Att 2 - Narrative - Grand Junction Data Center CD Set.pdf

EHRM DATA CENTER DESIGN NARRATIVE

GRAND JUNCTION VAMC (CD SET) 06 FEB 2024

PROJECT # 575-221

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EHRM Infrastructure Upgrades - Data Center

VA Project Number 575-221

BASIS OF DESIGN NARRATIVE

I. Project Summary (Executive Summary)

Division 01 - General Requirements

Scope of Work The scope of this project consists of design and construction management services for the renovation of approximately 2,000 Sq. Ft. for OIT administration offices and adding a new addition of approximately 1,317 Sq. Ft. for a new Data Center for the EHRM Infrastructure Upgrades - Data Center project 575-221. The design phase of this project includes site visits, field investigation, studies and user interviews to prepare drawings, specifications and cost estimates to upgrade the facility’s EHRM infrastructure. If elected, the solicitation and construction phase of this project includes responding to RFIs, reviewing submittals and shop drawings, maintain logs and due dates, attending meetings, take minutes, perform inspection site visits, commission new equipment, and provide as-builts at project completion.

Current Design Intent of New Construction In conversations with the stakeholders and after a deep dive review of the VA design guide ISTS, we came up with the concept design for the new Data Center, the location for a new Entry room, and the remaining office space configuration.

Regulatory Requirements The design will comply with the latest adopted edition of all applicable codes and standards including, but not limited to:

• VA Directives and Design Manuals:

o PG-18-1 Master Construction Specifications, 2004 o PG-18-3 Design and Construction Procedures, 2022 o PG-18-4 Standard Details and CAD Standards o PG-18-5 Equipment Guide List, 2023 o PG-18-9 VHA Space Planning Criteria:

(Chapter 260: Mental Health Outpatient Services) o PG-18-10:

2014 Architectural Design Manual 2019 Electrical Design Manual 2021 Fire Protection Design Manual 2023 HVAC Design Manual

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2020 Interior Design Manual 2022 Lighting Design Manual 2023 Physical Security & Resiliency Design Manual (Life Safety Protected

Facilities) 2023 Plumbing Design Manual 2023 Signage and Wayfinding o 2023 Structural Design Manual o Infrastructure Standard for Telecommunications Space – Version 3.1 o OEHRM Site Infrastructure and End User Device (EUD) Requirements o Instructions to AE from Grand Junction Engineering

• Other Guidance on the Technical Information Library (TIL) (http://www.cfm.va.gov/til/) not listed above as required – TBD with VA CO coordination.

• 2021 International Building Code (IBC) including International Mechanical and Plumbing Codes (Only when specifically referenced in VA Design Documents, see notes below)

• 2021 NFPA 101 Life Safety Code (see notes below)

• NFPA National Fire Codes with the exception of NFPA 5000 and NFPA 900.

• Occupational, Safety and Health Administration (OSHA) Standards

• VA Seismic Design Requirements, H‐18‐8

• National Electrical Code (NEC)

• International Plumbing Code (IPC)

• Safety Code for Elevators and Escalators, American Society of Mechanical Engineers

(ASME) A 17.1.

• ASME Boiler and Pressure Vessel Code

• ASME Code for Pressure Piping

• 2015 Architectural Barriers Act Accessibility Standards (ABAAS) including VA Supplement, Barrier Free Design Guide (PG-18-13)

• Building Code Requirements for Reinforced Concrete, American Concrete Institute and Commentary (ACI 318)

• Manual of Steel Construction, Load and Resistance Factor Design Specifications for Structural Steel Buildings, American Institute of Steel Construction (AISC)

• Energy Policy Act of 2005 (EPAct)

• DOE Interim Final Rule: Energy Conservation Standards for New Federal, Commercial and Multi-Family High-Rise Residential Buildings and New LowRise Residential Buildings, 10 CFR Parts 433, 434 and 435.

• Federal Leadership in High Performance and Sustainable Buildings: Memorandum of Understanding (MOU)

• Executive Order 13423: Strengthening Federal Environmental, Energy, and Transportation Management

• The Provisions for Construction and Safety Signs to be stated in the General Requirements, Section 01 00 00, of the VA Construction Specifications

• Ventilation for Acceptable Indoor Air Quality – ASHRAE Standard 62.1- 2004.

• Safety Standard for Refrigeration Systems – ASHRAE Standard 15 – 2007.

NOTES:

1. NFPA 101 primarily addresses life safety and fire protection features while the IBC addresses a wide range of considerations, including, but not limited to, structural strength, seismic stability, sanitation, adequate light and ventilation, and energy conservation. VA buildings must meet the requirements of NFPA 101 and documents referenced by NFPA 101 in order to comply with the accreditation requirements of The Joint Commission.

Therefore, designs shall comply with the requirements of the latest edition of NFPA 101 and

Page | 3 documents referenced therein. Design features not addressed by NFPA 101 or documents referenced therein shall comply with the requirements of the latest edition of the IBC or as otherwise addressed above in this Program Guide. For design features that are addressed by both the IBC as well as NFPA 101 or a document referenced by NFPA 101, the requirements of NFPA 101 or the document referenced by NFPA 101 shall be used exclusively (this applies even if the IBC requirements are different). VHA PROGRAM GUIDE PG-18-3 September 2013 3 of 3

2. Conflicts between Nationally Recognized Codes and Standards and VA Requirements

– Should a conflict exist between VA requirements and VA adopted nationally recognized codes and standards, the conflict shall be brought to the attention of VA. The resolution of the conflict shall be made by the authority having jurisdiction for VA to ensure a consistency system wide.

Building Code Analysis Occupancy group and overall means of egress have not changed. Design parameters do not effect building code analysis.

Loading:

Seismic Ss=.24g, S1=.066g, Sds=.256g, Sd1=.105g, R=3.5, Cd=32.25, Ω=32.5, Static Base Shear Coefficient Cs=0.091W Basic Wind Speed = 110 MPH Ground Snow Load = 30 PSF Live Load = 100 PSF Typ and 20 PSF on Roof Importance Factors = 1.1 Risk category – II (Ancillary Facility)

Division 02 - Existing Conditions

Existing Conditions The existing Data Center and OIT administration offices are located in Building 34, consisting of approximately 2,000 Sq. Ft. The existing Main Computer Room (MCR) and/or Data Center is currently located in Building 34 but is not properly configured for data center operations for the campus. HVAC systems are outdated and the mix of hot and cold air is distributed throughout the space. The current ISTS documents have a requirement for 2 diverse entrance facilities. Currently there is only one entrance facility that feeds into the data center for service. Distribution of backbone fiber and copper services in the current data center are not to the ISTS standards and will be addressed in the new data center build. Contractor is responsible for all soil samples, site utility surveys and like items as required in the specifications.

Data Collection The design team has reviewed all provided documentation received from the GJ VAMC as well as current applicable VA standards, codes, and Design Manuals. Existing MCR and office space has been personally observed and documented for existing conditions.

Deconstruction, Construction, and Phasing

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Deconstruction of the existing Data Center will only occur in phase 2, or when the new data center has been constructed, connected, and commissioned. This is to limit down time to only hours over a weekend. All shutdowns shall be coordinated with the VA with 3 weeks in advance.

Phase 1: Build a new data center. Build a new entry room. Refinish OIT reception room. Upgrade electrical system to support new data center. Provide new CRAC units and HVAC to support the new data center. Old data center is to remain operational during phase 1. Also, open office space is to remain functional during construction of phase 1. Contractor to provide protection for access to and from said spaces during construction. General contractor is connecting all campus data to new data center and is to commission data center before phase 2 is to begin.

Phase 2: Demolish old data center and remaining office space. Build new office space as shown in the drawings. Reception room and new data center are to remain operational during the construction of this phase.

Electrical, Mechanical, and Telecommunication systems will require detailed sequencing, phasing, and coordination to insure an operational MCR while the new MCR is being built.

Total construction is expected to take no longer than 24 months.

Long lead items such as UPS-A, UPS-B, Electrical Distribution Panels “DP34A” and DP34B”, Transformers PDU-A, UPS-A, PDU-B, UPS-B, CRAC-CH, CRAC-DX, and the IT Cabinets, are to be submitted for review within the first 30 days of contract as to limit effect on construction schedule.

Hazardous Material Abatement The VA standard for testing existing materials will be followed. There is existing ACM’s located in the open office drywall, and in the East exit door frame. This asbestos containing material is to be abated and removed per specifications and notes on HA drawings.

We will require the general contractor to test for ACM’s before working in areas. Any unforeseen materials that contain hazardous materials will need to be properly handled if encountered as part of the project work. Several newer buildings are not believed to contain hazardous materials. The contractor will be responsible for coordination of all abatement and communication with the VA during demolition and construction of the project.

Physical Security & Resiliency A physical security specialist has reviewed the concept design and is continuing to review the design to verify that all aspects of the Physical Security & Resiliency Design Manual (PSRDM) are met and incorporated into the design.

Per the VA Physical Security and Resiliency Design Manual, Table 12, the new addition is to be designed under the Mission Critical category of buildings and associated requirements. Per Table 6-1 the following criteria apply:

Design Level Threat – W1 Standoff Distance – 50 ft.

Maximum Blast Load – GP2 Effects of Rebound – Included

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Blast loads, analysis, and requirements will be incorporated into the design.

Division 03 – Concrete

Concrete will be limited to cast-in-place concrete for slab-on-grade and structural foundations. The foundations will be supported by micropiles to significantly mitigate the potential for differential settlement between the existing structure and new addition. The micropiles will support a concrete grade beam system, which will provide continuous support for load bearing structural elements.

Additionally, the new foundations will be placed at an elevation to match the existing foundations to meet frost depth requirements. The grade beams will support suspended concrete slab system beneath the access floor.

Division 04 – Masonry

Concrete Masonry Units (CMU) will be used for the perimeter load bearing walls. The thickness and reinforcing of these walls will be determined based on structural loading and blast resistance requirements.

Design Compressive Strength, f’m = 2,000 psi Reinforcing ASTM A615 Gr 60 Fy = 60 KSI Embedded Plates ASTM A36 Fy = 36 KSI Headed Stud Anchors ASTM A108 Deformed Bar Anchors ASTM A496

Division 05 – Metals

The roof structure will be constructed of wide flange beam members supporting a 1.5” deep X 20 gage corrugated metal roof deck. The roof structure will be supported by load bearing CMU walls and structural steel columns.

Wide Flanges ASTM A992 Gr 50 Fy = 50 ksi Angles & Channels ASTM A36 Fy = 36 KSI Plates ASTM A572 Fy = 50 KSI HSS Rectangular and Square ASTM A500 Gr. C Fy = 50 KSI Anchor Rods ASTM F1554 Gr 36 Fy = 36 KSI Metal Roof Decking Fy = 33 KSI

Division 06 - Wood, Plastics, and Composites

Wood, Plastics, and Composites are not included in this project.

Division 07 - Thermal and Moisture Protection

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Design intent is for similar systems of existing building to be utilized in construction of the new addition. Roofing to be membrane roofing, including TPO membrane, fiberglass coverboard, fiber faced polyisocyanurate, and tapered fiber faced polyisocyanurate. Exterior wall will consist of EIFS system over reinforced masonry, with interior side of wall being furred out with batt insulation and vapor barrier.

Division 08 – Openings

Interior doors to be wood panels – wood finish to be determined. Confirmation from the VA on size of double door for the project; the following door size is currently planned:

1. The Interior door to the new Data Center will be a 6’-0” W x 8’-0” H, wood, and tempered glass.

2. New doors to some of the offices, and the entry room will be 3’-0” W x 7’-0” H, wood to match existing.

3. The data center will have a 6’-0” x 8’-0” H hollow metal door on the exterior with no exterior hardware for use in installation and life cycle replacement of equipment.

4. Some existing doors will be re-used as indicated on plan.

Exterior windows in Building 34 are being removed and replaced with new appropriately sized anodized aluminum blast resistant security windows. The remaining administrative offices will also receive new anodized aluminum windows.

Division 09 – Finishes

Flooring –

1. Electrostatic Discharge Rubber Tile throughout.

Base –

1. Rubber wall base throughout unless otherwise noted.

Wall Protection –

1. Rigid Wall Protection panels will be added to all office and corridor walls.

Ceilings –

• 24” x 48” Acoustic Ceiling tile in metal grid system in all locations except Data Center and entry room.

Painting and Coating –

• Gypsum wall and ceiling board will be painted to match existing in Grand Junction VAMC will be used in project.

• Exterior EFIS will match existing exterior of Building 34.

• Coatings will be applied to equipment / systems as required.

Walls –

1. Interior walls, including furring, will be constructed of metal studs from floor to underside of decking above and be covered by 5/8” type X gypsum wall board.

Division 10 – Specialties

Fire Extinguisher Cabinets (FECs) are to be recessed per VA design standards. FECs are to not be installed, whenever possible, in walls that require an STC rating or fire ratings per the VA Design Manuals.

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Division 11 – Equipment

Telecommunication, electrical, and mechanical are covered in their respective divisions.

Division 12 - Furnishings

Furnishings are not included in this project.

Division 21 – Fire Suppression

This design will extend the existing automatic fire suppression system into the new data center and reconfigure the existing system for the remodeled spaces. The new MCR will have open ceilings, and new upright sprinklers will be installed. Additionally, a new clean agent suppression system will be installed in the new server room with releasing panel. A new air sampling smoke detection system with four (4) levels of notification will be provided and connected to the releasing panel. Fire retardant plywood will be provided in all TRs.

Division 22 – Plumbing

The data center design will require humidification systems. As such domestic cold water will be run to the data humidifiers in the CRAC units. Water for the humidifiers will be routed in the wall and run to the CRAC units.

Condensate from CRACs, DX Splits, and the office VRF system will be routed to the existing below floor drain.

All domestic water and condensate piping to be copper. No CPVC and/or PVC shall be permitted on the job.

Division 23 – Heating Ventilating and Air Conditioning

The data center will be supplied with two downflow CRAC units. The CRAC units will be capable of ~125 kW of cooling capacity. The CRAC units will have built in infrared humidifiers, leak detection monitoring, EC fans capable of supplying 0.2” of static pressure, and 4” filter banks. Each unit will be capable of providing 100% cooling capacity for the space to provide an N+1 configuration. One CRAC will be chilled water served from the campus chilled water system. One will be DX. The DXCRAC unit will be connected via refrigerant piping to the outdoor unit with a pumped refrigerant unit capable of providing economizing when outdoor conditions are cold. This configuration can provide a PUE of 1.2 in certain conditions. Outdoor and pumped refrigerant unit will be located on the roof.

The new office space will be provided with a new HVAC system. All existing HVAC is to be removed.

The new system will consist of an outdoor VRF unit and a new Dedicated Outside Air System. The outdoor VRF unit is anticipated to be ~10 tons. The DOAS unit will be ~400 CFM. Each office space

Page | 8 will be provided with an independent thermal zone and thermostat.

The entrance or UPS room will be provided with two DX split systems to provide an N+1 cooling arrangement. Two wall mounted humidifiers will be provided to ensure proper humidity levels.

Division 26 – Electrical

Electrical Service and Distribution for Expansion:

Power System:

Existing Power distribution to the MCR is not adequate and will need to be upsized. The power distribution will have redundant A side and B side power source. This will likely require a new feed from the North Power Distribution/Genset and the South Power Distribution Genset. The MCR and Entrance room will be provided with the 2N Power and backup power with its associated 2N UPS (uninterrupted power supply) system. In the existing electrical room 106, the transformer and Branch Panels are near end-of-life expectancy and will need to be replaced.

Power Calculations.

The MCR will consist of 20 new racks, per the ISTS, we are calculating 5kW for each rack. Together this makes a total load of 100 kW of load for the MCR. The UPS and PDU will be designed for 100kW load. Busway-A serving the first row has 6 racks, requiring 30 kW, or 83 FLA. With a 30 percent of additional capacity, puts Busway-A at 108 amps, using the next size up, we are providing a 200 amp busway. Busway-B serving the second row has 12 racks, requiring 70 kW, or 195 FLA. With a 30 percent additional capacity, puts Busway-B at 252 amps, using the next size up, we are providing a 300 amp busway.

The new Entrance room will be a 3 rack, entry room TR will have with a total load of 5kW each rack and a split system / humidification system that will require 2.6kVA. The lighting in each TR will be 0.16kW or 0.2kW at 125%. This makes a total load of 17.2 kVA load for the new Entrance room. The HVAC will be on backup generator power as well.

The total HVAC load for this space is calculated to be 88.8 kVA. HVAC will be separate from UPS power and not on UPS power but will have generator back up power. The remaining calculated power consumption load for the remodeled space is 60 kVA as shown on panel 34L1A.

With all these spaces added up, the total load calculated load for the MCR addition and the B.34 remodeled space is 266 kVA.

Surge Protective Devices:

Surge Protective Devices (SPDs) will be provided at all service equipment (each main), distribution switchboards, and at each branch circuit panelboard. SPDs units may be integral to the panelboard or switchboard, or individually mounted “stand-alone” units. However, if individual units are used, they shall be placed immediately adjacent to the panelboard or switchboard to minimize the effects of increasing clamping voltages due to excessive lead lengths.

Power and Raceway:

Provide power and raceway for all equipment requiring electrical connections. All equipment and furniture by the Owner/end user, whether it is furnished in this contract or a separate contract, shall be provided with power and raceway rough-in for complete operation.

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Raceways:

All power conductors shall be installed in raceways. All elbows that are greater than 22.5 degrees shall be coated galvanized rigid steel. Raceways that are used for branch circuits serving all areas other than mechanical and electrical rooms shall be metallic to provide a redundant path for ground faults.

Conductors:

Feeders: Feeder conductors that are part of the distribution system and are for circuits rated 100 amps or greater shall be copper. All other feeder conductors, including those used for motor feeders, imaging equipment, elevators, owner furnished equipment and those rated less than 100 amps shall be copper. The total voltage drop on both feeders and branch circuits shall not exceed 5%. When calculating the voltage drop, the load shall be assumed to be 80% of the ampacity of the branch circuit and feeder conductors.

Branch Circuits:

Branch circuit conductors shall be copper with THHN/THWN insulation. All conductors shall be sized per NEC with but shall not be smaller than #12 AWG. Conductors that are #8 and larger shall be stranded. Conductors for branch circuits shall be sized to prevent voltage drop exceeding 3% at the farthest load. The total voltage drop on both feeders and branch circuits shall not exceed 5%. When calculating the voltage drop, the load shall be assumed to be 80% of the ampacity of the branch circuit and feeder conductors. Calculated load on branch circuits shall not exceed 80% of the conductor rating at 75 degrees per NEC. Provide a 20 ampere/120-volt branch circuit to supply not more than 2 offices or 8 convenience receptacles or 4 receptacles that are used for computer workstations. Provide dedicated 20 ampere/120-volt circuits for receptacle above a counter, serving a copier, or owner furnished equipment.

Grounding/Bonding:

All Switchgear, Transformers, UPS’s, Conduit, Racks, Cable Tayes and all other equipment that has metal will be grounded per the NEC, NFPA, ISTS, ANSI/TIA-607-D and all other applicable codes.

All ferrous metallic conduits will be properly bonded using bonding bushings. Maximum resistance allowed for the Data Center and the Entry room is 3 ohms. All data center and entry room ground/bonding shall be tagged with “Do Not Disconnect” signs.

Lightning Protection:

A lightning protection system will be provided meeting UL and NFPA 780 requirements.

Systems Coordination:

A fault, Arc Fault, and coordination study shall be performed by a licensed electrical engineer to indicate available fault current at all points in the distribution system. Fuses and circuit breakers shall be selected to ensure minimum system outage due to overloads or fault currents. Breakers with adjustable long time, short time and instantaneous delays and/or pickups shall be set at levels that provide optimum system coordination. Where ground-fault protection is required for operation of the service disconnecting means an addition step of ground-fault protection shall be provided in all next level feeder disconnecting means downstream towards the load. Where such ground-fault protection is provided the operation of the service and feeder disconnecting means shall be fully selective such that the feeder device, but not the service device, shall open upon ground-faults on the load side of the feeder device. A six-cycle minimum separation between the service and feeder ground-fault tripping bands shall be provided. Ground-fault protection with automatic disconnecting means shall not be installed on the load side of the alternate power source for emergency systems or downstream of transfer switches. Ground-fault indication of the emergency source shall be

Page | 10 provided as required by the NEC. Arch Fault labeling will be provided for all electrical gear.

Lighting:

The lighting design will comply with IESNA recommendations and practices for lighting as listed in the Illuminating Engineering Society of North America Lighting Handbook, 9th Edition, RP-1-04 “Office Lighting”, RP-5 “IESNA Recommended Practice of Daylighting”, and RP-29-06 “Lighting for Hospitals and Health Care Facilities”. New lighting will be LED with controls that adhere to ASHRAE 90.1, as well as the VA Sustainable Design manual. The LED in combination with dimming controls and occupancy sensors will produce an efficient life cycle cost.

• Energy Efficiency: The design will comply with the 2018 International Energy Conservation Code.

Wherever possible, opportunities for reducing the ambient level of lighting while designing appropriate task lighting will be used. Consideration will be given to multi-level switching systems, load shedding, vacancy & occupancy sensors, daylight controls and other energy-reducing techniques.

• All switching in offices and exam rooms will be momentary switches with dimming control. These momentary switches will be compatible with the vacancy sensors in these spaces (per 2012 energy conservation code requirements).

• Lamps: LED fixtures will be the standard for the new expansion. Color temperature will be 3500K.

• Visual tasks to be performed by the users will be identified. A quantitative and qualitative analysis of each visual task will be completed, and consideration will be given to using indirect lighting in spaces to improve the quality of lighting, especially where electronic displays are used, or intense visual activities are performed. Fixture types will be selected for spaces requiring flexibility and will be capable of simplified relocation.

• Unless otherwise specified, illumination levels will meet the IESNA requirements for the spaces and tasks in each specific area of the facility, utilizing a midrange weighting factor. Minimum maintained average horizontal foot-candle (fc) levels are listed below. Deviation from these may be required to accommodate individual space needs.

• Private Offices: 30 plus task light

• Open Offices: 30 plus task light

• Lobbies, Corridors & Stairways: 20

• Telecommunications Room: 30

• MCR: 40

• Storage Rooms: 15

• Mechanical/Electrical Rooms: 20

• Walkways: 1

Division 27 – Communications

Telecommunications:

All EHRM data center upgrades will be done according to the “Infrastructure Standard for Telecommunications Spaces” Version 3.1. The new data center build will be based on the requirements for a Campus Support Center (CSC). CSCs are stand-alone data centers that provide specific IT functionality to a VA campus supporting all VA tenants on that campus and in the geographically supported area.

Entrance Room:

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The ISTS documents have a requirement for two entrance rooms for diverse carrier demarcation points. These entrance facilities must have a minimum separation of 66’. The Bldg. 33 entrance facility should stay in operation as entrance room one, and a new entrance room will be constructed as a part of the data center build to meet the diverse carrier entrance requirement.

Data Center Cabinet and Containment:

Cold air distribution into the room will be utilized for proper management of airflow to the equipment in the racks. The hot aisle containment will exhaust into the ceiling plenum utilizing vertical exhaust ducts from the top of the rack to the return duct and then be returned back to the CRAC units.

Communications Backbone:

All fiber within the EHRM upgrade for the campus should terminate both the “A” and “B” path into the new data center. This work will be coordinated with the consultant currently in design with the EHRM upgrade. All secondary fiber backbone will consist of multimode OM4 pre-terminated fiber trunks, and Cat6A copper pre-terminated trunks routed within the data center and terminated in the cabinets. This secondary backbone will distribute from MDA-A, and MDA-B to HAD-A, and HDA-B, Then from HAD-A and HAD-B to each of the edge distribution within the cabinets.

Communication Pathways:

Basket tray distribution will be laid out in the data center to provide required pathways for cable distribution. Fiber gutter will also be laid out to provide the required pathway for any required fiber jumpers to be connected cabinet to cabinet.

Horizontal Cabling:

All fiber within the EHRM upgrade for the campus should terminate both the “A” and “B” path into the new data center. This work will be coordinated with the consultant currently in design with the EHRM upgrade. All fiber backbone will consist of multimode OM4 pre-terminated fiber trunks, and Cat6A copper pre-terminated trunks. All termination gear will be utilizing Leviton as the termination equipment.

Network Equipment Cabinets:

Network equipment racks will be designed using a 45 RU, 1000mm x 1200mm, white in color.

Mounting rails will be square punched. Standard density cabinets will be designed using a 45RU, 600 mm x 1200 mm cabinet white in color.

Division 28 – Electronic Safety and Security

Fire Alarm:

• The existing fire alarm system will be extended to cover the new data center. New devices, circuits, amplifiers, and power supplies will be added as required to support the new work.

• An update to the workstation graphics will be provided if the system exists.

• Smoke detection or heat detection will be installed as required to meet design goals. An air sampling smoke detection system will be provided in the data center and connected to

Page | 12 a clean agent releasing panel. The fire suppression system(s) monitoring will be maintained.

• The fire alarm annunciation will operate in public mode to notify all inhabitants or occupants of the area protected by the fire alarm system.

• Evacuation speakers will be used to provide the audible notification.

• Strobes will be used to provide visible notification.

• Duct type smoke detectors will be installed in the supply/return of air handling equipment over 2000 cfm.

• Duct type detectors will be installed within 5’ of all fire/smoke dampers. Detection of smoke by the associated duct detector will actuate the damper, shut down the associated air handler, and provide a supervisory signal at the fire alarm panel.

• Smoke detection will be provided in the CRAC units to initiate shutdown of CRAC units.

Security:

Access Control System shall include:

• Card access door control

• Door monitoring

Access control system equipment will consist of distributed processors connected to a system head-end computer. All electronic locking of doors, especially egress doors, that may be required must meet all applicable codes and be coordinated with local authorities.

Access door control with proximity card readers shall be included on:

• Data Center

Entry Gate:

Access Control System shall include:

• Card access

• Pin pad access

Video Surveillance:

Video surveillance system shall include:

• Camera and intercom for communications to the police dispatch center.

Division 32 – Exterior Improvements

The following narrative has been updated to support the civil/utilities portion of the project. The structure will be expanded to the south. A detailed site and demo plan for the new building location is provided.

Existing Utilities and Proposed Utility Relocations:

Select existing utilities were surveyed and located using GPRS. Extra care must be taken to protect existing utilities throughout the duration of the work. A singular downspout in the midpoint center of the building will be directed to the street curb.

For all proposed utility relocations, top of pipe on the alignment(s) will be indicated. A portion of the existing water, sewer, and electric lines will need to be demolished, removed, and rerouted around

Page | 13 the building expansion as shown on plans. The contractor will need to adjust access, rims, and other surficial items related to the utilities. These need to be closely coordinated with the COR and the VA to ensure proper placement and safety of anyone who uses the site. Special care will be taken to design the utilities if they cross existing utilities. All designs were made to comply with VA standard specifications and drawings. An 8” active sewer will be slightly re-routed to accommodate the addition. An 8” and 6” fire lines will be re-routed south within the road in addition due to conflicts created with the new building footprint. Detailed capacity or hydraulic analyses were not completed.

Proposed Vehicle Entrance Gate:

It is proposed that a secure, electronic, motorized gate be placed near the eastern exit of the large parking lot on the western edge of the campus. This will restrict vehicular access to the central portions of the campus and the building expansion due to security analysis.

Specifications The following specifications will be required. This list may be modified in the future.

• 31 20 00 EARTHWORK

• 32 31 40 HIGH SECURITY FENCES AND GATES

• 33 10 00 WATER UTILITIES

• 33 08 00 COMMISSIONING OF SITE UTILITY SYSTEMS

• 32 05 23 CEMENT AND CONRETE FOR EXTERIOR IMPROVEMENTS

• 32 12 16 ASPHALT PAVING

• 33 30 00 SANITARY SEWER UTILITIES

• 34 71 13 PASSIVE VEHICLE BARRIERS

Division 33 – Utilities

The data center is to be connected to a second telecommunications utility feed brought into the site from the Northeast corner of the VA property. This is to be coordinated with the local utility company.

Division 34 – Transportation

With the vehicle gate as described above, there will be passive vehicle rock barriers as described in the drawings and specifications.

END OF BASIS OF DESIGN NARRATIVE