Bollards are utilized in a myriad of applications, for one of various purposes. One needs only to keep a sharp eye to view bollards around us each 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 usage of undesired areas. In factories and warehouses, bollards are very important for protecting pedestrians as well as guarding storage racks and capital equipment from fork truck collisions.
Other industries which look for a heavy use of metal bollards for sale include automated car wash facilities, self-storage facilities, service stations and convenience stores, propane dispensing, and parking garages, and others.
Foundation mounted bollards are generally placed in among two ways. The very first, least expensive way, is by using a plate mounted bollard. These bollards are steel pipes welded to your flat steel plate that can be anchored to some 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 along the bollard with expansion or screw anchors.
The down-side for this installation method, when combined with a rigid bollard, is that the anchors are typically not sufficiently strong to stand up to anything greater than a minor collision. The plate anchors often are pulled up and possibly the plate bends, leaving a post which leans and is not in a position to properly serve its purpose. Plate mounted bollards often require constant maintenance and replacement.
The second way of installing bollards involves utilizing a longer steel pipe and burying a percentage of it deep in the ground. This process gives the bollard far more strength than surface mounted, however it can be extremely expensive to install in the event the surface is concrete and already poured. Installation in this instance requires coring an opening within the surface using an expensive diamond bladed coring saw. These machines as well as their blades are costly and require water cooling, developing a mess during installation. When the concrete is cored and also the bollard is in place, the hole should be backfilled with concrete to secure the bollard. For more strength, these bollards are frequently loaded with concrete, as well. Although the bollard pipe itself 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 no give this method upon impact. Though desired in high security applications, any vehicle impacting such a bollard is going to be significantly damaged as well as its passengers in danger of injury. Loads carried by fork trucks can also be thrown because of 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 fewer effective barrier requiring costly maintenance to improve. Frequently the steel bollard itself is beyond repair and should get replaced with the entirely new bollard.
Another downside of this sort of installation is it is actually a permanent installation with little flexibility for movement. In factory applications, equipment is often moved and rearranged. Bollards employed to protect equipment or storage racks which can be core-installed usually are not easily moved. The concrete around the bollard should be broken out and the large remaining hole filled, leaving a factory floor full of unsightly patches. In the event the bollard itself is reusable after removal, the complete expensive installation process is started over in the new location.
Some designs happen to be created to try to solve these issues by using plastic or spring loaded bollards, however these designs have problems with a lack of strength. If the plastic is of insufficient stiffness, the whole function of access denial is lost. On the contrary, very stiff plastic designs have experienced difficulty with long term durability. Minor collisions tend to wear away at such devices, and 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 lots of the problems associated with traditional foundation mounted bollards. To put it simply, the device works with a compressed rubber base to behave as an energy absorbing mass. This elastomer allows the bollard to tilt slightly when impacted, in the range of 20 degrees from vertical, then return upright while still stopping the colliding vehicle.
This system is mounted on 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, making the pieces less brittle than typical cast iron, and has a very low (-40 degrees) brittleness temperature. The steel pipe which serves as the bollard post is really a typical steel pipe inserted into the adapter. Standard pipe is utilized to provide the conclusion user the flexibility 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 in to the post and concrete filled in place.
Upon collision, the pipe and adapter are permitted to tilt inside the base, forcing the adapter to advance compress the elastomer in the direction of the impact. The elastomer absorbs a lot 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 vehicle out of the bollard and going back to an upright position. The tilt from the pipe is restricted to approximately 20 degrees at which point the bollard will end up rigid.
Bollards are created in a number of sizes, all of which is appropriate for various expected collision speeds and masses. Further, modular connectors which may be used to create fencing and guards from multiple base units have already been created to eliminate welding. By using multiple base units, the greatest strength of the rebounding bollard unit could be increased.
These new bollards use the much simpler method of surface installation, greatly reducing installation costs, while keeping the flexibility to maneuver bollards as conditions warrant. This really is accomplished minus the normal disadvantage of lack of strength, since the elastomer in the bollard system greatly cuts down on the maximum impact forces applied to the base anchors. It is because deceleration of the impacting vehicle is much less severe than during an impact with a rigid bollard. Energy is moved to the elastomer as opposed to directly to a rigid post, reducing the harsh impact of a relatively immovable object.
This leads right to the most crucial benefits of the newest bollard system and that is the lowering of damage to both offending vehicles and to the bollard system itself. Direct injury to vehicles is reduced because of the lowering of peak impact force seen by the vehicle. This will not only avoid damage to the car, but also the possibility of trouble for a passenger is likewise reduced. In the case of a fork lift in a factory or warehouse, the possibility of a thrown load is additionally reduced, avoiding the opportunity of bystander injury and stock loss.
Finally, injury 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 foundation. This simplifies and eliminates maintenance while preserving an great looking facility.
These bollards should be placed on concrete, as being an asphalt surface is not really of adequate strength to anchor the bollard system. Thinking about the replacement costs of damaged bollards, however, it may be economical to pour a concrete pad and eliminate numerous 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 easy to break a element of the system. More than likely that 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 may be replaced by carefully taking out the concrete screw anchors and replacing the component.
The SlowStop Bollard product is a revolutionary new product which solves lots of the problems included in bollard collisions as well as installation and maintenance issues. Damage to vehicles, passengers, vehicle loads, and the removable security bollards themselves is cut down tremendously because of 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 fast and inexpensive to install, flexible as they are easily moved, and uncomplicated to keep up if there is the necessity. Safety fencing and barriers are easily created using modular connectors, avoiding the need to weld pipe together.