A flat belt-driven roller conveyor is used to convey tote boxes of material from the receiving area in a warehouse to the storage area. The conveyor consists of two sections, 200

and 100 long. Rollers are on 6 centers. A WBR dimension of 27 is used. The tote boxes are 24 long and are equally likely to weight 10 lb, 20 lb, 30 lb, 40 lb, or 50 lb. The design clearance between tote boxes on the first conveyor (i.e., the 200 section) is 6.

a. The first conveyor operates at a speed of 200 fpm. What should be the speed of the second conveyor if the spacing between tote boxes is to be 8?

b. What would be the horsepower requirement for the longest conveyor based on an average load per tote box? Would you recommend this horsepower be used? If not, what loading condition would you use to specify the horsepower requirement?