UNI EN 12056-4 : 2001
Current
The latest, up-to-date edition.
GRAVITY DRAINAGE SYSTEMS INSIDE BUILDINGS - PART 4: WASTEWATER LIFTING PLANTS - LAYOUT AND CALCULATION
30-09-2001
Foreword
1 Scope
2 Normative references
3 Definitions, symbols, units and designation
3.1 Definitions
3.1.1 Wastewater lifting plant
3.1.2 Backflow
3.1.3 Flood level
3.1.4 Backflow loop
3.1.5 Duty flow Vp
3.1.6 Discharge head, Hp
3.1.7 Collection tank for wastewater
containing faecal matter
3.1.8 Useful volume
3.2 Symbols
4 Protection against backflow
5 Installation
5.1 General requirements
5.2 Pipework
5.3 Ventilation
5.4 Drains
5.5 Electrical connections
6 Selection of wastewater lifting plants
6.1 Determination of flow, Qp
6.2 Determination of head, Hp
6.2.1 Calculation procedure for head, Hp
6.2.2 Static head, Hgeo
6.2.3 Losses in valves and fittings, Hv,a
6.2.4 Friction losses in discharge pipework,
Hv,r
6.3 Determination of useful volume, V
7 Commissioning
8 Inspection and maintenance
8.1 Inspection
8.2 Maintenance
8.3 Maintenance contract
Annex A (informative) Bibliography
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