ASTM C 947 (C-947) determines the flexural ultimate strength in bending and the yield strength of glass-fiber reinforced concrete sections by the use of a simple beam of 1.0 in or less in depth using third-point loading. The values of flexural properties obtained using this testing method are useful in quality control, ascertaining compliance, research and development, and product design. TestResources provides machines, grips, equipment, and fixtures for testing in accordance with ASTM C947.