Civil Engineering Reference
In-Depth Information
U1
27.25'
L1
8 @ 19.55' = 156.38'
Member U1-L1
+1.00
FIGURE E5.5g
are constructed by using the method of sections and locating unit loads at
appropriate locations.
40
(
36
/
28
)
−
a
p
=
1
−
40
=
100 ft,
⎛
⎝
⎞
⎠
=
h
p
=
a
p
+
2
(
40
)
28
(a
p
+
35.3 ft,
40
)
2
28
2
+
28
a
p
+
45
◦
−
tan
−1
33.7
◦
,
β
p
=
40
=
(a
p
+
40
)
2
28
2
cos
(
β
p
)
=
L
p
=
+
118.8 ft.
Considering Section 1-1 in Figure E5.6: with unit load at L2 and
taking moments about L2, the force in U1-U2
1.51
(compression direction to balance reaction moment about L2) (
Figure E5.7).
=[−
(
4
/
6
)(
2
)(
40
)
]
/
35.3
=−
h
p
2
1
U2
L
p
U1
B
p
36'
28'
L3
P
O
L1
L2
1
2
a
p
6 @ 40' = 240'
FIGURE E5.6
