Where is the strength of the concrete typically found for estimating purposes?

The strength of the concrete is typically found in the project specifications because these documents provide detailed information about the materials and standards that must be followed for the construction project. Specifications outline the required concrete strength, often expressed in terms of compressive strength measured in psi (pounds per square inch), and include material characteristics, testing, and quality assurance requirements.

While project drawings might illustrate the location and use of concrete within the design, they do not specify the concrete strength itself. Building codes provide general requirements for safety and performance, but they might not detail the specific mix designs or strengths intended for a particular project. The project schedule focuses on timelines and milestones, rather than material properties. Thus, for accurate estimating and planning related to concrete strength, project specifications are the most relevant source.