CMS Back on Campus Phase 4 Design DRAFT 100 Percent CD Final Basis of Design Report 07242025.pdf

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FINAL BASIS OF DESIGN

Centers for Medicare & Medicaid Services CMS Headquarters Building

7500 Security Boulevard, Woodlawn, MD, 21244 Back on Campus Phase 4

100% Construction Document Submission July 24, 2025

GSA PROJECT NUMBER: 47PD0224F0053

M+Sa PROJECT NUMBER: 2101.18

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Back on Campus Phase 4 Basis of Design

TABLE OF CONTENTS

1. PROJECT DESCRIPTION

2. PROGRAM OF REQUIREMENTS

3. LIFE SAFETY / CODE REVIEW

3.1. Applicable Codes and Standards

3.2. Code Analysis

4. BASIS OF DESIGN – ARCHITECTURE

4.1. Restrooms

4.2. The CMS Conference Center (The CCC)

4.3. Janitors Closets

5. BASIS OF DESIGN – MECHANICAL

5.1. Existing Conditions – General Overview

5.2. Existing Conditions – The CCC

5.3. Existing Conditions – Restrooms

5.4. Proposed New Work – The CCC

5.5. Proposed New Work - Restrooms

6. BASIS OF DESIGN – ELECTRICAL

6.1. Existing Conditions – General Overview

6.2. Existing Conditions – The CCC

6.3. Existing Conditions – Restrooms

6.4. Proposed New Work – The CCC

6.5. Proposed New Work - Restrooms

6.6. Proposed New Work – Parking Lot Cameras

7. BASIS OF DESIGN – PLUMBING

7.1. Existing Conditions – Restrooms

7.2. Proposed New Work – Restrooms

8. BASIS OF DESIGN – FIRE PROTECTION

8.1. Fire Protection – Existing Conditions

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8.2. Fire Protection - Proposed Design Criteria

8.3. Fire Protection - Scope of Work

8.4. Fire Alarm – Exiting Conditions

8.5. Fire Alarm – Proposed Design Criteria

8.6. Fire Alarm – Scope of Work

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1. PROJECT DESCRIPTION

The Centers for Medicare and Medicaid Services (CMS) Headquarters Facility is located in Woodlawn, Maryland. The project site construction started in 1993 and was completed in 1995. It is a 900,000 SF campus consisting of four structures: The North, South, Central and Warehouse buildings.

The Back on Campus Phase 4 project scope is split into three work areas: Restroom Modernization, a Conference Center and the Parking Lot Renovations. This renovation is the 4th phase in the renovation and modernization of the CMS campus as envisioned in the May 2018 Master Plan. Previous renovations provide guidance on spatial layout, aesthetics, and materials of construction that will bring consistency to the design and construction of this phase.

The Restrooms Modernization includes aesthetic, layout and functional upgrades to the core restrooms original to the building. 16 sets of restrooms in the central, south and auditorium areas will receive upgrades, including the addition of one single user toilet room per each multi-user toilet room in the central and south buildings.

The CCC (CMS Conference Center) will occupy approximately 13,000 SF of existing office space on the first floor of the central building. The area is currently two office suites separated by an exit passageway.

The office spaces have open work areas with cubicles and private offices. The entry door to the suites is off the core circulation corridor which provides direct access to the elevator lobby and main building entrance. The renovation in the conference space will accommodate a new training facility and include classrooms, breakout spaces, prep space, an open workarea, office space and storage space. New finishes and lighting are intended throughout to update and refresh the space. Existing systems will be modified to support the new layout and electrical and communications will be provided according to the final layout and furniture plan.

The janitors’ closets include functional upgrades. The 16 closets in the central, south and auditorium areas will receive walls, ceiling and floor finish upgrades.

Parking Lot renovations will be to mill and pave the existing parking lot and update the lot security cameras.

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2. PROGRAM OF REQUIREMENTS

Restroom Modernization

• New Layout

• New fixtures

• All new finishes

• Single User Restrooms

The CCC

• One large classroom for 84 people

• Four classrooms for 32 people each

• Four breakout rooms adjacent to classrooms for 8 people each

• One private office

• One storage Room

• One prep room

• Open touchdown work areas

Janitors Closets

• New fixtures

• All new finishes

IRA Parking Lot

• New mill and pave of existing lot

• New security cameras

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3. LIFE SAFETY / CODE REVIEW

3.1. Applicable Codes and Standards

The applicable codes and standards for this project are listed below. This project shall use the latest editions of the codes and standards listed below. The technical egress requirements of NFPA 101 shall be used in lieu of the technical egress requirements of the International Building Code.

• Appendix A of the PBS Interim Core Building Standards dated February 24, 2025

• International Building Code (IBC) – 2024 Edition

• International Existing Building Code (IEBC) – 2024 Edition

• International Fire Code (IFC) – 2024 Edition

• NFPA 13, Standard for the Installation of Sprinkler Systems – 2025 Edition

• NFPA 14, Standard for the Installation of Standpipe and Hose Systems – 2024 Edition

• NFPA 70, National Electrical Code, 2023 Edition

• NFPA 72, National Fire Alarm and Signaling Code, 2025 Edition

• NFPA 101, Life Safety Code, 2024 Edition

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

2022 Edition

3.2. Code Analysis

Building Description

Per the as-built drawing HCFCE11 BUILDING CODE ANALYSIS dated April 4, 1994, the Central Building includes:

• Five (5) stories plus a basement and is defined as a high-rise.

• The construction type is TYPE 1B with certain Types of 2A modifications, and the floor construction is 2-hour fire rated.

Per the as-built drawing HCFCE11 BUILDING CODE ANALYSIS dated April 4, 1994, the South Building includes:

• Three (3) stories plus a basement and is not defined as a high-rise.

• The construction type is TYPE 2B with certain Types of 2A modifications, and the floor construction is 2-hour fire rated.

Classification of Work

Per the International Existing Building Code (IEBC), the applicable classifications of work are as follows:

• Alteration Level 2 – it includes the addition or elimination of any door or window, the reconfiguration or extension of any system, or the installation of any additional equipment, and

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shall apply where the work area is equal to or less than 50 percent of the building area. It shall meet the provisions of Chapter 8 of IEBC. New construction elements, components, systems, and spaces shall comply with the requirements of the applicable codes including IBC.

• Change of Occupancy – it shall meet the provisions of Chapter 10 of IEBC. Per Section 1011.5.1 of IEBC, where a change of occupancy classification is made to an equal or lesser-hazard category (higher number) as shown in Table 1011.5, existing elements of the means of egress shall comply with the requirements of Section 905 for the new occupancy classification. Newly constructed or configured means of egress shall comply with the requirements of Chapter 10 of the applicable codes including IBC.

Occupancy Classification

Each portion of a building shall be individually classified, and the occupancy classification is as follows:

• Business – An occupancy used for the transaction of business other than mercantile.

• Assembly – An occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation or similar uses.

• Storage – An occupancy used primarily for the storage or sheltering of goods, merchandise, products, or vehicles.

Per as-built drawing HCFCE12 BUILDING CODE ANALYSIS dated April 4, 1994, the Center Building is considered as a nonseparated mixed use building, and the most restrictive provisions of Assembly were used in accordance with the applicable codes and standards. Where occupancy separation is provided, each separated portion of the building shall comply with the requirements for the occupancy therein.

Compartmentation

Compartmentation shall be provided in accordance with the International Building Code (IBC), the International Existing Building Code (IEBC), and NFPA 101.

Alterations shall not reduce the level of fire protection that is existing per Section 602 of the IEBC.

All new construction elements, components, systems, and spaces shall comply with the requirements of the IBC per Section 603 of the IEBC.

Corridors are not required to be fire-rated because the building is fully sprinklered.

Nonseparated occupancies shall meet Section 508.3 of the IBC and Section 6.1.14.3 of NFPA 101.

Separated occupancies shall meet Section 508.4 of the IBC and Section 6.1.14.4 of NFPA 101.

No vertical floor openings are applicable for this project.

Exit passageway shall be 2-hour fire rated, to match the stairs fire rating.

Egress

Reconstruction shall not make the building less conforming with NFPA 101, or with any previous approved alternative arrangements, than it was before the reconstruction was undertaken per Section

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per Section 43.6.1.1 of NFPA 101.

All new construction elements, components, systems, and spaces shall comply with the requirements of NFPA 101 applicable to new construction per Section 43.6.1.1 of NFPA 101.

Occupant Load

Occupant load factors will be as follows:

Occupancy Classification (NFPA 101) Occupant Load Factor (NFPA 101) [ft2/occupant]

B – Business 150 gross

B – Business (Collaboration rooms/spaces 450 SF) 30 gross

B – Business (Classrooms) 20 net

A – Assembly (Less concentrated use, without fixed seating) 15 net

Storage (In other than storage and mercantile occupancies) 500 gross

Mixed Use

Where a building has multiple occupancies, it will be intermingled in accordance with Section 6.1.14.3 of NFPA 101 and/or be separated in accordance with Section 6.1.14.4 of NFPA 101.

Egress Capacity

The total width of means of egress will not be less than the total occupant load served by the means of egress multiplied by the factor in the table below which is from Table 7.3.3.1 of NFPA 101.

Occupancy Classification Stairways (inches per occupant)

Other egress components (inches per occupant)

Business, Assembly, Storage 0.3 0.2

Accessible Means of Egress

At least two accessible means of egress shall be provided in accordance with Section 7.4.5 of NFPA 101.

Egress through Intervening Spaces

Exit access from rooms or spaces shall be permitted to be through adjoining rooms or areas, provided that such rooms or areas are accessory to the area served. Foyers, lobbies, and reception rooms constructed as required for corridors shall not be construed as intervening rooms.

Travel Distance

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The travel distances listed in table below have been determined based on the building being fully sprinklered.

Occupancy Classification Maximum Travel Distance in Fully Sprinklered Building (ft)

Maximum Common Path of Travel (ft) in Fully Sprinklered

Building

Assembly 250

Occupant load less than 50: 75 ft

Occupant load 50 or more: 20 ft

Aisle accessway: 30 ft

Business 300 100

Storage 400 100

Exit Passageway

Penetrations into and openings through, an exit enclosure assembly shall be limited to the following:

• Door assemblies from normally occupied spaces and corridors and door assemblies for egress from the enclosure.

• Electrical conduit serving the exit enclosure.

• Pathways for devices for security and communication systems serving the exit enclosure, where pathways are installed in metal conduit.

• Required exit door openings.

• Ductwork and equipment necessary for independent stair pressurization.

• Water or steam piping necessary for the heating or cooling of the exit enclosure.

• Sprinkler piping.

• Standpipes.

• Existing penetrations.

• Penetrations for fire alarm circuits, where the circuits are installed in metal conduit.

Interior Finish

Interior finishes shall meet Chapter 8 of the IBC and Chapter 10 of NFPA 101.

Fire Protection Systems

For the rehabilitation work areas, the following shall be provided:

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• The existing automatic sprinkler system shall be modified to provide complete coverage in accordance with NFPA 13 such that the building remains as a fully sprinklered building.

• The existing standpipe system shall be modified to provide complete coverage in accordance with NFPA 14.

• The existing fire alarm system shall be modified to provide complete coverage in accordance with NFPA 72.

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4. BASIS OF DESIGN – ARCHITECTURE

4.1 Core Restrooms

Most of the core restroom pairs (Men’s + Women’s) in the Central and South buildings will be renovated to include two single use accessible toilet rooms with access from the opposite corridor. Multi use toilet rooms will remain gender defined and accessible per ABAAS requirements. Entry to the toilet rooms will remain as is, including water fountains and janitor’s closet locations, however, existing doors, auto operator and frames will be removed to provide touchless entry. Existing chase spaces for plumbing and mechanical will remain and receive new piping systems. These restrooms will receive all new finishes, fixtures, and accessories to match previous phase renovations, as well as new toilet partitions, hard ceilings, and lighting. Janitor’s closet finishes and plumbing fixtures will be upgraded and the door will be refinished.

Single use toilet rooms will have all new finishes, fixtures, and accessories to match previous renovations.

New signage will indicate accessible, single use toilet rooms, and occupancy indicators will be included as part of door hardware.

4.2 The CMS Conference Center

Design considerations:

• Requested program

• Efficient technology

• Screen placement, room orientation, accommodations for AV requirements

• Flexibility

• Natural light / User wellbeing

• Circulation / wayfinding

• Ample circulation space for large groups

• Restroom access

• Work / touchdown / informal gathering space

• Furniture and storage

Design challenges:

• The exit passageway corridor must be maintained

• Column layout and existing fenestration

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Classroom and Breakout rooms

Classrooms will be flexible, efficient, and appropriately stimulating. Electrical, screen placement, and AV components will be carefully considered with furniture layout possibilities for optimizing multiple configurations. Walls and finishes will be planned to meet required acoustics. Lighting will be selected for aesthetics and functionality with desired presentation programs. Glass walls will be selectively placed for filtering natural light, but shades will allow full control when needed.

Hoteling / Touchdown areas

These areas will support users and provide space for a quick break, catching up on work, or informal meetings with colleagues. Electrical outlets for charging and desks or tables to work on a laptop will be included. These spaces are also opportunities to provide visual interest: variety in furniture, pops of color, or interesting lighting.

Finishes and treatments

Preferred design elements and finishes from previous phases will be incorporated to create interior cohesivity within the CMS Headquarters building. Dark aluminum framed glazed partitions will be utilized at classroom entry walls, doors with sidelights, and breakout rooms. Frosted film will be added for additional privacy. Consideration of the wood-look ceiling treatment is included in the preliminary design options and is presented as an element to define circulation paths or to identify or unify architectural elements. Utilizing carefully selected color accents sets the training center apart from everyday workspace areas and creates visual stimulation and energy. Lighting throughout the space will be layered, functional, and dynamic. All finishes and treatments will be selected in accordance with the PBS Interim Core Building Standards.

The CCC Proposed Plan

Users entering from the East are immediately greeted with an expansive lobby area indicating an obvious point for gathering and collaboration. A curved ceiling treatment welcomes visitors coming front the North directing them to classrooms or breakout spaces. Subtle ellipses are utilized reflective of the building’s other primary gathering space, the auditorium, and provide interest. These are expressed and emphasized through ceiling treatments and mirroring carpet changes. The large classroom orientation provides a wider space to allow more users access to the front of the room. Space on either side of the egress corridor is dedicated to touchdown work areas creating a central hub that’s useful and visually engaging. The prep and storage program is tucked slightly out of the way, with office spaces centrally located.

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5. MECHANICAL

5.1 Existing Conditions – General Overview

The areas of proposed work are served by multiple air handling units (AHUs). Supply air from these AHUs are ducted to variable air volume, fan powered air terminal units (ATUs). These fan powered ATUs mix return air from the ceiling plenum with cool air from the AHU (primary air), then distribute this mixed air to diffusers within each space. Several fan powered ATUs have hydronic heating coils to reheat the air provided to the spaces. The fan powered ATUs with hydronic coils are labeled on the existing drawings as “FPHTU-#.” Unit without heating coils are labeled “FPTU-#.” Air from the spaces is returned to the AHUs through open ended ducts located within the ceiling plenum.

The mechanical scope of this project consists of modifying existing ductwork and airflows, providing new terminal units and return air devices where necessary for the new suite and the renovation of various restrooms throughout the central building.

5.2 Existing Conditions – The CMS Conference Center

The space proposed for the suite is currently served by various fan powered ATUs. These ATU’s all receive primary air from existing AHU-1.1. Supply air is distributed to square and linear diffusers throughout the suite. The existing ATU’s serving spaces with exterior exposures have hydronic heating coils. ATU’s serving interior spaces do not have heating coils, and instead rely on primary air mixing with warm air from the ceiling plenum.

Return air is distributed to the ceiling plenum and ATU’s by existing perforated grilles. Air is also transferred back to the AHU through various transfer ducts between the suit ceiling and the corridor ceiling.

5.3 Existing Conditions – Restrooms

Each restroom group is served by an existing fan powered ATU without a reheat coil. These ATU’s also serve the adjacent copy room on each floor. Air from the restrooms is not returned back to the ATU’s, instead each restroom has ducted exhaust air grilles.

5.4 Proposed New Work

All existing terminal units will be replaced. The units are over 30 years old and past their useful life. New terminal units and thermostats are provided to better serve the new zones.

All existing supply ductwork from the air terminals and air devices are shown to be removed. New supply branch ductwork will be provided and connected to new supply diffusers throughout the space.

New supply diffusers will be 24x24 lay-in diffusers. New manual volume dampers will be provided at branch ductwork for new diffusers. New return air grilles will be provided for air transfer into the

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existing ceiling plenum.

5.5 Proposed New Work - Restrooms

Existing airflows at the restrooms will be sufficient for all configuration options proposed. The current exhaust at each restroom group would be able to accommodate up to 20 water closets or urinals and still satisfy code ventilation requirements. New air devices are currently shown where required to coordinate with the new walls. New air devices will be provided for the associated janitor closets.

Diffuser and grille preference to be coordinated with GSA.

6. ELECTRICAL

6.1 Existing Conditions – General Overview

The building is served by two BGE 13.2kV services that enter the building underground, each into a medium voltage switchgear located in the Warehouse ground floor. The two switchgear lineups are connected in a main-tie-main arrangement. Each of these switchgear lineups serve one end of double-ended substations with main-tie-main arrangements located in the penthouses of the North Building, Central Building, and South Building: North Substation #1, ADP Substation #1 (North Building), ADP Substation #2 (North Building), Central Substation #1, Central Substation #2, and South Substation #1.

Each substation serves one or more 480Y/277V, 3-Phase, 4-Wire busways that extend vertically down a set of stacked electrical closets; each building has four electrical closet stacks that serve areas local to the closet on their respective floors. Each closet contains a 480Y/277V panel fed from the busway and a 208Y/120V panel fed from the busway via a suspended step-down transformer.

The building has four generators connected to paralleling switchgear located in the Warehouse ground floor that serve emergency loads for all the buildings via automatic transfer switches located throughout the buildings on the lower levels. Emergency 480Y/277V and 208Y/120V branch panels (via transformers fed from the local 480V panels) are located on every floor of one electrical closet stacks in each building.

The existing building public address system headend is located in the main telecom room on the Lower Level in the Central Building.

6.2 Existing Conditions – The CMS Conference Center

Existing lighting consists of 2-lamp fluorescent 2x2 troffers. The space contains a raised floor system with floor boxes throughout the space, containing receptacles and telecommunications outlets. The space contains ceiling mounted public address system speakers and sound masking system speakers.

6.3 Existing Conditions – Restrooms

Existing lighting consists of 2-lamp compact fluorescent 6” diameter downlights in the center of the rooms and 2-lamp fluorescent cove lights with louvers running the length of the wall with sinks and

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toilets. The rooms contain a public address system speaker above the entrance door.

6.4 Proposed New Work – The CMS Conference Center

New lighting will be LED with linear fixtures in the classrooms and recessed downlights in corridors, kitchenettes and other spaces. A digital lighting control system will be provided that is local to the conferencing center. Occupancy sensors and dimming switches will be provided in all classrooms and photosensors for daylight harvesting will be provided where applicable. New floor box locations will be laid out in a manner that will be flexibility for different furniture layouts. There will be controlled receptacles to meet IECC 2021 energy code requirements. A new public address system will be provided.

The system will be interfaced with the existing public address system headend located on the lower level.

6.5 Proposed New Work – Restrooms

New lighting will consist of round LED downlights in the center of the rooms and toilets, LED perimeter lighting running the length of wall with sinks. Occupancy sensors switches will be provided for automatic on/off operation. New dual function public address/sound masking speakers will be provided and connected to the existing system wiring. New sensor operated fixtures will be hard-wired and served from a 120-Volt branch circuit (likely the existing restroom receptacle circuit). New GFCI Receptacles will be provided by the sinks.

There will be new water heaters and recirc pumps provided in the mechanical room near each restroom.

The water heaters will be powered from the nearest 480V lighting panel as instructed by GSA. The recirc pump will be powered from a nearby 208Y/120V panel. The disconnecting means for the water heater will be a fused safety switch and the disconnecting means for the recirc pump will be a manual motor switch.

6.6 Proposed New Work – Parking Lot Cameras

Infrastructure for security cameras will be mounted to light poles at 18 locations throughout the parking lot. Cameras will be provided by the Division of Physical Security Operations (DPSO). Infrastructure will consist of underground conduit pathways from the building to pole mounted NEMA 4 Hoffman enclosures that are mounted 10’0” above finished grade. These enclosures will provide the individual poles for power and communication; outdoor weatherproof enclosures attached to the existing lights poles; power and fiber lines from the building to the enclosures; duplex receptacle and network equipment with fiber switches and Power over Ethernet (PoE) within the enclosures; and CAT6 cable from the network equipment in the enclosures to the security cameras.

7. PLUMBING

7.1 Existing Conditions – Restrooms

The existing core restrooms have a typical layout of piping extended from domestic water, sanitary, and

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vent risers located within a shared chase between the women’s and men’s restrooms. The exception to this layout would be restrooms 1234 and 1235, in which piping is served the nearby core restrooms 1203/1204.

The central building has a total of four electric domestic water heaters serving the core restrooms. Each water heater serves three restrooms. The exception to this is the auditorium restroom which has its own small water heater in the nearby custodial closet.

The south building has a total of two electric domestic water heaters serving the core restrooms. Each water heater serves three restrooms.

7.2 Proposed New Work - Restrooms

The plumbing scope of this project consists of removing and replacing existing fixtures at various core restrooms throughout the building and all associated piping contained in the restroom. All existing copper sanitary will be replaced with cast iron. New wall carries will be specified given the age of the current carriers. Where required, existing services will be extended to new fixture locations.

The mop sinks in the janitor closets will also be replaced and all associated piping. Backflow preventers will be provided where chemical/soap dispensing equipment is utilized in the janitor closet.

The existing water heaters will be removed. New electric water heaters and hot water recirculation pumps will be provided for each bathroom group in scope. Existing housekeeping pads will be reused where feasible.

The existing galvanized steel domestic water riser will be replaced.

8. BASIS OF DESIGN – FIRE PROTECTION

8.1 EXISTING CONDITIONS

Fire Water Supply

The site is supplied with fire water by a 12” underground water main that is looped around the site. This 12” loop is supplied by the city water supply with two separate water meters and backflow preventer pits for redundancy. There is a fire pump located in the CUP that supplies all fire protection systems on the site. The fire pump is rated for 1,500 gpm at 85 psig. Downstream of the fire pump, the Central Building is supplied by an 8” underground firewater main from the CUP. This 8” main supplies all standpipe systems and fire sprinkler systems within the Central, North, and South Buildings.

Central Building

The existing Central Building Conference space is protected by an existing wet-pipe sprinkler system.

The existing system is supplied by a 2.5” floor control valve assembly located in Stair 1101. The existing

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sprinklers within the area are quick response, K5.6, 165 deg F, concealed pendent sprinklers. The as-built sprinkler drawings dated 06/27/1994 indicate that the existing system in this area is hydraulically designed to discharge 0.10 gpm/sf over a 1,500-sf area in accordance with a light hazard occupancy per NFPA 13. Each stair within the Central Building contains a 4” standpipe riser with a 2.5” fire hose valve.

Additional fire hose valve cabinets are located outside of each stair.

Each existing restroom in the Central Building within the project’s scope area is protected by an existing wet-pipe sprinkler system. The existing systems are supplied by 2.5” floor control valve assemblies that are in the exit stairs. The existing sprinklers within the restrooms are quick response, K5.6, 165 deg F, concealed pendent sprinklers. The as-built sprinkler drawings dated 06/27/1994 indicate that the existing systems in these areas were designed to discharge 0.10 gpm/sf over a 1,500-sf area in accordance with a light hazard occupancy per NFPA 13.

South Building

Each existing restroom in the South Building within the project’s scope area is protected by an existing wet-pipe sprinkler system. The existing systems are supplied by 2.5” floor control valve assemblies that are in the exit stairs. The existing sprinklers within the restrooms are quick response, K5.6, 165 deg F, concealed pendent sprinklers. The as-built sprinkler drawings dated 06/27/1994 indicate that the existing systems in these areas were hydraulically designed to discharge 0.10 gpm/sf over a 1,500-sf area in accordance with a light hazard occupancy per NFPA 13.

8.2 PROPOSED DESIGN CRITERIA

The Conference area and each restroom will be fully sprinklered with a wet-pipe sprinkler system in accordance with the IBC, and NFPA 13. The existing wet-pipe sprinkler systems will be modified as part of this project as indicated in the Scope or Work section below. For all project scope areas, the existing water supply, existing feed mains, and existing floor control valve assemblies will be existing to remain.

It is anticipated that the existing infrastructure is adequately sized to supply the systems in the project scope area. This will be confirmed with hydraulic calculations during the next project phase.

The sprinkler system design criteria will be in accordance with NFPA 13 as follows:

• Office areas, corridors, classrooms, restrooms – Light Hazard occupancy classification o 0.10 gpm/sf over a 1,500-sf area, with a 100-gpm hose stream allowance

• Janitor’s Closets – Ordinary Hazard Group I occupancy classification o 0.15 gpm/sf over a 1,500-sf area, with a 250-gpm hose stream allowance

• Storage rooms – Ordinary Hazard Group II occupancy classification o 0.20 gpm/sf over a 1,500-sf area, with a 250-gpm hose stream allowance

All new sprinkler system piping will be provided in accordance with the PBS Interim Core Building Standards and NFPA 13 as follows:

• Piping 2” and smaller will be black steel schedule 40 piping with threaded ends and threaded fittings.

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• Piping 2-1/2” and larger will be black steel schedule 10 piping with roll grooved ends and grooved fittings.

• Threaded light wall piping and plain end fittings are not permitted.

All new sprinklers will be quick response, K5.6, 165 deg F, concealed pendent sprinklers.

8.3 SCOPE OF WORK

Demolition Scope – The CMS Conference Center

• The existing wet-pipe sprinkler system sprinklers, branch lines, and hangers will be demolished back to the existing mains to accommodate the new architectural floor and ceiling plans.

• The existing sprinkler system mains will remain.

• The existing sprinkler systems outside of the project’s scope area will remain active during construction.

New Work Scope – The CMS Conference Center

• New wet-pipe sprinkler system sprinklers, branch lines, and hangers will be provided throughout the space. The new branch lines will be connected to the existing sprinkler system mains and will be sized with hydraulic calculations.

Demolition Scope – Central Building and South Building Proposed Restrooms

• It is not anticipated that these restrooms will require upsized branch lines as the quantity of sprinklers in not expected to change with the non-full height toilet partitions. Therefore, the demolition scope will be limited to demolishing the existing sprinklers back to the branch line outlets to accommodate the new architectural floor and ceiling plans.

• The existing sprinkler system branch lines and mains will remain.

• The South Building demolition scope will include removal and relocation of an existing fire hose valve cabinet outside of each restroom to accommodate the new architectural floor plan.

• The existing sprinkler systems outside of the project’s scope area will remain active during construction.

New Work Scope – Central Building and South Building Proposed Restrooms

• New wet-pipe sprinkler system sprinklers will be provided throughout the restrooms. The new sprinklers will be connected to the existing branch lines.

• The South Building new work scope will include relocation of the existing fire hose valve cabinet outside of each restroom to accommodate the new architectural floor plan.

8.4 FIRE ALARM EXISTING CONDITIONS

The existing building is provided with an addressable fire alarm system throughout. The existing fire alarm control panel, data center fire alarm annunciator, workstation, and smoke control panel are in the Fire Command Center on the first floor of the Central Building. There is also a graphic annunciator in the

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main lobby of the Central Building, located in the atrium adjacent to the entry/exit doors. The Central Building is provided with a voice evacuation system using speaker/strobes and the South Building is provided with notification using horn/strobes.

The existing fire alarm system is a Siemens XLS System.

Central Building

The existing Central Building conference space is provided with fire alarm notification throughout utilizing speakers, speaker/strobes, and strobes. There is an existing 2-hour fire-rated exit passageway from Stair 1101 to the exterior of the building that is routed through the space. There are multiple doors on hold opens that provide access to this exit passageway. Smoke detectors are located on each side of the doors for closure upon alarm. There is one fire alarm manual pull station located at the exit from the building within the exit passageway.

Each existing restroom in the Central Building within the project’s scope area contains one wall mounted speaker/strobe for fire alarm notification.

South Building

Each existing restroom in the South Building within the project’s scope area contains one wall mounted horn/strobe for fire alarm notification.

8.5 PROPOSED DESIGN CRITERIA

The fire alarm system in the CMS Conference Center and each restroom will be modified in accordance with the PBS Interim Core building Standards and the IBC, and NFPA 72.

• Fire alarm initiation will be provided with manual fire alarm boxes and smoke detectors as required by Appendix A of the PBS Interim Core Building Standards dated February 24, 2025, the IBC, and NFPA 72.

• Fire alarm notification will be provided in accordance with the Appendix A of the PBS Interim Core Building Standards dated February 24, 2025, the IBC, and NFPA 72.

o Audible notification will be provided throughout all areas of the building in accordance with Appendix A of the PBS Interim Core Building Standards dated February 24, 2025.

Speakers will be provided in the Central Building, and horn/strobes will be provided in the South Building to match the existing system types in each building.

o Visible notification will be provided throughout all public spaces and common spaces in accordance with Appendix A of the PBS Interim Core Building Standards dated February 24, 2025. Visible notification appliances will be LED type strobes.

• All new fire alarm conduit and wiring will be provided in accordance with Appendix A of the PBS Interim Core Building Standards dated February 24, 2025. All wiring must be solid copper wiring and must be installed in conduit. Conduit must be rigid metal or electrical metallic tubing, with a minimum inside diameter of 3/4 inch that utilizes compression type fittings and couplings.

FOR OFFICIAL USE ONLY

8.6 SCOPE OF WORK

Demolition Scope – The CMS Conference Center

• The existing speakers and speaker/strobes within the CMS Conference Center will be demolished to accommodate the new architectural floor and ceiling plans.

• The existing smoke detectors used for door closure associated with the exit passageway will remain active during construction, as this exit passageway will be an active egress path. Smoke detectors may be protected to prevent nuisance alarms during the workday but must be returned to service at the end of the day.

• The existing manual fire alarm box at the exit from the exit passageway will remain.

New Work Scope – The CMS Conference Center

• New speakers and speaker/strobes will be provided throughout the Conference space for code compliant notification coverage. New visible notification appliances will be LED type. The existing fire alarm system’s capacity will be evaluated during the next project phase to determine if new booster power supplies will be required based on the required number of new devices.

• All existing strobes visible from the project’s scope area will be replaced with new strobes for synchronization.

Demolition Scope – Central Building and South Building Proposed Restrooms

• The existing speaker/strobe (Central Building) and the existing horn/strobe (South Building) in each restroom will be demolished to accommodate the new architectural floor and ceiling plans.

New Work Scope – Central Building and South Building Proposed Restrooms

• New speaker/strobes (Central Building) and the new horn/strobes (South Building) will be provided in each restroom for code compliant notification coverage. New visible notification appliances will be LED type.

8. BASIS OF DESIGN – FIRE PROTECTION