Civil Engineering Reference
In-Depth Information
Table 4-3 Flat Plate or Flat Slab with Spandrel Beams
End Span
Interior Span
1
4
5
2
3
End Span
Interior Span
1
Exterior
Negative
2
Positive
3
First Interior
Negative
4
Positive
5
Interior
Negative
Slab Moments
Total Moment
0.30 M
o
0.50 M
o
0.70 M
o
0.35 M
o
0.65 M
o
Column Strip
0.23 M
o
0.30 M
o
0.53 M
o
0.21 M
o
0.49 M
o
Middle Strip
0.07 M
o
0.20 M
o
0.17 M
o
0.14 M
o
0.16 M
o
Note:
(1) All negative moments are at face of support.
(2) Torsional stiffness of spandrel beams
β
t
> 2.5. For values of less than 2.5,
exterior negative column strip moment increases to (0.30 - 0.03
β
t
β
t
) M
o
.
Table 4-4 Flat Plate or Flat Slab with End Span Integral with Wall
End Span
Interior Span
1
2
3
4
5
End Span
Interior Span
1
Exterior
Negative
2
Positive
3
First Interior
Negative
4
Positive
5
Interior
Negative
Slab Moments
Total Moment
0.65 M
o
0.35 M
o
0.65 M
o
0.35 M
o
0.65 M
o
Column Strip
0.49 M
o
0.21 M
o
0.49 M
o
0.21 M
o
0.49 M
o
Middle Strip
0.16 M
o
0.14 M
o
0.16 M
o
0.14 M
o
0.16 M
o
Note: All negative moments are at face of support.
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