Buiding Statistics 1
General Building Data
Building Name: Ed Roberts Campus
Location: Berkeley, CA (S.F. Bay Area)
Occupant Names: The Ed Roberts Campus (a nonprofit corporation)
Bay Area Outreach and Recreation Program (BORP)
Center for Accessible Technology (CforAT)
Occupancy/Function Type: Mixed Use - Fully Accessible Community Center
Size: 130,000 sqft
Number of Levels: 2
Primary Project Team:
Owner: The Ed Roberts Campus – http://www.edrobertscampus.org/
Architect: Leddy Maytum Stacy Architects - http://www.lmsarch.com/index.php
General Contractor: Cahill Contractors - http://www.cahill-sf.com/
Engineers: Arup – http://www.arup.com/
Dates of Construction: Completed November, 2010
Actual Cost Information: $36m (quoted on architect’s website)
Project Delivery Method:
Architecture
Design and Functional Components: The Ed Roberts Campus is connected to a BART transportation center and designed well above all requirements set out by the Americans with Disabilities Act. This includes extra-wide 7’ corridors and two-sided elevators for wheelchair access, audio cued landmarks for visually impaired, etc… designed to accommodate all persons with disabilities.
The building houses various services and organizations dedicated to aiding those with disabilities, including career services, fitness centers, computer labs, event spaces, and conference rooms.
Major National Model Code:
Zoning: C-SA (South Area Commercial District)
Historical Requirements: N/A
Sustainability Features
The Ed Roberts Campus features many sustainable design features and, while the ERC did not apply for LEED status, claims to meet requirements for LEED Gold.
The ERC features plentiful daylighting to save on electric lighting, and shading devices that prevent excess heating from that natural light. Natural ventilation allows for the free circulation of fresh air throughout the building, and is essential for maintaining the high Indoor Air Quality standards to which the ERC has committed. Air entering the building also passes through a variety of HEPA filters to achieve the best possible air quality. For conventional heating and cooling, the ERC employs the combination of a hydronic radiant floor heating system and a 100% Outdoor Air system (with VAV terminals) for both heating and cooling. To reduce costs from external energy, the ERC also uses rooftop photovoltaic panels to meet a portion of its electricity needs.
Throughout the ERC there is a strong emphasis on recycled materials, including recycled carpeting and bathroom floors. All materials were chosen to meet LEED Air Quality standards as well, with special attention towards building occupants with Multiple Chemical Sensitivities.
Building Facades
Building Statistics 2
Mechanical Systems
The primary air system for the ERC is comprised of five air handling units that each provide 100% Outdoor Air to the building. AHU-1, 3, and 4 are constant volume DOAS units that provide 7,800, 3.500, and 6,000 cfm of airflow, respectively. These units primarily work to condition office spaces. AHU-2 and AHU-5 are VAV DOAS units with airflow rates of 5,500 and 5,000 cfm, and work to serve the lobby and covered courtyard areas, but only provide ventilation airflow to those spaces. A radiant floor system meets the heating and cooling loads in the occupied zone of the double height lobby and courtyard spaces. The three zones of radiant floor provide 27, 30, and 58 MBH of cooling and 18, 20, and 30 MBH of heating. The air-side system does not make use of economizers or any return air - instead, all air is exhausted through nine exhaust fans to the outside. Exhaust Fans 1, 3, 4, 5, and 7 are synced with the five air-handling units and exhaust air from their respective zones. Exhaust Fan 6 removes 72,000 cfm of air from the garage, while the remaining three exhaust from the restrooms, garbage, and elevator rooms. The five AHUs primarily provide dehumidification and initial cooling/heating for the untreated air, while zone-specific water source heat pumps cover most of the sensible heat load for the building. There are a total of 55 WSHP units in the building, each serving one specific zone, and vary in sizes that provide cooling capacities ranging from 7,000-40,000 Btu/h and heating capacities from 9,000-45,000 Btu/h. Cold water for the various mechanical equipment is provided by two rooftop cooling towers, while hot water is provided through three gas-fired heat exchangers.
Electrical Systems
The service to the building enters from a PG&E connection at 480/277V 3-phase, which is routed to 9 basement panel boards with high ampere-ratings (typ. 225-400A), with three connections left for future rented lease spaces. Basement panels that will serve the occupied spaces above are split, via transformer, into high and low voltage panels. Typically, each space in the building is served through panel boards which provide high (480/277V) or low (208/120V) voltage service for the demands in each lease space. Two 400A lines run to the two high voltage panel boards that serve the rooftop equipment.
Lighting Systems
In California, Title 24 energy codes have strict requirements for lighting control measures in buildings. The Ed Roberts Campus has 48, 503 Watts of installed lighting in conditioned spaces and 9,260 Watts in unconditioned spaces. Per requirements, every interior lighting system has an automatic shut-off control system (such as an occupancy sensor or automatic time switch) as well as a manual override for that control system in visible range from the lamp itself. All fluorescent fixtures are either tandem wired with dual ballasts, or equipped with electronic high-frequency ballasts. All rooms with windows or skylights (greater than 250 sqft of window area) must be wired so that 50% of the lamps in the area are controlled by a separate switch for daylight control. With the exception of two types of amiable gallery spotlights, which run on 120 V, all lighting fixtures run on 277 V and are wired through high voltage panel boards discussed in the electrical section.
Structural Systems
The ERC uses a combination system of cast-in-place concrete and steel framing for its structure. The building sits atop an existing subway station and a basement parking garage, both of which are concrete structures. Concrete footings, foundation walls, and poured slab-on-grade support the single-level parking garage. The foundation footings, slab-on-grade, columns, first floor slab, and second floor slab are all poured normal-weight (150 pcf) concrete with f’c = 4000 psi. The first floor slab is supported by concrete columns, which in some cases are steel columns housed within poured concrete columns. The first floor is a 12” two-way concrete slab supported by concrete beams ranging in size from 12” Deep X 12” Wide to as large as 44” Deep X 72” Wide. Throughout the building plan there are shear walls that are diagonally braced with steel beams. On the first floor, the concrete beams underneath these shear walls are reinforced with steel beams to complete the braced frame and are almost all W8x48 beams below slab level. The two exceptions are the two main E/W shear walls which are reinforced with W18x143 in the slab below. Above the first floor slab level is a completely steel frame structure. The second floor slab is a one-way concrete on metal decking. There are four types of metal decking used in the building. All decking is 18-guage steel with 3-1/4” thick concrete slab above the top flute. These deck slabs are all reinforced with #4 @12” O.C. rebar in each direction. The roof level matches the slab on metal decking construction as the floor below, with the addition of lightweight concrete pads that support the mechanical equipment on the roof.
Plumbing Systems
The plumbing system in the ERC is designed under the 2001 California Plumbing Code, California Building Code, and National Fire Protection Code. As domestic water enters the building, there is an existing pressure of 70 psi at the water main. A maximum allowable piping friction pressure loss of 20 psi and a total developed length of 750 ft means that the maximum pressure drop for any piping in the building due to friction must be 2.6 psi/100 ft. Hot water demand for the building is met by four electronic instantaneous water heaters, with temperature increases of 57o, 47o, 36o, and 65o F at 0.5 gpm, that provide water to public restrooms and kitchens. The maximum design hot water temperature is 110oF. In addition, one 30 gal electric water heater provides hot water for the janitors’ use.
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News Feed
4/22/2015 - CPEP Completed
4/22/2015 - CPEP Reflection Posted
4/22/2015 - ABET Assessment Posted
4/21/2015 - Final Presentation Posted
4/21/2015 - Final Report Posted
3/30/2015 - Presentation Outline Posted
1/19/2015 - Proposal Updated and Posted
12/12/2014 - Proposal Posted
11/11/2014 - Tech Report 3 Posted
10/21/2014 - Building Statistics 2 Posted
10/20/2014 - Abstract Posted
10/06/2014 - Tech Report 2 Posted
10/06/2014 - Tech Report 1 Posted
09/16/2014 - Building Statistics 1 Posted
09/15/2014 - CPEP Full Functionality
09/08/2014 - CPEP Home Page Draft
09/02/2014 - CPEP Seminar
09/01/2014 - Project Initiation Forms
08/26/2014 - Personal Thank You Sent
08/25/2014 - Documents Received
07/24/2014 - Owner Permission Obtained
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