A 11.1 m simply supported singly reinforced beam has a width of B= 31 cm and a height H=59 cm. Concrete compressive strength, f'c=30 MPa Steel Yield Strength of longitudinal bars, fy=420 MPa, Steel Yield Strength of transverse bars, fyt = 280 MPa, Unit weight of concrete, c= 23 kN/m³. Steel cover of the beam =7 cm It is desired that the capacity of the beam to be at balanced condition. If the structural engineer wants the optimization ratio of the design moment and capacity to be 0.9, calculate the maximum value of the live load in kN/m to meet such condition Use NSCP2015

A 11.1 m simply supported singly reinforced beam has a width of B= 31 cm and a height H=59 cm. Concrete compressive strength, f'c=30 MPa Steel Yield Strength of longitudinal bars, fy=420 MPa, Steel Yield Strength of transverse bars, fyt = 280 MPa, Unit weight of concrete, c= 23 kN/m³. Steel cover of the beam =7 cm It is desired that the capacity of the beam to be at balanced condition. If the structural engineer wants the optimization ratio of the design moment and capacity to be 0.9, calculate the maximum value of the live load in kN/m to meet such condition Use NSCP2015

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A cast iron tube 3m long is completely filled with concrete and used as a vertical strut. if the external diameter of the tube is 450mm and the wall is 35mm thick, determine the maximum compressive load the composite strut can support if the stress in the concrete is not exceed 2N/mm2. By how much should the strut shorten under this load. For cat iron EA= 100GN/m? and for concrete Eb = 10GN/m?. %3D
-10 In prestressed concrete we select one of the following materials strengths: Select one: out of O a. fy = 1725 N/m2, fc= 30 N/m2 question O b. fc: = 50 N/m2, fy = 410 N/m2 O c. fy = 40 N/m2. fc = 1725 N/m2 O d. fc = 40 N/m2. fy= 1100 N/m2
Use f'c = 30 MPa and fy = 415 MPa. The unit weight of concrete is 24 kN/m³ . The floor of a cantilever floor system is made up of a 150mm thick concrete slab (cast monolithically with beam) and the beams have widths of 300 mm, a total depth of 560 mm, and are to be reinforced with 5-Ø28 mm bars. The center-to-center spacing of beams is 4 m. The cantilever floor system is also built using 4m cantilever reinforced beams as supports. a) Find the maximum service live load (kPa) that the current floor design can support. b) Suppose that the floor will need to carry a superimposed service dead load of 2 kPa and service live load of 7.2 kPa, will the existing floor design be adequate? If not, redesign the beams (find the appropriate number of Ø28-mm rebars and provide a final sketch). Use cc = 40 mm, stirrup diameter of 10 mm, and nominal maximum aggregate size of 20 mm.
Ultimate Design Single concrete
A rectangular cantilever beam has a width of 250mm and an effective depth of 480mm. It is reinforced with 7-25mm bars. The beam is carrying a uniformly distributed dead load of 15kN/m. The compressive strength of the concrete is 21MPa and the yield strength of the steel is 415MPa. The depth of the concrete stress block is?
Only correct answer with solution
The maximum compression in a concrete beam fiber is 6.2 MPa. The depth of the neutral axis is 124 mm and the characteristic compressive strength of the concrete is 25 N/mm?. Determine the effective curvature of the beam,
H.W.5: For the simply supported beam shown below reinforced by 4025 bars (fy= 420 MPa), the concrete strength (f= 21 MPa) evaluate the following: 1- Check the actual flexural stresses in concrete and steel if the span length equal to (4 m), dead load 8 kN/m including self-weight of the beam, live load equal to 10 kN/m. 2- The length of beam span that makes the concrete in tension face starts to crack. 3- The actual stress in concrete and steel if the span length of the beam is equal to 7 m. WI= 10 kN/m Wd=8 kN/m 420 mm 500 mm 마 350 mm
A rectangular reinforced concrete beam has a length of 14 m is simply supported atboth ends. The width of beam is 350mm and the overall depth is 550 mm. Determine the area of the steel reinforcements if the beam is to carry a DL = 15kN/m and LL =18kN/m. The concrete strength fc = 25 and steel yield fy = 400 ��. Use 60 mm concretecover.