TEMPE TRANSPORTATION CENTER
CA T PR ION OJ : AR EC TE CH T C MP O E I M TEK MP , AZ UL T LE 40 TI- ON TE ,0 MO ST D SE 00 DA UD 200 EK SQ L IO 8 IN . F TR G T A LE . NSI ED 3 TH PL -ST UB AT O R + IN Y M UM IX ED CE US RT E .
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so l ar shading s k in
bicycl e val et
lo ca l b us s t op s
u n d e r - f l o o r air s u pply
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The Center has been organized to balance efficiency with the best possible work environment. Due to the unique positioning and proportions, the building’s service functions occur within an
expressive core that provides a natural
functions well with LEED Platinum goals. The project incorporates the first climate-appropriate green roof and grey system in Tempe. Every form, material, relationship has more than one purpose or function. The goal was to create a Transportation Center that is a wonderful icon for the community, cost efficient and in harmony with environment.
” CONCEPTUAL SKETCHES
buffer on the west elevation. A simple, flexible floor plate is adjacent to the core, which allows for protected daylight from the south, north and east exposures. This relationship of service and served spaces works on all three levels, creating efficiencies in plumbing, mechanical and circulation. The simplicity of the office configuration is accentuated with an expressive jewel-like form of the community room. Positioned to be seen from Forest and the intersection of Fifth and College, the community room becomes an iconic symbol for the Tempe community. All glazing on both the office/retail and community room are shaded from direct sunlight. This provides an opportunity to create an architecture that expresses its relationship with our specific environment, which also
Primary Structural System:
STEEL FRAME PERSPECTIVE VIEW
Steel Frame Columns + Beams @ 24’ o.c. Floor Joists @ 6’ o.c. Structural Concrete + Steel Composite Deck Floor System By using high strength, sized steel members, the column grid is pushed to the interior edge of the building envelope allowing for a completely open floor plate, and a fully glazed envelope.
Structural Loads: Gravity + Live Loads (Vertical) Direct gravity loads and live loads from occupants are transferred via beam or joist to the columns carrying them to the ground. Seismic + Wind Loads (Lateral)
COMPOSITE CONCRETE STEEL DECK
Resisting torsional racking forces caused by seismic or wind loads is a shear wall in which the steel frame system is attached to. A composite concrete steel deck is also used to provide lateral stability.
STEEL FRAME SYSTEM CMU SHEAR WALL
Primary Foundation System: Reinforced Concrete Footing 18” x 8”, 9’ depth, steel reinforced Reinforced Concrete Retaining Wall 16”, 8’ depth, steel reinforced Given stable soil conditions, and arid temperate climate, the foundation system, is minimal in depth & frost protection. A shallow foundation footing and basement retaining wall are used to accomodate service and equipment basement space.
STRUCTURE + ENCLOSURE INTEGRATION
PHOTO COURTESY, PHXWEBGUY AT FLICKR.COM
Steel Frame + Glass Curtain Wall: Connected Physical Integration Typ. bolted steel plate serves as intermediary Ordered yet Hidden Visual Integration Bolt details are hidden, but both systems have clean and ordered aesthetic
glass curtain wall system
structural steel frame system
E C OR E TH
The Core + Support Bar: 2ND LEVEL FLOOR PLAN REFLECTING TYP. SYSTEMS
MECHANICAL + SERVICE SYSTEMS
FLOOR PLAN BASE IMAGE COURTESY ARKITEKTON
Electrical, Plumbing, + HVAC Equipment The 3 major building service spaces are arranged along a support bar on all 3 levels. Vertical Circulation Stair and Elevator Systems occur away from the Support Bar, placed at the ‘front of house’ for ease of access.
major hvac equipment
restroom plumbing & refuse
VERTICAL SERVICES CORE
TWIN CAVITY (CEILING & FLOOR) AIR DISTRIBUTION SYSTEM
VERTICALLY ALIGNED PLUMBING SERVICES WITHIN ‘CORE’
INTERNAL VERTICAL CIRCULATION STAIR & ELEVATORS
EXTERNAL VERTICAL CIRCULATION STAIR
HVAC AIR HANDLER CEILING CAVITY WARM AIR RETURN
HORIZONTAL SERVICES DISTRIBUTION
WARM AIR SUPPLY DUCTS
RAF CAVITY CONTAINING AIR PLENUM & ELECTRICAL
FRESH AIR SUPPLY DIFFUSERS ZONED ELECTRICAL + DATA DISTRIBUTION OPERABLE WINDOWS FOR PASSIVE COOLING & VENTILATION
Ventilation, Electrical, + Data Systems Integration of structure and interior (finished floor) allow for efficient distribution of air and electrical systems.
DISTANCE OF THERMAL BRIDGE IN WESTERN FACADE
DETAILS : DESIGN INTENTIONS
DISTANCE OF THERMAL BRIDGE IN TYPICAL BLOCK WALL
HAS POTENTIAL TO SELF-SHADE UP TO 71% OF HORIZONTAL SURFACE
Detailing for Efficiencies Arkitekton focuses on function in developing design details. Design logic is based around environmental performance and spatial efficiencies. Systems, like the rotated self-shading CMU above, or raised access flooring with integrated air distribution and electric and data wiring, concern themselves with simplicity and reduced energy usage
RAF ALUMINUM THRESHOLD PLATE MODULAR FINISHED FLOOR PANEL THREADED STEEL STUD LEVELING NUT STEEL PEDESTAL TUBE
STRUCTURAL CONCRETE FLOORING STEEL DECKING STRUCTURAL EXPANSION JOINT
DETAILS : MOVEMENT
STRUCTURAL FLOOR JOIST
Raised Access Floor System Detailing for this system includes self leveling legs, accomodating for changes in floor height. Expansion joints are also considered for structural and interior floor system movements.
INTENSIVE NATIVE VEGETATION
SOIL + PLANTING LAYER FILTER FABRIC (FELT OR OTHER MEDIA) DRAINAGE LAYER, 1” PEA GRAVEL FILTER FABRIC (FELT OR OTHER MEDIA) EXTRUDED POLYSTYRENE INSULATION ROOT BARRIER MEMBRANE FULLY ADHERED WATERPROOFING MEMBRANE
DETAILS : WATER RESISTANCE
STRUCTURAL COMPOSITE DECKING
Green Roof System A multilayered planting system absorbs most of the rainwater that falls on the roof. A fully adhered waterproofing membrane and flashing prevents leakage, and guides excess water to the piping for cistern collection.
DETAILS : 3-WAY INTEGRATION
STRUCTURE - STEEL FRAME ENCLOSURE - LOW-E GLAZED CURTAIN WALL (FROSTED DOUBLE PANE) ENCLOSURE - LOW-E GLAZED CURTAIN WALL (TRANSPARENT DOUBLE PANE) SITE/SERVICES - OPERABLE SHADING DEVICE
Solar Heat Gain + Glare Deterence Integrating structure, enclosure, and site/services, the architect maximized natural daylighting, while minimizing heat gain and glare. Operable shading acts as a second skin or barrier for heat and glare reduction, while allowing for connection to the site + landscape.
BIBLIOGRAPHY + CITATIONS
tempe transportation center, web references: Architekton Studio @ http://architekton.com City of Tempe AZ @ www.tempe.gov Otak Architects @ www.otak.com World Architecture News @ www.worldarchitecturenews.com academic & detail references:
REFERENCES + ATTRIBUTIONS
AIA. Architectural Graphic Standards. 11th Edition. Wiley. New Jersey, 2007. Tate Access Floors. Architectural Details, No. 28 Pedestal Conditions PosiLock Access Floor System. @ www.tateaccessfloors.com building images: Intro, Design Intentions, Mechanical + Service Systems, Bibliography - Images, Diagrams, + Quote Courtesy of Arkitekton Structure + Enclosure - Image Courtesy of Phxwebguy at flickr.com
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