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22 Given: A 350 ft long, NW, f. = 5000 psi concrete building. The building undergoes...
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with...
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with six steel bars, each of-in. diameter (Es= 29 x 10 psi and as 6.5 x 10/F). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of 60°F. 6 ft 10 in 10 in The normal stress in the steel is ksi. psi The normal stress in the concrete is
The concrete post (Ec = 3.6 × 106 psi and αc = 5.5 × 10-6/°F) is...
The concrete post (Ec = 3.6 × 106
psi and αc = 5.5 × 10-6/°F) is
reinforced with six steel bars, each of 78-in.78-in. diameter
(Es = 29 × 106 psi and
αs = 6.5 × 10-6/°F). Determine the
normal stresses induced in the steel and in the concrete by a
temperature rise of 75°F.
The normal stress in the steel is _____ ksi.
The normal stress in the concrete is _____psi
6 ft 10 in. 10 in.
In the following reinforced concrete beam, bending moment is 150kip-ft and Ec = 3.75x10^6psi Es =...
In the following reinforced concrete beam, bending moment is
150kip-ft and Ec = 3.75x10^6psi Es = 30x10^6psi determine (a) the
stress in the steel (b) the madimum stress in the concrete
This is what I've done so far. I think the next step is to
calculate the distance of neutral axis from the bottom section
which should end up in a quadratic equation to solve for x.
Q4) In the following reinforced concrete beam, bending moment is 150kip-ft and E=3.75x10°Es=30x10ʻpsi...
Given a steel railroad track which was installed at 30 F. Let E = 29 x...
Given a steel railroad track which was installed at 30 F. Let E
= 29 x 10^6 psi and α = 6.5 x 10^-6 / F
If the temperature reaches 125 F,
a) Find the normal stress in the rails which are welded together
to form a continuous track.
b) Find the normal stress in the rails assuming the rails are 39
ft. long with 1/4" gap between them
3a fr オ Given: A steel railroad track which was installed...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level moment M= 200 ft-k, use the procedures from Chapter 2 to find (20 pts) the following using linear-elastic analysis procedures and using transformed section a. properties: compressive stress in the concrete (fc) tension stress in the bottom steel (fs) compressive stress in the top steel (f's) What is the applicable moment of inertia of the concrete section if the (10 pts) service level moment...
Example Problem # 17 Conservation Of Energy Steam at 1600-psi, 1000°F, and a velocity of 2-ft/s...
Example Problem # 17 Conservation Of Energy Steam at 1600-psi, 1000°F, and a velocity of 2-ft/s enters a turbine operating at steady state. As shown in Figure 4.51, 22% of the entering mass flow is extracted at 160-psi, 450°F, with a velocity of 10-ft/s. The rest of the steam exits as a two-phase liquid-vapor mixture at 1-psi, with a quality of 85% and a velocity of 150-ft/s. The turbine develops a power output of 9x108 Btu/hr. Neglecting potential energy effects...
A flat roof of a building in New Orleans, Louisiana is constructed of 4 in heavy...
A flat roof of a building in New Orleans, Louisiana is constructed of 4 in heavy weight concrete with 1 in insulation an a suspended ceiling. Total roof area is 6,000 ft. Room temperature is 70 ° F. What is the approximate roof cooling load at 11:00 am solar time in June ? (If you can not find the value that you calculated, select the nearest multiple choice answer listed below) 15,000 BTU/hr 20,000 BTU/hr 25,000 BTU/hr 30,000 BTU/hr
A...
Cracking Moment (Uncracked Concrete Stage) Problem 1) Problem 2.6 (page 55, McCormac and Brown, gth Ed.)...
Cracking Moment (Uncracked Concrete Stage) Problem 1) Problem 2.6 (page 55, McCormac and Brown, gth Ed.) Note: Modify the total depth of the beam from 24" to 26" and the depth of the steel rebars from 21" to 23". Transformed Area Method (Concrete Cracked- Elastic Stresses Stage) Problem 2) Problem 2.13 (page 56, McCormac and Brown, 8th Ed.) Note: Make the following changes: Change fe to 5 ksi use the values and dimensions shown in the figure below 1) 2)...
Consider water flowing to three faucets in a building through the very simple plumbing network shown...
Consider water flowing to three faucets in a building through the very simple plumbing network shown below. Every section of pipe in the figure is 25 ft long. Ali of the piping is nominal half-inch type L copper piping. The inlet pressure to the main pipe is constant at 50 psi and the pressure of the water leaving each faucet is 0 psi. The water has a temperature of 140°F. For the purposes of this analysis assume that there are...
Thermally Induced Stress- Example 11.9 A steel bolt through a 25-in.-long aluminum tube has the nut...
Thermally Induced Stress- Example 11.9 A steel bolt through a 25-in.-long aluminum tube has the nut turned on until it just touches the end of the tube. No stress is introduced bolt or the tube. The temperature of the assembly is raised from 60F to 70 F. If the cross-sectional area e bolt is 0.08 in.2 and the cross-sectional area of the tube s 0.25 in., find the stress induced in the bolt and tube by the temperature change. Es...
The concrete post (Ec 3.6 x 10 psi and ac 5.5 x 10/F) is reinforced with six steel bars, each of-in. diameter (Es= 29 x 10 psi and as 6.5 x 10/F). Determine the normal stresses induced in the steel and in the concrete by a temperature rise of 60°F. 6 ft 10 in 10 in The normal stress in the steel is ksi. psi The normal stress in the concrete is
The concrete post (Ec = 3.6 × 106
psi and αc = 5.5 × 10-6/°F) is
reinforced with six steel bars, each of 78-in.78-in. diameter
(Es = 29 × 106 psi and
αs = 6.5 × 10-6/°F). Determine the
normal stresses induced in the steel and in the concrete by a
temperature rise of 75°F.
The normal stress in the steel is _____ ksi.
The normal stress in the concrete is _____psi
6 ft 10 in. 10 in.
In the following reinforced concrete beam, bending moment is
150kip-ft and Ec = 3.75x10^6psi Es = 30x10^6psi determine (a) the
stress in the steel (b) the madimum stress in the concrete
This is what I've done so far. I think the next step is to
calculate the distance of neutral axis from the bottom section
which should end up in a quadratic equation to solve for x.
Q4) In the following reinforced concrete beam, bending moment is 150kip-ft and E=3.75x10°Es=30x10ʻpsi...
Given a steel railroad track which was installed at 30 F. Let E
= 29 x 10^6 psi and α = 6.5 x 10^-6 / F
If the temperature reaches 125 F,
a) Find the normal stress in the rails which are welded together
to form a continuous track.
b) Find the normal stress in the rails assuming the rails are 39
ft. long with 1/4" gap between them
3a fr オ Given: A steel railroad track which was installed...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level moment M= 200 ft-k, use the procedures from Chapter 2 to find (20 pts) the following using linear-elastic analysis procedures and using transformed section a. properties: compressive stress in the concrete (fc) tension stress in the bottom steel (fs) compressive stress in the top steel (f's) What is the applicable moment of inertia of the concrete section if the (10 pts) service level moment...
Example Problem # 17 Conservation Of Energy Steam at 1600-psi, 1000°F, and a velocity of 2-ft/s enters a turbine operating at steady state. As shown in Figure 4.51, 22% of the entering mass flow is extracted at 160-psi, 450°F, with a velocity of 10-ft/s. The rest of the steam exits as a two-phase liquid-vapor mixture at 1-psi, with a quality of 85% and a velocity of 150-ft/s. The turbine develops a power output of 9x108 Btu/hr. Neglecting potential energy effects...
A flat roof of a building in New Orleans, Louisiana is constructed of 4 in heavy weight concrete with 1 in insulation an a suspended ceiling. Total roof area is 6,000 ft. Room temperature is 70 ° F. What is the approximate roof cooling load at 11:00 am solar time in June ? (If you can not find the value that you calculated, select the nearest multiple choice answer listed below) 15,000 BTU/hr 20,000 BTU/hr 25,000 BTU/hr 30,000 BTU/hr
A...
Cracking Moment (Uncracked Concrete Stage) Problem 1) Problem 2.6 (page 55, McCormac and Brown, gth Ed.) Note: Modify the total depth of the beam from 24" to 26" and the depth of the steel rebars from 21" to 23". Transformed Area Method (Concrete Cracked- Elastic Stresses Stage) Problem 2) Problem 2.13 (page 56, McCormac and Brown, 8th Ed.) Note: Make the following changes: Change fe to 5 ksi use the values and dimensions shown in the figure below 1) 2)...
Consider water flowing to three faucets in a building through the very simple plumbing network shown below. Every section of pipe in the figure is 25 ft long. Ali of the piping is nominal half-inch type L copper piping. The inlet pressure to the main pipe is constant at 50 psi and the pressure of the water leaving each faucet is 0 psi. The water has a temperature of 140°F. For the purposes of this analysis assume that there are...
Thermally Induced Stress- Example 11.9 A steel bolt through a 25-in.-long aluminum tube has the nut turned on until it just touches the end of the tube. No stress is introduced bolt or the tube. The temperature of the assembly is raised from 60F to 70 F. If the cross-sectional area e bolt is 0.08 in.2 and the cross-sectional area of the tube s 0.25 in., find the stress induced in the bolt and tube by the temperature change. Es...
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