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John H. Balsley (May 29, 1823 – March 12, 1895) was a master carpenter and inventor, inventing a practical folding wooden stepladder and receiving the first U.S. patent issued for a safety stepladder in the year. He was born in Connellsville, Fayette County, Pennsylvania to George H. and Sarah (Shallenberger) Balsley. His father was also a ...
[26] [27] NIOSH developed a Ladder Safety App which was designed to improve extension and step ladder safety — a concern for those working in construction or any other task that requires ladder use. Motor vehicle crashes are another major safety hazard on construction sites.
From the small wooden stool, the Step stool grew to allow grabbing objects from higher places. The need led to the addition of a couple of steps, first of wood and then of light metal. The multi-step ones are also equipped with safety railings for the taller models. They are usually foldable so that they can be easily stored and transported. [3]
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Fastenal (FAST) hits a 52-week high on recognition as one of America's Safest Companies by EHS Today.
The safest angle for a ladder is 75.5°; if it is too shallow, the bottom of the ladder is at risk of sliding, and if it is too steep, the ladder may fall backwards. This angle is achieved by following the 4 to 1 rule for a ladder placed on a vertical wall: for every four feet of vertical height, the ladder foot should move one foot from the wall.
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