7272 WISCONSIN AVE

Overview

The 7272 Wisconsin Ave project is a mixed use building located in Bethesda, Maryland. The building consists of an office tower with ground floor retail.  Parking will be provided in a garage with both below and above grade levels of parking. The project is designed to LEED for Core and Shell v2009.

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Sustainable Sites

Site is located in a densely developed area with access to numerous community services. Transit access is a unique feature of the building since a new Metro Rail station is being built in the project’s adjacent plaza which will be integral to the overall site. Open space, including landscaped area and pedestrian hardscape, is 47% of the total site area.  Open space includes pedestrian areas, green roof and other vegetated areas.  

The stormwater management plan, which combines both green roof, and onsite bioretention, results in a 37% reduction in post-development runoff for the 2-yr 24 hr storm.

 

Water Efficiency
Landscaping is irrigated with a drip irrigation system, which helps to reduce water use by 55% compared to the LEED baseline.  Green roof areas aren’t irrigated.

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Plumbing fixture flow rates result in 36% water savings compared to the LEED baseline. This is achieved with the below flow rates.

  • Lav faucets: 0.1 gpc sensor operated faucets

  • Toilets: 1.28 gpf 

  • Urinals: 0.125 gpf

  • Showerheads: 1.5 gpm

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The above fixture flow rates result in approximately 1,012,652 gallons of anticipated water savings per year.

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Energy Performance

The project’s energy model demonstrated 8.8% in energy cost savings compared to the ASHRAE 90.1-2010 baseline. Savings are due to the following energy efficiency measures:

  • Efficient lighting design in parking garage is 0.10 W/sf.

  • Lighting design for office core areas is 0.33 W/sf.

  • Variable speed pumps (primary and secondary CHW loops); differential pressure reset for secondary loop pumps

  • Frictionless VFD centrifugal chillers with 0.26-0.4 NPLV which represents a 30% better part-load performance over the baseline

  • Efficient dedicated outside air (DOAS) units with energy recovery

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Materials and Resources

  • Construction waste recycling resulted in 94% of construction waste either recycled or otherwise diverted from disposal. The project recycled or diverted 8,942 tons of construction material.

  • Recycled content materials total over 20% of materials, by cost.

  • Regional content materials constitute over 50% of all materials, by cost.

  • Forest Stewardship Council (FSC) certified wood products were installed for all doors, architectural woodwork and rough carpentry.  

  • A total of 41% of wood materials (by cost) installed in the building are FSC certified wood products.

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Indoor Environment

  • The project implemented a Construction IAQ Management Plan during construction. Absorptive materials were wrapped to prevent moisture damage during construction.

  • Low VOC paints, coatings, adhesives, sealants and flooring were installed during construction.

  • Composite wood products contain no added urea formaldehyde.

  • MERV 13 filters have been specified for DOAS units serving the building.

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