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Determine flexural strength of the cross section shown in the figure. The concrete is f 3500...
Figure 2 shows a simply supported beam and the cross section at mid span. The beam...
Figure 2 shows a simply supported beam and the cross section at mid span. The beam supports a uniform service (unfactored) dead load consisting of its own weight plus 1.4 kips/ft and a uniform service (unfactored) live load of 1.5 kips/ft. The concrete strength is 3500 psi, and the yield strength of the reinforcement is 60,000 psi. The concrete is normal-weight concrete. For the midspan section shown in Figure 2, compute фМп and show that it exceeds Mu. WD 1.4...
NOTE Vn(min)= 12.8k Vn(Max)= 81.9k 2) Design the stirrups for the beam using f'4000 psi concrete and # 3 Grade 60 s...
NOTE
Vn(min)= 12.8k
Vn(Max)= 81.9k
2) Design the stirrups for the beam using f'4000 psi concrete and # 3 Grade 60 stirrups. a) Determine if and where no stirrups can be used in the beam. b) Provide 3 "zones" of stirrups: maximum permissible spacing near midspan, tightest spacing near the support and a transition zone 12 in f4000 psi d 16 in 24 ft #3 stirrups Normal weight concrete 3/4 in. max. aggregate 1.5 in. clear cover 2.69 in 3...
Based on tributary load analysis, the dead and live loads, wd and wų, respectively, acting on...
Based on tributary load analysis, the dead and live loads, wd and wų, respectively, acting on a beam in a vertical load resisting system are shown below. The concrete is normalweight with compressive strength f=5000 psi. Note that the given dead load includes the self-weight of the beam and slab. Section wp=1.2 kip/ft, wu=1.5 kip/ft be-45 inch 5 inch 1 30 inch B A 10 inch In=10 ft 1. Design and detail the beam for positive flexure at section A....
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinfo...
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinforcement of area, As, on the elevation (including connection at support) and cross section. Assume that 3 #8's are used for flexural reinforcement with 2-leg #4 stirrups for shear (spaced at 6 in on center) and 1.5-in cover (over the stirrups). [2 PT] Concentrated load height, h-16 in width, b-12 in; f' 5000 psi Support Elevation Cross Section 24. [9 PT]...
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinfo...
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinforcement of area, As, on the elevation (including connection at support) and cross section. Assume that 3 #8's are used for flexural reinforcement with 2-leg #4 stirrups for shear (spaced at 6 in on center) and 1.5-in cover (over the stirrups). [2 PT] Concentrated load height, h-16 in width, b-12 in; f' 5000 psi Support Elevation Cross Section 24. [9 PT]...
The simply supported beam shown spans 20 ft and, in addition to its own weight carries...
The simply supported beam shown spans 20 ft and, in addition to its own weight carries a uniformly distributed service dead load of 1.75 kips/ft and a uniformly distributed live load of 3.0 kips/ft. Five no. 9 bars running the full length of the beam arc used as flexural reinforcement. Assume f,-60,000 psi and fc4000 psi, No. 3 stirrups are used. a. Determine the theoretical spacing of stirrups at the critical section using the detailed expression for the shear strength...
reinforced concrete design , ACI code Shear Strength of Flexural Members Design for shear forces The...
reinforced concrete design , ACI code
Shear Strength of Flexural Members Design for shear forces The simply supported beam shown is subjected to ultimate (factored) distributed and concentrated loads 1. Determine the shear capacity of concrete at the critical section according to ACI318-14 detailed method in Table 22.5.5.1. Design the shear reinforcement and determine the locations on the beam shear force diagram where this shear reinforcement should be placed. 2. 3. Determine the locations within the beam where minimum shear...
2. A beam with the following cross section has to be designed to resist factored positive...
2. A beam with the following cross section has to be designed to resist factored positive moment demand, Mu, equal to 1500 kip-in. Due to architectural reasons, the dimensions of the section are pre-defined as below. Also, only #8 and #9 bars can be used as longitudinal reinforcement and #4 bars as transverse reinforcement. The specified cover is 2". The compressive strength of the concrete is 4000 psi and grade 60 is used for the steel bars. The cross section...
Problem 3 (5 points) A rectangular concrete beam of width b 24 in. is limited by architectural co...
Problem 3 (5 points) A rectangular concrete beam of width b 24 in. is limited by architectural considerations to a maximum total depth h - 17 in. It must carry a design moment demand, M 400 kips-ft. Design the flexural reinforcement for this member. Use compression steel if needed. The concrete material has compressive strength of fe- 4 ksi. The steel conforms to ASTM A615 Gr. 60. Select reinforcement to provide the needed areas and show a sketch of your...
A 15-ft solid concrete cantilever beam with a rectangular cross-section is shown below. It supports a...
A 15-ft solid concrete cantilever beam with a rectangular cross-section is shown below. It supports a load w = 2,150 lb/ft. The concrete has a tensile strength of 650 psi and a compressive strength of 6,000 psi. (a) Determine the maximum tensile and compressive stresses in the beam due to the applied load (b) Explain where failure would initiate in the solid concrete beam under the applied load. (c) Because the solid concrete beam is not adequate to carry the...
Figure 2 shows a simply supported beam and the cross section at mid span. The beam supports a uniform service (unfactored) dead load consisting of its own weight plus 1.4 kips/ft and a uniform service (unfactored) live load of 1.5 kips/ft. The concrete strength is 3500 psi, and the yield strength of the reinforcement is 60,000 psi. The concrete is normal-weight concrete. For the midspan section shown in Figure 2, compute фМп and show that it exceeds Mu. WD 1.4...
NOTE
Vn(min)= 12.8k
Vn(Max)= 81.9k
2) Design the stirrups for the beam using f'4000 psi concrete and # 3 Grade 60 stirrups. a) Determine if and where no stirrups can be used in the beam. b) Provide 3 "zones" of stirrups: maximum permissible spacing near midspan, tightest spacing near the support and a transition zone 12 in f4000 psi d 16 in 24 ft #3 stirrups Normal weight concrete 3/4 in. max. aggregate 1.5 in. clear cover 2.69 in 3...
Based on tributary load analysis, the dead and live loads, wd and wų, respectively, acting on a beam in a vertical load resisting system are shown below. The concrete is normalweight with compressive strength f=5000 psi. Note that the given dead load includes the self-weight of the beam and slab. Section wp=1.2 kip/ft, wu=1.5 kip/ft be-45 inch 5 inch 1 30 inch B A 10 inch In=10 ft 1. Design and detail the beam for positive flexure at section A....
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinforcement of area, As, on the elevation (including connection at support) and cross section. Assume that 3 #8's are used for flexural reinforcement with 2-leg #4 stirrups for shear (spaced at 6 in on center) and 1.5-in cover (over the stirrups). [2 PT] Concentrated load height, h-16 in width, b-12 in; f' 5000 psi Support Elevation Cross Section 24. [9 PT]...
23. For the concrete cantilever beam shown below (L=8 ft), draw the proper location and details for the flexural reinforcement of area, As, on the elevation (including connection at support) and cross section. Assume that 3 #8's are used for flexural reinforcement with 2-leg #4 stirrups for shear (spaced at 6 in on center) and 1.5-in cover (over the stirrups). [2 PT] Concentrated load height, h-16 in width, b-12 in; f' 5000 psi Support Elevation Cross Section 24. [9 PT]...
The simply supported beam shown spans 20 ft and, in addition to its own weight carries a uniformly distributed service dead load of 1.75 kips/ft and a uniformly distributed live load of 3.0 kips/ft. Five no. 9 bars running the full length of the beam arc used as flexural reinforcement. Assume f,-60,000 psi and fc4000 psi, No. 3 stirrups are used. a. Determine the theoretical spacing of stirrups at the critical section using the detailed expression for the shear strength...
reinforced concrete design , ACI code
Shear Strength of Flexural Members Design for shear forces The simply supported beam shown is subjected to ultimate (factored) distributed and concentrated loads 1. Determine the shear capacity of concrete at the critical section according to ACI318-14 detailed method in Table 22.5.5.1. Design the shear reinforcement and determine the locations on the beam shear force diagram where this shear reinforcement should be placed. 2. 3. Determine the locations within the beam where minimum shear...
2. A beam with the following cross section has to be designed to resist factored positive moment demand, Mu, equal to 1500 kip-in. Due to architectural reasons, the dimensions of the section are pre-defined as below. Also, only #8 and #9 bars can be used as longitudinal reinforcement and #4 bars as transverse reinforcement. The specified cover is 2". The compressive strength of the concrete is 4000 psi and grade 60 is used for the steel bars. The cross section...
Problem 3 (5 points) A rectangular concrete beam of width b 24 in. is limited by architectural considerations to a maximum total depth h - 17 in. It must carry a design moment demand, M 400 kips-ft. Design the flexural reinforcement for this member. Use compression steel if needed. The concrete material has compressive strength of fe- 4 ksi. The steel conforms to ASTM A615 Gr. 60. Select reinforcement to provide the needed areas and show a sketch of your...
A 15-ft solid concrete cantilever beam with a rectangular cross-section is shown below. It supports a load w = 2,150 lb/ft. The concrete has a tensile strength of 650 psi and a compressive strength of 6,000 psi. (a) Determine the maximum tensile and compressive stresses in the beam due to the applied load (b) Explain where failure would initiate in the solid concrete beam under the applied load. (c) Because the solid concrete beam is not adequate to carry the...
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