You are designing an indoor rollercoaster for adults in an a…

You are designing an indoor rollercoaster for adults in an amusement park.  You are tasked with calculating the minimum distance between the lowest support beam for the winding track above the riders and the seat under the rider’s thighs in order to provide enough clearance for most people to be able to raise their arms in excitement on the ride without them hitting the support beam. See image below for reference. What should you recommend be the minimum distance between the seat of the ride and the lowest beam above the track?

A standing workstation is used by one person – Janice, an as…

A standing workstation is used by one person – Janice, an assembly operator – throughout the work shift.   Other operators stop by Janice’s workstation from time to time, but she is the only one completing work at the workstation.  At what height should the workstation be set?