Koelner D-TU-91 Bolt-Down Post Support 91 mm

The Koelner D-TU-91 bolt-down post support is a high-quality structural component engineered for the secure installation of wooden posts onto concrete foundations. Designed with a 91 mm diameter, this support provides a stable base for various timber structures, ensuring that posts remain upright and firmly anchored. The robust steel construction is treated with a specialized finish to offer enhanced resistance against corrosion and environmental wear, making it a reliable choice for long-term outdoor use.

Advantages

This post support offers exceptional structural stability by creating a rigid connection between the wooden post and the concrete surface. Its design minimizes direct contact between the wood and the ground, which helps prevent moisture absorption and subsequent rot, thereby extending the lifespan of the timber. The installation process is straightforward, allowing for efficient mounting without the need for deep excavation or complex foundation work. Furthermore, the durable steel material ensures that the support can withstand significant mechanical loads and varying weather conditions over time.

Suitable for

• Fencing and perimeter enclosures
• Pergolas and garden gazebos
• Timber carports and sheds
• Decorative garden structures

This product is not suitable for mounting posts into soft soil, sand, or loose gravel, as it requires a solid concrete base for proper anchoring. It is also not intended for use in high-load structural applications where specific engineering certifications for heavy-duty load-bearing steel columns are required.

Key specifications

• Diameter: 91 mm
• Material: Durable steel
• Application: Bolt-down mounting to concrete
• Finish: Corrosion-resistant coating

To use the Koelner D-TU-91, first ensure the concrete surface is level and clean. Position the support in the desired location and mark the anchor holes. Drill the holes into the concrete according to the requirements of your chosen anchor bolts. Secure the support firmly to the concrete using appropriate heavy-duty expansion bolts or chemical anchors. Once the base is securely fixed, insert the wooden post into the support and fasten it using suitable wood screws or bolts through the pre-drilled holes in the side plates.

What to consider before purchase

• Verify that the post diameter matches the 91 mm support size
• Ensure the concrete base is fully cured and structurally sound
• Check that you have the correct type of concrete anchors for your specific surface

For optimal performance and safety, regularly inspect the connections for any signs of loosening or corrosion, especially after extreme weather events. Ensure that the wood is treated for outdoor use to complement the durability of the steel support.