[Hokusai]

> In the design, the slopes of the drainage pipes and the velocity constraints are selected in a way to have minimum excavation depths, and to have the flow velocity within its design ranges.

I guess that the goal is to make it cost effective. To dig deeper that the strictly necessary would add durability that a temporary camp does not need and a lot of extra cost.

It would have been nice to know the advantages and disadvantages of each camp design. But, I guess that it was not inside the scope of designing the sewage.

[monaelkass]

Yes of course! It is found out that the circular design layout would be more economic than the hexagon design layout. Although, the circular design has less accommodation area than the latter one. On the other hand, if there is enough land to set up these camps, it would be better to choose the Hexagon design layout as it is more spacious and allow the use of more service facilities.