NBN EN 12056-3 : 2000
Current
The latest, up-to-date edition.
GRAVITY DRAINAGE SYSTEMS INSIDE BUILDINGS - PART 3: ROOF DRAINAGE, LAYOUT AND CALCULATION
12-01-2013
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
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