Bollards are utilized in a myriad of applications, for one of several purposes. One needs only to keep a sharp eye to view bollards around us every day. In parking lots, driveways, and drive-thru lanes, bollards are utilized to protect buildings, teller machines, utilities including gas meters, electrical equipment and fire hydrants, handicap parking signs, gate entry keypads, and to restrict usage of undesired areas. In factories and warehouses, bollards are essential for protecting pedestrians in addition to guarding storage racks and capital equipment from fork truck collisions.
Other industries which look for a heavy utilization of bollard post include automated car wash facilities, self-storage facilities, gas stations and convenience stores, propane dispensing, and parking garages, among others.
Foundation mounted bollards are usually placed in one of 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 which can be anchored to your hard surface using concrete anchors. This method of installation is quick 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 down-side to this installation method, when used in combination with a rigid bollard, is that the anchors are generally not strong enough to stand up to anything more than a minor collision. The plate anchors often are pulled up and maybe the plate bends, leaving a post which leans and has stopped being 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 technique provides the bollard a lot more strength than surface mounted, however it can be very expensive to install when the surface is concrete and already poured. Installation in cases like this requires coring an opening within the surface using an expensive diamond bladed coring saw. These machines as well as their blades are expensive and require water cooling, developing a mess during installation. When the concrete is cored and also the bollard is in place, the hole has to be backfilled with concrete to secure the bollard. For added strength, these bollards are frequently filled with concrete, as well. Even though the bollard pipe itself is relatively inexpensive, this installation strategy is costly and time intensive.
Although quite strong, you will find significant disadvantages to core installations. Above all, there is not any give this technique upon impact. Though desired in high security applications, any vehicle impacting such a bollard will be significantly damaged as well as its passengers vulnerable to injury. Loads carried by fork trucks can also be thrown due to the jarring impact likely to occur. Further, the bollard or its foundation can be damaged by this type of impact, again leaving a tilted and much less effective barrier requiring costly maintenance to correct. Frequently the steel bollard itself is beyond repair and must get replaced with an entirely new bollard.
Another disadvantage of this sort of installation is that it is 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 that are core-installed usually are not easily moved. The concrete around the bollard should be broken out and also the large remaining hole filled, leaving a factory floor filled with unsightly patches. When the bollard is reusable after removal, the entire expensive installation process begins over on the new location.
Some designs happen to be created to attempt to solve these complications through the use of plastic or spring loaded bollards, however these designs suffer from an absence of strength. In the event the plastic is of insufficient stiffness, the whole function of access denial is lost. On the other hand, very stiff plastic designs have gotten difficulty with long lasting durability. Minor collisions tend to wear away at such devices, and 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 most of the problems associated with traditional foundation mounted bollards. Simply put, the system utilizes a compressed rubber base to behave being an energy absorbing mass. This elastomer allows the bollard to tilt slightly when impacted, in the plethora of 20 degrees from vertical, then return upright while still stopping the colliding vehicle.
This system is attached to concrete using concrete anchor screws. These anchors affix the base component over the adapter, which pre-compresses the elastomer against the ground. The base and adapter pieces are made from a special ductile cast iron, which makes the pieces less brittle than typical cast iron, and has a very low (-40 degrees) brittleness temperature. The steel pipe which may serve as the bollard post is a typical steel pipe inserted in to the adapter. Standard pipe is utilized to offer the end user the flexibleness to weld fencing using standard components if necessary. Concrete fill is not needed within the bollard pipe, though is permitted. Actually, sign posts may be inserted to the post and concrete filled in place.
Upon collision, the pipe and adapter can tilt in the base, forcing the adapter to further compress the elastomer in the direction of the impact. The elastomer absorbs much of the energy in the impact and lengthens the deceleration period of the vehicle. The elastomer is of sufficient strength to then rebound, usually pushing the vehicle out of the bollard and going back to a vertical position. The tilt of the pipe has limitations to approximately 20 degrees after which the bollard can become rigid.
Bollards are made in a selection of sizes, all of which is suitable for various expected collision speeds and masses. Further, modular connectors which can be used to create fencing and guards out of multiple base units happen to be created to eliminate welding. By utilizing multiple base units, the ultimate strength of the rebounding bollard unit could be increased.
These new bollards utilize the more simple method of surface installation, greatly reducing installation costs, while keeping the flexibleness to move bollards as conditions warrant. This really is accomplished minus the normal downside of absence of strength, since the elastomer inside the bollard system greatly decreases the maximum impact forces placed on the base anchors. It is because deceleration of an impacting vehicle is much less severe than during an impact using a rigid bollard. Energy is moved to the elastomer as opposed to right to a rigid post, lowering the harsh impact of a relatively immovable object.
This leads directly to the most crucial advantages of the newest bollard system and that is certainly the reduction of damage to both offending vehicles as well as the bollard system itself. Direct injury to vehicles is reduced due to the decrease in peak impact force seen through the vehicle. It will not only avoid damage to the automobile, but also the probability of injury to a passenger is likewise reduced. In the case of a fork lift in a factory or warehouse, the possibility of a thrown load is also reduced, avoiding the opportunity of bystander injury and stock loss.
Finally, harm to the bollard along with its foundation is reduced. As the post is constructed of strong steel pipe, it maintains its strength, but because of its forgiving nature, much less force is moved to the foundation. This simplifies and eliminates maintenance while preserving an attractive facility.
These bollards has to be set up on concrete, as an asphalt surface is not of adequate strength to anchor the bollard system. Considering the replacement costs of damaged bollards, however, it could be economical to pour a concrete pad and eliminate many years of costly maintenance and asphalt repair. As mentioned before, 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 system. Probably which involves the post, adapter, or base. Fortunately, the device is modular and easily repaired. Posts may 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 eliminating the concrete screw anchors and replacing the component.
The SlowStop Bollard product is a revolutionary new product which solves many of the problems included in bollard collisions in addition to installation and maintenance issues. Harm to vehicles, passengers, vehicle loads, as well as the locking bollards themselves is reduced because of the 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 fast and inexpensive to set up, flexible as they are easily moved, and straightforward to keep up if there is the need. Safety fencing and barriers can be created using modular connectors, avoiding the need to weld pipe together.