European Technical Approval ETA-08/0376 - bei Powers Europe

Page 18 of European technical approval ETA-08/0376, issued on 8 September 2011
Table 10: Design method A:
Characteristic values for tension loads in cracked concrete
Anchor size threaded rod M 12 M 16 M 20 M 24 M 27 M 30
Steel failure
Characteristic tension resistance,
Steel, property class 5.8
Characteristic tension resistance,
Steel, property class 8.8
Partial safety factor γ Ms,N
1)
Characteristic tension resistance,
Stainless steel A4 and HCR,
property class 50 (>M24) and 70 (≤ M24)
Partial safety factor γ Ms,N
1)
Combined pullout and concrete cone failure
Characteristic bond resistance τ Rk,cr [N/mm²] in cracked concrete C20/25
N Rk,s [kN] 42 78 122 176 230 280
N Rk,s [kN] 67 125 196 282 368 449
1,50
N Rk,s [kN] 59 110 171 247 230 281
1,87 2,86
Temperature range I 4) :
40°C/24°C
Temperature range II 4) :
60°C/43°C
Temperature range III 4) :
72°C/43°C
dry and wet concrete
h ef ≤12d
h ef >12d
7,5
7,0
flooded bore hole 5) h ef ≤12d 7,5 6,0 5,0 4,5 4,0 4,0
dry and wet concrete
h ef ≤12d
h ef >12d
4,5
4,0
6,5
6,5
6,0
6,0
5,5
5,5
4,0 3,5 3,5
4,0 3,5 3,5
flooded bore hole 5) h ef ≤12d 4,5 4,0 3,5 3,5 3,5 3,5
dry and wet concrete
h ef ≤12d
h ef >12d
4,0
3,5
flooded bore hole 5) h ef ≤12d 4,0 3,5 3,0 3,0 3,0 3,0
3,5
3,5
3,0
3,0
3,0
3,0
5,5
5,5
3,5
3,5
3,0
3,0
5,5
5,5
3,5
3,5
3,0
3,0
Partial safety factor (dry and wet concrete)
1)
γ Mp = γ Mc 1,8 2) 2,1 3)
Partial safety factor (flooded bore hole)
1)
γ Mp = γ Mc 2,1 3)
C30/37 1,04
Increasing factors for
concrete ψ c
C40/50 1,08
C50/60 1,10
Splitting failure
Characteristic edge distance c cr,sp [mm]
h≥2h ef
1,0h ef
2,0h ef >h>1,3h ef 5h ef – 2h
h≤1,3h ef
2,4h ef
Characteristic spacing s cr,sp [mm] 2◦c cr,sp
Partial safety factor (dry and wet concrete) γ Msp
1)
Partial safety factor (flooded bore hole)
γ Msp
1)
1,8 2) 2,1 3)
2,1 3)
1) In absence of other national regulations
2)
The partial safety factor γ 2 = 1,2 is included.
3)
The partial safety factor γ 2 = 1,4 is included.
4)
Explanations see chapter 1.2
5) Applications in flooded holes only until h ef = 12 d allowed
Powers PURE150-PRO Injection resin with anchor rod for concrete
Application with threaded rod
Design method A:
Characteristic values for tension loads in cracked concrete
Annex 10
of European
technical approval
ETA-08/0376