Frost Brochure Issue 03 - Catalog - Page 15
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Selected top size (i.e. grate free
area), gully outlet size and piping
system size all relate to each other
and should be within recognised
parameters.
PIPEWORK
The type and size of pipework in an
installation is fundamental to the
correct selection of gullies. Frost
drainage gullies can be connected to
all pipework in general use.
FLOOR AND FLOORING
Floor construction type has a
direct influence upon appropriate
drainage selection and so should be
established at the outset.
The depth of the structural slab and
available space will influence the
selection of gullies, while selection
of an extension may be necessary to
bring the grating or cover to finished
floor level.
Installations with a drainage
membrane will normally require
the use of gullies with a membrane
clamping collar.
Drains located in pedestrian surfaces
or access routes must be disabled
compliant.
Different kinds of floor finishes, such
as concrete, epoxy resin, ceramic tiles
or sheet vinyl will influence the type
of grating or cover to be selected.
MATERIALS AND APPEARANCE
Strength, corrosion resistance
and appearance are important
considerations when making
drainage selections
Finished floor areas
Gullies with attractive gratings or
covers made of satin nickel bronze,
polished nickel bronze or stainless
steel are for use in areas where they
contribute to the aesthetic appeal of
an area.
Unfinished floor areas
Ductile iron gratings, whilst extremely
durable and visually acceptable
are best suited in unfinished and/
or industrial settings such as service
areas or for restoration projects to
match period architecture.
INTERNATIONAL STANDARDS
Satin Nickel Bronze and Polished
Nickel Bronze to BS1400.
Stainless Steel to BS EN 100881:2005 Grade 1.4301 (304) or Grade
1.4401 (316) if specified.
Ductile Iron to BS EN 1563 & 1564
Cast with the ductility of steel and
more than doubling the tensile
strength of cast iron.
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