Installing Martello Bollards with Embedded Footings
Instructions for embedding Reliance Foundry’s Martello Bollards in a concrete substrate
Designed with the same defensive architectural principles as historic Martello Towers, Martello Bollards are protective traffic guidance devices that prevent vehicles from entering pedestrian areas. They are typically installed on sidewalks to prevent vehicles from mounting the curb. The sloped edges should face the road to minimize vehicle damage and redirect the vehicle back to the road, preventing it from crossing into the pedestrian area.
Intended for applications where a high level of impact-resistance is required, Martello bollards are embedded in the concrete surface of a sidewalk. In these applications, the Martello Bollard’s foundation will play a significant role in the amount of impact-resistance provided.
It is important to note that Reliance Foundry’s installation recommendations serve only as general guidelines. To ensure that a Martello Bollard will deliver an adequate level of impact resistance for specific applications, it is recommended that a professional engineer be consulted.
Required Installation Equipment
Chalk Line (optional)
Touch up paint (easily sourced at automotive stores)
Installing Martello Bollards with Embedded Footings
Note: Bollards should be left in their packaging until the exact moment of installation
Ensure that that the installation site does not intersect any utility lines or other hazards:
Because it is necessary to penetrate the concrete surface when installing Martello Bollards, it advisable to check for water pipes, gas lines, and underground wiring. A core drill, in advance of an x-ray, may be required. Taking proper safety precautions can eliminate expensive down-time and prevent accidents.
Study the site plans:
Site plans are generally created by the project architect. The architect will mark the intended location of each Martello Bollard on the plan. Ensure that the plan coincides with the site and familiarize yourself with the intended arrangement of the Martello Bollards.
Designate where each Martello Bollard will stand:
If the bollards are intended to be installed in a uniform arrangement, it may be beneficial to snap a chalk line. The center-point placement of each bollard should be marked with chalk, spray-paint, or felt pen.
Create the installation hole:
Dig a hole to create a foundation for the Martello Bollard. The climate of the installation site and the substrate in which the Martello Bollard will sit will determine the size requirements of the installation hole. In general, the hole should be approximately 12” deep, noting that the installation hole should be dug to the depth of the area’s frost line. Local frost line depths can be obtained from the local building inspection department. To determine the width requirement of your hole, you may wish to consult a professional engineer, however the hole should extend a minimum of 8–12” from every side of the Martello Bollard; larger wide installation holes may be required depending on location.
Position the Martello Bollard in the installation hole:
Position the bollard so that the entire footing will rest in the concrete substrate. Many installers find it beneficial to use wood or brick to position the bollard so that top of the footing (A) is flush with the intended concrete surface. Ensure that the sloped side of the Martello Bollard’s body faces the road.
Pouring the Concrete
Mix and pour the concrete:
Ensure that the proper ratio of water and concrete mix is used. The concrete should have a similar texture to moldable clay. Begin to fill hole with concrete and, as the hole fills, direct and tamp the wet concrete into the Martello Bollard’s footing. Pour the concrete evenly and avoid disrupting the bollard. When the concrete reaches the surface of the installation hole, begin filling the body of the Martello Bollard though the holes at the top. Continue to pour until the wet concrete fills the base of the bollard to within 1/2” of the top.
Secure the cap:
Before the concrete has cured, remove the bollard cap from its packaging and screw the J-anchors (A) into the cap. Fit the cap onto the Martello Bollard, ensuring that the longer axis of the cap aligns with the long axis of the bollard base. Once they are aligned, press the cap and the J-anchors into the wet concrete until the cap sits flat on the base. The cover will not be adjustable once the concrete settles.
Allow the concrete to cure:
The time required for the concrete to cure will vary depending on the environment. Moisture in the air and cool temperatures can both significantly slow the process. It generally takes a minimum of 2–3 days for the concrete inside the bollard to cure.
Inspect the installation:
At a distance, examine the plane of view. The vertical side of each Martello Bollard should be perpendicular to the surface of the concrete, and the sloped side of each bollard should face the roadway.
Check the bollard for any signs of surface damage:
If the bollard was scratched or scraped during installation, repair it immediately with touch up paint, commonly found at automotive stores. Abrasions should be covered to avoid rust and ensure the proper life of the bollard.
Care and Maintenance
Martello Bollards are designed to deliver exceptional impact-resistance and an unsurpassed level of durability. They are finished with a resilient powder-coating and require little in terms of ongoing maintenance. The powder-coated finish will protect the bollard in typical North American climates; however, proper care and maintenance are required. In most environments, regularly-performed inspections and routine cleaning will ensure that a bollard retains its aesthetic appeal and does not rust or become damaged by the elements.