CTC
CTC is the connector specifically designed for timber-concrete floors. It is an approved self-drilling, reversible, fast, and minimally invasive system. Demonstrated to provide excellent structural and acoustic performance, it can be used both in newly built timber-concrete floors and in the restoration of existing ones.
The system ensures consistent shear transfer, high composite action, and remarkable ductility, guaranteeing optimised performance and reliable behavior in continuous and multi-span timber-to-concrete composite designs.
Timber-Concrete Floor Connector
The system has been tested and calculated with connectors arranged at 45°, both parallel and crossed, and at 30° parallel, with and without timber decking. It features a self-perforating tip and a countersunk cylindrical head. A counter-thread under the head acts as a visual indicator, making it easy to confirm correct installation at a glance. This design increases fastener tightness inside the concrete and reduces both installation and inspection time on site.
Description
The CTC connector is available in two diameters, 7 mm | 0.28 in and 9 mm | 0.36 in, and two lengths, 160 mm | 6 1/4 in and 240 mm | 9 1/2 in, to optimise the number of fasteners. Stiffness values are also calculated in the presence of vapor barrier sheets or soundproofing layers. Performance is maintained when used with acoustic membranes, ensuring both sound reduction and structural efficiency.
CTC has also been tested, certified, and calculated on high-density woods. Made of carbon steel with bright zinc plating, the connector for timber-concrete floors is approved for wood-based panels, solid timber, glulam, CLT, LVL, and high-density woods.
It complies with Service Class 1 and 2 according to Eurocode, and with dry service conditions as defined by the NDS. The fastener is also included in ICC-ES Evaluation Report ESR-4645 and ICC-ES Listing Report ELC-4645, providing independent verification of compliance and quality.
Finally, CTC is fully integrated into MyProject structural calculation software, enabling engineers to model and optimise timber-concrete floor systems with verified design data.
What is a timber-concrete floor and why use a connector like CTC?
A timber-concrete floor is a hybrid structural system that combines timber panels with a concrete topping , achieving higher stiffness, acoustic comfort, and durability. Using a connector like CTC ensures reliable shear transfer and ductility, optimising performance in both new constructions and restoration projects.
Documents
-
Technical data sheets
-
ICC-ES Evaluation report USA
-
ICC-ES Listing report CANADA
-
ETA Certificate
-
File CAD
-
File BIM.ifc
-
File BIM.rfa
