A simply supported rectangular beam withb = 14 in. and d = 17.5 in. and with No. 3 Grade-60 stirrups at s = 8 in., spans 14 ft and supportsa total factored uniform load of 6.5 kips/ft, in-cluding its own dead load. It is built of 4000-psi light-weight concrete and contains two No. 9Grade-60 bars that extend 5 in. past the centers ofthe supports at each end. Does this beam satisfyACI Code Section 9.7.3.8.3? If not, what is thelargest size bars that can be used?

Solution Given Data b= 14 ind= 17.5 ins=8 inTotal factored uniform load= 6.5 kips/ft

Answered: A simply supported rectangular beam…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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22
- Determine the allowable ultimate axial load on a rectangular short tied column 12 by 18 in. (300 by 450 mm) reinforced with 6 No. 9 (6 x 28 mm) bars. Ties are No. 3 (10 mm diameter) and are spaced at 12 in. (300 mm). Given: f 4 ksi (28 MPa),Sy = 60 ksi (420 MPa). Reinforced concrete Design I
GROUP A B3 Given: 3 Concrete, f'c= 24MPA. Steel, fy= 420MPA. Superimposed dead load, WsD= 4.5kN/m:. SLAB 1 Live load, WL= 2.5kN/m:. Perimeter wall weight= 21KN/m. All columns are 300x600mm. Design the slab and beam B2 B3 5.00m 5.00m 5.00m B) 2) 6.50m B1 6.50m B2 1.00m B2 B1
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Compute the nominal moment capacity of the following precast T (Tee) beam. Check for all the ACI code requirements. Flange (effective) width = 25 in. Web width = 14in. Flange thickness = 2.0 in. Total thickness = 24.0 in. Effective depth, d = 21 in. Compressive strength of concrete used for flange = 5,000 psi Compressive strength of concrete used for web = 4000 psi Reinforcement consists of 3- #9 bars with a yield strength of 60,000 psi and 2- #9 bars with a yield strength of 40,000 psi. (A total of 5 bars and the equivalent bar diameter is 9/8 of an inch).
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A rectangular cross section of a beam is under the bending moment of 60 kips-ft. Determined the Maximum compression and tension stress in the concrete and tensile stress in the rebar. The section is uncracked. b-15 in, h=30 in, d= 28 in f=4000 psi, Ec-3,600,000 psf fy= 60,000 psi, Es-29,000,000 psf Rebar= 3 -No. 6 h -As
The simply supported I beam shown is to carry a uniformly distributed service dead and live load with a total of 8.02 kN/m over its 12.19 m spam, in addition to its own weight. Normal concrete having a density of 24 kN/m³ will be used. The beam will be pretensioned (with a draped/parabolic multiple 7wire strands) at the neutral axis at the supports and varying to an eccentricity at midspan equal to 132mm. The prestress force Pi is 752 kN. Time dependent losses due to shrinkage, creep and relaxation is 15% of P₁. Find the flexural stresses at midspan and support sections under initial and final conditions. NA 12.190 304,8mm 304.8mm N.A. 132 nm Midspan cross section Stal Ic=4.99 x 10⁹ mm4 Ac= 114 x 10³ mm² S₁ S₂ 16.4 x 106 mm³ r² = Ic/Ac = 44 x 10³ mm3
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AT-Beam has the following properties: bf = 750 mm, bw = 275 mm, d 560 mm, t = 115 mm. Concrete compressive strength fe 21 MPa and steel yield strength fy 415 MPa. T-Beam is under factored moment load of 720 kN-m. Locate the compression block under balanced condition from the extreme compression fiber.
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