What must be true about used materials in construction?

Used materials in construction must meet current specifications and be approved by the building official to ensure safety, performance, and compliance with building codes. This requirement is crucial because used materials may not have the same integrity or performance characteristics as new materials, and their history of use might affect their reliability in a new application. Ensuring that they meet current specifications helps maintain the overall safety of the structure and guarantees that they will function as intended.

This approval process often involves an assessment of the material's condition, suitability for reuse, and confirmation that it complies with the local building codes and regulations. By requiring inspection and approval by the building official, the safety of the construction is upheld, minimizing the risks associated with potentially compromised or inappropriate materials.