Concrete roofing tiles and fittings for roof covering and wall cladding.Test methodsBS EN 491: 2004 specifies test methods for concrete roofing tiles and valley tiles, for assembly into pitched roof coverings. It covers: definitions and symbols test methods hanging length and squareness of regular front edge tiles cover width flatness mass transverse strength impermeability freeze thaw resistance and Nib support. ISBN 0 580 45377 4

central processor type and speed

It allows manufacturers and buyers of digital printing devices to describe the productivity of various digital printing devices with respect to representative office usage patterns

gouging and allied processes in non-explosive atmospheres

Requirements are included in this Standard for luminaires incorporating ignitors with nominal peak values of the voltage pulse

e) The roof area is not larger than 200 m2 on plan

requirements for the selection of the appropriate flueing option for gas appliances in the UK

General requirements

IEC 61000-3-2:1995

compliance with other risk based standards and regulations

Ultraviolet energy

Recurrent test

awkwardness of fall