Steel floor connector characteristics
		SPECIFICATIONS
Shear connectors for composite structures
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Application Slab Example Connector's height Shear resistance Pd Ductility Rehabilitation Solid slab height 5-6 cm 40 mm 22.5 kN Not - ductile New structure Steel sheeting # Hi-Bond 55-105 mm of total slab thickness 90 mm 18.2 kN Ductile New structure Steel sheeting # Hi-Bond 55-115 mm of total slab thickness 105 mm 26.6 kN   Ductile New structure Steel sheeting # Hi-Bond 55-135 mm of total slab thickness 125 mm 30.6 kN Ductile                                           ©  COPYRIGHT 2003 TECNARIA S.p.A. SUNSTREAMS CONSULTING The results are not affected by the direction of the connector's base plate. Technical support: Prof. Eng. Romaro (Padua) Italy     Technical Data        Installation   Instructions    Specifications Applications Installation Technicl data DWG Files Certificates Software Contact us Shear stud connector base plate 38 X 50 mm   Data sheet The shear stud connector TECNARIA consists of: A) a round steel bar 12 mm diameter, with 18 mm head, obtained by cold heading from a steel bar. B) a rectangular base plate 4x38x50 mm. The steel bar and the base plate are cold riveted together. C) Two high-resistance nails, passing through 2 holes made in the plate. Nails length 22.5 mm, shank diameter 4.6 mm.  All the components are zinc plated (8 μm thickness) correspondant to 2 "Kesternich" cycles resistance.  Code  diameter and connector height  CTF 12/40  12 X 40 mm  CTF 12/60  12 X 60 mm  CTF 12/70  12 X 70 mm  CTF 12/80  12 X 80 mm  CTF  12/90  12 X 90 mm  CTF 12/105  12 X105 mm  CTF 12/125  12 X125 mm  CTF 12/135  12 X135 mm Specifications: Zinc plated steel shear stud connector, 12 mm shank diameter with head, riveted to a 35 x 50 x 4 mm base plate, fastened into the steel structure by the means of 2 high resistance pins.

Laboratory tests

TECHNICAL CHARACTERISTICS
solid slab	TECNARIA connector's shear resistance with solid slabs Shear resistance of Tecnaria connector with solid slab is not variable with concrete strength class (for classes higher than C20/25).   Application Slab Example Connector's height Shear resistance Pd Ductility Solid slab slab thickness 15cm 125 mm 30.6 kN Ductile   TECNARIA connector's shear resistance with profiled decking transverse to the supporting beam. Shear resistance depends on concrete class, on dimensions of ribs, and on connector's height. The resistance should be taken as the resistance in a solid slab multiplied by the reduction factor kt   With hp < 85mm e hp < bo     Where: Nr is the number of stud connectors in one rib at a beam intersection (not to exceed 2 in computations) and other symbols are as defined in figure. It is advised to choose: - connectors as high as possible (compatible with the cover over connector required); - profiled steel sheeting with ribs with high ratio width / height; - class concrete not lower than C25/30
profiled decking

The connector's resistance to loading and the efficiency of the nailed connection to the steel beam have been experimentally tested according to Eurocode 4 EN 1994-1-1 "Design of composite steel and concrete structures - Part 1.1: General rules and rules for builidings".
Push-out tests required for design have been carried out as described in Annex B of Eurocode.
Besides load tests on simply supported composite beam have been conducted, including both beams connected to solid slab and beams with profiled steel sheeting. The stud's bending tests have been successfully carried out up to a 90° bending angle. The tests proved the optimum performance of the connector and of its single parts. Its high deformation capacity justifies the assumption of ideal plastic behaviour of the shear connection and allows redistribution of shear along the beam.
The tests have been all carried out at the 'Laboratories of the Department of Structural and Transportation Engineering, University of Padua' (Italy).