GHL CONSULTANTS LTD (GHL) has witnessed the testing of firestop systems installed within CLT assemblies to CAN/ULC-S115 2011 at Intertek Laboratories in Coquitlam on February 15 to 17, 2016. This report is supplemental to the attached test report in Appendix A produced by Intertek and serves four purposes:

To confirm that we witnessed the tests noted.

To provide our observations in addition to those recorded by Intertek.

To identify some reliable and sound interpolations of the data to support firestop judgments.

To identify, based on these tests and other tests of CLT assemblies (also included as appendices) witnessed by our office, some clear concepts that assist in application of the data to joint configurations.

The testing performed by Intertek on February 15 to 17 consisted of horizontal through penetrations within CLT floor assemblies being exposed to the standardized time temperature curve of CAN/ULC S101. The through penetrations tested were of cast iron, schedule 40, copper and plastic pipes, bundled cables and a drop in Hilti firestop device