Civil Engineering Reference
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i g u r e
7.8 Transfer wall, member force diagrams, strut forces.
All the applicable gravity loads should be included in the calculation of the over-
turning forces with the appropriate load factors and load combinations outlined in
ASCE 7-05 Section 2.3 or 2.4. The chord and boundary member force diagrams are plot-
ted using the method described in Chap. 3 and are shown on the right of Fig. 7.7. For
loading in the longitudinal direction (strut action), the free body of the wall is shown in
Fig. 7.8.
F
v
=
1
unit wall shearbetween upperand lowerchords
1
L
wall
FF
L
+
v
=
1
2
unit wall shearbelow lowerchord
2
wall
TC
Fh
+
11
Fh
==
22
overturningforce DL no
(
ttincludedfor this example)
L
wall
Figures 7.9, 7.10, and 7.11 show that solving the discontinuity issues across the verti-
cal offset not only is challenging, but also can become very involved and time consuming.
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