The simply supported beam shown below carries its own weight, a uniformly distributed live load of 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U- shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and the top row has three #6 bars. Let f' =4,000 psi and f, = 60 ksi. The cross-sectional area of a #6 bar is 0.44 in.². WL = 300 lbs/ft 10 ft. PD * 10 ft. 17 in. 3 in. OO 8 #6 bars tot b O 6 in. O 14 in. tot For the beam section show in the figure, determine the minimum width b (rounded up an integer value) which will result in a tension-controlled beam. (Ans: b = 5 in.) 9 in.

The simply supported beam shown below carries its own weight, a uniformly distributed live load of 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U- shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and the top row has three #6 bars. Let f' =4,000 psi and f, = 60 ksi. The cross-sectional area of a #6 bar is 0.44 in.². WL = 300 lbs/ft 10 ft. PD * 10 ft. 17 in. 3 in. OO 8 #6 bars tot b O 6 in. O 14 in. tot For the beam section show in the figure, determine the minimum width b (rounded up an integer value) which will result in a tension-controlled beam. (Ans: b = 5 in.) 9 in.

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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Methods to Determine Vertical Stress

The load applied to the soil is transferred to the underground. The presence of water at soil pores and solid grains above the soil are the primary components that are responsible for the effective load transfer. Due to the load acting, the internal component of the soil or the underground formations undergoes deformations or a tectonic shift. The amount of deformation depends upon the amount of load acting on the soil surface, which indeed, depends on the weight of everything present above the soil. Due to this, the underground soil element develops internal stresses which try to resist the tectonic changes.

Question

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The simply supported beam shown below carries its own weight, a uniformly distributed live load
of 300 lbs/ft, and a concentrated dead load PD at midspan. The cross-section of the beam is U-
shaped. It has two rows of reinforcing bars at the bottom. The bottom row has five #6 bars and the
top row has three #6 bars. Let f' =4,000 psi and f, = 60 ksi. The cross-sectional area of a #6 bar
is 0.44 in.².
WL = 300 lbs/ft
10 ft.
PD
*
10 ft.
17 in.
3 in.
OO
8 #6 bars
tot
b
O
6 in.
O
14 in.
tot
For the beam section show in the figure, determine the minimum width b (rounded up an
integer value) which will result in a tension-controlled beam. (Ans: b = 5 in.)
9 in.

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