How to Calculate Scissor Lift Length
The scissor jack lift's length is proportional to the scissor support weight and 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 will be a 20-foot lift length which is featherweight made from Styrofoam which is pretty much weightless. It definitely can not support at much of a height and would not be able to support much at all.
Determine how high in the air the platform will be raised to determine or calculate the length of the scissor lift required to support the weight of both occupants and objects on the platform in relation to the weight of the platform.
In order to reach the required height within the weight support parameters, the number of cross sections of scissor folding supports sections that would be necessary to be extended at their full extension. Finally, you would never want to ascend some workers up on a platform with their supplies that is on a platform supported by any kind of structure which is unstable because obviously any machinery which is prone to tipping will put people in a very dangerous situation.
Determine the weight of each scissor cross-section. This is very important to determining the weight and length of the scissor lift you would need in addition to the overall stability of the equipment. When entirely extended, determine the angle between the scissor arms measured against the horizontal or ground level.