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Que 6: Figure 3 shows a rolled steel beam of an unsymmetrical l-section. If a similar...
Figure 2a shows a composite beam made by placing three steel plates inside a wooden section....
Figure 2a shows a composite beam made by placing three
steel plates inside a wooden
section.
(a) Determine the maximum bending stress developed in the wooden
section and steel plate
if the beam is subjected to allowable bending moment, M of 20 kN.m.
Given that the
Modulus of Elasticity of wood is 13.1 GPa and steel is 200
GPa.
[14 Marks]
Figure 2a: Composite beam
(b) Figure 2b shows another beam without steel plates. Suggest the
maximum bending
stress for...
The built-up beam is made of steel as shown in Figure 1. Knowing that modulus of...
The built-up beam is made of steel as shown in Figure 1. Knowing that modulus of elasticity for the steel is E = 200 GPa 150 mm 20 mm 150 mm 150 mm 10 mm M '10 mm 300 mm А Figure 1 (1) If the allowable tensile and compressive stress for the beam are allow tension = 140 MPa and o = 210 MPa. allow compression respectively, determine the maximum allowable internal moment M that can be applied Determine...
answered to receive full credit. 3. (20 pts) For the L-section beam as shown in Fig-...
answered to receive full credit. 3. (20 pts) For the L-section beam as shown in Fig- ure 3 which is subjected to a positive bending moment about the z-axis of 90 kN·m, determine 1. (20 pts) Consider the beam with loading shown in Figure 1. (a) Draw the shear and moment diagrams. (a) the location of the centroid (2,P) relative (b) If the beam is constructed from A-36 struc- tural steel, determine the minimum top and bottom section modulii such...
points) The cross-section of the beam below is the same as in questions 3. Given this cros ion determine the follow...
points) The cross-section of the beam below is the same as in questions 3. Given this cros ion determine the following: a. (5 points) Find the normal stress acting at point A if M900 f"lb b. (5 points) Find the maximum compression stress acting on the c. (5 points) Find the maximum tension stress acting on the beami d. (5 points) If the maximum allowable stress is 5 ksi in either tension or compression determine the maximum bending moment M...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10' (mm2), and the 2d moment of area about x-x axis is Lu 10 (mm). (50%) Figure Q.2 e106.1 mm xx 1611 240 a. Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm2 tension and 20 N/mn2 compression. What applied moment can then be...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10° (mm), and the moment of area about x-x axis is Is < 10 (mm) Figure Q.2 440 e = 112.76 mm A = 73.32 Ixx = 155.55 |-240 a. Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm' tension and 20 N/mn* compression....
e = 108.3 mm A = 10 Ixx = 162.2 2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10 (mm',...
e = 108.3 mm
A = 10
Ixx = 162.2
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10 (mm', and the 2d moment of area about x-x axis is Iux x 10' (mm). (50%) Figure Q.2 240 Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm2 tension and 20 N/mn2 compression....
The figure shows a beam cross section with points A through C spaced across the depth...
The figure shows a beam cross section with points A through C spaced across the depth of the beam. The internal moment is shown on the coordinate axes. Which point has the largest absolute value of bending stress? A м, у O Point C O The bending stress is the same at every point. Point B There is not enough information to solve the question. O Point A
Figure 1 shows A fully symmetrical I beam of area A1 = 5472 mm?, and second...
Figure 1 shows A fully symmetrical I beam of area A1 = 5472 mm?, and second moment of areal = 59.9 x 10 mm' that is strengthened by attaching a plate of 10 mm thickness and 100 mm breadth at the top as shown in Figure 2. Pairs of 12 mm diameter steel bolts are used at regular 200 mm spacing along the beam to connect the plate to the I beam in an arrangement as shown in Figure 3....
3) For the diagram to the right, find the following 5 pts. For each section. Assume...
3) For the diagram to the right, find the following 5 pts. For each section. Assume the centroid is 244 mm from the base. Treat as solid single A) Moment area of inertia about the centroid B) Assume the beam is has a moment of M- 150 kN m. What is the bending (normal) stress at the top surface? State whether it is in compression or tension.
Figure 2a shows a composite beam made by placing three
steel plates inside a wooden
section.
(a) Determine the maximum bending stress developed in the wooden
section and steel plate
if the beam is subjected to allowable bending moment, M of 20 kN.m.
Given that the
Modulus of Elasticity of wood is 13.1 GPa and steel is 200
GPa.
[14 Marks]
Figure 2a: Composite beam
(b) Figure 2b shows another beam without steel plates. Suggest the
maximum bending
stress for...
The built-up beam is made of steel as shown in Figure 1. Knowing that modulus of elasticity for the steel is E = 200 GPa 150 mm 20 mm 150 mm 150 mm 10 mm M '10 mm 300 mm А Figure 1 (1) If the allowable tensile and compressive stress for the beam are allow tension = 140 MPa and o = 210 MPa. allow compression respectively, determine the maximum allowable internal moment M that can be applied Determine...
answered to receive full credit. 3. (20 pts) For the L-section beam as shown in Fig- ure 3 which is subjected to a positive bending moment about the z-axis of 90 kN·m, determine 1. (20 pts) Consider the beam with loading shown in Figure 1. (a) Draw the shear and moment diagrams. (a) the location of the centroid (2,P) relative (b) If the beam is constructed from A-36 struc- tural steel, determine the minimum top and bottom section modulii such...
points) The cross-section of the beam below is the same as in questions 3. Given this cros ion determine the following: a. (5 points) Find the normal stress acting at point A if M900 f"lb b. (5 points) Find the maximum compression stress acting on the c. (5 points) Find the maximum tension stress acting on the beami d. (5 points) If the maximum allowable stress is 5 ksi in either tension or compression determine the maximum bending moment M...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10' (mm2), and the 2d moment of area about x-x axis is Lu 10 (mm). (50%) Figure Q.2 e106.1 mm xx 1611 240 a. Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm2 tension and 20 N/mn2 compression. What applied moment can then be...
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10° (mm), and the moment of area about x-x axis is Is < 10 (mm) Figure Q.2 440 e = 112.76 mm A = 73.32 Ixx = 155.55 |-240 a. Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm' tension and 20 N/mn* compression....
e = 108.3 mm
A = 10
Ixx = 162.2
2. Figure Q.2 shows the section of a symmetrical prestressed concrete beam in which the eccentricity of the tendons is e mm, the cross-section area is A x 10 (mm', and the 2d moment of area about x-x axis is Iux x 10' (mm). (50%) Figure Q.2 240 Calculate the maximum allowable prestressing force if, at the prestressing stage, the allowable stresses are 1 N/mm2 tension and 20 N/mn2 compression....
The figure shows a beam cross section with points A through C spaced across the depth of the beam. The internal moment is shown on the coordinate axes. Which point has the largest absolute value of bending stress? A м, у O Point C O The bending stress is the same at every point. Point B There is not enough information to solve the question. O Point A
Figure 1 shows A fully symmetrical I beam of area A1 = 5472 mm?, and second moment of areal = 59.9 x 10 mm' that is strengthened by attaching a plate of 10 mm thickness and 100 mm breadth at the top as shown in Figure 2. Pairs of 12 mm diameter steel bolts are used at regular 200 mm spacing along the beam to connect the plate to the I beam in an arrangement as shown in Figure 3....
3) For the diagram to the right, find the following 5 pts. For each section. Assume the centroid is 244 mm from the base. Treat as solid single A) Moment area of inertia about the centroid B) Assume the beam is has a moment of M- 150 kN m. What is the bending (normal) stress at the top surface? State whether it is in compression or tension.
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