BS EN 12056-3:2000
Current
The latest, up-to-date edition.
Gravity drainage systems inside buildings Roof drainage, layout and calculation
Hardcopy , PDF
English
30-03-2007
Foreword
1 Scope
2 Normative references
3 Definitions and symbols
3.1 Definitions
3.2 Symbols
4 Runoff calculations
4.1 Quantity of rainwater runoff
4.2 Rainfall intensity, r
4.3 Effective roof area, A
5 Hydraulic design
5.1 Eaves gutters
5.2 Valley and parapet gutters
5.3 Gutter outlets
5.4 Flat roof outlets
6 Rainwater pipes
6.1 Part filled (non-siphonic systems)
6.2 Siphonic systems
6.3 Drains
6.4 Connection to sanitary pipework
7 Layout
7.1 General
7.2 Gutters
7.3 Outlets
7.4 Emergency outlets
7.5 Access
7.6 Pipework
7.7 Trace heating
7.8 Change of building use
ANNEX A (NORMATIVE) TESTING OF GUTTERS AND OUTLETS
A.1 Capacity of gutter and outlet in combination
A.2 Capacity of gutter
A.3 Capacity of gutter outlet
ANNEX B (INFORMATIVE) NATIONAL AND LOCAL REGULATIONS AND
PRACTICE
ANNEX C (INFORMATIVE) CAPACITY OF DRAINS
ANNEX D (INFORMATIVE) LOGIC DIAGRAMS
NATIONAL ANNEX NA (INFORMATIVE) MATERIALS AND COMPONENTS FOR
RAINWATER GOODS
NATIONAL ANNEX NB (INFORMATIVE) METEOROLOGICAL ASPECTS
NATIONAL ANNEX NC (INFORMATIVE) EFFECTIVE CATCHMENT AREA
NATIONAL ANNEX ND (INFORMATIVE) HYDRAULIC DESIGN
NATIONAL ANNEX NE (INFORMATIVE) LAYOUT, INSTALLATION,
INSPECTION, TESTING AND MAINTENANCE
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