Product Overview

The RETENTION SYSTEM™ RS115 Socket is an intelligent foundation solution designed for the installation and maintenance of Ø114mm (4.5in) posts, which include traffic signals, bollards, signs, and lighting columns. This patented, world-leading design has been tested to International standards and is built with high-strength, reusable materials that can survive vehicle impact. It eliminates the need for repeat excavation, which reduces disruption and expense. The system supports sustainable infrastructure design by improving asset management and promoting environmental and safety policies.

Key Benefits

• Patented, high-strength, reusable design survives vehicle impact.
• Eliminates repeat excavation, disruption, and expense.
• Facilitates electrical cabling at ground level.
• Supports health and safety work practices.
• Easy to handle, adjust, and install on site.
• Facilitates Passive Safety design to EN12767 and is load rated to EN124 B125.

Applications

• Installation of Ø114mm (4.5in) posts (traffic signals, bollards, signs, lighting columns).
• Suitable for knock-down and access-control locations.
• Shallow foundation options are available for congested sites.

Features & Construction

• Post Size: Designed for Ø114mm (4.5in) posts.
• Head, Plug, Locking Lid: Made from Cast Steel.
• Body: Constructed from PP - Polypropylene Twin Wall.
• Base Options: Includes standard (flat) base, duck-foot bends (PC/ABS), and tee bends (Ductile Iron) for cable access.
• Setscrews: M16 A2 Stainless Steel.

Technical Specifications

The RS115 is available in multiple configurations. The A and B measurements refer to the Length and Width of the surface face (not buried), while C is the Foundation Depth and D is the Post Insertion Depth. The dimensions are specified below:

Installation & Maintenance

• Installation involves preparing the hole and compacting at least 75mm of MOT type 1 granular material in the base.
• The socket is then positioned in the centre of the hole, and the head rotated to the required orientation.
• The unit should be surrounded with concrete (ST4 mix or stronger), using a stump pole to achieve a vertical level.
• The system simplifies maintenance and seasonal schedules by allowing easy post removal and replacement without re-excavation.