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Question: a) b) c Highlight the theory of Plastic Analysis with sketches Discuss types of steel...
Question a A beam of the cross section shown below is made of an elastic-plastic material for whi...
Question a A beam of the cross section shown below is made of an elastic-plastic material for which the yield stress is 300 MPa. Find the plastic moment M, and the maximum elastic moment M Also determine the distribution of the residual stresses in the beam after the plastic moment M, is appliod and then reloaoed. 8 mm +1 90 mm 8 mm 130 mn 8 mm
Question a A beam of the cross section shown below is made of...
The term I/crefers to: O Design Modulus O Centered Moment of Inertia O Section Modulus O...
The term I/crefers to: O Design Modulus O Centered Moment of Inertia O Section Modulus O Modulus of Inertia Question 54 Normally beams that are short and carry large loads, especially those made of wood, are first designed to resist shear and then later checked against the allowable-bending-stress requirements. O True O False Question 55 For a relatively long beam, after designing for bending stress, one must check: That the beam doesn't weigh too much That the beam doesn't buckle...
Part A- Answer all questions (Total Marks for Part A: 120) Part A- Question 1 (Total...
Part A- Answer all questions (Total Marks for Part A: 120) Part A- Question 1 (Total Marks for Part A - Question 1: 24) A 140mm thick concrete slab is supported by a series of parallel 460UB82.1 steel beams at 2400mm centres. Assume there is sufficient bond between the steel beam and the concrete slab to enable the materials to act together as a composite unit Assume for steel E 200 GPa ? 280 MPa for concrete E-25 GPa ?...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure,...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure, the following strains were established from the measurements taken:£x = 75x10", Eyy =-115x10-6 = 210 10-6 and Yxy yy (i) Determine the corresponding normal stresses Ox and and shear stress txy. For mild steel, use Young's modulus E= 205 GPa , Poisson's ratio v=0.3 and shear modulus G = 78.8 GPa. [6 marks] (ii) Using the values obtained in (i), determine the principal stresses...
Seeking structural engineering help. please answer the entire question, showing all steps. thank ...
seeking structural engineering help. please answer the entire
question, showing all steps. thank you very much!
The structural steel framing plan of the figure represents a floor system for a narrow commercial building. The floor is to support a 6 in. thick reinforced concrete slab, a live load of 150 psf and an additional future load of 20 psf. Use the Allowable Stress Design (as per the class reference materials) and ASTMA36 steel for all members, use 0.6 Fy as...
A wood beam (1) is reinforced on its lower surface by a steel plate (2) as...
A wood beam (1) is reinforced on its lower surface by a steel
plate (2) as shown in the figure. Dimensions of the cross section
are b 1 = 220 mm , d = 385 mm , b 2 = 190 mm , and t = 25 mm . The
elastic moduli of the wood and steel are E 1 = 12.5 GPa and E 2 =
200 GPa , respectively. The allowable bending stresses of the wood
and steel...
Question A-36 steel pipe with an outer diameter of 100 mm and an inner diameter of...
Question A-36 steel pipe with an outer diameter of 100 mm and an inner diameter of 80 mm subjected to loadings shown in Figure 1. The pipe is rigidly fixed at B and P - 150 kN. Given the yield stress, Oy -250 MPa and factor of safety, F.S. - 1.5 is used against yielding on this entire pipe. (a) For the stress state at the surface, construct the Mohr circle and determine: (1) the total stresses at surface of...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span ...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span 2500 mm with a 5 kN/m load. The cross-section of the beam is a composite section made from two steel plates attached to the top and bottom of a timber section. The top steel plate is 5 mm wide and 20 mm deep. The bottom steel plate is also 5 mm wide but 10 mm deep. The timber section is 50 mm...
A thick-walled steel cylinder with internal diameter = 16 mm and external diameter = 24 mm is sub...
A thick-walled steel cylinder with internal diameter = 16 mm and
external diameter = 24 mm is subjected to a gradually increasing
internal pressure P.
I. Using accurate formulation, determine the value
of P and sketch the distribution of radial, tangential and maximum
shear stresses when:
a. The material of the cylinder first commences to
yield.
b. Yielding progressed to mid-depth of the cylinder
wall (at D= 20 mm ).
c. The material of the cylinder suffers complete
collapse (fully...
Homework8 Name and types DUE: April ANOVA theory 17, 2019 1) Why can we not do a series of t-test...
Homework8 Name and types DUE: April ANOVA theory 17, 2019 1) Why can we not do a series of t-tests when comparing more than two groups? 2) For an ANOVA, in English, what is the null hypothesis? The alternative? What would it mean to reject the null? How is this different than when we reject the null in a t test? 3) If I told you I ran a three-way MANCOVA, what could you tell me about my design and...
Question a A beam of the cross section shown below is made of an elastic-plastic material for which the yield stress is 300 MPa. Find the plastic moment M, and the maximum elastic moment M Also determine the distribution of the residual stresses in the beam after the plastic moment M, is appliod and then reloaoed. 8 mm +1 90 mm 8 mm 130 mn 8 mm
Question a A beam of the cross section shown below is made of...
The term I/crefers to: O Design Modulus O Centered Moment of Inertia O Section Modulus O Modulus of Inertia Question 54 Normally beams that are short and carry large loads, especially those made of wood, are first designed to resist shear and then later checked against the allowable-bending-stress requirements. O True O False Question 55 For a relatively long beam, after designing for bending stress, one must check: That the beam doesn't weigh too much That the beam doesn't buckle...
Part A- Answer all questions (Total Marks for Part A: 120) Part A- Question 1 (Total Marks for Part A - Question 1: 24) A 140mm thick concrete slab is supported by a series of parallel 460UB82.1 steel beams at 2400mm centres. Assume there is sufficient bond between the steel beam and the concrete slab to enable the materials to act together as a composite unit Assume for steel E 200 GPa ? 280 MPa for concrete E-25 GPa ?...
Question 2 I (a) Using a 459 strain gauge rosette placed on a mild steel structure, the following strains were established from the measurements taken:£x = 75x10", Eyy =-115x10-6 = 210 10-6 and Yxy yy (i) Determine the corresponding normal stresses Ox and and shear stress txy. For mild steel, use Young's modulus E= 205 GPa , Poisson's ratio v=0.3 and shear modulus G = 78.8 GPa. [6 marks] (ii) Using the values obtained in (i), determine the principal stresses...
seeking structural engineering help. please answer the entire
question, showing all steps. thank you very much!
The structural steel framing plan of the figure represents a floor system for a narrow commercial building. The floor is to support a 6 in. thick reinforced concrete slab, a live load of 150 psf and an additional future load of 20 psf. Use the Allowable Stress Design (as per the class reference materials) and ASTMA36 steel for all members, use 0.6 Fy as...
A wood beam (1) is reinforced on its lower surface by a steel
plate (2) as shown in the figure. Dimensions of the cross section
are b 1 = 220 mm , d = 385 mm , b 2 = 190 mm , and t = 25 mm . The
elastic moduli of the wood and steel are E 1 = 12.5 GPa and E 2 =
200 GPa , respectively. The allowable bending stresses of the wood
and steel...
Question A-36 steel pipe with an outer diameter of 100 mm and an inner diameter of 80 mm subjected to loadings shown in Figure 1. The pipe is rigidly fixed at B and P - 150 kN. Given the yield stress, Oy -250 MPa and factor of safety, F.S. - 1.5 is used against yielding on this entire pipe. (a) For the stress state at the surface, construct the Mohr circle and determine: (1) the total stresses at surface of...
Question 1 (Total 100/3 Marks) Figure 1 (all units are mm) shows a simply supported beam of span 2500 mm with a 5 kN/m load. The cross-section of the beam is a composite section made from two steel plates attached to the top and bottom of a timber section. The top steel plate is 5 mm wide and 20 mm deep. The bottom steel plate is also 5 mm wide but 10 mm deep. The timber section is 50 mm...
A thick-walled steel cylinder with internal diameter = 16 mm and
external diameter = 24 mm is subjected to a gradually increasing
internal pressure P.
I. Using accurate formulation, determine the value
of P and sketch the distribution of radial, tangential and maximum
shear stresses when:
a. The material of the cylinder first commences to
yield.
b. Yielding progressed to mid-depth of the cylinder
wall (at D= 20 mm ).
c. The material of the cylinder suffers complete
collapse (fully...
Homework8 Name and types DUE: April ANOVA theory 17, 2019 1) Why can we not do a series of t-tests when comparing more than two groups? 2) For an ANOVA, in English, what is the null hypothesis? The alternative? What would it mean to reject the null? How is this different than when we reject the null in a t test? 3) If I told you I ran a three-way MANCOVA, what could you tell me about my design and...
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