🧱 ASTM E90 (STC 50-60 Rated Partition Walls, Resilient Channels & Acoustic Batts)

Demising Wall Sound Transmission Class Calculator

Design high-performance sound-rated demising partitions and party walls between commercial tenant spaces under ASTM E90 & IBC Section 1206: calculate Sound Transmission Class (achieving STC 50 to 60 using double 5/8" Type X drywall, resilient sound isolation clips/channels, fiberglass acoustic batts, and viscoelastic damping compound), and drywall contractor profits.

1. Project & Operating Inputs

Sound Partition Wall Area (Square Feet e.g. 14,000 Sq Ft Demising Walls)

Target Sound Transmission Rating (STC Rating e.g. STC 55 Acoustic Spec)

Customer Bid Price for Supplied & Finished STC Partition ($ / Sq Ft)

5/8" Type X Drywall, RC-1 Resilient Channel, Mineral Wool Batts & Labor ($)

2. Financial Breakdown & Yield

ASTM E90 STC 50-60 DEMISING WALLS

Turnkey STC Partition Contract Profit

Acoustic Drywall Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost