The Simpson Strong-Tie PAI Purlin Anchor is engineered specifically for securing I-joists to concrete or masonry walls, providing a code-approved wood-to-concrete and wood-to-masonry connection. Designed to support a continuous load path, the PAI helps transfer uplift and lateral forces from roof or floor framing directly into the foundation.

Unlike standard purlin anchors, the PAI is tailored for I-joist construction, accommodating the unique flange configuration of engineered wood framing. Its dual-embedment line simplifies installation by clearly indicating proper embedment depth for varying applications, helping installers achieve consistent and reliable performance. Built for strength and jobsite efficiency, the PAI anchor delivers dependable anchorage in residential and light commercial construction.

Key Features

• Designed for I-Joists: Specifically engineered to align with I-joist flanges for secure load transfer.
• Code Approved Connection: Recognized for wood-to-concrete and wood-to-masonry applications when installed per manufacturer specifications.
• Dual-Embedment Line: Provides visual guidance for proper embedment depth, improving installation accuracy and efficiency.
• Continuous Load Path Support: Transfers uplift and lateral forces from framing into the foundation.
• Durable Construction: Manufactured for structural performance in demanding framing environments.

Applications

• Anchoring roof or floor I-joists to concrete walls
• Wood-to-concrete foundation connections
• Wood-to-masonry wall connections
• Residential framing requiring uplift resistance
• Light commercial and engineered wood construction
• Post-frame and hybrid framing systems utilizing I-joists

Installation

The PAI Purlin Anchor is installed by embedding the anchor leg into concrete or masonry and fastening the strap portion to the I-joist flange using the specified nails or approved fasteners. The dual-embedment line assists with proper placement and embedment depth to meet code and load requirements.

For optimal performance, follow Simpson Strong-Tie installation guidelines regarding embedment depth, fastener type, and fastener quantity. Ensure proper alignment with the I-joist flange and confirm compatibility with corrosion requirements based on project conditions. Always refer to current technical data and evaluation reports for allowable loads and detailed installation requirements.

California Residents: WARNING