Type of ladder based on its permanence

Type of ladder based on its permanenceThe ladder can be permanent or non permanent.Permanent stairs are usually used to connect:• two horizontal plane of the building• different building floorsThis type of staircase consists of steps that have the same height. The ladder can be straight, the letter "L", the letter "U", rotate or be from the combination. The components of the ladder, among others, are the height of the stroke (riser), the width of the tread, the landing, the nosing, the handrail and the balustrade. Examples of the use of this ladder for example as we encountered in residential buildings or offices, "stairs monkeys", and so on.Non-permanent ladder is commonly used to achieve higher horizontal plane, and is used only at certain times so it can be moved / stored. Examples of this type of ladder for example folding ladder.Construction AppliancesThe ladder is a connection that can be passed between the level of a building, and can be made of wood, stone, steel, concrete etc. etc. Statistics compiled by the National Security Council show that stairs are the cause of the greatest number of accidents at home, these accidents can be attributed to a variety of factors, which are certainly beyond the control of those who design and build stairs. However, there are too many accidents due to direct construction faults. The carpenter can make a valuable contribution to accident prevention if he plans and does his job well.Safety Techniques The National Bureau of Workers' Service Compensation Service has prepared the following standards as a suggestion for ladder builders to help eliminate some of the responsible causes for many accidents.1. The ladder should be free from hard shaking.2. The dimensions of the landing should be equal to or greater than the width of the ladder between the handrails and the wall.3. All aantride and optride in each step should be the same.4. All stairs should be equipped with substantial and 36 inch handrails at altitude from the center of the permanent footprint.5. All handrails shall have rounded corners and smooth surfaces and are free of splinters.6. The horizontal ladder angle shall not be more than fifty degrees and not less than twenty degrees.7. The stairs should not be slippery, and without any bolts, screws, or spikes protruding.