How to Calculate Scissor Lift Length
The length of a scissor jack lift is proportional to the scissor support weight as well as the integrity of the steel cross sections over the length. The scissor structures weight and length are corollaries, meaning that the former determines the latter for a stable scissor jack. An extreme example of this to illustrate the point would be a 20-foot lift length that is featherweight made from Styrofoam that is practically weightless. It definitely will not be able to support at much of a height and could not support much at all.
In order to calculate the length of a scissor lift, determine how high in the air you need to support a platform that will support of the weight of the occupants and objects on the platform along with the platform's weight.
To be able to reach the necessary height within the weight support parameters, the number of cross sections of scissor folding supports sections which would be required to be extended at their full extension. Finally, you would never want to ascend a few workers up on a platform along with their materials that is on a platform supported by any kind of structure that is not stable because clearly any machinery that is susceptible to tipping would put individuals in an extremely dangerous situation.
Every cross section should be weighed to determined the overall weight and length of the scissor lift as well as the overall stability of the machinery. When entirely extended, determine the angle between the horizontal or ground level against the scissor arms measured.