Attachment 41 - Technical Questions and Answers Volume 5.pdf

Hines VA EHRM Infrastructure Design

Solicitation Responses

Volume 04 www.specializedeng.com

Date: 08/18/2023

Project Name: VA Hines EHRM Infrastructure Design Project #: 21081.001

Re: Solicitation Responses

Specialized Engineering Solutions is submitting a solicitation response for the EHRM Infrastructure Design Project at the

Hines VA in Chicago, IL. Refer to the following information:

1. Sheet B01-M401 – Key Note 8: Cold Aisle Enclosure. Please provide informa4on for what is desired for an enclosure.

Note refers to architectural drawings. Sheet B01-AE420 is unreadable. All words and le5ers are being displayed with symbols or are missing en4rely. Please reissue B01-AE420.

Response: An updated copy of Sheet B01-AE420 is being provided. Addi onally, provide the following specifics for the cold aisle enclosure.

Example Image of a cold aisle system with two rows of equipment. Where a single row of equipment exists, the wall opposite of the equipment row would be a glazed wall panel system. Example:

Hines VA EHRM Infrastructure Design Solicitation Responses Volume 03

Cold Aisle Panel System Specification:

General:

1. Provide cold aisle containment system in locations indicated per plans. Provide manufacturer IMS AMCO or equal.

2. Provide components assembled in United States.

3. Provide full cold aisle containment submittal for design team review prior to purchase. Installing contractor shall field verify existing conditions including final rack locations, all pertinent dimensions, equipment clearances, etc.

4. Cold aisle containment system shall not impede access to rack mounted components.

5. Provide required components to enclose the cold aisle and isolate from the rest of the space. The cold aisle containment enclosure system shall include a frame with supported enclosure system to contain cold IT equipment supply air. The enclosure par44on wall shall be in the plane with the face of the IT cabinets, extending to height of cabinets to completely seal the cold aisle. Ver4cal Panels installed in the plane with the face of cabinet shall be hinged.

6. Containment system may use the structural floor for moun4ng of the enclosure walls.

7. Flexible bulb gaske4ng material shall be provided to ensure a 4ght seal between the ceiling structure and the containment system. Bulb gaske4ng to be provided between the containment and the cabinet.

8. Provide full height filler panels for any cabinets not installed or omi5ed. The containment system shall accommodate replacing filler panels with IT equipment cabinets without modifica4on. Filler Panel frame and construc4on shall match the rigid containment wall panel construc4on and color.

9. Per UL723 and ASTM E84, the system shall not exceed the following surface burning characteris4cs:

10. Smoke development index acceptable range: 0 to 450

11. Flame spread index: less than 2.5 inches per minute

12. Shall meet all requirements for FM Global Data Sheet 5-32 Requirements.

13. All components of the system shall be suitable for installa4on within a data center opera4ng space.

Containment Panel Construction:

1. System shall consist of aluminum extruded frame surrounding 4.5 mm polycarbonate panels. Aluminum extrusions shall have a center channel for affixing moun4ng equipment and securing adjacent panels.

2. Hard wall panels shall be provided for the en4re length of the row.

3. Height of panels shall be coordinated with the cabinet. Hard wall panels shall be easily removable through mechanical fasteners to allow access to the non-contained area.

4. Frames to be anodized clear finish.

5. Provide filler panels and seal all seams between panels, cabinets, and ceiling to create a sealed enclosure to block bypass air.

6. Panel materials shall be UL tested, meet ASTME84, and be acceptable with all local codes.

7. System shall not interfere with the cabinet door sealing or travel.

8. Paneling material shall have excellent UV stability and shall have at a minimum a verifiable 10 year track record with no UV degrada4on.

9. Panel penetra4ons for cables, electrical power distribu4on, or cable tray shall be sealed with Brush.

Heat Activated Ceiling Panel:

1. Provide Containment solu4on to accommodate various height cabinets, in-row cooling units, and/or in-row UPS systems.

2. Ceiling panels shall be fabricated of extruded aluminum frame surrounding 3.8mm clear polyvinyl chloride material.

3. Panels shall span across the aisle width and shall overlap the top of the cabinet by 1”-6”, field verified so to allow exis4ng condi4ons to remain.

4. Panel materials shall be UL-R4036 rated for use under 165°F systems and be acceptable with all local codes. Panels shall be ac4vated at 135°F.

5. Panel material shall also meet or exceed ASTME84 Flame Spread

Hines VA EHRM Infrastructure Design Solicitation Responses Volume 03

Aisle Doors:

1. Doors shall be made from 6560 T-6 temper aluminum frames and have full height 4.5 mm polycarbonate panels viewing panels. Door assembly height shall match cabinet/aisle height.

2. Door shall provide minimum [42] inches clear opening.

3. Door shall be single swing open/ close.

4. Door to have manual mechanism. Doors shall seal 4ght together when closed.

5. Doors to include all hardware for moun4ng to cabinets and floor system.

6. Brush/rubber material shall be used to minimize air leakage while door is in a closed posi4on. Brush/ rubber shall seal against frame.

7. Door frame shall seal 4ghtly to the cabinets and shall have gaske4ng material to prevent air leakage between the cabinets and frame.

Warranty:

1. 10 years from date of owner acceptance

Execu4on:

1. Refer to project Drawings for communica4ons equipment room layout and equipment placement.

2. Communica4ons equipment rooms must be free from dust, dirt, and other foreign materials before installa4on of any termina4on hardware or termina4on of copper or fiber op4c cables.

3. Door to room must be closed during termina4on if area outside room is not dust-free.

4. Provide all components of the aisle containment enclosure from a single manufacturer and for a complete installa4on.

5. Installa4on shall be coordinated by installers for interface with Fire Alarm System and/or VESDA for monitoring or ini4a4on of panel opening upon event.

6. Installa4on shall be coordinated by installers for alignment with Fire Sprinkler System (wet and dry) heads.

7. Installa4on shall be coordinated by contractor to align containment systems and components with supply and return air grilles.

8. Installing contractor to coordinate with ceiling and flooring installa4on teams to align with floor and or ceiling grid for airflow and other systems (lights, sprinkler heads, fire/ smoke detectors, overhead cable tray, overhead power systems, etc.).

9. Install the enclosure system using the manufacturer’s installa4on instruc4ons. System frame must be secured to the floor. The enclosure must be field fi5ed to match height requirements of the cabinets.

10. Install aisle containment door using manufacturer’s installa4on instruc4ons. Door shall be secured to the frame that supports the overhead panels. Installers shall use floor installa4on hardware as provided by the manufacturer. Should addi4onal hardware be required beyond what the manufacturer provided, installer shall provide.