JR Macdonald Laboratory 1999 Summer Short Course: Introduction to Mechanical Designs and Vacuum: ---------------------------------------------- Problem 1.1) a) How much does a beam line support column bend if a physicist leans at 10 degrees with his shoulder (5' above ground) against it? The physicist weights 200 lbs and his center of gravity is 4' above ground. The support column is fabricated from 1050 steel, schedule 40, 4" pipe (4.50" O.D., 4.026" I.D.) and a 10"x10" base plate bolted to the floor with four 1/4-20 SS bolts arranged in a 8x8" square. b) How much are the bolts strained by the physicist? Problem 1.2) a) How much does a 10 lbs detector sag if it is supported from a vertical plate with one 6" long, 304 SS, 1/4-20 all-threaded rod? b) What is the tilt angle of the detector? c) How much does the 10 lbs detector sag if it is supported with a four 6" long, 304 SS, 1/4-20 all-threaded rods, two 1" above and two 1" below the center line? Problem 1.3) Design a 10" long mount where a 12 lbs detector sags less than 0.02" and the tilt is less than 0.5 degrees. The detector has on its back three 1/4-20 taps on a 1" bolt circle. Make mechanical drawings for all required parts including the 6"CF-flange to be modified.