Bollards are used in a myriad of applications, for one of various purposes. You need only to keep a sharp eye to see bollards around us every single 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 very important for protecting pedestrians as well as guarding storage racks and capital equipment from fork truck collisions.
Other industries which find a heavy use of steel bollard pricing include automated car wash facilities, self-storage facilities, gas stations and convenience stores, propane dispensing, and parking garages, and others.
Foundation mounted bollards are generally installed in one of two ways. The initial, most inexpensive way, is with a plate mounted bollard. These bollards are steel pipes welded to your flat steel plate which can be anchored to a hard surface using concrete anchors. This method of installation is quick and inexpensive, requiring the installer to drill four to eight holes within the concrete and bolt on the bollard with expansion or screw anchors.
The downside for this installation method, when used in combination with a rigid bollard, is that the anchors are usually not strong enough to stand up to 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 next way of installing bollards involves utilizing a longer steel pipe and burying a percentage of this deep in the ground. This process affords the bollard much more strength than surface mounted, however it may be very costly to install in the event the surface is concrete and already poured. Installation in this case requires coring an opening inside the surface utilizing an expensive diamond bladed coring saw. These machines and their blades are expensive and require water cooling, making a mess during installation. After the concrete is cored and also the bollard is at place, the hole should be backfilled with concrete to secure the bollard. For more strength, these bollards tend to be filled with concrete, too. Even though the bollard pipe itself is relatively inexpensive, this installation strategy is costly and time intensive.
Although quite strong, you can find significant disadvantages to core installations. Most importantly, 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 vulnerable to injury. Loads carried by fork trucks can also be thrown because of the jarring impact likely to occur. Further, the bollard or its foundation could be damaged by this kind of impact, again leaving a tilted and much less effective barrier requiring costly maintenance to fix. Frequently the steel bollard itself is beyond repair and must get replaced with the entirely new bollard.
Another downside of this type of installation is that it is really a permanent installation with little flexibility for movement. In factory applications, equipment is often moved and rearranged. Bollards utilized to protect equipment or storage racks that are core-installed are certainly 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. If the bollard itself is reusable after removal, the entire expensive installation process begins over at 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 too little strength. In the event the plastic is of insufficient stiffness, the whole purpose 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, as well as in outdoor applications UV degradation gets to be a concern.
Designed and patented in Europe by Belgian inventor Gerard Wolters is a unique system which solves many of the problems connected with traditional foundation mounted bollards. In other words, the device works with a compressed rubber base to act 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 technique 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 an exclusive ductile cast iron, making the pieces less brittle than typical cast iron, and also 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 used to give the conclusion user the flexibility to weld fencing using standard components if required. Concrete fill is not required in the bollard pipe, though is permitted. Actually, sign posts may be inserted in to the post and concrete completed 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 much of the vitality in the impact and lengthens the deceleration period of the automobile. The elastomer is of sufficient strength to then rebound, usually pushing the car away from the bollard and returning 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 designed in a selection of sizes, each of that is appropriate for various expected collision speeds and masses. Further, modular connectors which could be used to create fencing and guards from multiple base units have already been created to eliminate welding. By using multiple base units, the ultimate strength of the rebounding bollard unit may be increased.
These new bollards utilize the much simpler method of surface installation, greatly reducing installation costs, and keep the flexibility to move bollards as conditions warrant. This really is accomplished without the normal downside of lack of strength, since the elastomer in the bollard system greatly decreases the maximum impact forces placed on the base anchors. The reason being deceleration of the impacting vehicle is far less severe than throughout an impact having a rigid bollard. Energy is moved to the elastomer instead of right to a rigid post, decreasing the harsh impact of a relatively immovable object.
This leads straight to the most crucial advantages of the newest bollard system and that is certainly the decrease in harm to both offending vehicles and also to the bollard system itself. Direct harm to vehicles is reduced as a result of reduction of peak impact force seen by the vehicle. Not only will this avoid injury to the automobile, but the probability of injury to a passenger is likewise reduced. With regards to a fork lift in a factory or warehouse, the chance 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. Since the post is constructed of strong steel pipe, it maintains its strength, but because of its forgiving nature, a lot less force is moved to the foundation. This simplifies and eliminates maintenance while preserving an aesthetically pleasing facility.
These bollards has to be placed on concrete, as being an asphalt surface is not of adequate strength to anchor the bollard system. Taking into consideration the replacement costs of damaged bollards, however, it might be economical to pour a concrete pad and eliminate 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 is actually possible to break a component of the system. Most likely which involves the post, adapter, or base. Fortunately, the program 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 method is an innovative 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 removable bollard themselves is cut down tremendously as a result of 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 since they are easily moved, and simple to maintain if there is the need. Safety fencing and barriers are often created using modular connectors, avoiding the necessity to weld pipe together.