Rating System

LEED BD+C: New Construction

Rating System Version

v2 - LEED 2.2

Inquiry

The Client\'s building program dictated large areas (greater than 30%) of surface parking. The geotechnical report dictated that the pavement material be concrete. The current LEED Reference Package references ASTM E903-96 as the standard for measuring reflectivity/albedo of surfaces. An article on the American Concrete Pavement Association website (one of the listed resources in the LEED Reference Package) recommends using ASTM C1549 as the standard for measuring the reflectivity/albedo of pavement. The web page address for the referenced fatq article is http://www.pavement.com/PavTech/Tech/FATQ/fatq-albedo-reflectance.html. The testing lab that conducted the reflectivity testing for our project has the following accreditations: IAS-ES TL-189, State of Florida TST 1556, Metro-Dade 01-0727.03, and CRRC. Test results on two concrete pavement samples with different mix designs ranged from 0.347 to 0.409. Standard deviation ranged from .004 to .009. One mix design contained fly ash. Will the USGBC accept test results based upon ASTM C1549 as proof that non-roof impervious surface areas have been constructed with high-albedo materials?