Document ID:	ASTM-E424       Scroll down to access document images

Overview

Title:  Sheet Materials, Solar Energy Transmittance and Reflectance (Terrestrial) of Scope:  These test methods cover the measurement of solar energy transmittance and reflectance (Terrestrial) of materials in sheet form. Method A, using a spectrophotometer, is applicable for both transmittance and reflectance and is the referee method. Method B is applicable only for measurement of transmittance using a pyranometer in an enclosure and the sun as the energy source. Specimens for Method A are limited in size by the geometry of the spectrophotometer while Method B requires a specimen 0.61 m\2 (2 ft\2). For the materials studied by the drafting task group, both test methods give essentially equivalent results. Status:  Active Adoption Date:  15-APR-1971         Next Review Due:  30-AUG-2030 FSC/Area:  FACR Doc Category:   American Society for Testing and Materials (ASTM)   Reaffirmation Date:  01-SEP-2020

Responsibilities

Lead Standardization Activity:  YD  Naval Facilities Engineering Command     Adopting Activity: YD  Naval Facilities Engineering Command Coordination:  Full   Army Custodian:  CE   US Army Corps of Engineers   Navy Custodian:  YD   Naval Facilities Engineering Command   Air Force Custodian:  99   Air Force Life Cycle Management Center - Item Reduction Support

Revision History

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