Page 375 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

336 Cha pte r Ei g h t

Exemplary Performance Point Availability Exemplary Performance Point Criterion Standards/Codes Submittals Comments Variables/Concepts

Credit

WEp1: Water Use Reduction Options Criterion
n.a.
Required
WEc1: Water Efficient
No
Landscaping
WEc2: Innovative Wastewater
Yes 100%
Technologies
WEc3: Water Use Reduction Yes 45%

TABLE 8.2.3 WE Credit Summary Table Study Guide—LEED 2009

• Transportation
• Installation
• Operation and maintenance
• Recycling and waste management
Various impacts are evaluated in the BEES model, and initially the main environmental
items included were GWP, acid-rain impact, nitrification potential, natural resource
depletion, solid waste impact, and indoor air quality considerations. As the model
developed, additional factors were added. The various subcategories evaluated in
version 4 are listed in Table 8.3.1.
Other decision tools for choosing sustainable materials and products are being
developed by many organizations, both public and private. As the movement
evolves, these will become more readily accessible and inclusive. Even trade
organizations are developing sustainable design manuals and guides for their
product and services customers. An example is the National Ready Mixed Concrete
Association (NRMCA) which has published a guide to LEED-NC with respect to
concrete applications. It is a good idea to ask the various trade organizations
representing the building materials that one uses if they can supply you with their
current updated sustainability guide.

Incorporation into CSI Formats
There has been much interest into how best to incorporate sustainable construction into
the established building process methods in the United States. Even though there may