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Frame 21

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TABLE 13-2 STATICALLY INDETERMINATE RECTANGULAR FRAMES
The directions of the reaction forces are shown in the figures of the configurations. The
signs of moments are shown in the moment diagrams. A bending moment is indicated as
positive when it causes tension on the inner side of the member and compression on the
outer side. Opposing moments are negative. The formulas in the table give the magnitudes
of the forces and moments.
e = h/L
Definitions
β = Ih (horizontal beam)/Iv (vertical members)
Configuration
Moment Diagram
Important Values
1.
L −a
a
RB = W
L
L
3W a L − a
H A = HB =
2h L 2βe + 3
3W a L − a
MC = M D =
2L 2βe + 3
W a(L − a) 4βe + 3
MK =
2L
2βe + 3
2.
RA = RB = W
RA = W
h
L
H A = H B = 12 W
MC = M D = 12 W h
TABLE 13-2 Statically Indeterminate Rectangular Frames
681
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