Where is the concrete modulus of elasticity found?

The concrete modulus of elasticity is referenced in the American Concrete Institute (ACI) specification, particularly in ACI 318, which provides guidelines for structural concrete design. Within this document, section 19.2.2 specifically outlines the theoretical foundation for determining the modulus of elasticity of concrete, which depends on factors like the concrete's compressive strength and the type of aggregates used.

Understanding the modulus of elasticity is essential because it affects how concrete structures respond to loads, impacting deflections and overall structural behavior. Therefore, engineers rely on the information provided in ACI to accurately calculate and apply the modulus of elasticity in their designs, ensuring safety and compliance with design standards.

While the other choices represent different codes or standards related to structural design and materials, they do not specifically address the concrete modulus of elasticity in the detail or context provided by ACI.