Roofing sandwich panel
with polyurethane core and two steel facings

Your sandwich panel's mass per unit area (kg/m²), obtained on the basis of the information provided above.

Input the mass of fixing screws based on the surface area of the product, expressed in g/m². By default, the mass of the screws is assumed to be 39,9 g/m² in standard areas. The mass of a standard screw is 30 g. The number of fixing screws required is 1.33 screws/m². 

Input the distance in kilometres between l'Enveloppe Métallique du Bâtiment member's manufacturing plant and the construction site, which has a default value of 487 km.
For information, the payload considered for lorries is 24 tonnes. Lorry fuel consumption is 0.38 L/km. 

Your sandwich panel’s reference service life (RSL) in years. Non-parameterable data, provided for information.