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Question #2 (20 points) A (a) A Composite column made of reinforced concrete was constructed on...
The column shown is made by filling a steel pipe with concrete. The concrete has an...
The column shown is made by filling a steel pipe with concrete. The concrete has an Elastic Modulus of Ec-3.800ks1 and a cross-sectional area of Ac-80 in2 the steel pipe has an Elastic Modulus of Est 29,000 ksi and a cross- sectional area of Ag-11 in2. If the column has a length of L = 10 ft and is subjected to a load of P 280 kip, what is the stress in the concrete? Express your answer in psi, to...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus of elasticity is 3x106 psi for concrete and 29x106 psi for steel. Find the tensile stress in rebars and maximum compressive stress in concrete under an external bending moment of (a) 80 kip.in and (b) 240 kip.in. Given the compressive strength of concrete fe' = 3 ksi and yield stress of rebars fy = 60 ksi, discuss the state of crack in concrete and...
Name: 2. A rectangular 14 x 18 in. column is reinforced with six No. 1 below....
Name: 2. A rectangular 14 x 18 in. column is reinforced with six No. 1 below. The concrete compressive strength, 5,000 psi 0 rebars as sh and the steel yield strength, = 60,000 psi. ) Calculate the axial load d carrying capacity of the column dPn, assuming concentre of the loading (b) If the shape of the column is changed to circular (without changing the concrete rea) with spiral reinforcement, calculate the increase in load carrying capacity o the column....
Problem 16 (16%) A 24 in x 24 in square reinforced concrete column consists of PCC...
Problem 16 (16%) A 24 in x 24 in square reinforced concrete column consists of PCC and steel rebar. The rebar are oriented parallel to the longitudinal dimension of the column. The properties of each component are provided in the table below: Material % of Composite (by vol.) Modulus of Elasticity Density Failure Stress Steel Rebar Dispersed Phase) 4% 29 x 106 psi 490 lb/ft3 36 x 103 psi PCC (Matrix Phase) 96% 3.37 x 10° psi 150 lb/ft3 3.5...
Reinforced concrete Problem #1 (40 points): A beam with x-section shown in the figure is made...
Reinforced concrete
Problem #1 (40 points): A beam with x-section shown in the figure is made out of concrete with compressive strength fc = 4000 psi and the steel reinfrocemnt is of Grade 60 (fy 60000psi). Determine 1 The maximum compressive stress in the concrete f and the tensils stress in the steel , if the section is subjected to a bending moment of 130 ft-k (assume n 8) N.A._ 23" 23-х 4 #10 (5.06 in. 3" 18"
CONS272 Exam 2 S2018 Name 3. A composite section is composed of an HP 12x63 that...
CONS272 Exam 2 S2018 Name 3. A composite section is composed of an HP 12x63 that is centrally encased in an 18x18 concrete section. The concrete compressive strength and steel yielding strength are 4,000 psi and 36,000 psi, respectively. Area of HP 12x63 section is 18.4 in2. The section is subjected to an axial compressive load of 800 kips. Assume both materials deform equally, compute the stress developed in the steel and the concrete. Assume allowable compressive strengths for concrete...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength of fc 30 MPa, reinforced with 5-25 mm diameter steel bar at the effective depth of 500 mm. If is subjected to a moment, M 130 kN-m. Determine the following: Magnitude of the bending moment that cracks the singly-reinforced beam section. (10 pts) b. For the computed cracking moment, determine the maximum compressive stress in the concrete and the stress in the tension steel....
Reinforced concrete 2 For the section in Problem i) determine the area of steel such that...
Reinforced concrete
2 For the section in Problem i) determine the area of steel such that the depth of the equivalent rectangular concrete stress distribution (block) is 4", and ii) determine the nominal moment strength and capacity if the steel area is 25% higher than balanced steel condition. Assume d 23.5", f.-3,000 psi, and f 60,000 psi. Hole 5-88 8 16
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented p...
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented parallel to the longitudinal dimension of the column. The properties component are provided in the table below PCC (Matrix Phase 95% 20 GPa 24 Mg'm 20 MPa Material Steel Rebar 5% 200 GPa 7.8 Mg/m (Dis Phase % of Composite(by vol.) Modulus of Elasticity Density Failure Stress 250 MPa Determine the following: (a) (3%) Modulus of elasticity of...
2061 8 in. CROSS-SECTION Concrete colums are constructed with reinforcing steel in them to make them...
2061 8 in. CROSS-SECTION Concrete colums are constructed with reinforcing steel in them to make them stronger and more ductile. The reinforcing bars are designated by size, with the size being the diameter in eights of an inch. For example, a #8 bar is 8/8 inch in diameter. A 8 inch square concrete column is constructed with eight #8 bars. A 60000 pound load is applied to this column. The modulus of elasticity of the reinforcing steel is 29x106 psi,...
The column shown is made by filling a steel pipe with concrete. The concrete has an Elastic Modulus of Ec-3.800ks1 and a cross-sectional area of Ac-80 in2 the steel pipe has an Elastic Modulus of Est 29,000 ksi and a cross- sectional area of Ag-11 in2. If the column has a length of L = 10 ft and is subjected to a load of P 280 kip, what is the stress in the concrete? Express your answer in psi, to...
Problem 2. A concrete beam is reinforced by three steel rebars placed as shown. The modulus of elasticity is 3x106 psi for concrete and 29x106 psi for steel. Find the tensile stress in rebars and maximum compressive stress in concrete under an external bending moment of (a) 80 kip.in and (b) 240 kip.in. Given the compressive strength of concrete fe' = 3 ksi and yield stress of rebars fy = 60 ksi, discuss the state of crack in concrete and...
Name: 2. A rectangular 14 x 18 in. column is reinforced with six No. 1 below. The concrete compressive strength, 5,000 psi 0 rebars as sh and the steel yield strength, = 60,000 psi. ) Calculate the axial load d carrying capacity of the column dPn, assuming concentre of the loading (b) If the shape of the column is changed to circular (without changing the concrete rea) with spiral reinforcement, calculate the increase in load carrying capacity o the column....
Problem 16 (16%) A 24 in x 24 in square reinforced concrete column consists of PCC and steel rebar. The rebar are oriented parallel to the longitudinal dimension of the column. The properties of each component are provided in the table below: Material % of Composite (by vol.) Modulus of Elasticity Density Failure Stress Steel Rebar Dispersed Phase) 4% 29 x 106 psi 490 lb/ft3 36 x 103 psi PCC (Matrix Phase) 96% 3.37 x 10° psi 150 lb/ft3 3.5...
Reinforced concrete
Problem #1 (40 points): A beam with x-section shown in the figure is made out of concrete with compressive strength fc = 4000 psi and the steel reinfrocemnt is of Grade 60 (fy 60000psi). Determine 1 The maximum compressive stress in the concrete f and the tensils stress in the steel , if the section is subjected to a bending moment of 130 ft-k (assume n 8) N.A._ 23" 23-х 4 #10 (5.06 in. 3" 18"
CONS272 Exam 2 S2018 Name 3. A composite section is composed of an HP 12x63 that is centrally encased in an 18x18 concrete section. The concrete compressive strength and steel yielding strength are 4,000 psi and 36,000 psi, respectively. Area of HP 12x63 section is 18.4 in2. The section is subjected to an axial compressive load of 800 kips. Assume both materials deform equally, compute the stress developed in the steel and the concrete. Assume allowable compressive strengths for concrete...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength of fc 30 MPa, reinforced with 5-25 mm diameter steel bar at the effective depth of 500 mm. If is subjected to a moment, M 130 kN-m. Determine the following: Magnitude of the bending moment that cracks the singly-reinforced beam section. (10 pts) b. For the computed cracking moment, determine the maximum compressive stress in the concrete and the stress in the tension steel....
Reinforced concrete
2 For the section in Problem i) determine the area of steel such that the depth of the equivalent rectangular concrete stress distribution (block) is 4", and ii) determine the nominal moment strength and capacity if the steel area is 25% higher than balanced steel condition. Assume d 23.5", f.-3,000 psi, and f 60,000 psi. Hole 5-88 8 16
A 200 mm x 300 The of each mm square reinforced concrete column consists of PCC and steel rebar rebar are oriented parallel to the longitudinal dimension of the column. The properties component are provided in the table below PCC (Matrix Phase 95% 20 GPa 24 Mg'm 20 MPa Material Steel Rebar 5% 200 GPa 7.8 Mg/m (Dis Phase % of Composite(by vol.) Modulus of Elasticity Density Failure Stress 250 MPa Determine the following: (a) (3%) Modulus of elasticity of...
2061 8 in. CROSS-SECTION Concrete colums are constructed with reinforcing steel in them to make them stronger and more ductile. The reinforcing bars are designated by size, with the size being the diameter in eights of an inch. For example, a #8 bar is 8/8 inch in diameter. A 8 inch square concrete column is constructed with eight #8 bars. A 60000 pound load is applied to this column. The modulus of elasticity of the reinforcing steel is 29x106 psi,...
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