Posted By Jay Aitch Without my knowledge, my company has just taken possession of 6 vehicle trailers. The idea being that they will be used for additional temporary warehouse storage. Normal position of these trailers is on axels. However, ours will be situated on the floor. My problem is that in order to raise the roof of these trailers,it is necessary to unlock large spring loaded levers. At chest height when situated on the vehicles no too much of a problem but at floor level means that personnel have to stoop, and with some strength release these levers. Stooping or squating to release these levers leaves them vulnerable to being hit in the face/head by the lever. I need to strengthen my case for getting these release levers modified or containers changed. How do I measure the force of these levers and strength required to release/replace them? Is that a chart with guidelines? Is this out source to a specialist. Any assistance appreciated>