Consider the T-beam section below. The beam will not be subjected to any axial loads. The design will include #3 stirrups to resist shear. The desired shear capacity for the section is V₁ = 55,000 lbs. f = 4000 psi. fy= 60000 psi, and information for p, Ve, and Vs from AC1318-19 are provided below and attached. a. Compute the nominal shear strength provided by the concrete, V. Assume A, 2 Amin and 2 = 1 for normal weight concrete. What is the theoretical spacing required for the #3 stirrups? You do not need to check whether this fits any maximum criteria. b. sysintl Criteria Ay2 Amin Hds1000 Notes: #3 stirrups Ay
Consider the T-beam section below. The beam will not be subjected to any axial loads. The design will include #3 stirrups to resist shear. The desired shear capacity for the section is V₁ = 55,000 lbs. f = 4000 psi. fy= 60000 psi, and information for p, Ve, and Vs from AC1318-19 are provided below and attached. a. Compute the nominal shear strength provided by the concrete, V. Assume A, 2 Amin and 2 = 1 for normal weight concrete. What is the theoretical spacing required for the #3 stirrups? You do not need to check whether this fits any maximum criteria. b. sysintl Criteria Ay2 Amin Hds1000 Notes: #3 stirrups Ay
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Consider the T-beam section below. The beam will not be subjected to any axial loads. The design will include #3
stirrups to resist shear. The desired shear capacity for the section is V₁ = 55,000 lbs. f = 4000 psi. fy=
60000 psi, and information for p, Ve, and Vs from AC1318-19 are provided below and attached.
Compute the nominal shear strength provided by the concrete, V. Assume A, 2 Amin and 2 = 1 for
normal weight concrete.
What is the theoretical spacing required for the #3 stirrups? You do not need to check whether this fits any
maximum criteria.
a.
b.
Criteria
#3 stirrups
Ay ≥ Amin
Ay<Aymin
12 in-
22.5.5 Ve for nonprestressed members
22.5.5.1 For nonprestressed members, V, shall be calcu-
lated in accordance with Table 22.5.5.1 and 22.5.5.1.1
through 22.5.5.1.3.
Table 22.5.5.1-Vc for nonprestressed members
Ve
[22√7² + N = 0.0
b.d
6.4,
Either of:
4 in.
N
[82, 20. Yº JF + M. Jo, d
b_d
64,
21 in.
N
[82.10.)") √F: + M₂ Jo. d
6.4₂
3 in.
V
Notes:
1. Axial load, Nu is positive for compression and negative for tension.
2. V shall not be taken less than zero.
=
(a)
(b)
22.5.8.5.3 V, for shear reinforcement in 22.5.8.5.1 shall
be calculated by:
(c)
A f,d
(22.5.8.5.3)
S
where s is the spiral pitch or the longitudinal spacing of
the shear reinforcement, and A, is given in 22.5.8.5.5 or
22.5.8.5.6.
22.5.8.5.5 For each rectangular tie, stirrup, hoop, or
crosstie, A, shall be the effective area of all bar legs or wires
within spacing s.
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