Example 6: A rectangular concrete beam of width b = 600mm is limited by architectural considerations to a maximum total depth of h = 400mm. It must carry Mu= 540kN-m. Design the flexural reinforcements for this member, using compression steel if necessary. Allow 75mm to the center of the bars from the compression or tension face of the beam. Material strengths: fc' = 28MPa, fy =

Example 6: A rectangular concrete beam of width b = 600mm is limited by architectural considerations to a maximum total depth of h = 400mm. It must carry Mu= 540kN-m. Design the flexural reinforcements for this member, using compression steel if necessary. Allow 75mm to the center of the bars from the compression or tension face of the beam. Material strengths: fc' = 28MPa, fy =

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.1.2P

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USE NSCP 2010 A simply supported beam is reinforced with 4 – 28 mm ø at the bottomand 2 – 28 mm ø at the top of the beam. Steel covering to centroid ofreinforcement is 70 mm at the top and bottom of the beam. The beamhas a total depth of 400 mm and a widthof 300 mm. fc’ = 30 MPa, fy = 415 MPa. Balanced steel ratio ρb = 0.031.Compute the ultimate moment capacity of the beam in kN-m. Usereduction factor of 0.90
The rectangular doubly reinforcement stress concrete block with the arrangement of reinforcement of 2N28 bars on top and 3N28 bars on bottom. The modulus of elasticity are Ec =23,500MPa and Es = 200,000MPa. Dead load is 18KN/m and live load is 12KN/m. f' = 25MPa 800 IDE 730 N12 ligs (fsv.f-500MPa) Ast = 3N28 350 Span = 10m Figure 3 Calculate the combination load for the reinforcement concrete beam shown in Figure 3. Unit: KN/m with two decimal. 1.2G+1.5Q=w
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A beam has a width of 300 mm and an effective depth of 480 mm strength Pc= 34 MPa. Steel yield strength fy=415 MPa. The section is to be reinforced for tension only and the effective concrete cover is 70 mm. Deadload moment is 140 kN-m and the liveload moment is 180 kN-m. Use 2010 NSCP with t= 0.005. A. What is the governing steel ratio? B. What is the maximum number of bars needed for a 25mm diameter reinforcements? C. What is the minimum number of bars needed for a 25mm diameter reinforcements?
A beam cast monolithically has the following properties: bf=1200mm, t or hf = 110mm, bw=380mm and h=800mm. It is reinforced with 10D32mm grade 420MPa bars. Concrete strength is assumed to be 27.5MPa and the centroid of tension reinforcement is located 665mm from the outermost compression fiber. A. Determine maximum nominal moment to ensure tension controlled, kN-m. B. Calculate the balanced steel area, mm2. C. Calculate the balanced moment in kN-m.
I need the answer to the question in reinforced concrete
X = 165 Y = 40 Z = 25 D = 500
A W18 x 40 floor beam supports a 4-inch-thick reinforced concrete slab with an effective width b of 81 inches. Sufficient anchors are provided to make the beam fully composite. The 28-day compressive strength of the concrete is f,c = 4 ksi. a. Compute the moment of inertia of the transformed section. b. For a positive service load moment of 290 ft-kips, compute the stress at the top of the steel (indicate whether tension or compression), the stress at the bottom of the steel, and the stress at the top of the concrete.
a) For the rectangular section shown below the maximum allowable tensile stress in the concrete Fct = 3MPa. Assume an uncracked section and find the maximum moment the section can resist as well as the stress in the reinforcement for this moment Ec:= 30-GPa Es:= 200 GPa b:= 300 mm h := 520 mm d:= 460 mm 2 As 1470 mm := b As
A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with d-20-mm-dismeter bars and at the top with 2-16-mm bars. Concrete cover to bar centroid at the top is M0 mm and at the bottom is 70 mm. Use concrete strength r'e-21 MPa und steel yield strength fy 415 MPa for 20- mm bars and fy= 275 MPA for 16 mm bars Detenmine the design moment capacity n kN m of the beam in negative bending. A 40.06 O45.07 C. 42.70 D47.55
The T-section shown is subjected to a design ultimate moment of M = 180kN.m. Find the required area of reinforcement given a 10% redistribution of moments was applied in determining the moment. istic material strengths: concrete inforcement Width of flange Height of flange Width of web feu := 30-MPa fy:= 450-MPa bf:= 400-mm hf:= 100-mm bw := 200-mm d:= 350-mm Reinforcement Depth bf A bw d
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