The Simpson MGT Medium Girder Tiedown is a connector engineered for moderate-load, two-ply-minimum applications where a secure connection between multi-ply roof members and concrete masonry unit construction is required. Built from 12-gauge steel with a G90 zinc galvanized finish, this medium girder tie gives contractors flexible strap placement - installed either vertically or wrapped over the top of the multi-ply truss - and can be bolted directly into CMU or used in combination with a holdown to suit varying structural conditions.

Key Features

• Two-ply minimum design - engineered specifically for multi-ply truss and girder assemblies, ensuring the connector matches the structural demands of the application
• Flexible strap installation - straps can be installed vertically or wrapped over the top of the multi-ply truss, giving installers options to work within varying job-site conditions
• CMU-compatible attachment - attaches to grouted concrete block with a minimum one #5 rebar horizontal in the top lintel block, providing a reliable anchored connection to masonry construction
• Holdown-compatible mounting - can be bolted directly into CMU or used in combination with a holdown, adding versatility across different structural configurations
• 12-gauge steel construction - provides the structural integrity needed for moderate-load girder and truss tie applications
• G90 zinc galvanized finish - adds a layer of corrosion resistance to help the connector hold up in demanding installation environments
• Minimum six 10d nails into the roof member face - the specified nailing requirement on the same side as the MGT base ensures a properly engaged, load-transferring connection

Why This Product

• Designed for real-world installation flexibility - the option to run straps vertically or wrap them over the truss top means this girder tie adapts to the constraints of the actual framing layout, reducing the need for field modifications
• Purpose-built for CMU construction - with direct bolt-down capability into grouted concrete masonry units or the option to pair with a holdown, this connector bridges the critical roof-to-masonry connection in a single, straightforward component
• Corrosion-resistant finish for lasting performance - the G90 galvanized coating is suited for construction environments where moisture exposure is a concern, helping protect the connector over the life of the structure
• Domestic manufacture from Simpson - produced by a brand widely recognized in structural connectors, this medium girder tie is made in the United States and built to the consistent quality standards professionals expect on code-compliant projects

Specifications

• Model Number: MGT
• Width: 3-3/4 in.
• Gauge: 12
• Coating/Finish: Zinc Galvanized, G90
• Install With: 5/8 in. anchor and 10d common nails
• Country of Origin: United States

Approved Applications

• Moderate-load connections for two-ply-minimum multi-ply truss or girder assemblies
• Attachment to grouted concrete masonry unit (CMU) construction with a minimum one #5 rebar horizontal in the top lintel block
• Installation directly into CMU or in combination with a holdown

Frequently Asked Questions

What is the minimum ply requirement for the Simpson MGT?

The MGT is designed for two-ply-minimum applications. It is not intended for use with single-ply members.

How can the straps on the MGT be installed?

The MGT offers flexible installation options - the straps can be installed either vertically or wrapped over the top of the multi-ply truss, depending on your specific project conditions.

What type of masonry is the MGT compatible with?

The MGT can be attached to grouted concrete block (CMU) with a minimum one #5 rebar horizontal in the top lintel block. It can also be used in combination with a holdown.

How many nails are required when installing the MGT?

A minimum of (6) 10d nails must be installed into the face of the roof member that is on the same side as the MGT base. The MGT is installed using a 5/8 in. anchor and 10d common nails.