Getting up higher than a person can reach standing on their own feet is something that needs to happen a good portion of the time. There are many reasons for this and some of the ways people devise to accomplish this are not safe. Ladders come in all sorts and sizes and the one that is used the most, in commercial applications of all kinds, are industrial extension ladders.
Unlike the A frame type ladder, an extension ladder must have something on which to lean for support. Unlike the A frame, this ladder can be made smaller and larger with the use of the extending piece. These ladders come in a number of sizes, materials and configuration for maximum adaptability to just about any job.
Aluminum, wood and fiberglass are all materials that these ladders are manufactured from. The wood ones are subject to molds and rot if not handled, maintained or stored properly. They are also the heaviest of all types. Many people believe that all equipment they use must be natural and, that being the case, many appreciate this material.
Aluminum is another material that is quite popular for these ladders. The lengths of most of these units cause many people to want this lightest of material. The aluminum, as it always does, resists corrosion, rust, rot, molds and mildews and keeps its shape for years. Professionals, needing to carry it from job to job appreciate this light weight item as it must usually be carried on top of their truck or van.
A very popular material for these items is fiberglass. This is strong and has all of the properties of aluminum. It is light weight and, for the naturalists, it can also be fabricated from recycled materials. It can be painted to present a better image when it becomes scratched or when needed for job or area specialization. It also has a very good characteristic for all of the building trades.
Electricians need fiberglass in their tools as it does not conduct electricity like aluminum or other metals do. Other trades, working around electrical connections, also need this protection as all professionals deal with the wiring even if only to move them for other tasks. Even wood ladders, when wet, will conduct this electricity and it is a dangerous element of construction for all concerned.
What makes an extension ladder extend is the system of pulleys that is incorporated at the top of the ladder. With this system in place, the operator can pull the rope, through the pulley, to bring the other section of ladder up. This other section has arms that swing out and will rest on the rung that is closest to the height the professional needs. This holds the extension at that position until it is lifted off and raised or lowered.
A frames are handy when there is a need for a little height. The extension ladder is available for heights above that and can have safety tie offs for various purposes. Since you should not step on the top two rungs of the average A frame, there is a lot wasted height. These will come in two or three section units with additional sections if needed.
Unlike the A frame type ladder, an extension ladder must have something on which to lean for support. Unlike the A frame, this ladder can be made smaller and larger with the use of the extending piece. These ladders come in a number of sizes, materials and configuration for maximum adaptability to just about any job.
Aluminum, wood and fiberglass are all materials that these ladders are manufactured from. The wood ones are subject to molds and rot if not handled, maintained or stored properly. They are also the heaviest of all types. Many people believe that all equipment they use must be natural and, that being the case, many appreciate this material.
Aluminum is another material that is quite popular for these ladders. The lengths of most of these units cause many people to want this lightest of material. The aluminum, as it always does, resists corrosion, rust, rot, molds and mildews and keeps its shape for years. Professionals, needing to carry it from job to job appreciate this light weight item as it must usually be carried on top of their truck or van.
A very popular material for these items is fiberglass. This is strong and has all of the properties of aluminum. It is light weight and, for the naturalists, it can also be fabricated from recycled materials. It can be painted to present a better image when it becomes scratched or when needed for job or area specialization. It also has a very good characteristic for all of the building trades.
Electricians need fiberglass in their tools as it does not conduct electricity like aluminum or other metals do. Other trades, working around electrical connections, also need this protection as all professionals deal with the wiring even if only to move them for other tasks. Even wood ladders, when wet, will conduct this electricity and it is a dangerous element of construction for all concerned.
What makes an extension ladder extend is the system of pulleys that is incorporated at the top of the ladder. With this system in place, the operator can pull the rope, through the pulley, to bring the other section of ladder up. This other section has arms that swing out and will rest on the rung that is closest to the height the professional needs. This holds the extension at that position until it is lifted off and raised or lowered.
A frames are handy when there is a need for a little height. The extension ladder is available for heights above that and can have safety tie offs for various purposes. Since you should not step on the top two rungs of the average A frame, there is a lot wasted height. These will come in two or three section units with additional sections if needed.
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