Rothoblaas Catalogue 2019

TECHNICAL ASPECTS

INSTALLATION

Spacing and minimum distances

M10 M12 M16 M20

s min c min h min

Minimum spacing

[mm] [mm] [mm]

68 68

81 81

115 115

135 135

Minimum edge distance

Minimum thickness of concrete support

100 120

170 200

s

c

Spacing and critical distances

M10 M12 M16 M20

h

s cr,N (3) s cr,sp (4) c cr,N (3) c cr,sp (4)

[mm] [mm] [mm] [mm]

150 180 255 250 300 425

300 500 150 250

min

Critical spacing

c

s

75

90

128 213

Critical edge distance

125

150

For spacing and distances smaller than the critical ones, strength values have to be reduced depending on the installation parameters.

STATIC VALUES

Valid for a single anchor in thickened C20/25 grade concrete with a thin reinforcing layer when spacing and edge-distance are not limiting parameters. CHARACTERISTIC VALUES UNCRACKED CONCRETE TENSION (1) SHEAR (2) N Rk,p [kN] γ Mp V Rk,s [kN] γ Ms M10 12,0 1,8 14,5 1,25 M12 16,0 1,8 21,1 1,25 M16 16,0 1,8 39,3 1,25 M20 30,0 1,5 58,8 1,25 incremental factor for N Rk,p (5) ψ c C30/37 1,22 C40/50 1,41 C50/60 1,55

ADMISSIBLE VALUES (recommended)

UNCRACKED CONCRETE

TENSION

SHEAR

N rec [kN]

V rec [kN]

M10 M12 M16 M20

4,8 6,3 6,3

8,3

12,1 22,5 33,6

14,3

GENERAL PRINCIPLES:

- Characteristic values according to ETA-17/0237. - Design values can be obtained from characteristic values as follows: R d = R k / γ m . Coefficients γ m are listed in the table in accordance with the failure characteristics and product certificates. - Admissible values (recommended) are evaluated based on the characteristic values by applying the material safety factors γ m according to ETA and a further partial factor for external actions γ f = 1,4. - For the calculation of anchors with reduced spacing, or too close to the edge, please refer to ETA. Similarly, in case of fastening on concrete- supports with a better-grade, limited thickness or a thick reinforcing layer please see ETA.

NOTES:

(1) Pull-out failure mode. (2) Steel failure mode. (3) Breakage characteristics for formation of concrete cone for tensile loads. (4) Splitting failure mode for tensile loads. (5) Tensile-strength increment factor (excluding steel failure).

COMPLEMENTARY PRODUCTS | AB7 | 205