Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 365

Anchor Fastening Technical Guide , Edition 22
Table 13 — KH-EZ SS316 and KH-EZ C SS316 design information in accordance with CSA A23.3 Annex D 1
Design parameter Symbol Units
Nominal anchor diameter 1 / 4 3 / 8 1 / 2 A23.3
Nominal anchor diameter d a in . 0.25 0.375 0.5 ( mm ) ( 6.4 ) ( 9.5 ) ( 12.7 )
Effective embedment 2
h ef
in .
( mm )
1.19
( 30 )
1.93
( 49 )
1.49
( 38 )
1.92
( 49 )
2.55
( 65 )
1.56
( 40 )
2.20
( 56 )
3.26
( 83 )
Min . nominal embedment 2
h nom
in .
( mm )
1-5 / 8
( 41 )
2-1 / 2
( 64 )
2
( 51 )
2-1 / 2
( 64 )
3-1 / 4
( 83 )
2-1 / 4
( 57 )
3
( 76 )
4-1 / 4
( 108 )
Min . concrete thickness
h min
in .
( mm )
3-1 / 4
( 83 )
4 1 / 8
( 105 )
3-1 / 2
( 89 )
4
( 102 )
4 3 / 4
( 121 )
4 1 / 2
( 114 )
4 3 / 4
( 121 )
6 3 / 4
( 171 )
Critical edge distance
c ac
in .
( mm )
4.76
( 121 )
7.72
( 196 )
5.96
( 151 )
7.68
( 195 )
10.20
( 259 )
6.24
( 158 )
8.80
( 224 )
7.50
( 191 )
Minimum spacing at critical edge distance
s min , cac
in .
( mm )
1.5
( 38 )
2.25
( 57 )
3
( 76 )
Minimum edge distance
c min
in .
( mm )
1.5
( 38 )
1.75
( 44 )
Minimum spacing at minimum edge distance
for s >
in .
( mm )
3
( 76 )
Min . hole depth in concrete
h 0
in .
( mm )
2
( 51 )
2-7 / 8
( 73 )
2-1 / 4
( 57 )
2-3 / 4
( 70 )
3-1 / 2
( 89 )
2-5 / 8
( 67 )
3-3 / 8
( 86 )
4-5 / 8
( 117 )
Min . specified ultimate strength
f uta
psi
( N / mm2 )
153,000
( 1055 )
139,300
( 961 )
120,100
( 828 )
Effective tensile stress area
A se , N
in2
( mm2 )
0.040
( 25.8 )
0.094
( 60.6 )
0.172
( 111.0 )
Steel embed . material resistance factor for reinforcement
ф s
-
0.85
8.4.3
Resistance modification factor for tension , steel failure modes 3
R
-
0.70
D . 5.3
Resistance modification factor for shear , steel failure modes 3
R
-
0.65
Factored steel resistance in tension
N sar
lb
( kN )
3,595
( 16.0 )
7,810
( 34.7 )
12,315
( 54.8 )
D . 6.1.2
Factored steel resistance in shear
V sar
lb
( kN )
1,010
( 4.5 )
2,405
( 10.7 )
2,645
( 11.8 )
D . 7.1.2
Factored steel resistance in shear , seismic
V sar , eq
lb
( kN )
665
( 3.0 )
2,405
( 10.7 )
2,645
( 11.8 )
Coeff . for factored conc . breakout resistance , uncracked concrete
k c , uncr
-
10.0
11.3
Coeff . for factored conc . breakout resistance , cracked concrete
k c , cr
-
7.1
8.8
Modification factor for anchor resistance , tension , uncracked conc . 4
ψ c , N
-
1.0
D . 6.2.6
Anchor category
-
-
2
3
1
2
Concrete material resistance factor ф c
- 0.65 8.4.2
Ref
3.3.7
Resistance modification factor for tension and shear , concrete failure modes , Condition B 5 R - 0.85 0.75 1.00 0.85
Factored pullout resistance in 20 MPa uncracked concrete 6
N pr , uncr
lb
( kN )
NA
D . 6.3.2
Factored pullout resistance in 20 MPa cracked concrete 6
N pr , cr
lb
( kN )
340
( 1.5 )
580
( 2.6 )
1,060
( 4.7 )
1,555
( 6.9 )
NA
D . 6.3.2
Factored seismic pullout resistance in 20 MPa cracked concrete 6
N pr , eq
lb
( kN )
225
( 1.0 )
580
( 2.6 )
1,060
( 4.7 )
1,555
( 6.9 )
NA
D . 6.3.2
1 Design information in this table is taken from ICC-ES ESR-3027 , tables 2 and 4 , and converted for use with CSA A23.3 Annex D . 2 See figure 1 of this document . 3 The KH-EZ SS316 and KH-EZ C SS316 is considered a ductile steel element as defined by CSA A23.3 Annex D section D . 2 . 4 For all design cases , ψ c , N
= 1.0 . The appropriate coefficient for breakout resistance for cracked concrete ( k c , cr ) or uncracked concrete ( k c , uncr
) must be used .
5 For use with the load combinations of CSA A23.3 Chapter 8 . Condition B applies where supplementary reinforcement in conformance with CSA A23.3 section D . 5.3 is not provided , or where pullout or pryout strength governs . For cases where the presence of supplementary reinforcement can be verified , the resistance modification factors associated with Condition A may be used .
6 For all design cases , ψ c , P
= 1.0 . NA ( not applicable ) denotes that this value does not control for design . See section 4.1.4 of ESR-3027 for additional information .
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.3.7 KWIK HUS-EZ SS316 SCREW ANCHOR Hilti , Inc . 1-800-879-8000 | en español 1-800-879-5000 | www . hilti . com | Hilti ( Canada ) Corporation | www . hilti . ca | 1-800-363-4458
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