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Architects
| Design Architects: |
Cesar Pelli & Associates |
| Associate Architects: |
Kendall/Heaton/Associates, Inc. |
| Structural Consultant: |
CBM Engineers, Inc. |
| Mechanical Consultant: |
I.A. Naman & Associates, Inc. |
| Electrical Consultant: |
I.A. Naman & Associates, Inc. |
Physical Properties
| Date Built: |
1989 |
| Total Site Area: |
1,270,000 gross sq ft above ground |
| Total Rentable Area: |
1,196,036 sq ft |
| Stories: |
57 |
| Building Height: |
772.5 feet above ground |
| Washrooms/Floor: |
2-4 |
| Elevators: |
Passenger: 28
Freight: 2
Teller Elevator: 1
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| Structure: |
Structural steel core with concrete overlay and structural steel framing. |
| Exterior Cladding: |
Kasota, a local Minnesota limestone, gray dual-pane glass, accented with white carrara marble. |
| Base Exterior: |
New Imperial Granite |
Lobby Finishes
| Walls: |
Crema Valencia |
| Walls in Rotunda: |
Rossa Verona marble |
| Floors: |
New Imperial and Stoney Creek Granite |
| Doors: |
Brass |
Typical Floors
| Walls/Columns: |
Drywall partition, a continuous, floor to ceiling partition with 90 degree corners |
| Floors: |
Concrete |
| Ceiling: |
Natural Fissured II Auratone Acoustical panels tapered 5/8”, 2x2’. Tegular lay-in white factory finish, exposed direct hung ceiling suspension system installed at 9’-0” AFF. |
| Doors: |
Full height solid core premium grade, quarter sliced, sapele veneer with natural finish. |
| Windows: |
Levolor-type blinds for exterior windows with 1” wide blades in a standard “alabaster” color. |
Architectural Planning Data
| Elevator Lobby Width: |
10' |
| Ceiling Height: |
9' slab to finished ceiling, 12' floor to floor |
| Hardware: |
Sargent brushed brass. |
| Design Live Load: |
50 psf |
| Drinking Fountains: |
1 per floor |
Mechanical Systems
| Air Distribution: |
Each floor has its own dedicated air handling unit which feeds a mixture of outside air and return air to the fan powered boxes in each zone. The building management system controls the AHU by static pressure and discharge air temperature set points. The design set points for the air handling units are 51°F for discharge air and ˝" of static pressure per floor. There are two (2) outside air dampers in each of the mechanical rooms to allow better control of the cubic feet per minute of fresh air entering the room. |
| Zones/Floors: |
There are 1,572 total zones controlled throughout the building by the Building Management System (BMS). There are an average of 18 perimeter zones and 10 interior zones per floor. |
| Thermostats: |
Each zone is monitored by a wall-mounted thermistor, which report directly to the BMS. The BMS controls the zone temperature off a 1°F fluctuation in temperature. The building standard is 73 to 74 degree deadband. |
| Cooling Capacity: |
The tower is equipped with three 900 ton chiller and one 850 ton chiller. A 400 ton plate heat exchanger serves the winter cooling needs. |
| Outside Air Design: |
The outside air is distributed to the mechanical rooms in two (2) zones. The upper zone (56 to 25) has two (2) air handling units that produce 80,000 cubic feet per minute in the winter and 27,000 cfm in the summer. The lower zone (floors 24 to LL1) has two (2) air handling units that produce 83,000 cfm in the winter and 27,000 cfm for summer operations. |
| Heating: |
Heating is provided by the use of three (3) hot water loops. Two (2) 180° loops feed the perimeter fan powered boxes throughout the building. They are split into high and low zones, the high serving floors 35 to 55 and the low feeding 4 through 34. A separate 130° loop feeds the air handling units on LL1 to L3. |
| Supplemental Cooling: |
Condenser water is available at 80° in summer and 50° in winter. |
| Energy Efficient Cooling: |
The plate heat exchanger and the outside air fans are used for cooling in the winter months. Variable fan drives were added to the air handling units to further decrease the cost of cooling. |
| Building Management System: |
The current BMS is the Trane Tracer summit system with the Tenant Services Package. |
Electrical System
| Design Capabilities: |
The design is 3.4 watts per square foot for the 277 volts AC and 2.25 watts per square foot for the 120 volts AC. |
| Voltage: |
277/460-volt power for lighting, 120/208 volt three phase power at the panel in each electrical room. |
| Emergency Power: |
There are two (2) diesel generators, a 1075 kW and a 675 kW, for the fire and life safety systems. |
| Metering: |
Capability exists to provide on-floor metering for tenant’s power consumption when their consumption is greater than design. |
Communications
| Telephones: |
Capacity is provided through a base building telephone riser closet. |
| Cable Television: |
Cable service is present in the building and can be accessed by arrangement with the cable supplier. |
| Fiber Optics: |
Verizon Business is the preferred vendor. |
Elevators
| Passenger: |
Type: Otis |
| Low Rise Shuttle: |
Number of Cars: 3
Speed: 700 fpm
Capacity: 3,500 lbs.
Floors Serviced: 3 - 9 |
| Low-Rise: |
Number of Cars: 5
Speed: 800 fpm
Capacity: 3,500 lbs.
Floors Serviced: 10 – 19 |
| Low/Mid Rise: |
Number of Cars: 6
Speed: 800 fpm
Capacity: 3,500 lbs.
Floors Serviced: 20 - 32 |
| High/Mid Rise: |
Number of Cars: 5
Speed: 1000 fpm
Capacity: 3,500 lbs.
Floors Serviced: 33 - 42 |
| High Rise: |
Number of Cars: 5
Speed: 1,200 fpm
Capacity: 3,500 lbs.
Floors Serviced: 43 - 51 |
| High Shuttle: |
Number of Cars: 2
Speed: 350 fpm
Capacity: 3,500 lbs.
Floors Serviced: 51 - 55 |
| Garage Elevators: |
Number of Cars: 2
Speed: 350 fpm
Capacity: Car #1 - 4,000 lbs.
Car #2 – 3,000 lbs.
Floors Serviced: Car #1 - L4 – 2
Car #2 - L4 - 1 |
| Freight Elevators: |
Number of Cars: 2
Capacity: Car #1 - 4,000 lbs.
Car #2 - 3,500 lbs.
Size: Car #1 - 5’ x 8’
Car #2 - 6’ x 5’
Floor Serviced: Car #1 - LL4 - 55
Car #2 - LL1 - 51
Speed: 700 fpm |
Building Security Systems
| Type of System: |
In-house C*Cure 800/8000 System manufactured by Software House. |
| Security Personnel: |
24 hours a day - 365 days a year |
| Closed Circuit Cameras: |
21 cameras monitoring exit and entry points and public areas. |
| Alarms: |
All critical exit/entry points are monitored by alarms. |
| After-hours Access: |
An access card and or ID must be used to enter the building after-hours. |
| Tenant Security System: |
The base building security system can incorporate fully integrated access control and alarm monitoring software packages for the tenant. |
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