:: Metecno Group ::

Self-supporting panel system, insulated with rockwool for roof internal and external wall buildings.
The ROCKSTEEL® ROOF panel, is manufactured in accordance with a system patented by Metecno, and consists of a profiled external steel facing, an internal micro-ribbed liner, with an insulation core of high density orientated rockwool, arranged perpendicular to the plane of the panel and positioned in strips, with longitudinally off-set and transversally compacted joints, so to have a perfectly monolithic panel.
The ribs of the external metal sheet are filled with shaped mineral wool strips.
Maximum panel lenght: L = 15,500 mm.

External and internal sheet
The following materials can be used:

Prepainted galvanised steel S 280 GD
Stainless steel AISI 304 - or AISI 430

Nominal thickness: 0.5 - 0.6 - 0.8 mm
Paint: METCOLOR System

Insulation
Rockwool, density: 100 kg./m3
Thickness: 50 - 80 - 100 - 120 mm.

Reaction to fire
Reaction to fire is the degree in which a material resists combustion. With regard to this, materials are assigned a class (0 through 5): the higher the class, the higher the degree of combustion.
The ROCKSTEEL® ROOF panels, 50 - 80 - 100 - 120 mm thick, tested at the Istituto Giordano S.p.A., pursuant to the Ministerial Decree of 26/6/84, were classified 0/1 for reaction to fire in the roof position. Since the panel consists of two steel sheets with a layer of rock wool in between, the class 0 refers to the external surface and the class 1 to the insulation.

TABLE OF SAFE SPANS
Values guaranteed with steel sheets, thickness 0.5 + 0.5 mm. The spans l in metres, as a function of a uniformly distributed load p (daN/m2), have been obtained from tests carried out in Metecno laboratories and calculated to provide a deflection limit: f <= l/200 of the span and a minimum safety coefficient that complies with the UEAtc standards for insulated panels, which have been established and are implemented by primary European Certifying Organizations.