The principle is simple work long hours or moving the level of need, it is best to use scaffolding. If you need to use a ladder, you must select the appropriate ladders basically divided into two categories, one straight ladder, one word ladder. Ladders can not stand alone, must be against the fixture, the US Occupational Safety and Health Administration regulations ladders to the top to be higher than the desire to reach the length of the horizontal plane (Special Considerations 3-foot ladder: feet) above 91 centimeters, commonly referred to as super stretch, super stretch main purpose is to make the center of gravity of the fixture near vertical ladder, the ladder up and down when people are less likely to tip over. But if the ladders can not meet the requirements of super-stretch, then the top of the ladder shall be fixed, and the ladder should be equipped with grasping means or handrail help to provide staff with up and down a ladder at any time to maintain three points of contact (ie feet and one hand) .

Many people know that metal ladders can not be used in hazardous locations in shock, but there are still many people in the United States due to falling metal ladder down bare wires and electrocution deaths a year, but with particular attention to even the ladder and fiberglass Ladder same problem shock may occur in the wet. While there are advantages fiberglass ladder strength and lightweight, but fiberglass is very easy to deteriorate due to sun exposure, and some chemicals can easily destroy the glass fibers. Therefore, the use of glass fiber ladder to special inspections, such as discoloration or cracks and other damage characteristics. Ladder ladder there are heavier than aluminum and easy to aging damage shortcomings.

Select ladder household ladder should be noted that the maximum load limit, when overweight people or carry heavy goods up and down the ladder special attention. Ladder truck into the United States according to the light work (light duty), work (medium duty), heavy work (heavy duty) and overweight Work) four grades, the maximum load of 91 kg (200 lbs), 102 kg (225 lbs ), 114 kg (250 lbs) and 136 kg (300 lbs). (At present, there is no specification)

Check the ladder before home use

Ladder safe to use the biggest problem is that most people without making inspection prior to use. Although sometimes it will break the ladder, aluminum ladder will bend, fiberglass ladder will be split in appearance is not always clear, but pay more attention to maintenance and inspection beforehand, most of the accidents can be avoided. Second is to check the foot of the ladder, and most of the metal ladder and fiberglass ladder has ladder booties (shoe), in order to increase friction and prevent slipping accidents, should be checked before using the ladder wear gloves if exhausted. Metal ladder will have to check whether the bolt is loose or damaged welding place, before climbing ladders to check the front hook.

Proper use of household ladder

Although there is a ladder foot of the ladder can seize the floor, but if the person standing on a ladder at the top of the body roll extract, it will form the center of gravity to move the entire ladder, when the lateral force and torque exceeds the friction and torque resistance will lead ladder slip or tip over. Further, using the basic principles of the ladder is to be placed on a solid and stable ground, usually outdoors because the ground is not flat, soft, easy to run into problems, while the interior grunge, slippery ground is also very dangerous. Therefore leveling the ground, remove debris or drying wet, it is very important.

Often see the phenomenon of incorrect use of ladders, one person standing on a ladder use mobile ladders swing mode, such as when the painter painted the ceiling, it is likely to cause rollover accidents; the second is to close together when the word ladder ladders to use, when co-ladder used as ladders, foot of the ladder can not provide enough friction, so it is likely to cause slipping accidents.

Ladder itself should be kept clean, dirt, grease and other slippery substances should always clean up. Nearby ladder job to maintain the "headroom", recommended to place warning signs, and other obstructions in order to prevent people or vehicles careless collision ladder, dangerous. In addition, as the ladder is placed in the front door lock or tie the best, or the person who set alert. Be sure to keep three points of contact principle up and down the ladder, such as climbing to carry tools, be sure to use the tool kit or tool belt, try not to use hand. Up and down the ladder to the first order - order and down, down the ladder should face the ladder is stepped down, not back the ladder. If you think someone needs help escalators midnight, you should get help. Finally, illness or medication could affect the balance of the situation, do not be brave to use a ladder.