We have a surfaces that we need to get SRI values from a lab.
The user's guide mentions the ASTM E 1980 to determining SRI.
Reflectance could be determined using ASTM E 903, ASTM E 1918, ASTM C 1549 and Emittance is measured according ASTM E 408 or ASTM C 1371.
Now, the lab that is giving us the quote is saying that they will obtain the SRI values using the equation 3 from the ASTM E 1980 - 01 through calorimetrc method. Reflectance and emittance will NOT be measured according ASTM E 903, ASTM E 1918, ASTM C 1549, ASTM E 408, y ASTM C 1371. Is this an OK path for getting the SRI? or emittance and reflectance are a must in order to get the SRI value?
I should mention this project is in Argentina.
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Tristan Roberts
RepresentativeVermont House of Representatives
LEEDuser Expert
11474 thumbs up
May 20, 2010 - 2:55 am
To document this credit, LEED Online requires you to upload SRI documentation AND/OR emissivity and reflectance percentages) for each material. You will also have to enter material data, and you can enter SRI, and again, you have the choice of entering the emissivity and reflectance data. The LEED Online form does a quick calculation to come up with its own SRI value.In short, you should be fine getting an SRI value and entering that. You don't also need the other values.