The Simpson Strong-Tie PA Purlin Anchor and Strap-Tie Holdown is a versatile, code-approved solution for transferring uplift and lateral loads from wood framing into concrete or masonry. Designed for both roof purlin anchorage and stud-to-foundation holdown applications, the PA provides a reliable wood-to-concrete or wood-to-masonry connection in structural framing systems.

Whether securing roof purlins to a concrete wall or tying wall studs to a foundation as part of a continuous load path, the PA anchor delivers dependable performance in demanding environments. Available in G90 galvanized and ZMAX finishes, it offers corrosion protection options suited for a range of exposure conditions. Its flexible strap design allows for field positioning to accommodate various framing layouts while maintaining structural integrity.

Key Features

• Dual-Purpose Design: Functions as both a purlin anchor and a strap-tie holdown for multiple framing applications.
• Code Approved: Recognized for wood-to-concrete and wood-to-masonry connections when installed per manufacturer specifications.
• Continuous Load Path Support: Transfers uplift and lateral forces from roof or wall framing into the foundation.
• Flexible Strap Configuration: Allows field adjustment to meet framing conditions and alignment requirements.
• Corrosion Protection Options: Available in G90 galvanized and ZMAX finishes for enhanced durability.
• Structural Reliability: Engineered and tested to meet performance standards for anchorage and holdown applications.

Applications

• Connecting roof purlins to concrete or masonry walls
• Stud-to-foundation strap-tie holdown connections
• Post-frame and light commercial construction
• Agricultural buildings and metal roof systems
• Residential wall anchorage requiring uplift resistance
• Any wood-to-concrete or wood-to-masonry connection requiring a code-recognized strap anchor

Installation

The PA Purlin Anchor installs by embedding the anchor portion into concrete or masonry and fastening the strap to wood framing using specified nails or approved fasteners. Proper embedment depth, fastener type, and fastener quantity must follow Simpson Strong-Tie installation guidelines and applicable code requirements.

For holdown applications, the strap is positioned along the face of the stud and secured with the required fasteners to ensure full load transfer. For purlin anchorage, the strap wraps or aligns with the purlin as designed, maintaining correct fastener placement and spacing.

Always verify corrosion requirements, fastener compatibility, and load demands prior to installation. Refer to current Simpson Strong-Tie technical data and evaluation reports for allowable loads and installation details.

California Residents: WARNING