What specific acoustic performance analysis documents are required for verifying aluminum ceiling systems in commercial buildings?

Acoustic documentation must enable consultants to model and verify interior acoustic performance precisely. Deliverables should include: (a) Laboratory-tested sound absorption coefficients (αw) and octave-band absorption values measured per ISO 354 or ASTM C423; (b) Sound Transmission Class (STC) and Ceiling Attenuation Class (CAC) test reports per ASTM E90 / ASTM E413 where ceiling assemblies are part of inter-room partitions; (c) Reverberation time (RT60) simulation reports demonstrating expected RT for representative room volumes, showing assumptions (room geometry, finishes, occupancy); (d) Measured or modeled Speech Transmission Index (STI) or Articulation Index (AI) where speech intelligibility is critical; (e) Test reports for specific perforation patterns, backing materials, and cavity depths with full test conditions and sample drawings; (f) On-site measurement protocols and acceptance criteria (e.g., measurement positions, instrumentation, calibration certificates); (g) Third-party laboratory accreditation (ISO/IEC 17025) statements and test certificate numbers; (h) BIM objects with acoustic metadata (absorption coefficients by frequency band) to allow acoustic simulation in room-acoustic software; (i) Installation guidance to avoid performance loss (sealed perimeter, recommended cavity depth, backing attachment). Provide all documents in PDF, reference test standards, and include contactable lab certificates and specimen photos so acoustic consultants can validate and integrate results into project modelling.