You are using an outdated browser version not supported by this website.
Click here to upgrade your browser

MDCST Diaphragm Tension Strap

Simpson Strong-Tie tested and load-rated tension straps and fasteners are designed to minimize cost and maximize speed and precision — while providing the strength, versatility and reliability you depend on. The MDCST48 is a 14-gauge high-capacity strap specifically designed to carry tension across a CLT floor or wall panel joint. The MDCST48 installs with Simpson Strong-Tie® Strong-Drive® SDS Heavy-Duty Connector Screws.

Key Features
  • Pre-punched screw holes speed fastener installation
  • High capacity eliminates the need for expensive shop-fabricated steel plates
  • Straps may be overlapped to reduce the physical space or footprint needed to transfer high loads across a panel joint
Scope of Use
  • CLT Floor or Wall Panel Joint
  • Floor-to-Floor Tie Down
  • Diaphragm Tension Strap
Statement of Building Code Compliance

Simpson Strong-Tie extensively test their connection solutions for reassurance that they will perform in the toughest conditions. Connector products comply with the AU/NZ timber connector requirements, and fastener products comply with the European timber fastener requirements. They are suitable for use with AU and NZ sawn timbers, CLT, LVL, and other engineered timber products designed by specific engineering design using AS 1720, NZS AS 1720.1, or NZS 3603, or for prescriptive/conventional connector applications AS 1684 and NZS 3604.

The quality and variety of these product lines gives engineers and builders more freedom to design flexibly, while offering reliable and proven performance. In addition, customers can count on technical support and a team of experienced field representatives.

The characteristic and design values published within this document have been determined from test and calculation values in accordance with AS 1649, AS 1720, and NZS 3603 for connectors and the fastener characteristic values from BS EN14358 for use with Limit State Design methods. Corresponding deflection limits are published, where appropriate, which indicate the amount of slip in the connection at the design capacity.


Construction Details & 3D Model
Full Catalogue: Mass Timber Construction Solutions

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.

Product Enquiries

News from Simpson Strong-Tie

Deck Structure Products: Making Deck Building Over Concrete Easier NEW
Developing High-Capacity Tension Straps for Mass Timber Engineering NEW
Quik Drive Screw Fixing Contributes to Acoustic Solutions
Get a free weekly digest of essential news

New and updated architectural products, design solutions, inspiration, technical advice and more when you sign up for EBOSS.