Fire and Sound Detailing for Wood Frame Construction

Presented by Jon Hall AIANovember 14, 2018

Disclaimer: This presentation was developed by a third party and is not funded by WoodWorks or the Softwood Lumber Board.

“The Wood Products Council” is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES), Provider #G516.

Credit(s) earned on completion of this course will be reported to AIA CES for AIA members. Certificates of Completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product.

______________________________Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

• Growing interest in mid-rise Type III and Type V projects has led to a focus on cost-effective and buildable detailing strategies that align with code requirements for fire and life safety, acoustical separation and structural performance. Presented by an architect who has designed many multi-family and mixed-use mid-rise projects, this webinar goes beyond code provisions and focuses on the “how-to” associated with designing and detailing these wood-frame buildings. Architectural design and detailing topics specific to fire and life safety and acoustics will be reviewed at length, including floor-to-wall details, shaft walls, fire walls, and the intersection of two rated assemblies in four- to six-story, Type III and Type V wood structures.

Course Description

Learning Objectives

1. Explore code provisions, requirements, and practical design solutions related to fire and life safety in mid-rise wood-frame buildings.

2. Discuss assembly options and selection criteria for shaft walls, fire walls, and unit separation walls in mid-rise wood-frame projects.

3. Highlight unique code considerations associated with floor-to-wall intersection details in Type III and Type V projects, and share resources to aid in selecting a solution.

4. Examine details used on recent Type III and Type V mid-rise projects related to fire and life safety, and discuss rationales for approval.

Wood Frame Construction• Wood Stud Walls• Truss or I-Joist Floor and Roof• Plywood Sheathed Walls and

Floors

Group R-2 ConstructionApartments & Condominiums• 1 Hour Demising Walls• 1 Corridor Walls• 2 Hour Fire Walls• 2 Hour Shaft Walls

Podium ConstructionIBC 510.2• Type 1A Below Podium• 3 Hour Horizontal Separation• Separate Building Above Podium

for Stories & Area• Height Measured from Grade

Plane

Podium Construction

Type VA ConstructionIBC 504• 4 Stories & 70 feet of R-2• 5 Stories in WA State

Type VA ConstructionIBC Table 601• 1 Hour Bearing Walls• 1 Hour Floors• 1 Hour Roof Construction

Type IIIA ConstructionIBC 504• 5 Stories & 85 feet of R-2• 5 Stories in WA State

Type IIIA ConstructionIBC Table 601• 2 Hour Exterior Bearing Walls• 1 Hour Interior Bearing Walls• 1 Hour Floors• 1 Hour Roof Construction• Exterior Wall Framing of Non-

Combustible / Fire Retardant Treated Materials

Wood Frame Detailing – Exterior Walls

Wall to Floor – Type VA

• 1 Hour Rated Floor• 1 Hour Rated Wall• Rated from Inside Only

Wall to Floor – Type VA

• 1 Hour Rated Floor• 1 Hour Rated Wall• Rated from Both Sides

Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor• 2 Hour Rated Wall• Fire Retardant Treated• Rated from Both Sides

• 1 Hour Rated Floor• 2 Hour Rated Wall• Fire Retardant Treated

o Wall Framingo Wall Sheathing

• Rated from Both Sides

Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor• 2 Hour Rated Wall• Fire Retardant Treated

o Wall Framingo Wall Sheathingo Rim Beam

• Rated from Both Sides

Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor• 2 Hour Rated Wall• Fire Retardant Treated

o Wall Framingo Wall Sheathingo Rim Beamo Floor Joists for at least 10’ &

individually wrapped with GWB

• Rated from Both Sides

Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor

• 2 Hour Rated Wall

• Fire Retardant Treated

o Wall Framing

o Wall Sheathing

• Rated from Both Sides• https://awc.org/pdf/codes-standards/publications/dca/AWC-

DCA3-FRR-Assemblies-1802.pdf

Bearing Wall to Floor – Type IIIA

Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor• 2 Hour Rated Wall• Fire Retardant Treated• Rated from Both Sides

• 1 Hour Rated Floor• 2 Hour Rated Non-Bearing Wall• Fire Retardant Treated• Fire Coated Plywood

Bearing Wall to Floor – Type IIIA

Type IIIA – Bearing Walls

Non-Bearing Wall to Floor – Type IIIA

• 1 Hour Rated Floor• 1 Hour Rated Non-Bearing Wall• Fire Retardant Treated

Wood Frame Detailing – Interior Walls

Interior Wall to Floor

• 1 Hour Rated Floor• 1 Hour Rated Wall

Interior Demising Wall to Floor

• 1 Hour Rated Floor• 1 Hour Rated Demising Wall• Fire Blocking Required

Interior Wall to Floor

• 1 Hour Rated Flooro Parallel Framing

• 2 Hour Rated Wall

Interior Wall to Floor

• 1 Hour Rated Flooro Perpendicular Framing

• 2 Hour Rated Wall• Fire Coated Plywood

Interior Wall to Wall

• 1 Hour Rated Wall• 2 Hour Rated Wall

Interior Wall to 2 Hour Floor

• 2 Hour Rated Floor• 1 Hour Rated Wall - NLB

Interior Wall to 2 Hour Floor

• 2 Hour Rated Floor• 2 Hour Rated Wall – Load Bearing

Wood Frame Detailing – Corridors

Corridor Wall

• 1 Hour Rated• Load Bearing• GA File No WP 3242• STC 50 min

Corridor Wall• 1 Hour Rated• Load Bearing• Shear Wall• GA File No WP 3242 (For fire only)• NOT STC 50 min

Corridor Wall

• 1 Hour Rated• Load Bearing• Shear Wall• Sound Board• NGC 2011058

o (For acoustics)• STC 50 min

Corridor Wall

• 1 Hour Rated• Load Bearing• Shear Wall• Staggered Stud• STC 50 min• GA File No 3910

o (For acoustics)

Corridor Wall

Corridor Wall

• 1 Hour Rated• Load Bearing• Shear Wall• Double Stud• STC 50 min• NRC-TL-93-255

o (For acoustics)

Corridor Ceiling• 1 Hour Rated• 6x10 Beams• 14” I Joists• MEPF Within Rated Enclosure

Corridor Ceiling• 1 Hour Rated• Heavy Timber Construction• 3x Flooring• MEPF Outside Rated Enclosure

Corridor Ceiling• 1 Hour Rated• 9 ½” I Joists • Dropped Ceiling• MEPF Outside Rated Enclosure

Wood Frame Detailing – Fire & Shaft Walls

Fire Wall Detailing• Structurally Independent• UL U336

o (2) 1” Shaft Wallo H Studso ¾” Air Gapo Non rated wood wallso Breakaway clipso Continuous Plywood

Fire Wall Detailing• Structurally Independent• Two Wood Frame Walls• Plywood Continuous• Fire Coated Plywood at Rim• Fire Coated Plywood at Wall Gap

Fire Wall Detailing

• Structurally Independent• Masonry Walls• Furred Plumbing Walls

Shaft Wall Detailing

• Mechanicalo 2 hour rating thru 1 hour wallo One side with shaft wall for accesso http://www.woodworks.org/wp-

content/uploads/wood_solution_paper-Shaft-Wall-Solutions-for-Wood-Frame-Buildings-WoodWorks.pdf

Stair Wall Detailing• Stair• Rating Continuous• Only Beams Penetrate Shaft• Secondary Stair Framing• Furred wall for MEPF

Elevator Wall Detailing

• Elevator• Beam at Door Opening• C-T Shaft Wall

Wood Frame Detailing – Roof / Ceiling

Roof Detailing

• Flat Joists• 1 Hour Bearing Wall• 1 Hour Roof Ceiling• Unrated Parapet• Unvented Roof Assembly

Roof Detailing

• Tapered Joists• 2 Hour Bearing Wall• 1 Hour Roof Ceiling• Unrated Parapet• Unvented Roof Cavity

Roof Detailing

• Open Web Joists• 1 Hour Bearing Wall• 1 Hour Roof Ceiling• Unrated Parapet• Vented Roof Assembly

Wood Frame Detailing – Balconies & Decks

Deck Detailing

• Bolt On Balcony• Aluminum or Steel• Sprinkler Requirements• Floor Area Implications

Deck Detailing

• Framed Balcony• Decking Options• Review Tested Assemblies

• Step and Slope Limitations• Review for Accessibility

• Venting Requirements• Waterproofing Implications

Wood Frame Detailing – Columns & Beams

Column Detailing

• Column Protectiono 8x8 = 1 layer GWB w/ covero 4x4 = 2 layers GWB w/ covero Wood = Char Rating Calcso http://www.woodworks.org/experttip/do-

light-frame-wood-columns-that-are-located-entirely-within-fire-resistance-rated-walls-also-require-individual-fire-protection-or-encasement/

Column Detailing

• Column Protectiono 4x4 = 2x8 wall minimumo Wood = Char Rating Calcs

Beam Detailing• Beam Protection

o Spray Applied Fire Resistive Material

Wood Frame Detailing

Questions?

This concludes The American Institute of Architects Continuing Education Systems Course

Jon Hall AIA

GGLO Design

jhall@gglo.com