Reuter Walton Commercial QAQC Acoustics

Information

1.0 PARTITION CONSTRUCTION

Stud spacing is installed per contract documents
Double stud rows are independent of each other. IE: clear air space exists between opposing rows of studs. No framing, blocking, trade materials shall cross the air space.
Fire/draft stopping is installed (where required) and is an approved flexible material such as mineral wool.
Batt insulation is installed within each stud cavity in accordance with project documents.
Installation of the correct number of layers of gypsum board, and on the correct side of the partition.
Maintain a 1/4' - 3/8" gap around the full perimeter of the partition. Fill gap with acoustical sealant. Gaps that exceed 3/8" shall be lapped with gypsum board.
At intersections between double-stud partitions and corridor or exterior walls, finish materials on unit side of exterior/corridor wall is continuous past double-stud partition. Airspace between studs is maintained at the intersection.
Metal Studs: Stud space and gauging is per project documents

Stud spacing is in accordance with project documents.
Metal studs: stud gauge is per project documents.
Batt insulation installed within each stud cavity is in accordance with project documents
Installation of the correct number of layers of gypsum board, and on the correct side of the partition.
Maintain a 1/4' - 3/8" gap around the full perimeter of the partition. Fill gap with acoustical sealant. Gaps that exceed 3/8" shall be lapped with gypsum board.
At intersections between partitions, finish materials shall not be continuous past the intersection for either partition.

Resilient channel is ClarkDietrich RCSD (no substitutions).
Resilient channel is with the flange open upwards (screw installed on the bottom)
Channel is installed directly on studs. (channel is not sandwiched between layers of shear and/or gypsum board.
A1/4" - 3/8" gap is maintained between channel and surrounding construction at floor/ceiling, wall intersections etc.
Gypsum board supported from channels is not rigidly attached to the structure.
Any blocking/backing on walls to receive channel has sheet metal installed to the channels.
Resilient channel is installed per project documents and no less than 24" on center.
All screws attaching resilient sound channel to studs are installed in predrilled holes. (all other screws to be removed)
Different colored screws are used where gypsum board is attached to channels.

Joist/Truss spacing is installed per project documents.
Subfloor is glued and screwed in place per project documents.
The correct number of layers and type of gypsum board is installed per project documents.
Batt insulation is installed in cavities per project documents.

Resilient channel is ClarkDietrich RCSD (no substitutions).
All channels are installed in the same direction in the room.
Channel is installed directly to joist/truss and is not sandwiched in the assembly.
A 1/4" - 3/8" gap between channels and surrounding construction intersections is maintained.
Gypsum board supported from channels shall not have any rigid attachments to structure.
Different colored screws are used where gypsum board is attached to channels.
Any blocking/backing on walls to receive channel has sheet metal installed to the channels.
All screws attaching resilient sound channel to studs are installed in predrilled holes. (all other screws to be removed).
Channels are installed with proper spacing per project documents and UL listings.

It has been verified that gypsum concrete meets project specifications per slump and brass cube tests.
No mechanical fasteners have been installed in areas to receive gypcrete/concrete pour.
Perimeter isolation is installed and continuous at all vertical obstructions
Where perimeter isolation is not used, matting edges are taped to prevent gypcrete/concrete seepage.
Gypcrete/Concrete pour is careful to prevent accidental overpour that could lead to short circuiting of the matting.
No mechanical fasteners that penetrate the sound mat reach the subfloor
Flooring is installed in accordance with manufacturer's instructions. Carpet is installed over pad.
Maintain 1/8" gap between top of hard-surface flooring and baseboard.
Tile grout and flooring adhesives is not in contact with surrounding walls and/or cabinets.

Where soffits are installed at a ceiling with a resilient attachment, soffit framing shall attach to either the ceiling or the wall, not both. If attached to ceiling, support shall be from the resilient element (channel); there shall be no support from ceiling joists/trusses. Maintain a gap between soffit gypsum board and surrounding construction. Fill gaps with acoustical sealant.

Verify no trades are installed within or cross the airspace in a double-stud or furred wall.
Verify electrical boxes are installed with outlet box pads, where required.
Verify outlet box pads fully wrap the box, closing all open knock-outs, penetrations for electrical cabling, etc.
Verify outlet boxes are sealed to the gypsum board with acoustical sealant such that light cannot pass through the penetration or box.
Observe HVAC unit operation after complete installation to verify there is no unwanted rattle or excess noise.
Observe the plumbing and HVAC piping routing through the unit and installation for vibration isolators as specified and clearance at penetrations.
Verify there is no incidental contact between vibration-isolating piping and building structure, framing, gypsum board, etc.
Verify mechanical, electrical, and plumbing equipment is installed and vibration-isolated in accordance with project documents.
Avoid incidental contact between metal ductwork and elements that may rattle.
Verify equipment vibration isolation is fully adjusted after systems are filled/energized and functioning properly.

Verify trash chutes are installed on vibration isolators and that trash chute and frame are free from structure.
Verify trash chute has damping compound applied on the outside of the chute.
Verify door closers and quiet latching mechanisms are installed and adjusted properly.
Verify elevator machinery is installed and vibration isolated in accordance with manufacturer instructions and project documents.

Verify any specialty systems are installed in accordance with manufacturer's instructions. (IE: outdoor deck isolation, fitness room mitigation, impact isolation etc.)
Verify parking control systems are operating properly to avoid unwanted noise transmission into occupied areas.

Verify acoustical seals are installed around full perimeter of unit entry doors, HVAC closets, and as otherwise specified in project documents.
Any deficiencies noted in the checklist are noted, they will be repaired and photographed for future reference.
Any gaps/holes in acoustically rated assemblies shall be filled with acoustical sealant (Up to 3/8" size) or lapped with gypsum board, then filled with acoustical sealant.
Verify screw spacing is in accordance with UL listing.
Verify installed exterior windows/doors meet project requirements.
Trim shall not compromise effectiveness of resilient channels, matting, etc. Maintain a gap between floor or ceiling and all trim pieces.
A minimum of 5 photos will be submitted with this audit.