RC-1, hat channel, sound isolation clips, acoustical sealant and the STC-rated assemblies they build - quantified per wall and ceiling type, because sound control is a system, not an accessory.
On one recent multi-family project, our takeoff carried 509,676 LF of 22GA RC-1 resilient channel - more linear footage than any single stud size on the job. Sound control at that scale is a major cost center, and it hides in the assembly notes: which ceilings get channel, at what spacing, single or double layer board over it, sealant at the perimeter or not. We pull it out of the assemblies and put it on its own lines.
Resilient channel doesn't appear on the floor plan - it lives in the wall and ceiling type details, sometimes only in the spec section. Estimators working from square footage never see it. Ours work from the assemblies: every partition and ceiling type is opened up, and everything inside it - channel, clips, batts, sealant - lands in the takeoff with the assembly it belongs to.
Multi-family and hotel drywall subs, where STC ratings drive the whole interior package. GCs leveling bids who need to know which sub actually carried the channel. Developers verifying that value-engineering the sound package won't come back as tenant complaints. Delivered in 24 to 48 hours standard, Excel, PDF or CSV.
On sound-rated multi-family work it can be one of the largest single line items in the framing package - plus the labor of hanging board on channel, which runs slower than direct-to-stud. Missing it is not survivable on a thin-margin bid.
Yes. Spacing comes from the listed assembly, typically 16" or 24" on center, and we quantify to what the listing requires - flagging drawings that contradict it.
Yes - clip-and-channel systems, isolation hangers and perimeter isolation strips are counted per manufacturer spacing where the documents specify them.
Standard delivery in 24-48 hours, rush available. Free revisions within 48 hours on every project.
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