Steel Buildings in Europe

Part 10: Technical Software Specification for Composite Beams 10 - 22 Steel sheeting with ribs parallel to the beam axis When the ribs are parallel to the beam axis, a factor  k applies to the design resistance of a headed stud. It depends on the distance b 0 determined as follows: If b r > b b : b 0 = ( b r + b b )/2 Otherwise: b 0 = b r           1 0.6 p sc p 0 h h h b k  The maximum value of h sc is h p + 75 mm. The maximum value of  k is 1,0. Steel sheeting with ribs perpendicular to the beam axis When the ribs are perpendicular to the beam axis, a factor k t applies to the design resistance of a headed stud:           1 0.7 p sc p 0 r t h h h b n k where: b 0 is defined in Section 6.1.3 n r is the number of connectors in one rib at a beam intersection, not to exceed 2 in computations. The reduction factor k t should not exceed the maximum values given in Table 6.1 (EN 1994-1-1 Table 6.2). The values of the reduction factor k t are valid when: h p  85 mm b 0  h p Table 6.1 Maximum values of the reduction factor k t Studs welded through profiled steel sheeting Profiled steel sheeting with holes Diameter 16 19 22 16 19 22 t p  1 mm 0,85 0,75 n r = 1 t p > 1 mm 1,00 0,75 t p  1 mm 0,70 0,60 n r = 2 t p > 1 mm 0,80 Not accepted in EN 1994-1-1 Not covered by EN 1994 0,60