Fire endurance of cross-laminated timber floor and wall assemblies for tall wood buildings

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TypeTechnical Report
Series titleClient Report (National Research Council Canada. Construction); no. A1-005991.1
Physical description47 p.
AbstractStandard fire endurance tests were performed on a full-scale floor assembly and a full-scale wall assembly constructed with cross-laminated timber (CLT) as the main structural element. The full-scale floor assembly consisted of CLT panels encapsulated with fiberglass wool and a single layer of 15.9 mm thick Type X gypsum board on the exposed side and with two layers of 12.7 mm thick cement board on the unexposed side. The full-scale wall assembly was constructed from CLT panels encapsulated with two layers of 15.9 mm thick Type X gypsum board on both faces. Nine thermocouples were installed on the unexposed face of both assemblies to monitor the temperature rise throughout the test and nine deflection gauges were installed on each assembly to monitor deformations. The superimposed load applied on the floor assembly was 9.4 kN/m² and the load imposed on the wall assembly was 449 kN/m. The fire endurance period of the full-scale floor assembly was 128 minutes and that of the full-scale wall assembly 219 minutes. Both the full-scale floor assembly and the full-scale wall assembly failed structurally afterwards under the applied loading. No hose stream tests were carried out on the full-scale floor and wall assemblies.
Publication date
PublisherNational Research Council Canada. Construction
AffiliationNational Research Council Canada; Construction
Peer reviewedNo
NPARC number21277598
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Record identifier7deab8cb-6636-43d6-93d2-e97ef30f2ef1
Record created2016-04-27
Record modified2017-04-05
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