In fast-track design, why might the roofing system be keyed with a generic term like "Roof Membrane"?

• A. It reduces upfront cost
• B. It permits material changes without drawing revisions
• C. It ensures fixed material selection
• D. It simplifies on-site installation

Answer: (B)

In fast-track design, maintaining flexibility to update details as the project evolves is essential. Labeling the roofing system with a generic term like “Roof Membrane” keeps drawings and specs from committing to a specific product early, so substitutions can be made later without triggering redraws or re-approvals. This approach helps keep the schedule intact and allows final material decisions to be coordinated with suppliers and contractors as the project progresses. The other options don’t fit because this practice is about preserving flexibility (not reducing upfront cost or fixing a material) and it doesn’t inherently simplify installation.