
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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An RC (f'c=21 MPa) rectangular beam has a width of 260mm and an overall depth of 470mm. The concrete clear cover is 40mm, the stirrup size is 10mm, and the size of the longitudinal reinforcement is 20mm. Steel yield strength for both the flexure and shear bars is 415MPa. Determine the design shear strength (kN) of the section if the spacing of the shear reinforcement is 50mm.
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- (QI-B) Put (True) or (False) for the following, 1. In doubly reinforcement of RC beams. it the provided steel reinforcement ratio should be more than the maximum reinforcement ratio as specified in ACI 318-19 requirements of singly beam. 2. In working strength method, allowable tensile stress in (280 MPa) yield strength deformed steel bars used in reinforced cement concrete is (140 MPa). 3. In ultimate strength method, the factor of safety for bending strength is more than the shear strength of the beam, when the beam designed as under-reinforced section. 4. As ACI 318-19, the minimum nominal cover specified for beam is 25 mm? 5. Live loads are always taken 100% when it used in calculations of long Rerm deflection of reinforced concrete beams.arrow_forward1. The details of the cantilever beam are shown below. Use f'c = 28 MPa, fy = 415 MPa, and fyt = 275 MPa. Notes:• All dimensions are in millimeters.• Column reinforcement not shown for clarity• Column and beam are neither exposed to weather nor contact with the ground.• Analyze as singly reinforce beam only.• Neglect the weight of the beam.• Concrete isnormal weight and reinforcements are galvanized. d. What is the flexural capacity of the beam at face of support in kNm? e. What is theshear capacity of the beam at face of support in kN? f. What is the maximum Pu (kN) that can be applied at the free end of the beam consideringflexure and shear? g. What is the requiredminimum cut length (mm) of each stirrup? Roundyour answer to nearest safe25 mm.arrow_forwardDesign the reinforcement of a rectangular beam to resist a dead load moment of 200kN.m (including its own weight) and a live load moment of 300kN.m. The beam is limited in size to 350mm by 600mm overall depth. Steel covering from centroid of bars to outermost fiber is 100mm for both tension and compression reinforcement. Use fc'=27.5Mpa, fy = 414MPa,20mm barsA. As'= 7 of 20mm and As=14 of 20mmB. As' = 9 of 20mm and As=18 of 20mmC. As'= 5 of 20mm and As=10 of 20mmD. As' = 3 of 20mm and As=6 of 20mm Please provide neat and clear solutions Note: kindly check below answerarrow_forward
- Do not use chatgpt and pls don't provide image solution otherwise I will downvote youarrow_forwardfeu = 40 MPa Cover = 3smm fy = 500 MPa fy = 250 MPa Preferred link size = 10mm Question 2 Design the reinforcement for the following one-way slab: Slab thickness,h= %3D 160 mm Design Mid-span Moment, M = 35 kNm Preferred bar sizes = main bar: 12mm; distribution bar: 10mm Q2a. Calculate the steel area required (in mm2per m width). Q2b. Provide main bars and distribution bars.arrow_forwarda simply supported beam 300mm wide, 500mm deep and spans 5.7m supports a service super imposed dead load of 8kN/m and service live load of 7kN/m. concrete strength f'c=21MPa and steel yield strength fy=415MPa. concrete cover to bar centroid is 70mm. determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015.arrow_forward
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- 5. The beam shown is reinforced for positive moment with three epoxy-coated #11 bars. The bars terminate at the center of the supports. Neglecting beam weight (concentrated loads are very heavy), determine if the required development length is satisfied. Assume As required = 4.55in², 2 in. clear cover on all sides of the longitudinal reinforcement, normal weight concrete, #3 stirrups @12 in o.c., f'c = 5000 psi and fy = 60,000 psi. 8 ft | Pu 20 ft Pu 8 ft ge2 of 56 30 in b=14in. ed 5/15/2020 As = 3-#11arrow_forward1. A two span beam subjected to shear and flexure only is reinforced as follows: SECTION: TOP BARS @ MIDSPAN: 2-⌀20mm @ FACE OF SUPPORTS: 5-⌀20mm SECTION: BOTTOM BARS @ MIDSPAN: 3-⌀20 mm @ FACE IF SUPPORTS: 2-⌀20 mm Given: Stirrup diameter, ds = 10 mm Concrete f'c = 21 MPa Steel rebar fy = 415 MPa Stirrup fy = 275 MPa Beam size b x h = 270 mm x 450 mm Assume all bars laid out in single layer. Calculate the following: a. Design Moment strength of section at midspan for positive bending = ______ kN·m (nearest whole number)arrow_forwardQUESTION 1A concrete floor slab measuring 6 m x 3 m is simply supported on one side brick load-bearing walls along the 6 m sides. The concrete slab is 200 mm thick and reinforced at the bottom as follows. a. Main reinforcement (short span i.e the bars are parallel to the short span), Y12, shape code 34 @ 125 mm centre to centre,b. Distribution reinforcement (long-span i.e the bars are parallel to the long span), Y 10, shape code 20 @ 300 mm centre to centre,c. Concrete cover, 30mm,d. Concrete strength, 40MPa. Draw the reinforcement layout for this slab, in plan and section, indicating all thereinforcement and necessary information required by the contractor. Calculate and indicate the number of bars required on your drawing. You do not need to calculate the bar lengths and the curtailment. Neat drawing pleasearrow_forward
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