Civil Engineering Reference
In-Depth Information
6.6.4 Ultimate bending moment
diagram—Exterior bay
Ultimate bending moment diagram - Exterior bay
2
20
11.1
1
3
2.2
-6.7
-15.6
-24.5
0
3.4
6.8
10.2
13.6
17
Exterior Bay 1-Foot Slab Strip, ft
Section
1
Section
2
Section
3
M
u1
= 2.9kipft
φ
b1_bond
M
n1b1
= 4.1kipft
M
u2
= 5kipft
φ
b2
M
n2
= 11.4kipft
M
u3
= 7kipft
φ
b3
M
n3
= 11.4kipft
6.6.5 Ultimate bending moment
diagram—Interior bay
This diagram shows that, for the interior bay, the same FRP reinforcement
design adopted for the exterior bay can be used.
20
5
11.1
4
6
2.2
-6.7
-15.6
-24.5
0
4
8
12
16
20
Interior bay 1-foot slab strip, ft
Section
4
Section
5
Section
6
M
u4
= 6.4kipft
φ
b3
M
n3
= 11.4kipft
M
u5
= 4.4kipft
φ
b2
M
n2
= 11.4kipft
M
u6
= 6.4kipft
φ
b3
M
n3
= 11.4kipft
6.7 STEP 5—CHECK CREEP-RUPTURE STRESS
6.7.1 Case 1—Exterior support
The stress level in the FRP reinforcement for checking creep rupture failure
is evaluated considering the total unfactored dead loads and the sustained
portion of the live load (20% of the total live load).
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