Product Technical Guides : US-EN Anchor Fastening - August 2021 | Page 229

Anchor Fastening Technical Guide , Edition 22
Table 45 — Steel factored resistance for CA rebar 1 CSA-G30.18 Grade 400 2
Rebar size 10M
15M
20M
25M
30M
Tensile 3
N sa lb ( kN )
Shear 4
V sa lb ( kN )
7,245
4,035
( 32.2 )
( 17.9 )
14,525
8,090
( 64.6 )
( 36.0 )
21,570
12,020
( 95.9 )
( 53.5 )
36,025
20,070
( 160.2 )
( 89.3 )
50,715
28,255
( 225.6 )
( 125.7 )
1 See Section 3.1.8 to convert design strength value to ASD value . 2 CSA-G30.18 Grade 400 rebar are considered ductile steel elements . 3 Tensile = A se , N
Ф s f uta
R as noted in CSA A23.3 Annex D
4 Shear = A se , V
Ф s
0.60 f uta R as noted in CSA A23.3 Annex D .
3.2.5
Table 46 — Load adjustment factors for 10M rebar in uncracked concrete 1 , 2 , 3
10M Rebar uncracked concrete
Spacing factor in tension
ƒ AN
Edge distance factor in tension
ƒ RN
Spacing factor in shear 4
ƒ AV
┴ Toward edge
ƒ RV
Edge distance in shear
⃦ To edge
ƒ RV
Concrete thickness factor in shear 5
Embedment h ef
in .
( mm )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-7 / 8
( 226 )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-7 / 8
( 226 )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-8 / 9
( 226 )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-7 / 8
( 226 )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-7 / 8
( 226 )
4-1 / 2
( 115 )
7-1 / 16
( 180 )
8-7 / 8
( 226 )
1-3 / 4
( 44 )
n / a
n / a
n / a
0.26
0.16
0.13
n / a
n / a
n / a
0.10
0.06
0.05
0.19
0.12
0.10
n / a
n / a
n / a
2-3 / 16
( 55 )
0.58
0.55
0.54
0.28
0.18
0.14
0.54
0.53
0.53
0.13
0.08
0.07
0.26
0.17
0.13
n / a
n / a
n / a
3
( 76 )
0.61
0.57
0.56
0.34
0.21
0.17
0.56
0.54
0.54
0.22
0.14
0.11
0.34
0.21
0.17
n / a
n / a
n / a
4
( 102 )
0.65
0.59
0.57
0.42
0.26
0.20
0.58
0.56
0.55
0.33
0.21
0.17
0.42
0.26
0.20
n / a
n / a
n / a
5
( 127 )
0.68
0.62
0.59
0.51
0.32
0.25
0.60
0.57
0.56
0.47
0.30
0.24
0.51
0.32
0.25
n / a
n / a
n / a
5-11 / 16
( 145 )
0.71
0.63
0.61
0.58
0.36
0.28
0.61
0.58
0.57
0.57
0.36
0.29
0.58
0.36
0.28
0.68
n / a
n / a
6
( 152 )
0.72
0.64
0.61
0.61
0.38
0.30
0.62
0.59
0.58
0.61
0.39
0.31
0.61
0.38
0.30
0.69
n / a
n / a
7
( 178 )
0.76
0.66
0.63
0.71
0.44
0.35
0.64
0.60
0.59
0.77
0.49
0.39
0.71
0.44
0.35
0.75
n / a
n / a
8
( 203 )
0.79
0.69
0.65
0.81
0.51
0.40
0.66
0.62
0.60
0.94
0.60
0.48
0.81
0.51
0.40
0.80
n / a
n / a
8-1 / 4
( 210 )
0.80
0.69
0.65
0.84
0.52
0.41
0.67
0.62
0.61
0.99
0.63
0.50
0.84
0.52
0.41
0.81
0.70
n / a
9
( 229 )
0.83
0.71
0.67
0.92
0.57
0.45
0.68
0.63
0.61
1.00
0.72
0.57
0.92
0.57
0.45
0.85
0.73
n / a
10-1 / 16
( 256 )
0.87
0.74
0.69
1.00
0.64
0.50
0.70
0.65
0.63
0.85
0.68
1.00
0.64
0.50
0.90
0.77
0.72
11
( 279 )
0.90
0.76
0.71
0.69
0.55
0.72
0.66
0.64
0.97
0.77
0.69
0.55
0.94
0.81
0.75
12
( 305 )
0.94
0.78
0.72
0.76
0.60
0.74
0.68
0.65
1.00
0.88
0.76
0.60
0.98
0.84
0.78
14
( 356 )
1.00
0.83
0.76
0.88
0.70
0.78
0.71
0.68
1.00
0.88
0.70
1.00
0.91
0.85
16
( 406 )
0.88
0.80
1.00
0.80
0.82
0.74
0.70
1.00
0.80
0.98
0.90
18
( 457 )
0.92
0.84
0.90
0.86
0.77
0.73
0.90
1.00
0.96
24
( 610 )
1.00
0.95
1.00
0.98
0.86
0.81
1.00
1.00
30
( 762 )
1.00
1.00
0.95
0.88
36
( 914 )
1.00
0.96
> 48
( 1219 )
1.00
Spacing ( s ) / Edge distance ( c a
) / Concrete thickness ( h ), - in . ( mm )
1 Linear interpolation not permitted 2 Shaded area with reduced edge distance is permitted provided the installation torque is reduced to 0.30 T max for 5d ≤ s ≤ 16-in . and to 0.5 T max for s > 16-in . 3 When combining multiple load adjustment factors ( e . g . for a four-anchor pattern in a corner with thin concrete member ) the design can become very conservative . To optimize the design , use PROFIS Engineering or perform anchor calculation using design equations from ACI 318 Chapter 17 . 4 Spacing factor reduction in shear applicable when c < 3 * h ef
. ƒ AV , is applicable when edge distance , c < 3 * h ef
. If c ≥ 3 * h ef , then ƒ AV
= ƒ AN .
5 Concrete thickness reduction factor in shear , ƒ HV , is applicable when edge distance , c < 3 * h ef
. If c ≥ 3 * h ef , then ƒ HV
= 1.0 . ƒ HV
Anchor Fastening Technical Guide Edition 22 | 3.0 ANCHORING SYSTEMS | 3.2.5 HIT-ICE ADHESIVE ANCHORING SYSTEM 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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