PROBLEM 9.61 The cover for a 10 ×22-in. access hole in an oil storage tank is attached to the outside of the tank with four bolts as shown. Knowing that the specific weight of the oil is 57.4 lb/ft3and that the center of the cover is located 10 ft below the surface of the oil, determine the additional force on each bolt because of the pressure of the oil. SOLUTION Using the equation developed on page 491 of the text have AAPIyRyAyAγ′==Then ()23221ft57.4 lb/ft10 ft2210 in144 inR=××××876.94 lb=and ()1
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Harshad number, Tank, Storage tank, specific weight