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Found 2 results

  1. Hi All, I am modelling a small catchment that is densely urbanised and contains several large industrial buildings as well as residential areas. I am using 2d_SA boundaries as my flow inputs and I am wondering what is the best way to model the buildings, as zshape blockouts or using the materials layer with very high mannings. I am wanting to see that the water flows around the buildings - especially the industrial buildings. I have also heard it mentioned that I could do cut out shapes from the 2d_SA polygons. What do you think would work the best? Thanks so much, Melodea.
  2. Hi all, When modelling the effect of flooding on proposed urban developments, would it be more accurate to set freeboard requirements by: 1) Using an obstruction around the building and set freeboard requirements from the water level at each point of flood water entry (e.g. doors, basement driveways, basement stairs etc.); or 2) Use a high mannings value within the proposed building extent and set freeboard requirements above that level? Sorry, if this is a silly question. Appreciate your responses. Roger
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