Bollards are utilized in a number of applications, for one of various purposes. You need only to keep a sharp eye to see bollards around us every single day. In parking lots, driveways, and drive-thru lanes, bollards are used to protect buildings, teller machines, utilities including gas meters, electrical equipment and fire hydrants, handicap parking signs, gate entry keypads, and to restrict use of undesired areas. In factories and warehouses, bollards are essential for safeguarding pedestrians along with guarding storage racks and capital equipment from fork truck collisions.
Other industries which locate a heavy use of decorative bollard covers include automated car wash facilities, self-storage facilities, gasoline stations and convenience stores, propane dispensing, and parking garages, amongst others.
Foundation mounted bollards are typically set up in one of two ways. The initial, most affordable way, is with a plate mounted bollard. These bollards are steel pipes welded to your flat steel plate that may be anchored to some hard surface using concrete anchors. This technique of installation is quick and inexpensive, requiring the installer to drill four to eight holes inside the concrete and bolt down the bollard with expansion or screw anchors.
The downside to this particular installation method, when used with a rigid bollard, is the fact that anchors are usually not sufficiently strong enough to withstand anything more than a minor collision. The plate anchors often are pulled up and possibly the plate bends, leaving a post which leans and has stopped being in a position to properly serve its purpose. Plate mounted bollards often require constant maintenance and replacement.
The 2nd method for installing bollards involves utilizing a longer steel pipe and burying a part from it deep in the ground. This method provides the bollard a lot more strength than surface mounted, however it can be very costly to set up when the surface is concrete and already poured. Installation in this case requires coring a hole inside the surface using an expensive diamond bladed coring saw. These appliances as well as their blades are costly and require water cooling, developing a mess during installation. Once the concrete is cored and also the bollard is at place, the hole should be backfilled with concrete to secure the bollard. For additional strength, these bollards are often loaded with concrete, too. Even though the bollard pipe is relatively inexpensive, this installation method is costly and time consuming.
Although quite strong, you will find significant disadvantages to core installations. Most significantly, there is not any give to this system upon impact. Though desired in high security applications, any vehicle impacting such a bollard is going to be significantly damaged along with its passengers vulnerable to injury. Loads carried by fork trucks can be thrown because of the jarring impact likely to occur. Further, the bollard or its foundation can be damaged by such an impact, again leaving a tilted and fewer effective barrier requiring costly maintenance to fix. Often the steel bollard itself is beyond repair and must be replaced with the entirely new bollard.
Another downside of this type of installation is it is a permanent installation with little flexibility for movement. In factory applications, tools are often moved and rearranged. Bollards used to protect equipment or storage racks that are core-installed are certainly not easily moved. The concrete surrounding the bollard must be broken out as well as the large remaining hole filled, leaving a factory floor filled with unsightly patches. In the event the bollard is reusable after removal, the complete expensive installation process begins over at the new location.
Some designs have been designed to make an effort to solve these complications by using plastic or spring loaded bollards, however these designs suffer from a lack of strength. When the plastic is of insufficient stiffness, the complete function of access denial is lost. On the other hand, very stiff plastic designs have had difficulty with long lasting durability. Minor collisions tend to wear away at such devices, and then in outdoor applications UV degradation gets to be a concern.
Designed and patented in Europe by Belgian inventor Gerard Wolters is actually a unique system which solves many of the problems related to traditional foundation mounted bollards. In other words, the program utilizes a compressed rubber base to act as being an energy absorbing mass. This elastomer allows the bollard to tilt slightly when impacted, in all the different 20 degrees from vertical, then return upright while still stopping the colliding vehicle.
This method is mounted on concrete using concrete anchor screws. These anchors affix the base component on the adapter, which pre-compresses the elastomer up against the ground. The base and adapter pieces are created from an exclusive ductile cast iron, making the pieces less brittle than typical cast iron, and also has an extremely low (-40 degrees) brittleness temperature. The steel pipe which functions as the bollard post is actually a typical steel pipe inserted to the adapter. Standard pipe is utilized to give the conclusion user the flexibleness to weld fencing using standard components if required. Concrete fill is not needed within the bollard pipe, though is permitted. Actually, sign posts may be inserted into the post and concrete filled in place.
Upon collision, the pipe and adapter are permitted to tilt in the base, forcing the adapter to advance compress the elastomer toward the impact. The elastomer absorbs much of the energy from the impact and lengthens the deceleration time of the car. The elastomer is of sufficient strength to then rebound, usually pushing the automobile out of the bollard and returning to an upright position. The tilt from the pipe is limited to approximately 20 degrees at which point the bollard will become rigid.
Bollards are made in a variety of sizes, each of which is appropriate for various expected collision speeds and masses. Further, modular connectors which could be used to create fencing and guards out of multiple base units have already been designed to eliminate welding. By utilizing multiple base units, the greatest strength of the rebounding bollard unit could be increased.
These new bollards utilize the much simpler method of surface installation, greatly reducing installation costs, while maintaining the flexibleness to maneuver bollards as conditions warrant. This is accomplished with no normal drawback to lack of strength, since the elastomer inside the bollard system greatly decreases the maximum impact forces applied to the base anchors. The reason being deceleration of the impacting vehicle is much less severe than during an impact using a rigid bollard. Energy is transferred to the elastomer instead of directly to a rigid post, lowering the harsh impact of any relatively immovable object.
This leads directly to the most significant benefits of the brand new bollard system and that is certainly the decrease in injury to both offending vehicles and to the bollard system itself. Direct injury to vehicles is reduced due to the reduction of peak impact force seen through the vehicle. It will not only avoid harm to the vehicle, but also the possibility of trouble for a passenger is likewise reduced. When it comes to a fork lift in a factory or warehouse, the risk of a thrown load is additionally reduced, avoiding the opportunity of bystander injury and stock loss.
Finally, harm to the bollard along with its foundation is reduced. Since the post is constructed of strong steel pipe, it maintains its strength, but due to its forgiving nature, significantly less force is moved to the building blocks. This simplifies and eliminates maintenance while preserving an aesthetically pleasing facility.
These bollards has to be set up on concrete, as an asphalt surface is not of adequate strength to anchor the bollard system. Thinking about the replacement costs of damaged bollards, however, it may be affordable to pour a concrete pad and eliminate numerous years of costly maintenance and asphalt repair. As previously mentioned, each bollard is sized for expected loads with regards to mass and speed. Should that limitation be exceeded, it is easy to break a element of the program. More than likely which involves the post, adapter, or base. Fortunately, the program is modular and simply repaired. Posts could be replaced by loosening several set-screws, wwbpkl and replacing, and re-tightening the set screws. Adapter and Base components could be replaced by carefully taking out the concrete screw anchors and replacing the component.
The SlowStop Bollard method is a revolutionary new product which solves lots of the problems included in bollard collisions in addition to installation and maintenance issues. Harm to vehicles, passengers, vehicle loads, as well as the removable security bollards themselves is reduced as a result of absorption of impact energy by an elastomer hidden inside the base of the bollard. This elastomer allows the bollard to tilt when impacted and return upright afterward. SlowStop Bollards are quick and inexpensive to set up, flexible as they are easily moved, and simple to keep should there be the necessity. Safety fencing and barriers are easily created using modular connectors, avoiding the need to weld pipe together.