Civil Engineering Reference
In-Depth Information
F
i g u r e
8.10 Transfer diaphragm forces at left side.
Summing at grid line B:
V
B
=−
3155 4
.
+
(
5250
+
550
)
=
2644 6
.
lb
V
D
2644 6
20
.
B
TD
v
=
=
=−
132 2
.
plfnegativeunitshea
rrfromgrid lineA
.2
to B
B
Transfer diaphragm TD3 (see Fig. 8.11):
The disrupted chord force and collector forces at
the edge of the opening are applied to transfer diaphragm TD3 as shown in the figure.
∑
M
D
=
0
1
90
V
A
=
[
1783 350
. ()
−
282 80
( ]
=
740 1
.
lb
V
D
740 1
25
.
A
TD
v
=
=
=−
29 6
.
plfnegativeunitshear
A
∑
M
A
=
0
1
90
V
E
=
[
1783 340
. ()
−
282 10
( ]
=
761 24
.
lb
V
D
761 24
25
.
v
=
E
TD
=
=+
30 45
.
plfpositiveunitshea
r
E
Search WWH ::
Custom Search