Q20/The 600-kg industrial door is a uniform rectangular panel which rolls along the fixed rail D on its hanger-mounted wheels A and B. The door is main- tained in a vertical plane by the floor-mounted guide roller C, which bears against the bottom edge. For the position shown compute the horizontal side thrust on each of the wheels A and B, which must be accounted for in the design of the brackets.
Q20/The 600-kg industrial door is a uniform rectangular panel which rolls along the fixed rail D on its hanger-mounted wheels A and B. The door is main- tained in a vertical plane by the floor-mounted guide roller C, which bears against the bottom edge. For the position shown compute the horizontal side thrust on each of the wheels A and B, which must be accounted for in the design of the brackets.
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