Bollards are utilized in a myriad of applications, for one of various purposes. One needs just to keep a sharp eye to view 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 important for protecting pedestrians in addition to guarding storage racks and capital equipment from fork truck collisions.
Other industries which look for a heavy usage of buy steel bollards include automated car wash facilities, self-storage facilities, gas stations and convenience stores, propane dispensing, and parking garages, and others.
Foundation mounted bollards are usually installed in certainly one of two ways. The initial, most inexpensive way, is with a plate mounted bollard. These bollards are steel pipes welded to some flat steel plate which can 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 inside the concrete and bolt along the bollard with expansion or screw anchors.
The downside for this installation method, when combined with a rigid bollard, is the fact that anchors are typically not strong enough to resist anything over a minor collision. The plate anchors often are pulled up and maybe the plate bends, leaving a post which leans and is no longer able to properly serve its purpose. Plate mounted bollards often require constant maintenance and replacement.
The 2nd technique for installing bollards involves employing a longer steel pipe and burying a portion of it deep in the ground. This method provides the bollard much more strength than surface mounted, however it can be very costly to set up 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 appliances and their blades are expensive and require water cooling, developing a mess during installation. After the concrete is cored and also the bollard is at place, the hole has to be backfilled with concrete to secure the bollard. For more strength, these bollards tend to be full of concrete, too. Even though the bollard pipe is relatively inexpensive, this installation technique is costly and time intensive.
Although quite strong, you will find significant disadvantages to core installations. Above all, 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 may also be thrown because of the jarring impact very likely to occur. Further, the bollard or its foundation can be damaged by such an impact, again leaving a tilted and much less effective barrier requiring costly maintenance to correct. Often the steel bollard itself is beyond repair and must get replaced with an entirely new bollard.
Another downside of this type of installation is it is really a permanent installation with little flexibility for movement. In factory applications, tools are often moved and rearranged. Bollards employed to protect equipment or storage racks which can be core-installed 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 complete expensive installation process begins over in the new location.
Some designs have already been developed to attempt to solve these problems by using plastic or spring loaded bollards, however these designs are afflicted by a lack of strength. If the plastic is of insufficient stiffness, the complete function of access denial is lost. On the contrary, very stiff plastic designs have gotten difficulty with long term durability. Minor collisions have a tendency to wear away at such devices, as well as in outdoor applications UV degradation becomes a concern.
Designed and patented in Europe by Belgian inventor Gerard Wolters is actually a unique system which solves many of the problems associated with traditional foundation mounted bollards. In other words, the system utilizes a compressed rubber base to do something 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 method is attached to concrete using concrete anchor screws. These anchors affix the base component over the adapter, which pre-compresses the elastomer from the ground. The base and adapter pieces are created from an exclusive ductile cast iron, that makes the pieces less brittle than typical cast iron, and has a very low (-40 degrees) brittleness temperature. The steel pipe which functions as the bollard post is a typical steel pipe inserted in to the adapter. Standard pipe can be used to provide the end user the flexibility to weld fencing using standard components if necessary. Concrete fill is not needed inside the bollard pipe, though is permitted. In reality, sign posts could be inserted in to the post and concrete completed place.
Upon collision, the pipe and adapter are permitted to tilt in the base, forcing the adapter to help compress the elastomer toward the impact. The elastomer absorbs much of the vitality from the impact and lengthens the deceleration period of the car. The elastomer is of sufficient strength to then rebound, usually pushing the automobile out of the bollard and going back to an upright position. The tilt in the pipe has limitations to approximately 20 degrees after which the bollard will end up rigid.
Bollards are made in a variety of sizes, each 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 have already been created to eliminate welding. By using multiple base units, the best strength in the rebounding bollard unit could be increased.
These new bollards utilize the more simple way of surface installation, greatly reducing installation costs, and keep the flexibility to maneuver bollards as conditions warrant. This really is accomplished minus the normal disadvantage of insufficient strength, as the elastomer in the bollard system greatly reduces the maximum impact forces placed on the base anchors. The reason being deceleration of an impacting vehicle is much less severe than during an impact having a rigid bollard. Energy is transferred to the elastomer rather than straight to a rigid post, decreasing the harsh impact of any relatively immovable object.
This leads straight to the most crucial advantages of the newest bollard system and that is certainly the lowering of harm to both offending vehicles and to the bollard system itself. Direct damage to vehicles is reduced as a result of lowering of peak impact force seen from the vehicle. It will not only avoid harm to the vehicle, but also the probability of injury to a passenger is likewise reduced. When it comes to a fork lift in a factory or warehouse, the chance of a thrown load is additionally 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 its forgiving nature, a lot less force is transferred to the cornerstone. This simplifies and eliminates maintenance while preserving an great looking 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 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 in terms of mass and speed. Should that limitation be exceeded, it really is possible to break a element of the program. Probably that concerns the post, adapter, or base. Fortunately, the device is modular and simply repaired. Posts can be replaced by loosening several set-screws, wwbpkl and replacing, and re-tightening the set screws. Adapter and Base components may be replaced by carefully taking out the concrete screw anchors and replacing the component.
The SlowStop Bollard system is a progressive cool product which solves many of the problems associated with bollard collisions as well as installation and maintenance issues. Injury to vehicles, passengers, vehicle loads, as well as the removable bollards with locks themselves is greatly reduced because of the absorption of impact energy by an elastomer hidden inside the bottom 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 straightforward to keep if there is the necessity. Safety fencing and barriers are often created using modular connectors, avoiding the need to weld pipe together.