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European Technical Assessment
ETA-15/0876
English translation prepared by DIBt
Specific part
1
Technical description of the product
The nailed shear connector X-HVB is an L-shaped metal part that is mechanical attached with
powder-actuated fasteners on steel beams of steel-to-concrete composite, as an alternate to
welded headed studs, see annexes A1 and A2.
Aside of the use as shear connector for composite beams, nailed shear connectors are also
used for the end anchorage of composite decks, see annex A1.
The nailed shear connectors X-HVB can be arranged with or without profiled composite
decking, in one or more rows on steel beams of composite beams. Details of positioning of the
nailed shear connectors X-HVB can be found in annexes B5 to B8.
The L-shaped sheet metal part is a 2 mm or 2.5 mm thick steel sheeting sheet steel with a
fastening and an anchorage leg.
Depending on the thickness of the concrete slab or the height of the composite deck, a
distinction is made between the following types of X-HVB fasteners with different lengths of the
anchorage leg of the sheet metal part: X HVB 140, X-HVB 125, X-HVB 110, X-HVB 95,
X-HVB 80, X-HVB 50 and X-HVB 40 (see annex A2).
The fastening leg of the L-shaped metal part is fastened by 2 powder-actuated fasteners
X-ENP-21 HVB to the steel member. The fasteners X-ENP-21 HVB are made of zinc plated
carbon steel and comprises of a pin with a shank diameter of 4.5 mm and two metal washers,
see annex A2. The washers serve to guide the fastener while it is being driven into the base
material and they contribute to the shear resistance. For the execution of the connection with
powder-actuated fasteners, the manufacturer's information considering the information in the
annexes B1 to B3.
2
Specification of the intended use in accordance with the applicable European
Assessment Document
The intended use of the nailed shear connector X-HVB is the dowelling of composite beams
and safeguarding of the composite effect of composite decks according to EN 1994-1-1. It can
be used in new buildings or in existing buildings with the aim of reinforcing existing floor
constructions.
The intended use of the nailed shear connectors comprises composite structures subject to
static and quasi-static loading.
The performances given in Section 3 are only valid if the nailed shear connector is used in
compliance with the specifications and conditions given in Annexes B1 to B8.
The verifications and assessment methods on which this European Technical Assessment is
based lead to the assumption of a working life of the nailed shear connector of at least 50 years.
The indications given on the working life cannot be interpreted as a guarantee given by the
producer, but are to be regarded only as a means for choosing the right products in relation to
the expected economically reasonable working life of the works.
Z76254.21
Page 3 of 22 | 22 October 2021
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