A tie-down on the deck of a sailboat consists of a bent bar bolted at both ends, as shown in the figure. The diameter dg of the bar is 1/4 in., the diameter dw of the washers is 7/8 in., and the thickness t of the fiberglass deck is 3/8 in. If the allowable shear stress in the fiberglass is 300 psi, and the allowable bearing pressure between the washer and the fiberglass is 550 psi, what is the allowable load Pallow on the tie-down?

A composite drive shaft is made up of two sections: a solid steel core and a brass tube encasing the core. The steel core has a diameter of 80 millimeters, and the brass tube has a diameter of 100 millimeters. The maximum allowable shear stress for the steel is 100 megapascals (MPa), and for the brass, it is 50 MPa. What is the greatest torque (T) that can be safely applied to the shaft without exceeding the allowable shear stress in either material? 50 mm Brass 50 mm 40 mm Steel

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A scuba tank is being designed for an internal pressure of 2,650 psi with a factor of safety of 2.0 with respect to yielding. The yield stress of the steel is 69,000 psi in tension and 20,000 psi in shear. (Assume that the given radius or diameter is an inside dimension and that all internal pressures are gage pressures.) (a) If the diameter of the tank is 7.0 in., what is the minimum required wall thickness (in inches)? inches (b) If the wall thickness is 0.25 in., what is the maximum acceptable internal pressure (in psi)? psi

The column above is subjected to axial loading only. Assume the following: • E= 29000 ksi G = 10000 ksi • = 986 in4 A = 60 in? • L= 20 ft • Grade 60 steel (60 ksi yield stress) • The column is fixed at the top and pinned at the bottom Which of the following is closest to the maximum normal stress the column can support (before yielding or buckling)? 167 ksi 24 ksi 42 ksi 60 ksi

What maximum load P can be applied without exceeding an allowable stress of 70 MPa for aluminum or 120 MPa for steel? Can a larger load P be carried if the length of the aluminum rod is changed. the length of the steel portion being kept the same? If so, determine this length

AW18 x 40 standard steel shape is used to support the loads shown on the beam. Assume P = 25 kips, w = 3.6 kips/ft, LAB = 5.6 ft, LBC = 5.6 ft, and LcD = 16.8 ft. Determine the magnitude of the maximum bending stress in the beam. LAB Answer: Omax = i B LBC C ksi W LCD D ZOQ Q 214% TOP BARI ENG 11:41 am 35 28/04/2023 8 cores

A simply supported beam, circular in cross section, of span L supports a point load W at mid span. The length of elastic-plastic zone at the plastic hinge will be A 0.33 L B 0.41 L C 0.50 L D 0.58 L