📦 ASTM E90 (Sound Transmission Class STC 45-65, Generator/Compressor Enclosures)

Acoustic Sound Enclosure Calculator

Size modular steel sound-attenuating enclosures for noisy outdoor chillers, emergency diesel generators, and industrial air compressors under ASTM E90 & ASTM E413: calculate Sound Transmission Class (STC 45 to 65 reducing equipment noise from 98 dBA down to <60 dBA at property line), ventilation airflow louvers, and acoustic contracting profits.

1. Project & Operating Inputs

Noisy Equipment Enclosures Built (Enclosure Count e.g. 4 Generator Enclosures)

Required Noise Reduction (dBA e.g. 32.0 dBA Insertion Loss Target)

Customer Bid Price for Supplied & Erected Modular Enclosure ($ / Unit)

4" Perforated Steel Panels, Mineral Wool Core, Acoustic Access Doors & Riggers ($)

2. Financial Breakdown & Yield

ASTM E90 ACOUSTIC HOODS

Turnkey Sound Enclosure Project Profit

Industrial Noise Abatement Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost