Technical Specifications

Building Data (Shell Building)

Building Type……………………...................................Type I – Fire Resistive Construction, Fully sprinklered

Building Ratings/Certifications……………….....…....Seeking LEED Core & Shell Silver designation. 

Structural System………………………………….…….Post-tensioned girder and reinforced concrete pan joist system

Floor Construction……………….................................Reinforced concrete slab and pan joint system

Roof Construction………………………………………TPO, steel deck. Roofing on rigid insulation.

Design Loads…………………………………………….50 lb/sf live load + 20 lb/sf partition load. Increased floor loading capacity of 125 lb/sf on center bay allowing for filing rooms.

Typical Structural Bay……………………….................30’ x 48’ Typical

Building Exterior…………………..................................Clear/Green tinted low “E” insulated vision glass, clear anodized Aluminum curtain wall system w/ integral exterior sunshades

Windows…………………………………………………..Vision glass from 26 ½” AFF to 7’-6” & 10’-2” AFF at North elevation only, Frosted transom glass from 7’-6” AFF to 10’2” at select areas, Spandrel glass conceals structure 

Curtain Wall…………………………………………...….7” & 9” deep frames, front glazed, anodized aluminum finish

Passenger Elevator size and capacity (2)………….Two 3500 lb. capacity, 8’ cab height, 350 FPM.

Service/freight elevator (1)……………………………One 4500 lb. capacity, 9’-10’ height, 350 FPM.

Security Access Systems……………………………….Card-key systems for building entries and one elevator cab

Provided Core Functions………………………………Drinking fountains, HVAC mechanical rooms, telephone rooms, electrical rooms, ground floor elevator lobby, exit signs at corridors, fire stairwells,       and all fire and life-safety equipment, etc.

Drywall…………………………………………………….Stacked on floor, cost to be subtracted from tenant finish allowance. Tenants use building’s existing drywall stock.

 
Finishes Included Under Shell Building Construction

Ceiling System Public Areas………………………..…2x2 ceiling grid and stacked tiles. Painted drywall in lobby areas

Ceiling System Tenant Space………………………...2x2 Ceiling grid and tiles stacked on the floor

Lobby walls & ceiling…………………………………..Lueders limestone and Wood panelized walls with reveals and Travertine stone base, Painted drywall ceiling

Toilet Room Walls……………………………………….Jerusalem Limestone-honed finish, painted drywall

Toilet Room Countertops……………………….……..Reconstituted glass countertop at lavatories

Window Coverings……………………………………..Mini-blinds stacked on floor or stored off-site

Mechanical System

Cooling Source (Base Concept)……………………..Chilled water provided by Austin Energy district cooling loop

Air Conditioning & Distribution (BC)………………….Two air handling units per floor with chilled water cooling coils, variable speed fans, and variable fresh air intake dampers supply cool, fresh, dehumidified air at a regulated pressure to the primary trunk duct system whenever any tenant zone is occupied or requires cooling.

Outdoor Air Pre-treatment (BC.)……………………..Outdoor air is pretreated in dedicated fresh air pretreatment units. Cooling is provided by chilled water, controlled as necessary to ensure the ventilation air will not impose excess load on the main air-handling units and that ventilation air alone will remove the moisture generated by occupants without allowing indoor humidity to rise above the target level, which is approximately 60ºF dew point, or 60% RH at 75ºF. 

Outdoor air is pre-heated as necessary to a minimum temperature of 45ºF at peak demand (sometimes higher at part load) using modulating gas- fired furnaces.

Terminal Units: ……………………………………………35 (average) separately controlled comfort zones per floor

Terminal Units: Shell……………………………………...The terminal units serving the core and about 4 per floor serving perimeter spaces will be installed as part of the warm shell project.

Terminal Units: Interior Zones……………….................VAV Terminal units regulate flow of primary cooling air to meet zone cooling demands.

Terminal Units: Perimeter Zones……………………....VAV Terminal units with parallel fans and discharge heaters regulate flow of primary cooling air to meet zone cooling demands, but not less than required to meet ventilation requirements.

Ductwork: Shell…………………………………………..Primary medium pressure insulated sheet metal ductwork in place to VAV boxes. Perimeter VAV boxes parallel fan-powered with electric heat.

Ductwork: Tenant……………………………………….Flex Duct from VAV boxes to tenant supplied registers from tenant allowance

Diffusers…………………………………………………....Provided at public common areas. Tenant area diffusers from tenant allowance

Control System…………………………………………...Direct Digital Control (DDC) management system.

Air Quality…………………………………………….…...One roof mounted central station air-handling unit provides pretreated outside air, complying with City of Austin requirements for indoor air quality.

Hot Water……...………………………………………….Domestic hot water heaters for plumbing fixtures within the Tenant’s lease space, if required, from tenant’s allowance.

LEED INFORMATION LEED Core & Shell Silver Designation

Building ownership is pursuing the Leadership in Energy and Environmental Design (LEED) Silver rating from the U.S. Green Building Council for Domain Gateway.

Energy Efficiency through using over 20% less energy than a standard office building by utilizing innovative return-air HVAC systems and strategies, Energy Star compliant roofing, extensive use of sun shading devices, and use of district water cooling.

Water Use Reduction both inside the building and out through the use of existing, established vegetation and native landscaping, irrigation water consumption will be reduced by greater than 50% and indoor water use will be reduced by 40% through the use of low-flow fixtures.

Enhanced Indoor Air Quality will be accomplished via the use of low-VOC paints, sealants, carpets, and building insulation. Construction measures will be taken to prevent residual construction wastes from polluting new HVAC and finishes, also improving the indoor air quality for building occupants. HVAC systems are also designed to provide optimal levels of temperature, humidity, and fresh air to improve occupant comfort and productivity.

Landfill Diversion will be accomplished through recycling and reusing at least 75% of waste generated during construction.

Reduction in Heat Island Effect will be achieved as site surfaces, including the roof top, are designed to reduce heat gain, helping to reduce the ambient temperature in a densely developed area. Additionally, occupants will be provided with ample shaded seating to improve the comfort and quality of the outdoor environment.

Locally Manufactured or Sourced Construction Materials will be used where practical to reduce the energy use associated with shipment of materials, and also to improve the Austin economy by keeping the money local. Additionally, the project will seek to use recycled content materials (such as steel and gas) wherever possible.

• Recycling among tenants will be encouraged through communal recycling collection bins at the location of the dumpsters.
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• Gasoline Consumption and Pollution Reduction will be encouraged not only through the close location of the project to a commuter rail line and multiple bus lines, but also through the inherent mixed-use design of the overall Domain site. Use of high-efficiency vehicles (such as hybrids) by building users will be encouraged through preferred parking spaces in the building’s parking garage.
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• Efficiency Assurance will occur due to commissioning of the building’s HVAC systems during and after construction to ensure that these systems ultimately perform to the efficiency they are designed to achieve.