HomeMy WebLinkAboutAttachment E - Prefabrication Data Center Bid SpecsWaterloo IA Prefabricated Concrete Shelter Page | 1
REQUEST FOR BID
Prefabricated Concrete Shelter Contract #1113
512 University Avenue
Waterloo IA
April 2025
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1 Base Bid – New Concrete Shelter
The Proposed Solution should be developed to incorporate the specifications and requirements described in this
BID. A list of Attachments and Exhibits containing additional specifications and requirements for this BID include:
1. Attachment A - Conceptual Shelter Layout: provides a conceptual shelter floorplan.
2. Attachment B - Equipment Rack Elevations: provides a reference diagram of each rack and the maximum
power draw of its equipment for use in configuring the proposed AC/DC power systems, distribution, and
cooling.
3. Attachment C - Estimated Power and Cooling Specifications: provides reference power and cooling
requirements for the shelter using the maximum power draw from vendor data sheets for use in
configuring the proposed AC/DC power systems, distribution, and cooling.
4. Attachment D - Site Location: provides an overhead view of the property, the location available for the
shelter, and its orientation.
Owner will provide Seller access to the assets, services, and infrastructure of Owner to the extent they are
available and are needed for construction and installation of the Proposed Solution. Owner will use its best
efforts to make such assets, services, and facilities available to Seller upon request.
The Owner requires the shelter and generator components of this bid to be installed and commissioned by
9/25/25. Sellers that cannot commit to this date may be disqualified.
1.1 Physical Construction
The shelter shall conform to the design, floor plan, and usable square footage represented in
Attachments A - D.
The shelter shall be of precast concrete construction with a new polyvinyl covering.
Outside Dimensions shall be approximately: 12’ width, 16’ length, 10’ height.
Interior Dimensions shall be approximately: 11’ width x 15’ length x 9’ height.
The minimum structural load ratings shall be:
• 150 pounds per sq ft distributed floor load capacity on foundation
• 100 pounds per sq ft distributed roof load
• 130 mph wind speeds
The shelter shall include one (1) 36” wide X 84” high insulated steel exterior door with cast-in painted
steel door frame, tamper-proof hinge, aluminum threshold and door sweep, weather-stripping,
panic hardware with lever handle, deadbolt lockset, hydraulic door closer, and fiberglass weather
hood.
The shelter shall include one J-Box adjacent to the door for card reader prep.
The exterior of the shelter shall be exposed aggregate with a medium beige colored exterior finish.
The shelter walls shall be bullet-proof to a minimum UL 752 Level 4 standard.
The shelter walls shall have a minimum two-hour fire rating.
The shelter shall be insulated to a minimum of R-11 for walls, R-15 for ceiling, and R-7 for floor.
The interior walls and ceiling shall be sheathed with white HDPE coated board or equivalent.
The floor covering shall be a light-colored material grounded for electrostatic discharge.
The shelter shall have anchor points at each corner of the base, sufficient to provide stable support
of the shelter at the specified wind speed.
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The Seller shall provide detailed specifications for use in constructing a suitable foundation for the
shelter. The specifications shall include all penetrations, tie-downs, conduit entrances, ground
field, and utility/genset connections required in the foundation.
The Seller shall ensure the proposed shelter complies with all Federal, State, and Local building
codes in Waterloo IA.
1.2 AC Power Distribution Service
Supply and install a NEMA-compliant meter base on the exterior that will accept a single-phase
120/240v 200A utility service and meter from the local utility provider.
Supply and install a 1” thick plywood board (3’ x4’) back- board on the interior for mounting the AC
service panel and master AC Mains on/off switch.
Supply and install a service-rated disconnect switch and a 120/240VAC 200A single-phase NEMA-1
snap-in service distribution panel including breakers for all installed equipment and loads. The panel
should have 42 positions capable of accepting snap-in resettable breakers (See Attachments A - D).
Extend correct gauge wiring rated at 200 A from the utility meter through the wall to the AC Mains
on/off switch. All exterior electrical wire will be protected in ridged EMT-type conduit.
Supply and install a secondary transient surge protector device near the AC load center.
Supply and install a low-profile 120/240VAC single-phase service-rated Auto Transfer Switch (ATS) in
an internally mounted NEMA enclosure to activate a secondary VAC feed from the back-up power
generation system when the primary power is disrupted. ATS service must be user-programable, to
institute power disruption generation engagement tests on a maintenance interval basis.
Supply and install AC outlets as follows (See Attachments A - D):
• Four (4) 120v NEMA 5-15R wall mounted specification grade duplex receptacles on the front and
rear walls of the shelter and above the work desk on a shared breaker.
• Two (2) 240v NEMA L6-30R twist lock receptacles mounted above relay rack RR5 to the cable
ladder trays above it wired to breakers in the AC main panel.
• Two (2) 120v NEMA L5-20R twist lock receptacles mounted above relay rack RR5 to the cable
ladder above it wired to breakers in the AC inverter subpanel.
• One (1) 120v NEMA 5-15R specification grade exterior duplex receptacle on a ground fault
interrupter circuit and 20A breaker.
Supply and install appropriate breakers for all AC loads in the shelter. Each breaker’s purpose shall
be clearly labeled.
Supply and install two (2) 50A 120v/240v breakers for connection to the DC power system rectifier
shelf.
All wiring shall be installed in surface-mounted conduit or wireways and shall be in full compliance
with ANSI/NFPA-70 – The National Electric Safety Code, latest revision.
1.3 Grounding/Bonding/Lightning Protection System
All grounding cabling shall route/terminate to a single point. AC shall reference the panel’s neutral
ground bond and DC shall reference its common bus bar. Those common points shall be bonded to
an exterior ground rod.
Supply and install a stranded # 4/0-gauge wire serving as a neutral ground bus, secured with tie
straps to the overhead ladder rack and bonding all electrical components to a very-low resistance
ground rod installed in the soil near the utility meter.
Supply and install one (1) 1/4” X 4” X 20” insolated ground plate for bonding the neutral ground bus
to the equipment racks.
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Supply and install one 3/16” x 3/4” copper bus bar at the top of RR3 through RR5
Bond all high voltage equipment, enclosures, racks, and cable paths to the ground plate using # 4/0
ground conductor.
The shelter shall have a 3/4” round exterior exit at the base of the wall below the isolated ground
plate to be used for ground conductor connection to the exterior ground field.
1.4 Interior and Exterior Lighting
Supply and install six (6) LED ceiling fixtures rated at 3500lum/4000kel, wired-back to an entry door
switch (See Attachments A - D).
Supply and install an “Emergency Exit” light fixture (red), unswitched.
Supply and install an exterior dusk-to-dawn light above the entry door with a protective steel guard.
Supply and install an emergency power-fail LED safety operating light connected to a 90-minute
minimum field-serviceable DC battery pack that turns on/off with power from AC mains panel and
recharges automatically.
1.5 Air Conditioning System
Supply and install two (2) new 1.5-ton, 240V/single-phase, 11 EER or better, external mount air
conditioning units with low ambient and compressor anti cycle controls, integral electric strip heat,
and washable dust filters. The AC units will be mounted to the outside wall of the shelter (See
Attachments A - D).
The system will be equipped with redundant lead/lag controls as required to allow equal operating
time on each air conditioning unit.
The system shall include an Ethernet/IP controller supporting remote monitoring of system status,
performance, and alarms.
Supply and install wall-mounted temperature and humidistat controls.
The chosen supplier must be able to readily maintain the units, provide phone support, and stock
critical replacement parts from a local office within 1 hour of Owner.
The units will be wired back to the AC distribution panel to appropriate breakers and ground.
1.6 Fire Suppression System
Seller will provide an appropriately sized fire suppression system utilizing a widely available clean
agent with a delayed discharge trigger and manual controls for emergency discharge and
cancellation of a triggered event.
The system shall include an Ethernet/IP controller supporting remote monitoring of system status,
performance, and alarms.
Seller will perform all pressure testing and certification of system in compliance with Owner fire
code.
The chosen supplier must be able to readily maintain the system, provide phone support, and stock
critical replacement parts from a local office within 1 hour of Owner.
1.7 Additional Accessories and Built-In Features
Supply and install two (2) 2-post 19” wide x 7.0’ high equipment racks positioned at RR3 – RR4 and
one (1) 4-post 19” wide x 7.0’ high equipment racks positioned at RR5, spaced according to
Attachments A - D and described below:
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• RR1 – space for a 23” rack containing a -48v DC power system, breaker panel, and batteries
• RR2 – space for a 23” rack for future growth
• RR3 – 19” rack for backbone/distribution FDPs and OLT access equipment (DC power)
• RR4 – 19” rack for future growth
• RR5 – 19” 4-post rack with square hole mounting for AC powered equipment
Supply and install an overhead 12” wide cable ladder tray distribution system approximately 12”
above the racks and 12” below the ceiling to manage cable drops to each of the racks and entrance
fiber distribution to the FDPs (See Attachments A - D).
The shelter will include two cable entrances located 12” below ceiling and sized to accommodate a
22” radius cable sweep onto the ladder. The entrances will be approximately 15” x 16” and
positioned within 22” x 28” wall recesses for mounting of an external NEMA-3 enclosure.
The cable entrances will be covered with a NEMA-3R enclosure, sealed to the shelter wall, with 6 x
2” conduit ports in the bottom and a removable lid.
Seller shall disclose all warranties on the shelter structure and components to the Owner in their
response.
All warranties shall be extended and transferred to the Owner upon final acceptance at delivery.
Warranty periods shall begin on the date of shelter commission.
Supply and install a wall-mounted holder for shelter documentation to ensure that all required
operational instructions, equipment manuals, wiring/cable drawings, certifications, support contact
information, safety guidelines any other pertinent documents are both displayed and stored
together.
Supply two (2) complete sets of master as-built documents (1-digital, 1-paper) containing the shelter
mechanical, electrical, fire suppression, DC power, and low voltage designs, and all approvals of the
local utility provider, public works, and local fire Marshall.
Supply and install safety components including first aid kit, eye wash station, and fire extinguisher.
Shelter installation kit shall include:
• Tie-down plates and hardware
• Touch up paint for shelter/trim/HVAC
• Door lock for secure travel during shipping
• Concrete patch
• Extra caulk for awning/etc.
1.8 Back-Up Diesel Generator
Supply and install a single-phase 120/240v 20kW diesel generator and provide all required
connections to the ATS for normal operations.
The generator tank shall be sized for a minimum 24-hour runtime supporting the full estimated AC
load of the shelter as shown in Attachments A - D.
The generator shall provide electronic control for automatic remote starting/stopping, frequency
and voltage regulation, alarm and status message display, output metering, auto-shutdown at fault
detection, and self-diagnostic capabilities.
The generator shall support SNMP-based telemetry to monitor operational status including, but not
limited to, run state, temperature, oil level, run time, and fuel level.
The generator shall support a flexible exercise mode to allow exercise time, frequency and duration
at the Owner’s preference.
The generator shall include a battery heater.
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Seller shall specify the expected date for delivery and install.
1.9 Inspection, Delivery, and Commissioning
Provide pictures and/or video of the shelter construction progress periodically to enable the Owner
to provide immediate feedback and issue change orders if any are identified prior to final inspection.
Provide transportation and offload of each shelter to the Owner’s designated location. The Seller
shall coordinate end-to-end transportation including any intermediate transfers in transit, and will
specify the cost of transportation, offload, and insurance for each shelter on separate line items in
their response.
The Seller shall retain ownership of the shelters until formal acceptance by the Owner at the point
of delivery. All shelter components should be disassembled and packaged to withstand
transportation.
The Seller is responsible for complying with all weight restrictions on all transportation routes.
Packaging of the shelters and inside plant components to meet these restrictions must be included
in all quoted pricing.
The Seller shall provide professional services to reassemble all components located inside and
attached to the shelter after site prep and AC power connections are completed. The Seller shall
commission the shelter systems and train Owner staff on all supplied components.
The Seller shall commission the generator to verify proper start-up and transfer switch operation.
2 Alternate Bid – Refurbished Concrete Shelter
2.1 Refurbished Specifications
Propose a refurbished concrete shelter meeting the approximate dimensions, minimum
specifications, and other requirements of Section 1.1.
Outside and inside dimensions of refurbished structures may vary no more than 6” in length and
width from those listed in Section 1.1.3 and 1.1.4.
The Seller shall perform the following tasks in refurbishing the shelter:
• Thoroughly clean, refinish, and seal all concrete surfaces
• Cap and seal all unused entry ports
• Inspect and seal all wall/floor/ceiling penetrations
• Caulk all seams
• Replace/refinish all metal components that are damaged and/or rusted