ASTM C1224-15(R2020) pdf download

ASTM C1224-15(R2020) pdf download

1.1 This specification covers the general requirements and physical properties of reflective insulations for use in building applications. These insulation materials consist of one or more low emittance surfaces, such as metallic foil or metallic deposits, unmounted or mounted on substrates. Reflective insulations derive thermal performance from surfaces with an emittance of 0.1 or less, […]

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ASTM C857-19 pdf download

ASTM C857-19 pdf download

1.1 This practice describes the minimum live loads and dead loads to be applied when designing monolithic or sectional precast concrete utility structures. Concrete pipe, box culverts,and material covered in Specification C478 are excluded from this practice. NOTE 1- For additional information see AASHTO Standard Specifica-tion for Highway Bridges, Seventeenth Edition. NOTE 2- -The purchaser

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ASTM C848-88(R2020) pdf download

ASTM C848-88(R2020) pdf download

1.1 This test method covers the determination of the elastic properties of ceramic whiteware materials. Specimens of these materials possess specific mechanical resonance frequencies which are defined by the elastic moduli, density, and geometry of the test specimen. Therefore the elastic properties of a material can be computed if the geometry, density, and me-chanical resonance

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