Installation Guide

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Hilti PROFIS Engineering 3.0.68
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Concrete - Apr 5, 2021
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6
4/5/2021
4.2 Pryout Strength (Concrete Breakout Strength controls)
V
cpg
= k
cp
[(
A
Nc
A
Nc0
)
y
ec,N
y
ed,N
y
c,N
y
cp,N
N
b
]
ACI 318-08 Eq. (D-31)
f
V
cpg
³
V
ua
ACI 318-08 Eq. (D-2)
A
Nc
see ACI 318-08, Part D.5.2.1, Fig. RD.5.2.1(b)
A
Nc0
= 9 h
2
ef
ACI 318-08 Eq. (D-6)
y
ec,N
=
(
1
1 +
2 e
'
N
3 h
ef
)
£
1.0 ACI 318-08 Eq. (D-9)
y
ed,N
= 0.7 + 0.3
(
c
a,min
1.5h
ef
)
£
1.0 ACI 318-08 Eq. (D-11)
y
cp,N
= MAX
(
c
a,min
c
ac
,
1.5h
ef
c
ac
)
£
1.0 ACI 318-08 Eq. (D-13)
N
b
= k
c
l
√
f
'
c
h
1.5
ef
ACI 318-08 Eq. (D-7)
Variables
k
cp
h
ef
[in.] e
c1,N
[in.] e
c2,N
[in.] c
a,min
[in.]
1 2.375 0.000 0.000 ∞
y
c,N
c
ac
[in.]
k
c
l
f
'
c
[psi]
1.000 3.563 17 1 4,000
Calculations
A
Nc
[in.
2
] A
Nc0
[in.
2
]
y
ec1,N
y
ec2,N
y
ed,N
y
cp,N
N
b
[lb]
105.58 50.77 1.000 1.000 1.000 1.000 3,935
Results
V
cpg
[lb]
f
concrete
f
V
cpg
[lb] V
ua
[lb]
8,184 0.700 5,729 460
5 Combined tension and shear loads
b
N
b
V
z
Utilization
b
N,V
[%] Status
0.510 0.080 5/3 35 OK
b
NV
=
b
z
N
+
b
z
V
<= 1