For further information please contact SLE Cladding Ltd. Tel.
01948 666 321. Fax. 01948 66 55 32
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CASCADE
PVC-U Gutter &
Downpipe Systems |
Click on the appropriate Green Button below
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Design & Installation Guidelines |
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114mm Square Style Gutter & 65mm Square Downpipes & Fittings |
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106mm Prostyle Ogee Gutter & Fittings |
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115mm x 75mm Deepstyle
Gutter & Fittings |
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112mm Half Round
Gutter & Fittings |
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160mm Industrial
Half Round Gutter & Fitting |
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200mm Gutter by Hunter. |
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68mm
Downpipe & Fittings |
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110mm Industrial
Pipes & Fittings |
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160mm Industrial
Pipes & Fittings. |
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200mm
Industrial Pipes & Fittings |
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See notes below |
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| ROOF SYSTEM SELECTION |
| The amount of rainwater collected by
a given roof area will determine the type of gutter system as well as the
number and positions of the outlets. The effective roof area must be
calculated and checked against the gutter flow capacity of the rainwater
system used. The formula below is used to calculate the effective roof
area: |
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Formula E = (B+C/2)*L
B = Half roof span (m). C=Ridge to
eaves height (m) L = Slope length (m). E =
Effective roof area (m2) |
NOTES. See also
Design & Installation Guidelines at 1/. above.
RAINFALL INTENSITY.
Rainfall Intensity in the UK varies with location
and surrounding topography: a rainfall intensity of 75mm/ hour is usually taken
as the UK maximum when calculating the discharge requirements for gutter,
downpipe and underground drainage systems.
THERMAL EXPANSION.
PVC has a coefficient of linear expansion of 6 x
10-5. Consequently a 2 metre length of gutter or downpipe will expand by 2.4mm
for a 20 deg. C temperature rise. This expansion is taken into consideration in
the design of Cascade rainwater fittings and must be accommodated when
installing.
MANUFACTURE
Cascade rainwater systems satisfy the requirements
of :- The Building Regulations 1985, 1990. Building Standards
(Scotland) Regulations 1990. Building Regulations (Northern Ireland) 1990.
Cascade rainwater systems are manufactured under
the following British Standards.
BS5750: Part 2 1990. Quality Systems. BS4576: Part1: 1990
Specification for Unplasticised
PVC.,
For further information please contact SLE Cladding Ltd. Tel.
01948 666 321. Fax. 01948 66 55 32
Copyright (c)1999
SLE Cladding Limited.
