Civil Engineering Reference
In-Depth Information
Allowable stress design, ASCE 7-05 Section 12.4.3.2
5. (1 + 0.14
S
DS
)
D
+
H
+
F
+ 0.7 Ω
o
Q
E
6. (1 + 0.105
S
DS
)
D
+
H
+
F
+ 0.525 Ω
o
Q
E
+ 0.75
L
+ 0.75(
L
r
or
S
)
8. (0.6 - 0.14
S
DS
)
D
+ 0.7 Ω
o
Q
E
+
H
Another issue that has not been fully addressed by applicable codes and standards
and has caused considerable confusion is the required load combination to be used for
the design of the connections between the discontinuous walls and frames to the sup-
porting elements. The connections must be adequate to transmit the forces for which
the discontinuous element was designed. These special seismic loads are not required
for the discontinuous shear wall that is being supported. The connection between the
shear wall and supporting member only needs to be designed for the loads associated
with the design of the shear wall and not the special load combinations.
The shear wall configuration at grid line 1, shown in Figs. 11.18 and 11.19, is a stan-
dard two-story segmented shear wall system. The walls do not extend across the full
F
i g u r e
11.19 Shear wall system at grid line 1.
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