Bollards are used in a myriad of applications, for one of several 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 like 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 safeguarding pedestrians in addition to guarding storage racks and capital equipment from fork truck collisions.
Other industries which look for 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, amongst others.
Foundation mounted bollards are usually installed in among two ways. The initial, most affordable way, is to use a plate mounted bollard. These bollards are steel pipes welded to your flat steel plate that can be anchored to a hard surface using concrete anchors. This process of installation is fast and inexpensive, requiring the installer to drill four to eight holes within 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 generally not 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 is no longer capable of properly serve its purpose. Plate mounted bollards often require constant maintenance and replacement.
The 2nd way of installing bollards involves utilizing a longer steel pipe and burying a portion of it deep in the earth. This technique provides the bollard a lot more strength than surface mounted, however it may be very costly to set up if 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 appliances and their blades are costly and require water cooling, developing a mess during installation. Once the concrete is cored and the bollard is within place, the hole must be backfilled with concrete to secure the bollard. For additional strength, these bollards are often filled with concrete, also. Though the bollard pipe itself is comparatively cheap, this installation method is costly and time-consuming.
Although quite strong, you will find significant disadvantages to core installations. Most significantly, there is absolutely no give to this technique upon impact. Though desired in high security applications, any vehicle impacting this kind of bollard will likely be significantly damaged as well as its passengers at risk of injury. Loads carried by fork trucks can also be thrown because of the jarring impact prone to occur. Further, the bollard or its foundation can be damaged by such an impact, again leaving a tilted and less effective barrier requiring costly maintenance to improve. Frequently the steel bollard itself is beyond repair and should be replaced having an entirely new bollard.
Another drawback to this kind of installation is that it is a permanent installation with little flexibility for movement. In factory applications, tools are often moved and rearranged. Bollards utilized to protect equipment or storage racks which can be core-installed are certainly not easily moved. The concrete surrounding the bollard should be broken out as well as the large remaining hole filled, leaving a factory floor filled with unsightly patches. In the event the bollard is reusable after removal, the entire expensive installation process begins over at the new location.
Some designs happen to be developed to try to solve these issues by using plastic or spring loaded bollards, however these designs have problems with too little strength. When the plastic is of insufficient stiffness, the whole purpose 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 then 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 many of the problems associated with traditional foundation mounted bollards. Simply put, the program uses 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 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 made from a unique ductile cast iron, making the pieces less brittle than typical cast iron, and also has an extremely low (-40 degrees) brittleness temperature. The steel pipe which functions as the bollard post is actually a typical steel pipe inserted in to the adapter. Standard pipe is used to give the end user the flexibleness to weld fencing using standard components if needed. Concrete fill is not needed in the bollard pipe, though is permitted. In fact, sign posts could be inserted into the post and concrete completed place.
Upon collision, the pipe and adapter are permitted to tilt inside the base, forcing the adapter to help compress the elastomer toward the impact. The elastomer absorbs a lot of the vitality in the impact and lengthens the deceleration duration of the automobile. The elastomer is of sufficient strength to then rebound, usually pushing the car out of the bollard and returning to an upright position. The tilt of the pipe is limited to approximately 20 degrees after which the bollard will become rigid.
Bollards are created in a number of sizes, all of which can be right for various expected collision speeds and masses. Further, modular connectors which could be used to create fencing and guards from multiple base units happen to be designed to eliminate welding. By utilizing multiple base units, the greatest strength of the rebounding bollard unit could be increased.
These new bollards utilize the much easier approach to surface installation, greatly reducing installation costs, and keep the flexibility to maneuver bollards as conditions warrant. This can be accomplished without the normal drawback to lack of strength, since the elastomer within the bollard system greatly cuts down on the maximum impact forces applied to the base anchors. It is because deceleration of your impacting vehicle is far less severe than throughout an impact having a rigid bollard. Energy is transferred to the elastomer rather than straight to a rigid post, reducing the harsh impact of the relatively immovable object.
This leads right to the most significant advantages of the new bollard system and that is certainly the reduction of injury to both offending vehicles as well as the bollard system itself. Direct damage to vehicles is reduced as a result of lowering of peak impact force seen from the vehicle. Not only will this avoid harm to the car, but the probability of trouble for a passenger is likewise reduced. With regards 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, damage to the bollard as well as its foundation is reduced. Because the post is constructed of strong steel pipe, it maintains its strength, but due to the forgiving nature, much less force is moved to the building blocks. This simplifies and eliminates maintenance while preserving an aesthetically pleasing facility.
These bollards must be set up on concrete, as an asphalt surface is not of adequate strength to anchor the bollard system. Thinking about the replacement costs of damaged bollards, however, it might be economical to pour a concrete pad and eliminate many years of costly maintenance and asphalt repair. As earlier mentioned, each bollard is sized for expected loads with regards to mass and speed. Should that limitation be exceeded, it really is possible to break a component of the device. More than likely that concerns the post, adapter, or base. Fortunately, the system is modular and easily repaired. Posts could be replaced by loosening several set-screws, wwbpkl and replacing, and re-tightening the set screws. Adapter and Base components can be replaced by carefully eliminating 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 as well as installation and maintenance issues. Damage to vehicles, passengers, vehicle loads, as well as the removable security bollards themselves is cut down tremendously because of the absorption of impact energy by an elastomer hidden in 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 put in, flexible because they are easily moved, and simple to keep if there is the necessity. Safety fencing and barriers are easily created using modular connectors, avoiding the necessity to weld pipe together.