Experimental investigations on Timber-Timber Composite (TTC) floor systems composed of Cross-Laminated Timber (CLT)-glulam are presented in this paper. The floor system was designed as part of two projects in Vancouver, the Sir Matthew Begbie Elementary School and the Bayview Elementary School. Quasi-static monotonic tests were conducted on full-scale 9.1 m long and 1.2 m wide double T-shaped ribbed composite floor segments. The TTC floors consisted of 3-ply CLT panels and two glulam beams connected by three different means: i) screws installed at 90°, ii) screws installed at 45°, and ii) screws installed at 90° with an additional adhesive bond. Six monotonic tests were conducted with two replicates from each type. While all three-floor types reached similar average load-carrying capacities, the TTC floors combining screws with glue exhibited the highest stiffness.