Sample data from Engineering Database — 375 reference tables, deterministic calculators, and Engineering AI. Sign up free
Sound Absorption: wood tongue groove roof
Sound absorption coefficients and NRC ratings for building materials — fiberglass, carpet, concrete, drapery, ceiling tile, etc. per ASTM C423 and ASHRAE Ch.49
| material | product variant | alpha 1000 (dimensionless) | alpha 125 (dimensionless) | alpha 2000 (dimensionless) | alpha 250 (dimensionless) | alpha 4000 (dimensionless) | alpha 500 (dimensionless) | category | description | mounting | nrc (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| wood tongue groove roof | deck | 0.08 | 0.24 | 0.13 | 0.19 | 0.1 | 0.14 | construction | Wood tongue-and-groove roof decking | Surface | 0.14 |
What else is in Engineering Database
Iron Engine ↗Engineering AI at ironengine.ai
AI built for engineering. Searches the engineering database, performs calculations, gives source-backed engineering insights.
Get started for free ↗Reference Data375 engineering tablesMaterial properties, pipe and shape dimensions, code tables, and electrical ratings across mechanical, civil, chemical, electrical, materials, and manufacturing engineering.
Browse dataCalculatorsDeterministic engineering calculatorsSizing, checking, and conversion tools that run against the reference tables. Inputs are code-compliant, outputs are traceable to the source standard.
Browse calculatorsRelated data
acoustic panel fabric wrapped2 rowsbrick painted1 rowbrick unglazed1 rowcarpet on concrete1 rowcarpet on foam pad1 rowceiling tile fiberglass high nrc1 rowceiling tile mineral fiber high nrc1 rowceiling tile mineral fiber standard1 rowconcrete block coarse1 rowconcrete block painted1 rowconcrete poured painted1 rowconcrete poured unpainted1 row