A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 10 No. 6 bars at a depth of 14 in. The top row contains 6 No. 6 bars at a depth of 10.5 in. Determine the effective (centroidal) depth, d, of the steel.

A rectangular beam has a cross section of b = 14 in., h = 28 in., and d = 25.5 in. It is reinforced with two No. 7 Grade 60 bars. The concrete strength is 8,200 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the assumed modulus of elasticity of the concrete, Ec.

Explain the difference in pediatric and adult anatomy and function. 

The spherical face shield of an astronaut’s helmet is made from polycarbonate with a yield strength of 110 MPa. The shield has an outside diameter of 352 mm and a thickness of 5.1 mm. If the shield is successfully pressure tested to 805 kPa on Earth, determine the factor of safety with respect to yielding.

The PAT consists of assessing the appearance of the patient, the patient’s work of breathing and their blood pressure. 

Force P = 46 N is applied to a lever at the end of a 35-mm-diameter shaft. Force Q = 190 N is applied directly to the shaft. Determine the normal stress σy at point H. Let a = 170 mm and b = 225 mm.

A beam is singly reinforced with the reinforcement in two rows. The bottom row contains 7 No. 6 bars at a depth of 14 in. The top row contains 5 No. 5 bars at a depth of 10 in. Determine the effective (centroidal) depth, d, of the steel.

A 575 N person stands in the middle of a 2.70 m simply-supported beam. The beam has a base of 90 mm and a height of 175 mm. Determine the maximum horizontal shear stress in the beam.

Force P = 43 N is applied to a lever at the end of a 31-mm-diameter shaft. Force Q = 875 N is applied directly to the shaft. Determine the magnitude of the shear stress τxy at point H. Let a = 135 mm and b = 205 mm.

A tank with an inside diameter of 385 mm, a length of 785 mm, and a wall thickness of 3.9 mm was designed to withstand a pressure of 750 kPa. If the outside of the tank has corroded such that the thickness is now 92% of the original value, what should the pressure now be limited to?