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Investigation of Fire Performance of CLT Manufactured with Thin Laminates

To optimize material usage and lower manufacturing costs, North American producers have begun to manufacture CLT using thin laminations – those ranging from 19 to 25 millimetres in thickness. This may limit the applicability of some design provisions derived and validated using CLT with 35 millimetre laminations. To address a lack of consistency in charring models based on different lamination thicknesses, FPInnovations conducted a series of fire tests to evaluate and document the impact on the charring rate of using thin laminations.

Fire-Resistance of Timber-Concrete Composite Floor using Laminated Veneer Lumber

For mass timber floor systems to span long distances and meet performance expectations around vibration and acoustic criteria in midrise and taller wood buildings, timber-concrete composite floors would be a practical option. The fire behaviour of a series of hybrid systems have been tested by FPInnovations to the 2-hour fire resistance rating currently required for floor separations. The latest test on an LVL-concrete assembly proved again that these types of systems perform significantly greater than the required rating.