Koelner D-SP-170 Universal Rafter-Purlin Anchor 170x35 mm

The Koelner D-SP-170 Universal Rafter-Purlin Anchor is a professional-grade metal connector designed for robust timber construction. Measuring 170x35 mm, this anchor provides a reliable solution for securing rafters to purlins, ensuring that roof structures maintain their intended geometry and load-bearing capacity over time. Its design focuses on structural integrity, making it a dependable choice for both residential and commercial roofing projects.

Advantages

This rafter-purlin anchor is engineered for high durability and ease of installation in demanding construction environments. The high-quality metal construction offers excellent resistance to mechanical stress, ensuring that timber joints remain stable under various weather conditions and structural loads. Its universal design simplifies the connection process, allowing for efficient assembly while maintaining strict adherence to safety and building standards.

Suitable for

• Securing rafters to purlins in roof framing
• General timber construction and structural wood connections
• Reinforcing roof trusses in residential and commercial buildings
• Professional carpentry and framing projects

When it may not be suitable

This anchor is specifically designed for timber-to-timber connections and is not intended for use with masonry, concrete, or steel-to-steel structural joints. It should not be used in environments with high chemical corrosivity without additional protective coatings.

Key specifications

• Dimensions: 170x35 mm
• Material: High-quality structural metal
• Application: Rafter-to-purlin connection
• Design: Universal structural connector

How to use

To install the anchor, position it firmly against the junction of the rafter and the purlin. Ensure the timber surfaces are clean and properly aligned before fastening. Use appropriate structural screws or nails through the pre-drilled holes to secure the anchor to both wooden members. Always follow the structural design plan and local building codes regarding the number and type of fasteners required for the specific load-bearing application.

What to consider before purchase

• Verify the dimensions match your specific timber thickness
• Ensure the quantity purchased covers all required connection points
• Check compatibility with your chosen fasteners
• Confirm the load-bearing requirements of your project

Usage recommendations

For optimal structural performance, ensure that the fasteners used with the anchor are of the correct diameter and length as specified by the project engineer. Regularly inspect the connections during the construction phase to ensure all components are properly seated and tightened.