Garage Doors - A short Tutorial on Garage doors Safety and Installation
As a door expert witness, I will be called upon many times 12 months to evaluate garage door injuries. Doors come in many shapes and sizes. Their functions range from basic security of an area to cosmetic concealment. Most doors can be broken down into a few basic styles or categories. Typical modern doors for residential applications usually are predominantly of the overhead sectional variety. That kind of door comes in many configurations, materials, levels of insulation, and a wide range of appearance possibilities. They are presented as a prefabricated kit, or built as a custom design to complement the dacor associated with a building. Commercial warehouse type installations often dictate higher security requirements. Great for this security type of door is the "roll-up" style that resembles a roll top desk kind of door. This door can be manufactured with a number of materials that can be as strong because adjacent walls, making forced entry through this opening very hard. Other common commercial installations include aluminium single or sectional panel doors. These doors function more for closing off a previously secured area than for assuring point security. Garage Door Service And Repairs And Installs
In the past, the biggest concern with operating an overhead garage doors was the potential risks from the springs used for balancing the door weight. Pre mid 1960's door installations typically relied upon a set of stretched (tensioned) springs to aid the operation of the garage door pivoting hinges. These springs became loaded (tensioned) because door was moved in the closed position. Unloading (releasing) from the stored spring energy occurred because the door was opened on the horizontal overhead position. Probably the most dangerous aspects of these spring systems was any time a period of time, often with no maintenance or inspection, the points of attachment of those springs would rust or become weak. This weakening in the springs or points of attachment would often lead to an inadvertent explosive failure flinging the broken spring components throughout the garage, embedding the spring or steel components into the garage walls, cars or any other items in the path of travel. Unfortunately, sometimes individuals were in the path of travel of those explosive occurrences. Because these springs failed, as an attempted safeguard, some manufacturers devised a "caging" system for the springs. These cages were retrofitted onto the stretched springs in an attempt to capture the parts that will release if a failure occurred. While these caging devices were helpful, they were not completely effective. Some of these spring devices are still used today. Whenever this condition exists or the quality of garage components are questionable, an experienced professional service technician needs to be consulted.
In response to the inherently dangerous traditional style garage spring issues as above, a newer and safer system for opening the overhead garage door was created. The idea would have been to transfer the load or weight with the door via a cable and pulley system with a vertical rod now designed with a torsion (twisted) spring. This type of spring is installed with specialty hardware and bolts to a fixed plate at one end, while the entire spring is installed around a horizontal pipe. This load balancing system is normally installed directly over the header of the garage opening. Using appropriate cables, connectors and pulleys, the body weight of the garage door is transferred into the torsion spring system. The real difference between the old style stretched spring as well as the newer torsion spring could be the way that the spring energy is stored. With the old style stretched spring, the energy is stored and released by pulling for the spring or giving back the spring to its un-stretched condition. Having a torsion type of spring, the energy is imparted or removed by rotating the spring clockwise or counter clockwise based upon the direction of usage. With professional installation, the complete loading of the torsion spring is controlled with the garage installer, and it is determined by the weight and height and width of the garage door that it is operating. When this type of torsion spring fails, it remains attached and intact towards the location on the horizontal control rod where it was mounted. I have not got word of or seen any torsion spring fly across a garage, creating injury from failed components like with the stretched older style garage door springs. This is not to convey that injuries haven't occurred with the torsion style spring. Investing in this type of spring is usually safe when left into a trained garage door installation professional. Severe and high injuries have occurred when untrained, unqualified individuals have attempted to install or service this type of spring. In most installations, a warning tag is left attached alongside the torsion spring when the garage door is installed. This tag warns with the danger associated with the stored energy of this spring, and alerts untrained website visitors to not attempt any repair, adjustment or even touch the spring and associated hardware. In the event the label that should be that come with this spring becomes damaged, is taken away or tampered with, it is essential that a new warning label be reattached immediately to demonstrate the dangers of this spring tension Garage Door Service And Repairs And Installs
Doors can be operated manually (personally), as well as automatically (by power assisted motor). In both cases, the proper operation with the garage door is determined by the right balancing of the door weight, springs and related component hardware. An automatic power assisted motor cannot overcome an improperly balanced garage door. The weight of all garage doors is normally deceptive. Mainly because that a properly functioning door appears easy to open and close, many users do not realize the combined overall weight until springs are not able to assist the door rolling around in its operation. In all cases, regardless of type of garage door, the entire system of hinges, track, hardware, and door opener be a team. Problems with misalignment, shifting, or jamming can cause problematic operation of a door. Counter forces imparted to a garage door, not engineered to the components, can lead to injury. Inappropriate maintenance or complete insufficient maintenance has lead to severe bodily injuries. Forcing the operation of a garage door, when more than one components have become damaged or broken has resulted in serious bodily injuries. In all cases, maintenance is a crucial and essential requirement of proper operation of all door systems.
Contrary to an overhead kind of garage door, be it sectional or single panel, roll-up doors have a many different type of operating system. When these doors are used, they can be concealed in an overhead or under mounted trough. These doors operate much like a roll top desk door apart from how they are stored if not in the closed position. They normally coil because they are retracted, and require significant gear trains to lessen the effort required to move these doors up and down into position. Often the forces required to move these roll up doors require a reduction sort of transmission that allows a really heavy door being operated effortlessly. These doors might be chain driven either manually, or may be automated using electric motors. Roll up doors require more frequent evaluation and servicing compared to a standard overhead garage doors. The tracks which might be mounted vertically on sides of the garage opening need maintenance and cleaning more frequently, and are often blocked by foreign obstructions or damaged by collision of some sort. These roll up doors are often held open by some type of ratcheting action. Proper balancing of the doors is often more essential than an overhead form of door, as the weight of such type of doors is usually much greater than an overhead door.
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