developing a database for measuring the performance of urban design alternatives

Developing a Database for Measuring the Performance of Urban Design Alternatives

2011 TRB Annual Conference

January 25, 2011

Washington, DC

Landscape Performance SeriesSlide 2

Landscape Architecture Foundation

501(c)(3) nonprofit based in Washington, DC

Founded in 1966 to preserve, improve and enhance the environment

Increase our collective capacity through: Research – Invested nearly

$600,000 since 1986 Scholarship – Awarded

over $775,000 to 450 students since 1986

FIT Workshop11/16/10, Slide 3

Landscape Performance

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Performance

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A Case Study Comparison

Reduces water use by 30% compared to a building with standard code-compliant fixtures

Uses 51,300 kBtu/ft2 of energy annually, a 39% reduction from base case

Reduces carbon emissions by 19 lbs CO2/ft2, or 50% by purchasing renewable energy.

Provides daylight for 75% of regularly occupied spaces and views for 90% of occupied work areas

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A Case Study Comparison

Stormwater planters

10 new trees

Native and adapted plants

Permeable pavers

5 new seating areas

Local stone

FSC-certified wood

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A Case Study Comparison

Captures and cleans stormwater runoff

Reduces the urban heat island effect

Sequesters carbon

Reduces potable water use

Cleans the air

Increases social value of space

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From Features to Claims to Benefits

Reduces stormwater runoffCaptures and infiltrates 30% of all rain falling on the site.

Sequesters carbonTraps 1,500 lbs of carbon annually in tree biomass.

Increases social value of spaceIncreased café patronage by 30% on weekdays and 50% on weekends.

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Landscape Performance Series

Case Study Briefs

Benefits Toolkit

Factoid Library

Scholarly Works

An online interactive set of resources that provides tools and information to quantify benefits, show value, and make the case for sustainable landscape solutions.

www.lafoundation.org/lps

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Landscape Performance Series

a collection of resources designed to make “landscape performance” as well

understood as “building performance” NOT a rating system focused on built, performing projects generating demand for sustainable landscape solutions a resource that will grow over time and with your

participation Not just for Landscape Architects

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FIT Workshop11/16/10, Slide 18

Factoid Library

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Benefits Toolkit

From National Tree Benefit Calculator, by USDA Forest Service and Casey Trees

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Quantifying Benefits

Determine from design parameters Stormwater modeling, area calculations, etc. Rating system submittals (LEED, SITES)

Gather additional information Use public information (property tax, GIS data) Contact other project stakeholders

Estimate using rules of thumb Use online calculators and tools Obtain actual measurements/monitoring data Combine Methods

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Landscape Performance Series

Case Study Briefs

Benefits Toolkit

Factoid Library

Scholarly Works

www.lafoundation.org/lps

Thank you to ourLandscape PerformanceSeries Sponsors:

Founding Partner Annual Sponsor

Special Commitment

The CLASS Fund/Ralph Hudson Environmental

Fellowship

AILA/Yamagami/Hope Fellowship

Barbara DeutschExecutive Directorbdeutsch@lafoundation.org202-331-7070 x12