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

Page 21 of European technical approval ETA-08/0376, issued on 8 September 2011
Table 14: Design method A:
Characteristic values for tension loads in uncracked concrete
Anchor size reinforcing bar ∅ 8 ∅ 10 ∅ 12 ∅ 14 ∅ 16 ∅ 20 ∅ 25 ∅ 28 ∅ 32
Steel failure (Properties acc. to Annex 4)
Characteristic tension resistance,
BSt 500 S acc. to DIN 488-2:1986 or N Rk,s [kN] 28 43 62 85 111 173 270 339 442
E DIN 488-2:2006 5)
Partial safety factor γ Ms,N
1)
Combined pullout and concrete cone failure
Characteristic bond resistance τ Rk,ucr [N/mm²] in uncracked concrete C20/25
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
11
9,0
11
9,5
flooded bore
hole 6) h ef≤12d 11 10 9,0 8,0 7,5 6,5 5,5 5,0 5,0
dry and wet
concrete
h ef ≤12d
h ef >12d
6,5
5,0
6,5
5,5
flooded bore
hole 6) h ef≤12d 6,5 6,5 6,5 6,0 6,0 5,5 4,5 4,5 4,0
dry and wet
concrete
h ef ≤12d
h ef >12d
6,0
5,0
6,0
5,0
flooded bore
hole 6) h ef≤12d 6,0 6,0 5,5 5,5 5,5 5,0 4,0 4,0 3,5
Partial safety factor (dry and wet concrete) γ Mp = γ Mc
1)
Partial safety factor (flooded bore hole) γ Mp = γ Mc
1)
10
9,0
6,5
6,0
5,5
5,0
10
9,5
6,0
5,5
5,5
5,0
1,40
9,5
9,5
6,0
6,0
5,5
5,5
9,0
9,0
5,5
5,5
5,0
5,0
9,0
9,0
5,5
5,5
4,5
4,5
1,8 2) 2,1 3)
C30/37 1,04
Increasing factors for
concrete ψ c
C40/50 1,08
C50/60 1,10
2,1 3)
8,5
8,5
5,0
5,0
4,5
4,5
8,5
8,5
5,0
5,0
4,5
4,5
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) For reinforcing bars, which do not comply with DIN 488: The characteristic resistance N Rk,s shall be
determined acc. to Technical Report TR 029, Equation (5.1).
6) Applications in flooded holes only until h ef = 12 d allowed
Regarding design of post-installed rebar as anchor see chapter 4.2
Powers PURE150-PRO Injection resin with anchor rod for concrete
Application with reinforcing bar
Design method A:
Characteristic values for tension loads in uncracked concrete
Annex 13
of European
technical approval
ETA-08/0376