Which of these screens have a very large footprint?

Usually while designing what is the range of the width of the aerated grit chamber assumed?

Usually while designing what is the range of depth of the aerated grit chamber assumed?

What is the maximum allowable approach velocity for a bar screen at peak flow rates?

From which of these type of screens there is a possibility of odour emission?

What is the maximum allowable head loss for a manual coarse screen?

At what depth are the air diffusers placed in the grit chamber?

At what velocity will the particles settle down?