TbIStrt 9 O 1. An unreinforced rectangular concrete beam was subjected to three-point bending. The beam...
2. A rectangular beam, 400 x 600 mm gross dimension, is cast using a concrete strength of fc 30 MPa, reinforced with 5-25 mm diameter steel bar at the effective depth of 500 mm. If is subjected to a moment, M 130 kN-m. Determine the following: Magnitude of the bending moment that cracks the singly-reinforced beam section. (10 pts) b. For the computed cracking moment, determine the maximum compressive stress in the concrete and the stress in the tension steel....
1. Reinforced Rectangular Concrete Beam The reinforced concrete beam shown is subjected to a bending moment of 200 kip ft. Knowing that the modulus of elasticity for the concrete and the steel are respectively Ec= 3.75 X 10 psi and Es = 30 x 10 psi, determine the tensile stress in [ksh] that develops in the steel bars. 20 in 1 in diameter 72.5 in 12 in-
A flanged beam simply supported at both ends as shown in the figure below. Determine the steel reinforcements and links required for the beam subject to bending moment and shear forces ood Swt Center-to-center distance btw supports Section Elevation Design parameters: Beam overall depth, h = 750 mm Beam breadth, b = 300 mm c/c distance btw supports = 10050 mm Width of LHS support, Sw1 400 mm Width of RHS support, Sw2 850 mm Slab thickness, h c/c distance...
03(a) A reinforced concrete beam is acted on by a positive bending moment. reinforcement consists of 4 bars of 28 mm diameter. The modulus of elasticity is E 25 GPa for the concrete and E-200 GPa for the steel. The allowable stresses for the concrete and steel are ơ.-9.2 MPa and ơ.-135 MPa, respectively. Determine the maximum permissible positive bending moment. (10 marks) 625 mm 4 bars 28 mm -300 mm Figure Q3(a) 03(b) A simply supported beam that is...
A reinforced concrete beam with dimensions (300 mm * 800 mm) subjected to a service dead load moment (MD=500 kN.m) and a service live load moment (ML = 400 kN.m). Design the section as a double reinforced section (the dimensions can't be increased). Place the compression reinforcement at 65 mm from the compression face. Compressive strength of concrete; fe 28 MPa, yielding stress of reinforcement; fy= 420 MPa. Assume 30 mm to be used in the tension (two layers), 26...
A reinforced concrete beam with dimensions (300 mm * 800 mm) subjected to a service dead load moment (MD= 500 kN.m) and a service live load moment (ML = 400 kN.m). Design the section as a double reinforced section (the dimensions can't be increased). Place the compression reinforcement at 65 mm from the compression face. Compressive strength of concrete; fc = 28 MPa, yielding stress of reinforcement; fy= 420 MPa. Assume 30 mm to be used in the tension (two...
A beam whose cross-section is shown in the figure is subjected to a bending moment M inclined at 0 = 70° from the z axis. a) Locate the orientation of the neutral axis B and draw this axis on the figure b) Calculate the maximum flexural tensile stress Omax,T and the maximum flexural compressive stress Omax.c in the beam and indicate at which points in the section these occur. M= 2 Nm D e Z 20 mm A B 60...
Design a rectangular reinforced concrete cantilever balcony beam of 2.5m span for a high-rise apartment building to satisfy the ultimate limit state requirements based on the following descriptions: Characteristic compressive strength of concrete at 28 days ) 32MPa - Depth of beam is restricted to 400mm, width can be considered as 200mnm " Permanent load (G) on the beam is 12kN/m . Imposed load (Q) is 5kN/m " Building is situated in Brisbane " Allowable total deflection is span/125 Check...
A Class 1 post-tensioned rectangular concrete beam is simply supported over a 10 m span. The characteristic imposed load consists of a single 50 kN force at midspan. The characteristic concrete strength is 50 N/mm2 and the unit weight of concrete is 25 kN/m. The beam is of a uniform section (Fig. 5) having the following properties: b- 250 mm; h 500 mm. Assume the concrete strength at transfer is 40 N/mm2 and there is no prestressed loss. (1) Determine...
simply supported reinforced concrete beam of rectangular section is hung on the left end by a 400mm square post working in tension, as shown in the figure below. The beam supports a uniform dead load (DL) gf 100 KN/m (excluding its own weight) and upiform live load LL) of 40KN/m. The beam is reinforced with 025 longitudinal rebars with 40mm cleat cover to the stirrups. Material properties: fy 420 MPa, fe 25 MPa. Beam dimension b 400mm and h 600mm....