During the past decade due to heightened concerns about security the prominence of bollards has dramatically increased. In traffic direction and control and in purely decorative applications bollards are widely used. However, beyond security bollards can even serve many functions.
A bollard is a short vertical post. In cast iron or steel and shaped somewhat like a mushroom a typical marine bollard is produced and to prevent mooring ropes from slipping off the enlarged top is designed. Rising bollard is one such that is high on demand.
The word bollard also describes a variety of structures used in landscaping, on streets and around buildings. Cannons According to legend were the first street bollards actually -sometimes known as captured enemy weapons – as boundary posts and town markers, planted in the ground. Similar shaped iron castings were made to fulfill the same functions when the supply of former cannons was used up. In many varieties bollards have been evolved and that are widely employed on restaurants, roads, especially in urban areas, hotels, as well as outside supermarkets, shops, government buildings and stadiums.
The most general type of bollard is fixed. Specially manufactured bollards also include a wide variety of decorative designs apart from only simple posts. Maximum feature are cylindrical, sometimes with a domed, angled, or flat cap and few are square or rectangular cross-sections. They are available in a variety of metallic, painted, and durable powder coat finishes.
Where the need to limit access or direct traffic changes occasionally there comes the use of hydraulic bollard. Where selective entry is frequently needed both retractable and fold-down styles are employed, and are designed in such a way that the bollard can be easily collapsed to ground level and quickly re-erected. With hydraulic movements both retractable units may be manually operated or automated. They are designed in such a way so that they can be moved rarely, and with heavy machinery they can be moved with few such as a fork-lift.
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