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12 in 4 in 18 10 ft 10 ft 10ft 10ft Problem #3 Determine the required...
A floor system (Figure 2) consists of a 3 in. concrete slab supported by continuous T...
A floor system (Figure 2) consists of a 3 in. concrete slab
supported by continuous T beams with a span L=24 ft, and 47 in. on
centers distance between beams. Web dimensions, as determined by
the negative-moment requirements at the supports are bw=11 in. and
d=20 in. Use concrete clear cover of 2 in. Determine the tensile
steel of the T-beam that is required at mid-span to resist a
factored positive moment of Mu=530 kip-ft if fc’=3,000 psi and
fy=60,000...
Problem 2 Design a rectangular reinforced concrete beam to resist a total design moment Mu of...
Problem 2 Design a rectangular reinforced concrete beam to resist a total design moment Mu of 765 ft-kips (this includes moment due to the weight of the beam). The beam size is limited to 15 in. maximum width and 30 in. maximum overall depth. Use fc,-3000 psi and/S-60,000 psi. If compression steel is required, make d'-2.5 in.
15 points 9. A rectangular concrete beam of width b=24 in. is limited by architectural considerations...
15 points 9. A rectangular concrete beam of width b=24 in. is limited by architectural considerations to a maximum total depth h=16 in. It must carry a total factored load moment Mu 400 k-ft. Design the flexural reinforcement for this member, using compression steel if necessary. Allow 3-in, to the center of the bars from the compression or tension face of the beam. Material strengths are fy=60 ksi and fc=4 ksi. Select reinforcement to provide the needed areas, complete necessary...
Concrete design Problem #1: Design a rectangular beam section, i.e. select b, d, h, and the...
Concrete design
Problem #1: Design a rectangular beam section, i.e. select b, d, h, and the required area of tension steel, A, at mid-span for a 22 ft-span simply supported beam that support its own weight, a superimposed service dead load of 1.25 kip/ft, and a uniform service live load of 2 kip/ft. Start by assuming the self-weight of the beam W-410 lbs/ft, b-0.7d, and use fc4500 psi and fy-60, 000 psi Note: Provide a detailed sketch for the final...
Problem 1. (40 pts) Here is a design for a beam as shown in Figs Check...
Problem 1. (40 pts) Here is a design for a beam as shown in Figs Check if this section can resist the following loading conditions in the beam according to ACI-318. Use fc -4000 psi and fy - 60,000 psi. Assume that the clear cover is 1.5" (typical) for all and the vertical spacing between #8 bars is 1 inch. Both End (L Center (L2) #8 bars #8 Stirrup #3@ 8" 8#8 bars 20 in Stirrup: 6# 8 bars Pu=15...
A rectangular beam made using concrete of fc' = 6000 psi and steel with fy= 60...
A rectangular beam made using concrete of fc' = 6000 psi and steel with fy= 60 ksi. The beam has a width B=20 in and a total depth of 20 in with an effective depth d=17.5 in. The tensile steel consists of 4 #11 bars at the bottom side. a) Determine the maximum service load moment that can be resisted without stressing the concrete above 0.45fc' or the steel above 0.4fy. b) Calculate the nominal flexural moment capacity of the...
10. A beam cross-section is limited to the size shown below. Determine the required area of...
10. A beam cross-section is limited to the size shown below. Determine the required area of reinforcement for service load moments Mp-430 ft-kip and M 175 ft-ki ksi. Note that the beam self weight is already included in the dead load moment. Assume that c 0.6c for the singly-reinforced part of the section (for your initial guess). Hint: first calculate the nominal moment resisted by the concrete section without compression steel. Check the strength only p.f -4,000 psi and f,-60...
A rectangular concrete beam measures 12 inches wide and has a depth of 26 inches. The...
A rectangular concrete beam measures 12 inches wide and has a depth of 26 inches. The centroid of the tension rebars is located 4 inches from the tension surface of the beam. Use fy = 60 ksi f’c = 3 ksi, compressive failure strain of concrete = 0.003. (A) Find the required tension rebars As to carry Mu = 5,700 kips-in. Show that the steel ratio does not meet the ACI requirements. (B) What can you do to meet ACI...
Problem 1 Reinforced Concrete T-Flanged Sections (50 pts.) You are required to analyze and design...
Problem 1 Reinforced Concrete T-Flanged Sections (50 pts.) You are required to analyze and design the propped cantilever t-section from HM 4 but for shear only. Draw shear V and moment M diagrams for uniformly distributed load throughout the 30ft span and equally concentrated loads at 10ft and 30ft. Recall that the connection at the left joint N1 is fixed. The connection at 20ft N3 is a roller. The right end node N2 is a free end. Use a concrete...
I designed and detailed the beam in problem 3 as you see. Redesign the reinforced concrete...
I designed and detailed the beam in problem 3 as you see.
Redesign the reinforced concrete beam of problem 3, If the value of
factored bending moment increased to 1,600 k.ft where the section
needs to be designed as a doubly reinforced beam.
3) Design and detail the reinforced concrete beam shown below if it is subjected to a factored bending moment of 1,100 k.ft f'=4,800psi fx=60 ksi. Include skin steel. 36" 15" 2#6 36 24 kino f's = 4800...
A floor system (Figure 2) consists of a 3 in. concrete slab
supported by continuous T beams with a span L=24 ft, and 47 in. on
centers distance between beams. Web dimensions, as determined by
the negative-moment requirements at the supports are bw=11 in. and
d=20 in. Use concrete clear cover of 2 in. Determine the tensile
steel of the T-beam that is required at mid-span to resist a
factored positive moment of Mu=530 kip-ft if fc’=3,000 psi and
fy=60,000...
Problem 2 Design a rectangular reinforced concrete beam to resist a total design moment Mu of 765 ft-kips (this includes moment due to the weight of the beam). The beam size is limited to 15 in. maximum width and 30 in. maximum overall depth. Use fc,-3000 psi and/S-60,000 psi. If compression steel is required, make d'-2.5 in.
15 points 9. A rectangular concrete beam of width b=24 in. is limited by architectural considerations to a maximum total depth h=16 in. It must carry a total factored load moment Mu 400 k-ft. Design the flexural reinforcement for this member, using compression steel if necessary. Allow 3-in, to the center of the bars from the compression or tension face of the beam. Material strengths are fy=60 ksi and fc=4 ksi. Select reinforcement to provide the needed areas, complete necessary...
Concrete design
Problem #1: Design a rectangular beam section, i.e. select b, d, h, and the required area of tension steel, A, at mid-span for a 22 ft-span simply supported beam that support its own weight, a superimposed service dead load of 1.25 kip/ft, and a uniform service live load of 2 kip/ft. Start by assuming the self-weight of the beam W-410 lbs/ft, b-0.7d, and use fc4500 psi and fy-60, 000 psi Note: Provide a detailed sketch for the final...
Problem 1. (40 pts) Here is a design for a beam as shown in Figs Check if this section can resist the following loading conditions in the beam according to ACI-318. Use fc -4000 psi and fy - 60,000 psi. Assume that the clear cover is 1.5" (typical) for all and the vertical spacing between #8 bars is 1 inch. Both End (L Center (L2) #8 bars #8 Stirrup #3@ 8" 8#8 bars 20 in Stirrup: 6# 8 bars Pu=15...
10. A beam cross-section is limited to the size shown below. Determine the required area of reinforcement for service load moments Mp-430 ft-kip and M 175 ft-ki ksi. Note that the beam self weight is already included in the dead load moment. Assume that c 0.6c for the singly-reinforced part of the section (for your initial guess). Hint: first calculate the nominal moment resisted by the concrete section without compression steel. Check the strength only p.f -4,000 psi and f,-60...
Problem 1 Reinforced Concrete T-Flanged Sections (50 pts.) You are required to analyze and design the propped cantilever t-section from HM 4 but for shear only. Draw shear V and moment M diagrams for uniformly distributed load throughout the 30ft span and equally concentrated loads at 10ft and 30ft. Recall that the connection at the left joint N1 is fixed. The connection at 20ft N3 is a roller. The right end node N2 is a free end. Use a concrete...
I designed and detailed the beam in problem 3 as you see.
Redesign the reinforced concrete beam of problem 3, If the value of
factored bending moment increased to 1,600 k.ft where the section
needs to be designed as a doubly reinforced beam.
3) Design and detail the reinforced concrete beam shown below if it is subjected to a factored bending moment of 1,100 k.ft f'=4,800psi fx=60 ksi. Include skin steel. 36" 15" 2#6 36 24 kino f's = 4800...
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