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CLT & Engineered Wood Fastening Solutions

Simpson Strong-Tie have now released a dedicated range of fasteners and connectors for CLT and Engineered wood mass timber structures. 

Cross-Laminated Timber (CLT) is growing in popularity as a sustainable and beautiful construction material, favoured by Engineers and Architects for its elegance, sustainability and its cosmetic appearance. Practical too, CLT can be used for walls, floors and ceilings and is well suited to offsite assembly.

Simpson Stong-Tie products are purpose designed, made with the load and design requirements of these building materials specifically in mind. Thought has also been given to the install requirements with fast low torque install designs for these fasteners, and options for collated systems that make connectors quicker to install on site. Download the CLT Catalogue to learn more and view the full CLT Product Range.

CLT has various benefits making it an attractive building material. These benefits include:

  • Design flexibility — CLT has many applications. It can be used in walls, roofs or ceilings. The thickness of the panels can easily be increased by adding more layers and the length of the panels can be increased by joining panels together
  • Prefabrication — floors or walls made from CLT can be fully manufactured before reaching the construction site, which decreases lead times and could potentially lower overall construction costs
Key Features
  • The ABR255 is a hold down bracket designed for fixing CLT panels to concrete / timber floors and parapet walls. Very versatile, it is particularly resistant to shear loads thanks to its optimised geometry
  • For a concealed connection, the ETB concealed connector comes in two parts. The first is pocketed in the header timber and fixed with nails, while the second part is fitted to the end of the beam with screws. No slots or dowel holes need to be made, speeding up installation time on site
  • 3mm thick heavy duty nail plate NPB255 has been developed specifically to fix CLT panels to timber or concrete
  • TFLS Timber Frame Levelling System provides the combined function of levelling and fixing the sole plate to the foundation or substructure
  • The ESCRC Countersunk Structural Timber Screw is designed to connect two or more timber members together. The countersunk head gives flush fitting while allowing the timber members to close up firmly
  • The unique design of the HTT — a multi-ply seat formed from a single piece of steel — gives the tension tie extra strength at the concrete anchorage point. Timber structures that are subjected to uplift forces can be connected to a concrete support with the HTT hold down
Scope of Use
  • Cross-Laminated Timber (CLT)
  • Laminated Veneer Lumber (LVL)
  • Glued Laminated Timber (Glulam)
  • Engineered Wood Products (EWP)
Statement of Building Code Compliance

Simpson Strong-Tie products are compliant with the latest European requirements for construction products, and suitable for use with New Zealand sawn timbers, CLT, LVL, and other Engineered Wood Products designed by specific engineering design and NZS3604:2011 applications. 

The characteristic values published within the CLT catalogue have been determined from test values in accordance with BS EN 14358 for use with Limit State Design methods. Corresponding deflection limits are published, where appropriate, which indicates the amount of slip in the connection when the stated characteristic load is applied.

Full Catalogue: CLT & Engineered Wood Products

A leader in structural systems research, testing and innovation, Simpson Strong-Tie is among the world's largest suppliers of solutions and products, helping build safer, stronger structures.

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