Test your knowledge

Test results

Congratulations. You have passed the test and completed the 4 - Wastewater in commercial buildings

Sorry. You did not pass the 4 - Wastewater in commercial buildings test this time

Achieved badges:

How would you rate this course?

1: What are the approaches that can reduce hydrostatic pressure on your building?

Constructing a robust foundation, anchoring the building to the underground, or installing a drainage system – or all three in some cases

1: What are the approaches that can reduce hydrostatic pressure on your building?

There is no need to reduce the hydrostatic pressure as it adapts automatically to the weight of the building.

You can find the answer here >

1: What are the approaches that can reduce hydrostatic pressure on your building?

Using the help of the local water supply company to once a year pump away the rising ground water around the building.

You can find the answer here >

2: What makes the Grundfos MULTILIFT easy to install?

You only need to set the following in the controller: 1) the maximum number of starts/stops of the pumps and 2) the level of the high water level alarm in the controller.

You can find the answer here >

2: What makes the Grundfos MULTILIFT easy to install?

The system comes pre-assembled with a freely adjustable inlet and many other installer benefits

2: What makes the Grundfos MULTILIFT easy to install?

The system comes pre-assembled and all settings in the controller are set from the factory.

You can find the answer here >

3: What does a Grundfos MULTILIFT protect against?

Flooding of cooling towers

You can find the answer here >

3: What does a Grundfos MULTILIFT protect against?

Too high concentration of faecal matters in the wastewater

You can find the answer here >

3: What does a Grundfos MULTILIFT protect against?

Backflow and basement flooding

4: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?

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.

You can find the answer here >

4: Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?

The pumps in an outside pumping pit cannot be controlled from a Building Management System.

You can find the answer here >

4: 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 pumping pit installation calls for longer planning and installation time, more excavation time and higher excavation costs, as well as a higher initial investment.

5: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?

You can find the answer here >

5: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?

Yes

5: Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?

Could be necessary if the groundwater level is expected to rise

You can find the answer here >

6: Which inlet options does the Grundfos MULTILIFT offer?

DN32-DN100

You can find the answer here >

6: Which inlet options does the Grundfos MULTILIFT offer?

DN50-DN150

6: Which inlet options does the Grundfos MULTILIFT offer?

DN40, DN65, DN100 and DN150

You can find the answer here >

What are the approaches that can reduce hydrostatic pressure on your building?

What makes the Grundfos MULTILIFT easy to install?

What does a Grundfos MULTILIFT protect against?

Why can it be a challenge to install a pumping pit outside a building when removing grey or black wastewater from below sewage level?

Would you recommend drainage around a building if there was soil of permeability and the groundwater level was above drainage level?

Which inlet options does the Grundfos MULTILIFT offer?

Happy with your answers?

Test results

Achieved badges:

How would you rate this course?