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The popularity of bollards has dramatically increased during the past decade as a result of heightened concerns about security. They may be an easy, practical, and cost-effective means of erecting anti-ram perimeter defense without creating a visual sense of a fortified bunker. Bollards are widely used for traffic direction and control, and in purely decorative applications. However, bollards can serve many functions beyond security. They can be used as purely artistic purposes, functioning as landscaping elements. Bollards can create visible boundaries of a property, or separate areas within sites. They can control traffic and they are often arranged to permit pedestrian access while preventing entry of vehicles.

Removable and retractable bollards can allow different amounts of access restriction for a variety of circumstances. They frequently inform us where we are able to and cannot drive, park, bike, or walk, protect us from crime, shield vehicles and property from accidents, and add aesthetic features to our own building exteriors and surrounding areas. Bollards can incorporate other functions such as lighting, security cameras, bicycle parking or perhaps seating. Decorative bollards are made in a selection of patterns to harmonize with a wide range of architectural styles. The prevalence of the very most common type of security bollard, the concrete-filled steel pipe, has encouraged the manufacturing of decorative bollards made to fit as covers over standard steel pipe sizes, adding pleasing form for the required function.

Exactly What Is A Bollard?

A bollard is really a short vertical post. Early bollards were for mooring large ships at dock, plus they are still used today. A normal marine bollard is manufactured in cast iron or steel and shaped somewhat just like a mushroom; the enlarged top was created to prevent mooring ropes from slipping off.

Today, the phrase bollard also describes a number of structures utilized on streets, around buildings, and in landscaping. In accordance with legend, the first street bollards were actually cannons – sometimes said to be captured enemy weapons – planted in the earth as boundary posts and town markers. When the availability of former cannons was used up, similarly shaped iron castings were created to fulfill the same functions. Bollards have since evolved into many varieties that are widely employed on roads, especially in urban areas, as well as outside supermarkets, restaurants, hotels, shops, government buildings and stadiums.

The most common type of bollard is fixed. The most basic is surely an unaesthetic steel post, about 914 to 1219 mm (36 to 48 in.) above-grade. Specially manufactured bollards include not merely simple posts, but in addition a multitude of decorative designs. Some feature square or rectangular cross-sections, but most are cylindrical, sometimes having a domed, angled, or flat cap. They come in a variety of metallic, painted, and durable powder coat finishes.

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Removable bollards are employed where the requirement to limit access or direct traffic changes occasionally. Both retractable and fold-down styles are employed where selective entry is often needed, and are designed and so the bollard can be simply collapsed to ground level and quickly re-erected. Both retractable units may be manually operated or automated with hydraulic movements. Movable bollards are large, heavy objects – frequently stone or concrete – that rely on how much they weigh instead of structural anchoring to remain in place. They are designed to be moved rarely, then only with heavy machinery like a fork-lift.

Bollards generally fall into three kinds of applications:

Decorative Bollards – decorative bollards for architectural or landscaping highlights;

Traffic and Safety Bollards – bollards that offer asset and pedestrian safety, in addition to traffic direction; and

Security Bollards and Post Covers – decorative, impact-resistant bollard enhancements

Decorative Bollards

Some bollards are intended purely to get an ornament. As standalone architectural or landscaping features, they can border, divide, or define an area. They can be accents, sentries, or supporting players to larger, more dramatic architectural gesture.

Decorative bollards are made to harmonize with both traditional and contemporary architectural styles. The second lean toward visual simplicity – often straight-sided posts with several reveals close to the top. Styles created to match various historic periods usually have more elaborate shapes and surface details. Included in this are flutes, bands, scrolls along with other ornamentation.The post-top is actually a distinctive feature; traditional bollard design often includes elaborate decorative finials, whereas contemporary versions frequently include a simple rounded or slanted top to discourage passersby from leaving trash or making use of them for impromptu seating. On the other hand, they are sometimes made flat and broad specifically to encourage seating. Common decorative bollard materials include iron, aluminum, stainless, and concrete.

Ornamental designs with elaborate detail are frequently made from iron or aluminum casting. Aluminum bollards are desirable for applications where weight is an issue, like a removable bollard. Aluminum units tend to be slightly more expensive than iron. For applications where a decorative bollard may be subjected to destructive impact, ductile iron is actually a safer choice than more brittle metals, as force will deform the metal instead of shatter and transforming it into possible hazardous flying projectiles.

Iron and aluminum bollards are often manufactured by sand-casting – a regular foundry technique that is certainly economical and well-fitted to objects this size. However, sand-cast objects frequently bear surface irregularities that often leave the finished product less popular with the attention. If high-finish consistency is desired, seek a manufacturer that will machine 100% of the surface after casting to create units having a uniform surface for max visual appeal.

Finish is a vital consideration in a decorative bollard, from functional as well as aesthetic standpoints. Bollards are, by their nature, prone to being scratched or nicked by pedestrians and vehicles. Those located near roadways are exposed to a relatively aggressive environment; petrochemical residues and splashes of diluted road de-icing salts may compromise wygcgg painted finishes. Factory-applied powder coating – which is seen on iron, aluminum, and steel – is surely an especially durable kind of painted finish. The application process increases a coating with very consistent coverage. During coating, any bare metal tends to attract the powder, eliminating pinholes in coverage. The baking procedure that completes the conclusion gives it additional toughness and abuse resistance.

In applications where greater physical abuse is predictable, decorative bollards made from aluminum might be a better option than iron. If the finish coat is damaged, aluminum oxidizes to your color that is generally more acceptable compared to red rust made by iron. Aluminum and stainless can also be found in a quantity of bare metal finishes. Functionality may be included in the otherwise decorative bollard. As an example, common option is the chain eye – linking several bollards with chain, creating a simple traffic direction system. A sizable metal loop or arm on the side of the post allows parking and locking of bicycles, an extremely popular choice as increasing numbers of people seek alternative green transportation. Bollards might also contain lighting units or security devices, including motion sensors or cameras.

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