC And NFPA) Facility is a mixed use facility with assembly in sanctuary and fellowship hall

– Fellowship hall and offices become educational with religious education classes

a. IBC Chapter 3- Assembly (A-3) – Sanctuary and Fellowship Hall

(1) Accessory Use: B – Business

(2) Accessory Use: E – Educational (305.1.1) b.NFPA Chapter 12 – New Assembly Occupancies – For Life Safety Consideration

c. NFPA Chapter 13 – Existing Assembly Occupancies – For Life Safety Consideration

d. The building is existing assembly occupancy (Sanctuary) and business occupancy.

NFPA 101,(2018), Chapter 6 requires compliance with the more stringent code where no internal fire rated subdivision are installed to separate the occupancies.

B. Height And Area (IBC Ch 5) C.

A-3 Assembly.

Allowable Area (IBC Table 503) Item Square Feet Base (Type VB): 6,000 Sprinkler Increase: Unlimited ( 507.6)

Frontage Increase: 4,500 (.75*6,000) Allowable: 10,500

Actual:

1st Floor Existing Overall 7,739 Addition 2,300 Actual: 10,039

Allowable Height (IBC Table 504.3) Item Base: 55 feet / 2 story Sprinkler Increase: + 20 feet / 1 story Allowable: 75 feet / 3 story Actual: <75 feet / 2 story

D. CONSTRUCTION TYPE (IBC Ch. 6), (DOR of to follow UFC 3-600-01, Change 4)

a. Type V-B D. NFPA standard 220 (UFC 3-600-01, Change 4, Section 3-3.1.3 and Appendix D)

a. Type V (0,0,0) b.Structural fire resistance (IBC Table 601)

(1) Structural frame: 0 hours

(2) Bearing walls: 0 hours

(3) Floors: 0 hours

(4) Roof: 0 hours (5)

E. INCIDENTAL USES (IBC TABLE 509)

a. None

F. Building Separation (IBC TABLE 602)

a. No adjacent facilities represent an exposure hazard since none are located within 30 feet from other facilities to imaginary lot line per IBC Table 602).

G. Opening Protectives

a. Doors:

(1) Fire door assemblies (Table 8.3.4.2):

i. 1 hour Exit Enclosures – 1/3 hour

(2) Fire Doors: Provide self or automatic-closing fire doors with positive latching hardware.

(3) Doors that resist the passage of smoke: Provide self or automatic-closing fire doors with positive latching hardware. No fire rating required. Doors must not have louvers.(IBC 716.5.9)

(4) Glazing – Maximum opening size at 1/3 hour – 100 square inches (Table 716.5) unless fire-rated glazing meets criteria in IBC 716.5.5.

b.Fire and Smoke Dampers:

(1) Provide fire dampers in all air transfer openings in partitions that are required to have a fire resistance rating.

(2) Provide smoke dampers in air-transfer openings in smoke partitions (NFPA

101:8.4.6.2)

H. Interior Finish (NFPA Chapt. 12)

a. Wall and ceiling:

(1) Exit Access Corridors – Class A or Class B (Para. 12.3.3.2)

(2) Assembly areas300 – Class A, Class B, or Class C (Para. 12.3.3.3)

(3) Educational -

Class A:

Flame 0-25 Smoke 0-

Class B:

Flame 26-

Smoke 0-

Class C:

Flame 51-

Smoke 76-b.Floor:

(1) Exits and Exit Access Corridors – Class II (Para. 12.3.3.3).

I. Means of Egress (NFPA 101 Chapter. 7, 12,13and 14). DOR to Confirm

a. Exit Access Corridors shall be separated from other parts of the building by walls having not less than a 1- hour rating. This does not apply to existing buildings, provided that the occupancy classification does not change (Para. 7.1.3.1).

b. Exits, where required shall be separated from other parts of the building by a separation having not less than a 1-hour rating except at existing construction. (Para. 7.1.3.2).

c. Arrangement of Means of Egress – Where two exits are required, they shall be located not less than one- half the length of maximum overall dimension of the building to be served (Para 7.5.1.3.2).

(1) Maximum Dead End – 20 feet (Para 12.2.5.1.3)

(2) Maximum Common Path – 75 feet where serving less 50 occupants, 20 feet where serving more than 50 occupants (Para 12.2.5.1.2).

(3) Maximum Travel Distance - 200 feet (Para 12.2.6.2).

d.General Arrangement Requirements:

(1) Doors shall swing in the direction of egress travel under any of the following conditions (Para. 7.2.1.4.2):

i. Where serving a room or area with an occupant load of 50 or more.

ii. Where the door is used in an exit enclosure.

(2) Exit Doorways

i. Two exits are required for any space when occupancy exceeds the following:

-New Assembly Occupancies - 49

e. Egress Sizing:

(1) Other Egress Components – Minimum width determined by egress capacity factor of .2 inch per occupant (Para. 7.3.3.1) but not less than 44 inches (Para. 12.2.3.8).

(2)

f. Occupant Load: Example to be completed by DOR FPE

USE GROSS AREA [SF]

OCCUPANT LOAD

FACTOR(IBC 2006

TABLE 1004.1.1/ NFPA

101/ UFC 3-600-01 (2019)

1ST FLOOR

Area A NAVE

OFFICE 410 100

CONCENTRATED BUSINESS USE (Single Workstations)* 7,115 50

FLOOR MECHNICAL ROOM 387 300

FLOOR ELECTRICAL ROOM 399 300

FLOOR COMMUNICATION ROOM 334 300

STORAGE ROOM 798 300

COLLABORATION ROOM 100 386 30

COLLABORATION ROOM 126 262 30

COLLABORATION ROOM 122 203 30

COLLABORATION ROOM 116 204 30

COLLABORATION ROOMS 128 184 30

ELECTRICAL ROOM 183 100

STORAGE 371 300

1 st FLOOR AREA A OCCUPANT LOAD

AREA B

ATRIUM NON - FIXED SEATING 2007 15

AREA C

CONCENTRATED BUSINESS USE(SINGLE WORKSTATIONS) 300 50

LOCKER ROOM/FITNESS 2,878 50

ELECTRICAL ROOM 183 300

STORAGE 371 300

SUBWAY RESTAURANT(FIXED SEATING) 60 seats

Total Area C

H. Fire Alarm and mass notification system (MNS) a. Building is to be considered an inhabited buildings for mass notification requirements in UFC 4-021-01(2010), Chapter 5, b. This will require a Fire alarm voice evacuation system meeting requirements of UFC’s 4-2021-01, 4-010-01 and 3-600-01, section 9-18. The fire alarm and MNS will also comply with NFPA standard 72. c. Fire alarm wiring shall be a minimum of class B per UFC 3-600-01, Change 4, Section 9-18. e. Fire alarm system will include will be compatible with the existing Monaco D-21 fire alarm receiver and also transmit to the DPW operations and maintenance Onyx system.

I Fire Suppression system

a. UFC 3-600-01, Chapter 34 ,section 34-1.1 (a) requires either upgrade to the facility to correct the deficiency or (b) to establish management protocol to establish equivalent life safety to meet NFPA 101 for existing occupancies. They must be approved by AHJ as referenced in UFC 3-600-01, Change 4, Section 2-1.3, US. Army – HQ USACE/CECW-CE. b. UFC 3-600-01, Change 4, Chapter 9, section 9-7.2.1.3 requires type V structures over 5000 ft2 to have an automatic sprinkler system and Section 9-7.2.4 requires throughout the entire facility to include addition, basement, mechanical and electrical/communication c. The sprinkler system will be design to meet NFPA standard 13, and UFC 3-600-01, Chapter 9. It is a light hazard occupancy with maximum spacing of 225 ft2 . d. Design shall include a determination if seismic bracing is required and if so include in the design along with design soil report. e. The sprinkler system design will be hydraulic calculation with submittals per NFPA standard 13, and UFC 3-600-01, Change 4. f. Project requires a QFPE meeting all requirements in the UFC 3-600-01, Section 1-7, responsible for overseeing the development of all shop drawings, submittal review and must be stamped prior to sending to FG DPW DFPE. In addition, they will witness all contractor testing and commissioning and will comply with NFPA 3 and4.

J. Plumbing Systems (IBC Chapt. 29) DOR to Confirm

GS

F

1:1 of

O cc up an ts

W at er

C lo se ts

Va rie s of

U rin al s

La va to rie s pe r 2

D rin k.

Fo un ta in s of

S er vi ce

Si nk s

4,900 300

Nave - Cap 300

Male 150 Female 150 Shared

860 100 GSF/occ 9

Office/ Administrative

Male 1/150 5 Female 1/75 5 Shared

600 4

Activity /Storage

Male 2 Female 2

Existing Building Subtotal

Male 1/150 157 2 1 Female 1/75 157 3 2 Shared 1 1

2,300 15 SF/occ 154

New Fellowship Hall

Male 1/150 77 Female 1/75 77

Total

Male 1/150 234 2 1 2 Female 1/75 234 4 - 2 Shared 1 1

2.6 Mechanical

Existing HVAC Systems Existing HVAC systems serving the Building 29608 encompass a dual temperature two-pipe system with central plant chilled water for cooling and central plant high temperature hot water with a heat exchanger for heating. The two-pipe distribution system feeds fan coils throughout the building as well as hot water fintube heaters in the restrooms and Tower Entry Vestibule. Because simultaneous heating and cooling is not available with the dual temperature system, the ventilation air for the building is unable to be dehumidified prior to being distributed to the spaces when the dual temperature system is in heating mode.

The existing two-pipe fan coil HVAC system shall be replaced in its entirety with a 4-pipe system with controls that meet dehumidification requirements. A seasonal boiler shall be provided to handle the reheat demand in the cooling season when the central plant high temp hot water is offline.

Design Guidance Mechanical systems shall be designed in accordance with the most recent versions of the following guidelines:

International Building Code International Mechanical Code International Plumbing Code UFC 1-200-02 – High Performance and Sustainable Building Requirements UFC 3-410-01 – Heating, Ventilating, and Air Conditioning Systems UFC 4-010-01 – DoD Minimum Antiterrorism Standards for Buildings

- ASHRAE 90.1

- ASHRAE 62.1

- ASHRAE 55

American Society of Heating, Refrigeration and Air Conditioning Engineers (ASHRAE) Handbooks.

NFPA 90A

NFPA 96

The design temperatures shall be as follows:

Outdoor Design Conditions:

Cooling - General 1.0% Dry Bulb Condition - 94 Deg F db / 76 Deg F wb 1.0% Humidity Ratio Condition – 82 Deg F db / 132 gr/lb

Winter 25 Deg F db

Indoor Design Conditions:

General Spaces Cooling 78 Deg F db Heating 68 deg F db

Restroom Cooling Transfer Air from Corridor

Heating 68 Deg F db

Communications Rooms Cooling 72 Deg F db Heating 68 Deg F db

Ventilation systems shall be designed to comply with ASHRAE 62.1. Outside air quantities will be delivered to all air handling systems in accordance with the 62.1 standard. Exhaust air rates will be provided for the restrooms and janitors closet in accordance with the 62.1 standard.

Building 29608 falls within Seismic Design Category C. All HVAC systems with the building shall have component importance factors of 1.0 and therefore be exempt from seismic restraint requirements of

ASCE 7-10.

Building HVAC loads are calculated using Trane Trace 700 software and ASHRAE load calculation methodologies. Lighting loads will be modeled to reflect the actual lighting fixtures installed. ASHRAE Fundamentals Handbook will be used as guidance to accurately model occupant sensible and latent loads as well as miscellaneous equipment loads.

Ventilation air intake openings will be located ten feet above grade. Dampers on outside air and exhaust air openings shall be low-leakage type with a maximum leakage rate of 3 CFM/SF.

Equipment located above the ceiling weighting more than 31 lbs shall be braced to prevent the equipment from falling during a force protection event. An emergency HVAC shutdown switch is not required per UFC-4-010-01 due to the cost of the work being done is less than 50% of the replacement value of the building. However, since a shutdown switch is preferred, a single switch will be located in the Fellowship Hall entrance to shut down the air handling units serving the addition.

All HVAC systems will be tested and balanced prior to the start of commissioning activities. All new HVAC systems within the building will be commissioned.

New HVAC Systems The new HVAC system for the Building 29608 addition will utilize the existing central plant high temperature hot water and central plant chilled water utilities feeding the building to provide cooling and heating. A new building chilled water distribution pump, expansion tank and air separator will be provided to deliver chilled water to the new HVAC systems. Chilled water will be supplied at 42 Deg F and returned at 54 Deg F. The existing high temperature hot water heat exchanger will be replaced with new, appropriately sized to accommodate the added heat load from the addition. A new building heating hot water distribution pump, expansion tank and air separator will be provided to deliver low temperature hot water to the new HVAC systems. High temperature hot water will be supplied at 300 Deg F and returned at 170 Deg F, while the low temperature hot water will be supplied at 180 Deg F and returned at 168 Deg F (based on hot water load and flow rate). New makeup water feeds with reduced pressure principle backflow preventers will be provided for both chilled water and hot water systems. Utilization of a four pipe system will allow for year round cooling and will provide better humidity control for the new HVAC systems. The piping shall be routed above the ceiling and distributed to the new HVAC equipment.

A vertical air handling unit with hot water heating and chilled water cooling coils will be provided in a mechanical closet to serve the new Fellowship Hall, Break , Storage Room and Corridor. Supply air will be ducted above the ceiling to parallel fan-powered VAV terminal boxes with hot water reheat coils above the ceiling. Fan powered boxes will allow for the cool dehumidified air from the air handling unit to be reheated without the use of a heating coil during the summer. This will be necessary since the site high temperature hot water is not available year round. A separate VAV terminal box will be provided for each divided portion of the Fellowship Hall. A fourth VAV terminal box will be provided to serve the Kitchen, Storage Room, and Corridor. Separate VAV terminal boxes will allow for separate temperature control for each zone. Space temperature setpoints will be determined by a building occupancy schedule that is programmed into the DDC system. Space thermostats will be provided with override buttons to allow occupants to override the space temperature setpoint during unoccupied periods. Supply air will be distributed from each VAV terminal box to ceiling diffusers in each space.

Return air will be brought back to each fan-powered VAV terminal box and back to the main air handling unit through a return air plenum. Return air grilles will be provided with sound boots (two ducted elbows with acoustical lining) to reduce sound transmission from the return air plenum. Return air will be ducted from the supply air plenum in the Fellowship Hall to the air handling unit. Return air in the existing building (VAV-4) will be hard ducted back to the air handling unit. Outside air for ventilation will be ducted from a roof-mounted gravity ventilator and will tie in to the return duct main prior to connecting to the air handling unit. Condensate drain piping for the new air handling unit will tie in to the existing condensate drain pipe main in the existing utility trench.

CO2 sensors will be provided in each zone to allow for demand control ventilation when the air handling unit is in operation. Occupancy sensors will be provided in each zone to allow for the air handling unit to not run when all zones are unoccupied.

A wall-mounted ductless fan coil unit with chilled water cooling coil will be provided to serve the new Communications Room. Condensate drain piping for the new fan coil unit will tie in to the existing condensate drain pipe main in the existing utility trench.

The existing range will be replaced with a microwave oven in the new breakroom area. There will be no range or hood requirements in this scope.

All new HVAC equipment will have BACnet electronic DDC controls and tie into the existing Dorsett Technology UMCS. New BTU meters will be provided for both the site chilled water and low temperature hot water heating systems and will be tied into the UMCS.