FIRE SAFETY OF CLT BUILDINGS IN CANADA

Authors

  • Joseph Z Su

Keywords:

cross-laminated timber, building fire safety and protection, fire resistance, performance based design, alternative solution

Abstract

This article provides an overview of the code requirements pertinent to large cross-laminated timber (CLT) buildings and the methods for meeting the requirements in Canada. Canadian building codes are objective-based. Compliance with the code is achieved by directly applying the acceptable solutions up to certain prescriptive building sizes (height and area) or by developing alternative solutions beyond the height and area limits. The fire safety design for a CLT building larger than the prescriptive limit must demonstrate that the building will achieve at least the minimum level of performance afforded by noncombustible construction in limiting the structural involvement in fire and contribution to the growth and spread of fire during the time required for occupant evacuation and emergency responses.

 

 

References

APA (2012) ANSI/APA PRG 320-2012. Standard for

performance-rated cross-laminated timber. APA—The

Engineered Wood Association, Tacoma, WA.

APA (2018) ANSI/APA PRG 320-2018. Standard for

performance-rated cross-laminated timber. APA—The

Engineered Wood Association, Tacoma, WA.

American Society for Testing and Materials (ASTM) (2016)

E119—16a. Standard test methods for fire tests of building

construction and materials. American Society for Testing

and Materials, West Conshohocken, PA.

Berzins R, Lafrance P-S, Leroux P, Lougheed GD, Su JZ,

Benichou N (2014) Solution for mid-rise wood construction:

Intermediate-scale furnace tests with encapsulation

materials. A1-100035-01.2. National Research

Council Canada, Ottawa, ON. 76 pp.

Bijloos M, Lougheed G, Su J, Benichou N (2014) Solution

for mid-rise wood construction: Cone calorimeter results

for encapsulation materials. A1-100035-01.1. National

Research Council Canada, Ottawa, ON. 53 pp.

Brandon D, Dagenais C (2018) Fire safety challenges of tall

wood buildings—Phase 2: Task 5—Experimental study

of delamination of cross laminated timber (CLT) in fire.

RISE Research Institutes of Sweden, Stockholm, Sweden.

pp.

CSA (2014) CSA O86-14. Engineering design in wood. CSA

Standards, Mississauga, ON.

Dagenais C (2014) Fire performance of cross-laminated

timber assemblies, chapter 8. Pages 1-57 in S Gagnon

and C Pirvu, eds. CLT handbook: Cross-laminated timber.

FPInnovations, Quebec, QC, Canada.

Forestry Innovation Investment (FII) (2018) Commons

tallwood house. Naturally:wood, Vancouver, BC, Canada.

https://www.naturallywood.com/emerging-trends/tall-wood/

brock-commons-tallwood-house (4 January 2018).

Gibbs E, Su J (2015) Full scale exterior wall test on Nordic

cross-laminated timber system. A1-006009.1, National

Research Council Canada, Ottawa, ON, Canada. 21 pp.

Gibbs E, Taber BC, Lougheed GD, Su JZ, Benichou N

(2014) Solution for mid-rise wood construction: Full-scale

fire test for exterior wall assembly using a simulated cross

laminated timber wall assembly with gypsum sheathing.

A1-100035-01.5, National Research Council Canada,

Ottawa, ON, Canada. 24 pp.

Harmsworth A (2016) Firestopping test witness report. GHL

Consultants Ltd., Vancouver, BC. http://cwc.ca/wpcontent/

uploads/2015/04/CLT-Firestopping-Testing.pdf (4 January 2018).

Harmsworth A, Dagenais C, Chen G, Heikkila R, Lougheed

G, Mahaffey J (2014) Fire safety and protection, chapter 5.

Pages 1-72 in E Karacabeyli and C Lum, eds. Technical

guide for the design and construction of tall wood

buildings in Canada. FPInnovations, Pointe-Claire, QC,

Canada.

Hasburgh LE, Zelinka SL, Bourne KJ, Tucholski DR,

Quellette JP (2018) Full-scale fire tests of a two-story

cross-laminated timber structure. in Proc. 2018 World

Conference on Timber Engineering (WCTE), August 20-

, 2018, Seoul, Republic of Korea. 7 pp. http://www.awc.

org/pdf/codes-standards/fire/WCTE-2018_Fire-Tests.pdf

(4 January 2018).

ISO (1999) ISO 834-1. Fire-resistance tests—Elements of

building construction—Part 1: General requirements. International Organization for Standardization, Geneva, Switzerland.

Janssens M (2015) Full-scale tests in a furnished living room

to evaluate the fire performance of protected crosslaminated

and nail laminated timber construction. SwRI

Project No. 01.21428.01.001. Southwest Research Institute,

San Antonio, TX. 85 pp. http://www.awc.org/pdf/

awc/AWC-NLT_CLT_Compartment_Fire-Final_Report.pdf

(4 January 2018).

Janssens M (2017) Development of a fire performance assessment methodology for qualifying cross-laminated

timber adhesives. SwRI Project No. 01.23086.01.001.

Southwest Research Institute, San Antonio, TX. 70 pp.

Klippel D, Schmid J, Frangi A (2017) Fire tests on crosslaminated timber panels glued with HB X and HB E

adhesive. ETH Zurich, Zurich, Switzerland. 11 pp.

McGregor CJ (2013) Contribution of cross-laminated timber

panels to room fires. MS thesis, Carleton University,

Ottawa, ON. 166 pp.

Medina Hevia AR (2014) Fire resistance of partially protected

cross-laminated timber rooms. MS thesis, Carleton

University, Ottawa, ON. 182 pp.

NFPA (2013) NFPA 13. Standard for the installation of

sprinkler systems. National Fire Protection Association,

Quincy, MA.

Nordic Structures (NS) (2018a) Arbora, Nordic Structures,

Montreal, QC. http://nordic.ca/en/projects/structures/arbora

(4 January 2018).

Nordic Structures (NS) (2018b) Origine, 13-storey building,

Quebec, Quebec. Nordic Structures, Montreal, QC. http://

nordic.ca/en/projects/structures/origine (4 January 2018).

NRC (2012) Supplement to the NBC 2010: Intent statements.

National Research Council ofCanada, Ottawa,ON, Canada.

NRC (2015a) National building code of Canada 2015. National

Research Council Canada, Ottawa, ON, Canada.

NRC (2015b) National fire code of Canada 2015. National

Research Council Canada, Ottawa, ON, Canada.

Osborne L, Dagenais C, Benichou N (2012) Preliminary CLT

fire-resistance testing report (Project No. 301006155)—

Final report 2012/13. FPInnovations, Quebec, QC, Canada.

Ostman B, Mikkola E, Stein R, Frangi A, Konig J, Dhima D,

Hakkarainen T, Bregulla J (2010) Fire safety in timber

buildings. SP Report 2010:19. SP Technical Research

Institute of Sweden, Boras, Sweden.

Regie du batiment du Quebec (RBQ) (2015) Batiments de

construction massive en bois d’au plus 12 ´etages (English

version: Mass timber buildings of up to 12 storeys, directives

and explanatory guide). Gouvernement du Quebec,

Quebec, QC, Canada. 60 pp.

Su J, Lafrance P-S, Hoehler M, Bundy M (2018) Cross

laminated timber compartment fire tests for research on fire

safety challenges of tall wood buildings—Phase 2. Fire

Protection Research Foundation, Quincy, MA.

Su J, Roy-Poirier A, Leroux P, Lafrance P-S, Gratton K,

Gibbs E, Berzins R (2014a) Fire endurance of crosslaminated

timber floor and wall assemblies for tall wood

buildings. A1-005991.1. National Research Council Canada,

Ottawa, ON, Canada. 45 pp.

Su JZ (2016) Fire endurance of exposed cross-laminated

timber floor for tall buildings. A1-008570.1. National

Research Council Canada, Ottawa, ON, Canada. 15 pp.

Su JZ, Lougheed GD (2014) Fire safety summary—Fire

research conducted for the project on mid-rise wood

construction. A1-004377.1. National Research Council

Canada, Ottawa, ON, Canada. 113 pp.

Su JZ, Lougheed GD, Benichou N, Berzins R, Lafrance P-S,

Leroux P (2014b) Intermediate-scale furnace tests for

encapsulation materials for use in protecting structural

elements. in Proc. World Conference on Timber Engineering,

August 10-14, 2014, Quebec, QC, Canada.

Su JZ, Muradori S (2015) Fire demonstration: Crosslaminated

timber stair/elevator shaft. A1-006010.1. National Research Council Canada, Ottawa, ON, Canada. 50 pp.

Taber BC, Lougheed GD, Su JZ, Benichou N (2014) Solution

for mid-rise wood construction: Full-scale apartment

fire test with encapsulated cross laminated timber

construction (Test APT-CLT). A1-100035-01.10. National

Research Council Canada, Ottawa, ON, Canada. 104 pp.

ULC (2010a) CAN/ULC-S102-10. Standard method of test

for surface burning characteristics of building materials

and assemblies. ULC Standards, Ottawa, ON, Canada.

ULC (2010b) CAN/ULC-S107-10. Standard method of fire

tests of roof coverings. ULC Standards, Ottawa, ON,

Canada.

ULC (2011) CAN/ULC-S115:2011-R2016. Standard method

of fire tests of firestop systems. ULC Standards, Ottawa,

ON, Canada.

ULC (2013) CAN/ULC-S134-13. Fire test of exterior wall

assemblies. ULC Standards, Ottawa, ON, Canada.

ULC (2014) CAN/ULC-S101-14. Standard method of fire

endurance tests of building construction and materials.

ULC Standards, Ottawa, ON, Canada.

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Published

2018-08-16

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Section

Research Contributions