Rothoblaas - Wood screws and connectors Page 149
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STATIC VALUES CHARACTERISTIC VALUES EN 1995:2014 SHEAR CONNECTION WITH CROSSED CONNECTORS RIGHT-ANGLE JOINT - MAIN BEAM/SECONDARY BEAM d1 L S g HT(1) S g NT (1) BHT,min HHT,min = hNT,min bNT,min [mm] [mm] [mm] [mm] [mm] [mm] [mm] ì200 220 240 260 280 300 320 55 75 95 115 125 135 145 115 115 115 115 125 135 145 90 95 100 110 115 125 130 200 200 200 200 215 230 245 9 340 360 380 400 440 480 520 155 165 175 185 205 225 245 155 165 175 185 205 225 245 140 145 150 160 175 185 200 260 270 285 300 330 355 385 no. pairs R1V,k (2) R2V,k(2) m(3) [mm] [kN] [kN] withdrawal(4) instability 8,8 22,9 86 1 131 2 16,5 42,7 176 3 23,9 61,5 86 1 12,1 22,9 131 2 22,5 42,7 176 3 32,5 61,5 86 1 15,3 22,9 131 2 28,5 42,7 176 3 41,2 61,5 86 1 18,5 22,9 131 2 34,5 42,7 176 3 49,9 61,5 86 1 20,1 22,9 131 2 37,5 42,7 176 3 54,2 61,5 86 1 21,7 22,9 131 2 40,5 42,7 176 3 58,6 61,5 86 1 23,3 22,9 131 2 43,5 42,7 176 3 62,9 61,5 86 1 24,9 22,9 131 2 46,5 42,7 176 3 67,3 61,5 86 1 26,5 22,9 131 2 49,5 42,7 176 3 71,6 61,5 86 1 28,1 22,9 131 2 52,5 42,7 176 3 75,9 61,5 86 1 29,7 22,9 131 2 55,5 42,7 176 3 80,3 61,5 86 1 32,9 22,9 131 2 61,5 42,7 176 3 89,0 61,5 86 1 35,9 22,9 131 2 67,0 42,7 176 3 97,0 61,5 86 1 35,9 22,9 131 2 67,0 42,7 176 3 97,0 61,5 96 96 96 96 103 110 117 124 131 138 145 160 174 188 NOTES: (1) The values given are calculated considering a distance a 1CG ≥ 5d. In some cases the asymmetrical laying of connectors is needed (Sg HT ≠ Sg NT ). (2) The compression design strength of the connector is the lower between the withdrawal-side design strength (R 1V,d) and the instability design strength (R 2V,d). RV,d = min R1V,k kmod γM R2V,k γM1 The coefficients γM and kmod should be taken according to the current regulations used for the calculation. (3) The assembly height (m) applies in the event of symmetrical installation of the flush connectors (Sg HT = Sg NT ) above the elements. In the case of asymmetric installation, it is necessary to provide for installation of the connectors on the main beam side with the head buried so as to guarantee the effective lengths (Sg HT, Sg NT ) indicated in the table. (4) The thread axial resistance to withdrawal has been evaluated considering an effective thread length equal to Sg. The connectors must be inserted at 45° with respect to the shear plane. STRUCTURES | VGZ | 149
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