From this site

One project, every trade

Each calculator adds its lines to a single estimate — consolidated BOM, schedule and cash-flow included.

Open My Project →

Resilient Channel (RC-1) Spacing & Linear Footage Calculator

Calculate the number of rows and total linear footage of resilient channel needed for a decoupled soundproof wall or ceiling.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
8.86 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Total resilient channel needed

196.85 ft

High confidence
Number of channel rows
6

For the dimensions entered, expect a total resilient channel needed of 60 m. Note that channel spacing sits at the high end of the range this calculator was checked against, so treat the output as indicative rather than settled. Set for United States against IRC 2024. The market selector changes both the units and the code cited.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Resilient channel rows = ceil(run height/length ÷ spacing) + 1, installed perpendicular to studs/joists to acoustically decouple the gypsum board layer; total length = rows × the perpendicular run length

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Frequently asked questions

Why is resilient channel installed perpendicular to the studs or joists?
Running the channel perpendicular to the framing decouples the gypsum board from the structure, so the board is only connected through the flexible channel leg rather than rigidly through the studs or joists — this is what reduces sound transmission.
What spacing should I use?
Around 600 mm (24 in) on center is common, but always confirm the spacing against the specific acoustic assembly design or manufacturer's installation instructions you're following, since spacing affects the tested sound rating.
Does the +1 row account for both edges of the run?
Yes — the +1 ensures a channel row falls at both the start and the end of the perpendicular run, not just at each full spacing interval in between.