English units

Problem 18
Figure 4-09 shows a siphon discharging oil (sp gr 0.90). The siphon is composed of 3-in. pipe from A to B followed by 4-in. pipe from B to the open discharge at C. The head losses are from 1 to 2, 1.1 ft; from 2 to 3, 0.7 ft; from 3 to 4, 2.5 ft. Compute the discharge, and make table of heads at point 1, 2, 3, and 4.
 

Problem 11
A horizontal pipe carries 30 cfs of water. At A the diameter is 18 in. and the pressure is 10 psi. At B the diameter is 36 in. and the pressure is 10.9 psi. Determine the head lost between the two points.
 

Problem 6
As shown in Figure 4-03, the smaller pipe is cut off a short distance past the reducer so that the jet springs free into the air. Compute the pressure at 1 if Q = 5 cfs of water. D₁ = 12 inches and D₂ = 4 inches. Assume that the jet has the diameter D₂, that the pressure in the jet is atmospheric and that the loss of head from point 1 to point 2 is 5 ft of water.
 

Problem 01
A piece of wood 305 mm (1 ft) square and 3 m (10 ft) long, weighing 6288.46 N/m³ (40 lb/ft³), is submerged vertically in a body of water, its upper end being flush with the water surface. What vertical force is required to hold it in position?
 

         

Problem
What is the pressure in pounds per square inch 4 ft below the surface of a liquid of sp. gr. 1.50 if the gas pressure on the surface is 0.4 atmosphere?
 

Problem
If the pressure in the tank of oil (sp gr 0.80) is 60 psi, what is the equivalent head: (a) in feet of oil, (b) in feet of water, and (c) in inches of mercury?
 

Problem 818
In Problem 817, determine the changed value of the applied couple that will cause M₂ to become zero.
 

Problem 817
Find the moment under the support R₂ of the continuous beam shown in Fig. P-817.
 

Problem 815
Find the moment at R₂ and R₃ of the continuous beam shown in Fig. P-815.
 

Problem 731
The beam shown in Fig. P-731 is connected to a vertical rod. If the beam is horizontal at a certain temperature, determine the increase in stress in the rod if the temperature of the rod drops 90°F. Both the beam and the rod are made of steel with E = 29 × 10⁶ psi. For the beam, use I = 154 in.⁴