Some of the better advice we’ve seen regarding bollards and pedestrian flows comes in the form of this “leaflet.” It reinforces the need to be open-minded, flexible, and realistic when selecting, and budgeting for, bollards for a commercial site.
Some thoughts based on our experience:
The basic math behind bollards is simple – Knowing your threat vectors, distance, angles, acceleration, and weight. Then select the type of bollards you need based on the accepted (for the most part) industry standard of K4, K8, or K12.
Mount – shallow or deep. Due to cost, most sites opt for deep mounts. However, sometimes only shallow mounts are possible a limitation often not discovered until well into construction such as, for example, when unmapped existing utility lines are discovered.
Next, as the developers and architects begin to zero in on your recommendations, they begin to weigh the risk, the cost, practicality, and commercial appeal. Security professionals need to be prepared to offer alternatives, especially in the type (they don’t have to be traditional bollards), placement, and spacing – That’s where pedestrian flows matter both in terms of safety and commercial appeal.
Despite what some bollard manufacturers say, they don’t always have to be 48” or less part. Usually when they tell you that, it’s because their particular bollards only come mounted in a series (usually 4) of 48” apart. There are plenty of single mount, both shallow and deep, options available.
Worst case, assuming the math works out, you can design your own for use in lower-risk, constrained, areas such as vehicle drop-offs and turnarounds. Working with architects, project managers, and developers, we’ve developed some innovative, and very effective, customized bollards complimented with elegant covers and lighting, that are currently being used at some of the most high-end multi-use sights in the world. We’ve even used large (very large) truck tires in place of traditional bollards in rural industrial sites.
In all likelihood, bollards, and alternatives, will hit the contingency budget!
We’ll save retractable for another time. They've gotten easier to install but there’s limited need on large open multi-use sites, they are still relatively cost-prohibitive, and the limitations on the HPUs make them less practical.
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