As MiTek has been hard at work to improve the way the building industry works by increasing the use of offsite components, we have heard from Architects of Record and Engineers of Record that they need more support to be able to specify components. In multifamily construction, there is a high degree of demand for documented fire safety and sound transmission abatement. To support the use of floor trusses, we have hired third-party labs to do fire and sound tests to ASTM standards and to provide reports of those tests that can be used by the specification community to confidently specify both Wood Web and Posi-Strut Web Floor trusses in their projects.
We have added a 1-hour fire-rated assembly that allows a damped ducted system down to a depth of 14”. This shallower depth can reduce the overall cost of the buildings in certain cases compared to the industry standard details that only go down to an 18” depth. We then successfully achieved a 2-hour rated assembly that is often needed in stairwells and other key areas of multi-dwelling structures. Both of these rated assemblies are included in ICC-ES ESL-1388 and can be found in Fire and Acoustic Reports on the MiTek Engineering website.
We then added 10 sound-rated assemblies to cover a range of options to help our customers compete in the multifamily market. All of these reports meet the minimum STC and IIC ratings of 50, which is specified in the IBC and can be found in Fire and Acoustic Reports on the MiTek Engineering website.
As we all work together to increase the Design-Make-Build mindset in the building community, we must make it easy to specify the use of offsite components. These fire and sound tests and resultant reports will help support this effort and will help increase the adoption of floor truss use in multifamily construction.
For additional information, or if you have questions, please contact the MiTek Engineering department.
MiTek Fire and Acoustic Reports
Engineered Wood Flooring on Wood Web Floor Trusses — Shaw Engineered Wood Flooring using Wood Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Carpet with Pad on Wood Web Floor Trusses — Shaw Bethany Place Carpet with a Shaw Carpet Pad using Wood Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Luxury Vinyl Plank on Wood Web Floor Trusses — Shaw Como Luxury Vinyl Plank using Wood Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Stone-Polymer Composite Vinyl Plank on Wood Web Floor Trusses — Shaw VE433–Polaris Plus flooring using Wood Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Carpet with Pad on Concrete over Wood Web Floor Trusses — Shaw Bethany Place Carpet with a Shaw Carpet Pad on Gypsum Concrete using Wood Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Engineered Wood Flooring on Posi-Strut Metal Web Floor Trusses — Shaw Engineered Wood Flooring using Posi-Strut Metal Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Carpet with Pad on Posi-Strut Metal Web Floor Trusses — Shaw Bethany Place Carpet with a Shaw Carpet Pad using Posi-Strut Metal Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Luxury Vinyl Plank on Posi-Strut Metal Web Floor Trusses — Shaw Como Luxury Vinyl Plank using Posi-Strut Metal Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Stone-Polymer Composite Vinyl Plank on Posi-Strut Metal Web Floor Trusses — Shaw VE433–Polaris Plus flooring using Posi-Strut Metal Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Carpet with Pad on Concrete over Posi-Strut Metal Web Floor Trusses — Shaw Bethany Place Carpet with a Shaw Carpet Pad on Gypsum Concrete using Posi-Strut Metal Web Floor Trusses, Fiberglass insulation, and Gypsum Sheathing on Resilient Channels
Fire Rated Assemblies for Wood Web and Posi-Strut Metal Web Wood Trusses — 1-Hr rated assemblies for 10” deep wood web trusses and 9-1/4” deep Posi-Strut metal web trusses, and allows for Ceiling Radiation Dampers on 14” deep trusses; 2-Hr rated assemblies for 11-1/4” deep wood web trusses and 11-1/4” deep Posi-Strut metal web trusses