Bollards are used in a number of applications, for one of several purposes. One needs just to keep a sharp eye to see bollards around us each 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 essential for safeguarding pedestrians in addition to guarding storage racks and capital equipment from fork truck collisions.
Other industries which locate a heavy utilization of steel bollards price include automated car wash facilities, self-storage facilities, gasoline stations and convenience stores, propane dispensing, and parking garages, amongst others.
Foundation mounted bollards are generally set up in among two ways. The very first, most inexpensive way, is with a plate mounted bollard. These bollards are steel pipes welded to some flat steel plate that may be anchored to a hard surface using concrete anchors. This technique 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 downside to this particular installation method, when combined with a rigid bollard, is that the anchors are usually not sufficiently strong enough to resist anything over 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 next method for installing bollards involves using a longer steel pipe and burying a portion of it deep in the ground. This technique affords the bollard a lot more strength than surface mounted, however it may be very costly to set up when the surface is concrete and already poured. Installation in cases like this requires coring a hole within the surface employing an expensive diamond bladed coring saw. These appliances along with their blades are costly and require water cooling, developing a mess during installation. Once the concrete is cored and the bollard is in place, the hole should be backfilled with concrete to secure the bollard. For more strength, these bollards tend to be full of concrete, also. Though the bollard pipe itself is relatively inexpensive, this installation technique is costly and time-consuming.
Although very strong, you can find significant disadvantages to core installations. Most significantly, there is no share with this technique upon impact. Though desired in high security applications, any vehicle impacting this type of bollard will be significantly damaged as well as its passengers at risk of injury. Loads carried by fork trucks can also be thrown given the jarring impact very likely to occur. Further, the bollard or its foundation may 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 kind of installation is it is actually 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 usually are not easily moved. The concrete surrounding the bollard must be broken out and the large remaining hole filled, leaving a factory floor packed with unsightly patches. When the bollard is reusable after removal, the entire expensive installation process is started over on the new location.
Some designs have been created to make an effort to solve these problems with the use of plastic or spring loaded bollards, however these designs are afflicted by a lack of strength. If the plastic is of insufficient stiffness, the complete 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, and in outdoor applications UV degradation becomes a concern.
Designed and patented in Europe by Belgian inventor Gerard Wolters is a unique system which solves many of the problems associated with traditional foundation mounted bollards. In other words, the program utilizes a compressed rubber base to act as 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 mounted on concrete using concrete anchor screws. These anchors affix the base component on the adapter, which pre-compresses the elastomer from the ground. The base and adapter pieces are created from a special 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 actually a typical steel pipe inserted to the adapter. Standard pipe is used to offer the conclusion user the flexibility to weld fencing using standard components if required. Concrete fill is not needed in the bollard pipe, though is permitted. In reality, sign posts can be inserted into the post and concrete completed place.
Upon collision, the pipe and adapter are allowed to tilt within the base, forcing the adapter to advance compress the elastomer toward the impact. The elastomer absorbs a lot of the vitality of the impact and lengthens the deceleration time of the car. The elastomer is of sufficient strength to then rebound, usually pushing the car from the bollard and going back to a vertical position. The tilt in the pipe is restricted to approximately 20 degrees after which the bollard will become rigid.
Bollards are created in a number of sizes, all of which can be appropriate 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 making use of multiple base units, the best strength of the rebounding bollard unit may be increased.
These new bollards make use of the more simple approach to surface installation, greatly reducing installation costs, while maintaining the flexibility to maneuver bollards as conditions warrant. This is accomplished with no normal drawback to absence of strength, because the elastomer within the bollard system greatly decreases the maximum impact forces applied to the base anchors. This is because deceleration of your impacting vehicle is far less severe than during an impact using a rigid bollard. Energy is transferred to the elastomer instead of straight to a rigid post, lowering the harsh impact of the relatively immovable object.
This leads straight to the most important features of the new bollard system and that is certainly the reduction of damage to both offending vehicles as well as the bollard system itself. Direct harm to vehicles is reduced due to the reduction of peak impact force seen through the vehicle. It will not only avoid damage to the automobile, but also the chance of trouble for a passenger is likewise reduced. When it comes to 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, 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, significantly less force is moved to the building blocks. This simplifies and eliminates maintenance while preserving an great looking facility.
These bollards should be installed on concrete, 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 many years of costly maintenance and asphalt repair. As previously mentioned, each bollard is sized for expected loads when it comes to mass and speed. Should that limitation be exceeded, it is actually possible to break a element of the system. Probably that concerns the post, adapter, or base. Fortunately, the device 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 may be replaced by carefully removing the concrete screw anchors and replacing the component.
The SlowStop Bollard system is an innovative new product which solves lots of the problems associated with bollard collisions in addition to installation and maintenance issues. Injury to vehicles, passengers, vehicle loads, and the removable stainless steel bollards themselves is greatly reduced due to the absorption of impact energy by an elastomer hidden in the lower bollard. This elastomer allows the bollard to tilt when impacted and return upright afterward. SlowStop Bollards are fast and inexpensive to set up, flexible since they are easily moved, and uncomplicated to maintain should there be the need. Safety fencing and barriers can be created using modular connectors, avoiding the need to weld pipe together.