Homework Answers
![For I- section b = 16 in bw asin. Av = 4 = 0.goint (single legged] [Stirrups I sa bin d = 32-2.5 = 29.5in. dun d (vc+Vs) Ve=](http://img.homeworklib.com/questions/64fd5630-f952-11eb-9ea5-e51632f275f6.png?x-oss-process=image/resize,w_560)
![factored load Wo = 1.2x 4 = u.8Klft PL = 1.6x20= 32kleach) factored shear force at each end (V) 18] +32+32 =752k. 2 SF @ B =](http://img.homeworklib.com/questions/67c6a120-f952-11eb-99c7-63d8d9a4f256.png?x-oss-process=image/resize,w_560)
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TOIMII. (10 points) Compute V. for the sections shown. Use fc' = 4,000 psi and fy=...
Problem 2 (25 points) A rectangular reinforced concrete beam has a width b-15 inches and effecti...
Problem 2 (25 points) A rectangular reinforced concrete beam has a width b-15 inches and effecti Concrete com ve depth d-24 inches. orcement fy- 60 ksi. imate load - 6 k/R pressive strength fe -4,000 psi and yield stress of steel reinf The beam is simply supported and subjected to a uniformly distributed ulti that includes the weight of the beam. Span is 28 feet. Assume interior exposure. s and show the proposed shear reinforcement Design the beam for shear...
ZOOM+ Draw shear force diagram [V/6) of the beam shown below Choose No. 3 stirrups and...
ZOOM+ Draw shear force diagram [V/6) of the beam shown below Choose No. 3 stirrups and calculate the ACI code-cmplying spacings. 4500 psi; fyt 40 ksi. D = 1.8 kips/ft L 1.4 kips/ft 17.5 14 25 ft Draw shear force diagram 〔V ofthe beam shown below Choose No. 3 stirrups and calculate the ACI code-cmplying spacings. 4000 psi ; fyt-40 ksi. D 1.5 kips/ft L1.8 kips/ft 17.5 22 ft 20 20
Problem 4 Load and Load Combinations (50pts) With fy 60,000 psi and fc' 4000 psi, select...
Problem 4 Load and Load Combinations (50pts) With fy 60,000 psi and fc' 4000 psi, select the tensile reinforcing for the edge L beam AB for the floor system shown in Figure 4.1. The cross section of the floor system is shown in Figure 4.2. Note that LI = 6ft and L2 = 12ft. Assume simple supports at sides A and B. The live load is to be 80 psf, while the dead load in addition to the concrete's weight...
Question 1: Calculate Ig and Icr for cross sections (a) and (b) shown in Figure (1). Given: fc=4,000 psi, Normal-Weight...
Question 1: Calculate Ig and Icr for cross sections (a) and (b) shown in Figure (1). Given: fc=4,000 psi, Normal-Weight Concrete fy=60,000 psi, and Es 29 X 105 psi. 30 in. (762 mm) 3 in. 3 No. 10 3 No, 9 2을 in. 12 in. (304,8 mm) in. -10 in.- (b) (a) 15 in. (wu (533.4 mm)
Question 1: Calculate Ig and Icr for cross sections (a) and (b) shown in Figure (1). Given: fc=4,000 psi, Normal-Weight Concrete fy=60,000 psi,...
For the beam shown use f-3000 psi and fy 60000 psi. 1- Compute the effective flange...
For the beam shown use f-3000 psi and fy 60000 psi. 1- Compute the effective flange width 2- Compute фМ, for the positive and negative moment regions and check ACI requirements for both sections. At the support, the bottom bars are in one layer and at mid-span, the # 8 bars are in the bottom layer and the # 7 bars are in a second layer. Assume 2.5 in concrete cover (from outside face of concrete to the center of...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level moment M= 200 ft-k, use the procedures from Chapter 2 to find (20 pts) the following using linear-elastic analysis procedures and using transformed section a. properties: compressive stress in the concrete (fc) tension stress in the bottom steel (fs) compressive stress in the top steel (f's) What is the applicable moment of inertia of the concrete section if the (10 pts) service level moment...
4. Determine the flexural strength (фМп) and shear strength (OVn) of the given section below. The RC beam in Engineering Building is reinforced with 4#10 for tensile reinforcement at the bottom,...
4. Determine the flexural strength (фМп) and shear strength (OVn) of the given section below. The RC beam in Engineering Building is reinforced with 4#10 for tensile reinforcement at the bottom, 2#4 for compressive reinforcement at the top, and stirrups with #3@ 9" on center. (fc 6 ksi, fy 60 ksi for top and bottom reinforcement, and fyt -40 ksi for stirrups): Case 1: t- 3 in (20 points) and Case 2: t- 10 in (20 points) . 14" 6...
For Problems 1 and 2, design rectangular sections for the beams. Loads and Density values are...
For Problems 1 and 2, design rectangular sections for the beams.
Loads and Density values are shown. Beam weights are not included
in the loads shown. Show sketches of cross sections, including bar
sizes, arrangement, and spacing. Assume concrete weighs 150
lb/ft3, fy = 60,000 psi, and fc′ =4000 psi, unless given
otherwise.
2. Design a cantilever beam. The loading cases are shown in Figure 2: Wp = 3 k/ft, w, = 1 kft MITIMIZ 12f- Use p= 0.1852 Figure...
1. A rectangular beam with b 16 in., d-17 in., and h 20 in. has a clear span of 24 ft. as shown b...
1. A rectangular beam with b 16 in., d-17 in., and h 20 in. has a clear span of 24 ft. as shown below. The beam has 1 ft. of bearing at each end, so for analysis purposes it is treated as a 25 ft. simple span (to center of bearing at each end). The beam supports an unfactored concentrated live load of P-65 kips. The beam is reinforced with 6-#10 longitudinal bars and #4 stirrups. Material strengths are fc-4,000,...
Concrete design Problem #2: Determine the appropriate shear reinforcement required for the beam shown (spacing of...
Concrete design
Problem #2: Determine the appropriate shear reinforcement required for the beam shown (spacing of stirrups). Do not consider different loading cases for live loads and the dead load shown includes the beam's weight. Assumere 4000 psi, fy-60000 psi, and use # 3 U-shaped stirrups Note: Divide the beam into segments, 36" each where appropriate. 20k () 30k(L) 0-4 255 sy 5 #10
Problem 2 (25 points) A rectangular reinforced concrete beam has a width b-15 inches and effecti Concrete com ve depth d-24 inches. orcement fy- 60 ksi. imate load - 6 k/R pressive strength fe -4,000 psi and yield stress of steel reinf The beam is simply supported and subjected to a uniformly distributed ulti that includes the weight of the beam. Span is 28 feet. Assume interior exposure. s and show the proposed shear reinforcement Design the beam for shear...
ZOOM+ Draw shear force diagram [V/6) of the beam shown below Choose No. 3 stirrups and calculate the ACI code-cmplying spacings. 4500 psi; fyt 40 ksi. D = 1.8 kips/ft L 1.4 kips/ft 17.5 14 25 ft Draw shear force diagram 〔V ofthe beam shown below Choose No. 3 stirrups and calculate the ACI code-cmplying spacings. 4000 psi ; fyt-40 ksi. D 1.5 kips/ft L1.8 kips/ft 17.5 22 ft 20 20
Problem 4 Load and Load Combinations (50pts) With fy 60,000 psi and fc' 4000 psi, select the tensile reinforcing for the edge L beam AB for the floor system shown in Figure 4.1. The cross section of the floor system is shown in Figure 4.2. Note that LI = 6ft and L2 = 12ft. Assume simple supports at sides A and B. The live load is to be 80 psf, while the dead load in addition to the concrete's weight...
Question 1: Calculate Ig and Icr for cross sections (a) and (b) shown in Figure (1). Given: fc=4,000 psi, Normal-Weight Concrete fy=60,000 psi, and Es 29 X 105 psi. 30 in. (762 mm) 3 in. 3 No. 10 3 No, 9 2을 in. 12 in. (304,8 mm) in. -10 in.- (b) (a) 15 in. (wu (533.4 mm)
Question 1: Calculate Ig and Icr for cross sections (a) and (b) shown in Figure (1). Given: fc=4,000 psi, Normal-Weight Concrete fy=60,000 psi,...
For the beam shown use f-3000 psi and fy 60000 psi. 1- Compute the effective flange width 2- Compute фМ, for the positive and negative moment regions and check ACI requirements for both sections. At the support, the bottom bars are in one layer and at mid-span, the # 8 bars are in the bottom layer and the # 7 bars are in a second layer. Assume 2.5 in concrete cover (from outside face of concrete to the center of...
2.5" 2#7 fc= 4,000 psi fy= 60,000 psi n 8 5#11 3" 18" For service level moment M= 200 ft-k, use the procedures from Chapter 2 to find (20 pts) the following using linear-elastic analysis procedures and using transformed section a. properties: compressive stress in the concrete (fc) tension stress in the bottom steel (fs) compressive stress in the top steel (f's) What is the applicable moment of inertia of the concrete section if the (10 pts) service level moment...
4. Determine the flexural strength (фМп) and shear strength (OVn) of the given section below. The RC beam in Engineering Building is reinforced with 4#10 for tensile reinforcement at the bottom, 2#4 for compressive reinforcement at the top, and stirrups with #3@ 9" on center. (fc 6 ksi, fy 60 ksi for top and bottom reinforcement, and fyt -40 ksi for stirrups): Case 1: t- 3 in (20 points) and Case 2: t- 10 in (20 points) . 14" 6...
For Problems 1 and 2, design rectangular sections for the beams.
Loads and Density values are shown. Beam weights are not included
in the loads shown. Show sketches of cross sections, including bar
sizes, arrangement, and spacing. Assume concrete weighs 150
lb/ft3, fy = 60,000 psi, and fc′ =4000 psi, unless given
otherwise.
2. Design a cantilever beam. The loading cases are shown in Figure 2: Wp = 3 k/ft, w, = 1 kft MITIMIZ 12f- Use p= 0.1852 Figure...
1. A rectangular beam with b 16 in., d-17 in., and h 20 in. has a clear span of 24 ft. as shown below. The beam has 1 ft. of bearing at each end, so for analysis purposes it is treated as a 25 ft. simple span (to center of bearing at each end). The beam supports an unfactored concentrated live load of P-65 kips. The beam is reinforced with 6-#10 longitudinal bars and #4 stirrups. Material strengths are fc-4,000,...
Concrete design
Problem #2: Determine the appropriate shear reinforcement required for the beam shown (spacing of stirrups). Do not consider different loading cases for live loads and the dead load shown includes the beam's weight. Assumere 4000 psi, fy-60000 psi, and use # 3 U-shaped stirrups Note: Divide the beam into segments, 36" each where appropriate. 20k () 30k(L) 0-4 255 sy 5 #10
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