Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
How can you tell if you need to establish a drainage system as part of your building project?
Which inlet options does the Grundfos MULTILIFT offer?
What are the approaches that can reduce hydrostatic pressure on your building?
Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
Test results
Congratulations. You have passed the test and completed the 4 - Wastewater in commercial buildings
Achieved badges:
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: No
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: Yes
Q: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?
A: Could be necessary if the groundwater level is expected to rise
Q: How can you tell if you need to establish a drainage system as part of your building project?
A: If the building next door does not have a drainage system, your building does not need one either.
Q: How can you tell if you need to establish a drainage system as part of your building project?
A: When the projected area of a building exceeds 2.000 m2 a drainage system is required.
Q: How can you tell if you need to establish a drainage system as part of your building project?
A: By conducting a thorough pre-investigation of the conditions of the soil, the groundwater conditions, and the drainage situation on neighbouring lots.
Q: Which inlet options does the Grundfos MULTILIFT offer?
A: DN32-DN100
Q: Which inlet options does the Grundfos MULTILIFT offer?
A: DN50-DN150
Q: Which inlet options does the Grundfos MULTILIFT offer?
A: DN40, DN65, DN100 and DN150
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: Constructing a robust foundation, anchoring the building to the underground, or installing a drainage system – or all three in some cases
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: There is no need to reduce the hydrostatic pressure as it adapts automatically to the weight of the building.
Q: What are the approaches that can reduce hydrostatic pressure on your building?
A: Using the help of the local water supply company to once a year pump away the rising ground water around the building.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: The weight and the shape of the pumping pit depend on the soil conditions, saturation of the soil and the local regulations. This makes planning difficult.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: The pumps in an outside pumping pit cannot be controlled from a Building Management System.
Q: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?
A: A pumping pit installation calls for longer planning and installation time, more excavation time and higher excavation costs, as well as a higher initial investment.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When sanitary appliances are installed in the basement of an existing building, when space outside the building is limited or when excavation conditions are difficult.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When there is a need to remove black and grey wastewater, drainage water and surface water.
Q: When is it ideal to use a lifting station as a pressurised system for wastewater removal in commercial buildings?
A: When storage of wastewater volumes is required over a longer period of time.