Page 29 of European technical approval ETA–11/0390, issued on 27.08.2012
English translation prepared by CSTB
of the European
Technical Approval
ETA - 11/0390
Injection System Hilti HIT-CT 1 for rebar connection
Values for pre-calculation of anchorage length with Hilti HIT-CT 1
Examples for the anchorage length
1)
for rebars (f
y,k
= 500 MPa) in C20/25 (f
bd
= 2,3 MPa)
Rebar
Ø
1
=
2
=
3
=
4
=
5
= 1,0
2
or
5
= 0,7
1
=
3
=
4
= 1,0
Anchorage
length
l
bd
Tension
load
N
Rd
Mortar
volume
V
2)
Anchorage
length
l
bd
Tension
load
N
Rd
Mortar
volume
V
2)
[mm]
[mm]
[kN]
[ml]
[mm]
[kN]
[ml]
8
113
6,5
9 (4)
113
9,3
9 (4)
200
11,6
15 (7)
160
13,2
12 (5)
290
16,8
22
210
17,3
16 (7)
379
21,9
29
265
21,9
20
10
142
10,3
13 (6)
142
14,7
13 (6)
250
18,1
23 (10)
200
20,6
18 (8)
360
26,0
33
270
27,9
24
472
34,1
43
330
34,1
30
12
170
14,7
18 (8)
170
21,1
18 (8)
300
26,0
32
250
31,0
26 (12)
430
37,3
45
320
39,6
34
567
49,2
60
397
49,2
42
14
199
20,1
24
199
28,8
24
350
35,4
42
290
41,9
35
510
51,6
62
380
54,9
46
661
66,9
80
463
66,9
56
16
227
26,2
31
227
37,5
31
380
43,9
52
330
54,5
45
540
62,4
73
430
71,0
58
700
80,9
95
529
87,4
72
18
255
33,2
38
255
47,4
38
400
52,0
60
370
68,7
56
550
71,5
83
480
89,2
72
700
91,0
106
595
110,6
90
20
284
41,0
60
284
58,6
60
360
52,0
76
360
74,3
76
430
62,1
91
430
88,8
91
500
72,3
106
500
103,2
106
22
312
49,6
88
312
70,9
88
370
58,8
105
370
84,0
105
440
69,9
124
440
99,9
124
500
79,5
141
500
113,5
141
24
340
59,0
144
340
84,2
144
390
67,6
165
390
96,6
165
450
78,0
190
450
111,5
190
500
86,7
211
500
123,9
211
25
355
64,1
133
355
91,6
133
400
72,3
150
400
103,2
150
450
81,3
169
450
116,1
169
500
90,3
188
500
129,0
188
1)
Tabulated
maximum tension loads are valid for good bond conditions according to EN 1992-1-1. For all other bond
conditions the values for tension loads must be multiplied by 0.7.
2)
The volume V of mortar can be estimated using the equation V = 1,2· (d
0
²-d²)·
·l
bd
/4;
values in (brackets) correspond to min.
hole diameter
Annex 19
Pre-calculated values for anchorage length
Example: rebar (f
yk
=500 MPa), concrete C20/25 ( f
bd
=2.3 MPa)
