Homework Answers
Factored load=300 kips
Effective length of column=17*2=34 ft
The lightest hp section that has compression capacity greater than 300 kips fir effective length of 34 ft about minor axis can be determined from the AISC tables and that would be the required hp section
Calculate OM, for the beam shown below. The tension steel consists of 8, Gr. 90, No....
Calculate OM, for the beam shown below. The tension steel consists of 8, Gr. 90, No. 9 bars and the compression steel consists of 2, Gr. 60, No. 8 bars. The beam is cast with 6 ksi concrete. Assume the compression steel yields (20 pts). 18 in. d' = 2.5 in. 5.0 in. d = 18 in. 4.0 in. 10 in. 4.0 in.
A car has a 50 L steel gas tank filled to the top with gasoline when...
A car has a 50 L steel gas tank filled to the top with gasoline when the temperature is 10°C. The coefficient of volume expansion of gasoline is β = 0.900 ✕ 10-3 K-1. Taking the expansion of the steel tank into account, how much gasoline spills out of the tank when the car is parked in the sun and its temperature rises to 28°C? Answer: ____ L
Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live l...
Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25 feet. Use AISC Table 4-1 for (a) Gr. 50 steel, (b) Gr. 65 steel, and (c) Gr. 70 steel
Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25 feet. Use AISC Table 4-1 for (a) Gr. 50 steel, (b)...
A steel pipe pile has an OD of 400 mm and a wall thickness of 10 mm. It is made of ASTM A252 Gr. 2 steel, fy ∼ 250 MP a....
A steel pipe pile has an OD of 400 mm and a wall thickness of 10 mm. It is made of ASTM A252 Gr. 2 steel, fy ∼ 250 MP a. The pile is subject to a vertical dead load of 20 kN and a live overturning moment of 95 kN-m in one direction. Determine whether the pile is adequate for the design. Ignore the effects of buckling for axial compression.
1-A metallic Cube weighs 50 gr is heated to 120.0 °C. If this metal cube is...
1-A metallic Cube weighs 50 gr is heated to 120.0 °C. If this metal cube is put in a calorimeter the contain 40 gr of water at 22.00 °C and after the equilibrium the temperature of the calorimeter is 33.66 °C calculate the amount of heat transferred in joules and specific heat capacity of the metal?
200 gr of water in a thermally insulated container. 200 gr of water is initially at...
200 gr of water in a thermally insulated container. 200 gr of water is initially at 25 o C in a thermally insulated calorimeter. a) If 50 gr of ice at –15 o C is dropped into this calorimeter what is the final temperature after thermal equilibrium is established. b) If Instead 300 gr of ice at –30 o C is added how much ice will remain when equilibrium is reached? c) In part (a) what is the change in...
Problem 2 [8 marks] A wall is composed of 75 cm of stainless steel (-17 Wm...
Problem 2 [8 marks] A wall is composed of 75 cm of stainless steel (-17 Wm and 4 cm of an insulating material. On one side of the wall, heat is continuously generated at a rate of 2500 W/m and the wan temperature is Ti = 500°C. On the other side of the wall, the air temperature is 30°C. a) Calculate the temperature at the steel and insulation interface, T b) Calculate the surface temperature of the insulating material (5)...
Q.3) 34 pts. This problem is to force you to learn and exercise with Grashof Number (Gr #) and natural convection. Gr # is dependent on the position, x, meaning that if there is a certain location...
Q.3) 34 pts. This problem is to force you to learn and exercise with Grashof Number (Gr #) and natural convection. Gr # is dependent on the position, x, meaning that if there is a certain location where the flow hits turbulent conditions, the convective heat transfer coefficient, h, attains a different value for the rest of the surface. Here, you are to calculate the average h for the wall shown below. The surface of the wall is assumed to...
Three companies #1, #2, and #3 provide 50%, 30%, and 20% of steel to a construction...
Three companies #1, #2, and #3 provide 50%, 30%, and 20% of steel to a construction site. From past records, the percentages of bad quality steel provided by these companies are 3%, 4%, and 5%, respectively. A steel sample is selected randomly and is found to be of bad quality. 1) What is the probability that this steel sample is coming from company #1? 2) What is the probability that the bad quality sample was produced by either company #1...
DQuestion 17 5 pts The cross section of a composite beam made of aluminum and steel...
DQuestion 17 5 pts The cross section of a composite beam made of aluminum and steel is shown in the figure. The moduli of elasticity are Ea 75 GPa and Es 200 GPa. Under the action of a bending moment that produces a maximum stress of 50 MPa in the aluminum, what is the maximum stress in the steel (MPa)? 30 mm 40 mm Aluminunm Steel 80 mm 0
Calculate OM, for the beam shown below. The tension steel consists of 8, Gr. 90, No. 9 bars and the compression steel consists of 2, Gr. 60, No. 8 bars. The beam is cast with 6 ksi concrete. Assume the compression steel yields (20 pts). 18 in. d' = 2.5 in. 5.0 in. d = 18 in. 4.0 in. 10 in. 4.0 in.
Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25 feet. Use AISC Table 4-1 for (a) Gr. 50 steel, (b) Gr. 65 steel, and (c) Gr. 70 steel
Select the lightest section to carry a compressive load of 200 kips dead load and 625 kips live load. The effective length KL is 25 feet. Use AISC Table 4-1 for (a) Gr. 50 steel, (b)...
1-A metallic Cube weighs 50 gr is heated to 120.0 °C. If this metal cube is put in a calorimeter the contain 40 gr of water at 22.00 °C and after the equilibrium the temperature of the calorimeter is 33.66 °C calculate the amount of heat transferred in joules and specific heat capacity of the metal?
Problem 2 [8 marks] A wall is composed of 75 cm of stainless steel (-17 Wm and 4 cm of an insulating material. On one side of the wall, heat is continuously generated at a rate of 2500 W/m and the wan temperature is Ti = 500°C. On the other side of the wall, the air temperature is 30°C. a) Calculate the temperature at the steel and insulation interface, T b) Calculate the surface temperature of the insulating material (5)...
Q.3) 34 pts. This problem is to force you to learn and exercise with Grashof Number (Gr #) and natural convection. Gr # is dependent on the position, x, meaning that if there is a certain location where the flow hits turbulent conditions, the convective heat transfer coefficient, h, attains a different value for the rest of the surface. Here, you are to calculate the average h for the wall shown below. The surface of the wall is assumed to...
DQuestion 17 5 pts The cross section of a composite beam made of aluminum and steel is shown in the figure. The moduli of elasticity are Ea 75 GPa and Es 200 GPa. Under the action of a bending moment that produces a maximum stress of 50 MPa in the aluminum, what is the maximum stress in the steel (MPa)? 30 mm 40 mm Aluminunm Steel 80 mm 0
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