The cross section of a rectangular beam having wodht b and height h is shown in part a of a figure 1. For reasons unknown to the beam designer, it is planned to add structural projections of width b/9 and height d to the top and the bottom of the beam(see part b of figure 1)For what values of d is the section modulus S of the beam increased?For what values is it decreased?Hint: Express the section modulus S of the modified section as function of d.then divide S by the section modulus of the orignal section,and plot the result as a function of d/h. The plot will indicate for which values od d, in reference to h, the new section modulus is increased/decreased. Problem 1 [30pts]The cross section of a rectangular beam havingwidth b and height h is shown in part a of Figure1. For reasons unknown to the beam designer, itis planned to add structural projections of widthb/9 and height d to the top and bottom of thebeam (see part b of Figure 1).b9.dhhFor what values of d is the section modulus S ofthe beam increased? For what values is itdecreased?b(b)Hint: Express the section modulus S of themodified section as a function of d. Then divideS by the section modulus of the original section,and plot the result as a function of d/h. The plotwill indicate for which values of d, in referenceto h, the new section modulus is(a)Figure 1. O 2013 Cengage LearningEngineering. All Rights Reservedincreased/decreased.

Section modulus on any section is given by Z=Iy Where I=Area Moment of inertia about the axis of…

Answered: Problem 1 [30pts] The cross section of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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The cross section of a rectangular beam having wodht b and height h is shown in part a of a figure 1. For reasons unknown to the beam designer, it is planned to add structural projections of width b/9 and height d to the top and the bottom of the beam(see part b of figure 1)
For what values of d is the section modulus S of the beam increased?For what values is it decreased?
Hint: Express the section modulus S of the modified section as function of d.then divide S by the section modulus of the orignal section,and plot the result as a function of d/h. The plot will indicate for which values od d, in reference to h, the new section modulus is increased/decreased.

Problem 1 [30pts]
The cross section of a rectangular beam having
width b and height h is shown in part a of Figure
1. For reasons unknown to the beam designer, it
is planned to add structural projections of width
b/9 and height d to the top and bottom of the
beam (see part b of Figure 1).
b
9.
d
h
h
For what values of d is the section modulus S of
the beam increased? For what values is it
decreased?
b
(b)
Hint: Express the section modulus S of the
modified section as a function of d. Then divide
S by the section modulus of the original section,
and plot the result as a function of d/h. The plot
will indicate for which values of d, in reference
to h, the new section modulus is
(a)
Figure 1. O 2013 Cengage Learning
Engineering. All Rights Reserved
increased/decreased.

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