Civil Engineering Reference
In-Depth Information
0.5"
3"
2"
1"
P
FIGURE E9.7
T
B
=
T
+
T
Q
=
20
+
3.60
=
23.6 kips
T
B
A
b
=
23.6
(
0.6
)
=
σ
bt
=
39.3
≤
44.0 ksi OK.
The tensile stress range, including prying stress, is
60
(
1.18
)
(
4
)
0.6
17.7
0.6
Δσ
bt
=
=
=
29.5 ksi
Since
T
Q
T
%
3.60
20
(
100
)
=
=
18%
≤
30%
the allowable tensile stress range is 31.0 ksi
≥
29.5 ksi OK.
9.3.4.3.5 Axial Member Splices
A common axial member bolted splice involves the use of lap joints on the mem-
ber elements as shown in
Figure 9.10g
.
The bolted connection is designed as a
slip-resistant connection, often including a review of bearing stresses in case of
joint failure by slippage. Splices located in the center of truss members must
