Bollards are used in a myriad of applications, for one of several purposes. You need just to keep a sharp eye to see bollards around us every day. In parking lots, driveways, and drive-thru lanes, bollards are used to protect buildings, teller machines, utilities like 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 very important for safeguarding pedestrians in addition to guarding storage racks and capital equipment from fork truck collisions.
Other industries which look for a heavy usage of bollards for sale include automated car wash facilities, self-storage facilities, gas stations and convenience stores, propane dispensing, and parking garages, amongst others.
Foundation mounted bollards are usually set up in among two ways. The initial, most affordable way, is by using a plate mounted bollard. These bollards are steel pipes welded to your flat steel plate that may be anchored to your hard surface using concrete anchors. This process of installation is fast and inexpensive, requiring the installer to drill four to eight holes in the concrete and bolt on the bollard with expansion or screw anchors.
The downside to this particular installation method, when used with a rigid bollard, would be that the anchors are generally not strong enough to withstand anything greater than a minor collision. The plate anchors often are pulled up and perhaps the plate bends, leaving a post which leans and is not able to properly serve its purpose. Plate mounted bollards often require constant maintenance and replacement.
The second method for installing bollards involves utilizing a longer steel pipe and burying a percentage of this deep in the earth. This method provides the bollard far more strength than surface mounted, however it could be very expensive to put in if the surface is concrete and already poured. Installation in this case requires coring an opening in the surface utilizing an expensive diamond bladed coring saw. These machines and their blades are costly and require water cooling, developing a mess during installation. When the concrete is cored as well as the bollard is within place, the hole has to be backfilled with concrete to secure the bollard. For more strength, these bollards tend to be filled with concrete, as well. Even though the bollard pipe itself is relatively inexpensive, this installation method is costly and time consuming.
Although very strong, there are significant disadvantages to core installations. Above all, there is no share with this system upon impact. Though desired in high security applications, any vehicle impacting this kind of bollard is going to be significantly damaged as well as its passengers at risk of injury. Loads carried by fork trucks may also be thrown given the jarring impact likely to occur. Further, the bollard or its foundation may be damaged by this type of impact, again leaving a tilted and less effective barrier requiring costly maintenance to correct. Usually the steel bollard is beyond repair and should be replaced having an entirely new bollard.
Another drawback to this kind of installation is it is actually a permanent installation with little flexibility for movement. In factory applications, devices are often moved and rearranged. Bollards utilized to protect equipment or storage racks which are core-installed usually are not easily moved. The concrete around the bollard must be broken out as well as the large remaining hole filled, leaving a factory floor filled with unsightly patches. When the bollard is reusable after removal, the whole expensive installation process is started over in the new location.
Some designs have been designed to attempt to solve these issues with the use of plastic or spring loaded bollards, however these designs have problems with a lack of strength. If the plastic is of insufficient stiffness, the entire purpose of access denial is lost. On the contrary, very stiff plastic designs have had difficulty with long-term durability. Minor collisions often wear away at such devices, as well as in outdoor applications UV degradation turns into a concern.
Designed and patented in Europe by Belgian inventor Gerard Wolters is really a unique system which solves many of the problems connected with traditional foundation mounted bollards. In other words, the device utilizes a compressed rubber base to do something 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 attached to concrete using concrete anchor screws. These anchors affix the base component within the adapter, which pre-compresses the elastomer against the ground. The base and adapter pieces are made from a unique ductile cast iron, which makes the pieces less brittle than typical cast iron, and also has a really low (-40 degrees) brittleness temperature. The steel pipe which may serve as the bollard post is actually a typical steel pipe inserted in to the adapter. Standard pipe can be used to offer the final user the flexibleness to weld fencing using standard components if needed. Concrete fill is not needed in the bollard pipe, though is permitted. In fact, sign posts could be inserted into the post and concrete completed place.
Upon collision, the pipe and adapter can tilt in the base, forcing the adapter to help compress the elastomer in the direction of 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 car away from the bollard and going back to an upright position. The tilt in the pipe is limited to approximately 20 degrees at which point the bollard will become rigid.
Bollards are created in a variety of sizes, all of which can be right for various expected collision speeds and masses. Further, modular connectors which may be used to create fencing and guards away from multiple base units have already been created to eliminate welding. By utilizing multiple base units, the greatest strength from the rebounding bollard unit could be increased.
These new bollards make use of the much simpler way of surface installation, greatly reducing installation costs, and keep the flexibility to go bollards as conditions warrant. This can be accomplished minus the normal disadvantage of absence of strength, because the elastomer within the bollard system greatly cuts down on the maximum impact forces put on the base anchors. This is because deceleration of your impacting vehicle is much less severe than during an impact using a rigid bollard. Energy is transferred to the elastomer instead of right to a rigid post, decreasing the harsh impact of the relatively immovable object.
This leads straight to the most crucial benefits of the new bollard system and that is the reduction of injury to both offending vehicles and also to the bollard system itself. Direct harm to vehicles is reduced due to the decrease in peak impact force seen from the vehicle. This will not only avoid harm to the automobile, but the possibility of injury to a passenger is likewise reduced. In the case of a fork lift in a factory or warehouse, the chance of a thrown load is also reduced, avoiding the potential for bystander injury and stock loss.
Finally, damage to the bollard and its foundation is reduced. Since the post is constructed of strong steel pipe, it maintains its strength, but due to the forgiving nature, much less force is transferred to the cornerstone. This simplifies and eliminates maintenance while preserving an aesthetically pleasing facility.
These bollards has to be set up on concrete, as being an asphalt surface will not be of adequate strength to anchor the bollard system. Taking into consideration the replacement costs of damaged bollards, however, it may be affordable to pour a concrete pad and eliminate years of costly maintenance and asphalt repair. As earlier mentioned, each bollard is sized for expected loads in terms of mass and speed. Should that limitation be exceeded, it really is possible to break a part of the device. More than likely that involves the post, adapter, or base. Fortunately, the system is modular and easily 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 removing the concrete screw anchors and replacing the component.
The SlowStop Bollard method is an innovative new product which solves lots of the problems involved with bollard collisions as well as installation and maintenance issues. Injury to vehicles, passengers, vehicle loads, as well as the removable security bollards themselves is greatly reduced due to the absorption of impact energy by an elastomer hidden inside the lower bollard. This elastomer allows the bollard to tilt when impacted and return upright afterward. SlowStop Bollards are quick and inexpensive to put in, flexible as they are easily moved, and simple to keep up if there is the requirement. Safety fencing and barriers can be created using modular connectors, avoiding the need to weld pipe together.