
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Subject reinforced concrete design please solve part C and D

Transcribed Image Text:P01: For the continuous floor system in Fig 1 below, calculate the following:
a. be for the beam T-section at section A-A and B-B,
b. Design moment for Doubly Reinforced Rectangular beam section (Fig. 4) at section C-C.
c. Design moment for Singly reinforced T- beam section (Fig. 2) at section A-A. (See Hint)
d. Design moment for Doubly reinforced T- beam section (Fig. 3) at section B-B. (Optional - for
further knowledge)
Given:
a.
bw = 1 ft;
b.
f'c = 4000 psi and fy = 60 ksi.
c. Central floor beam spanning in horizontal direction.
d. The floor system has a uniform spacing between beams.
HINT: For a typical floor system, mid-span sections are subjected to positive bending. Section A-A has a
large compression zone; hence compression steel may not be required for additional moment strength in
this case. Assuming section will include No. 3 or No. 4 stirrups (compression steel in the section is not
shown in the figure which is placed for reinforcement continuity requirements), d= 24 in- 3.5 in= 20.5 in
and d= 24 in - 2.5 in = 21.5 in).
7
Slab thickness= 5 in.
24 ft
Figure 1 Continuous Floor System
10 ft
10 ft

Transcribed Image Text:3 No. 5 bars
be= 72 in.
6 No. 7 bars
12 in.
I 3.5 in.
Figure 2 T-Beam section at A-A section
13 No. 8 bars
2 No. 8 (No. 25)
b₂ = 72 in.
6 No. 10 (No. 32)
3 No. 7 bars
12 in.
I = 2.5 in.
Is
5. in.
12"
Figure 3 T-Beam Section at B-B section
2/2
-2.5 in.
3 No. 5 bars
24"
Figure 4 Rectangular Beam Section at C-C
24 in.
5 in.
24 in.
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