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Direct Rainfall (Rain on Grid) Modelling Guidance: Difference between revisions

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== What is the best approach for modelling buildings in rain on grid model? ==
There are numerous different industry standard ways to represent buildings in a direct rainfall model. [https://downloads.tuflow.com/_archive/Australian_Rainfall_Runoff_Project_15_Subproject_report_buildings_final.pdf | Australian Rainfall and Runoff Guideline, Project 15 (REPRESENTATIONRepresentation OFof BUILDINGSbuildings INin 2D NUMERICALNumerical FLOODFlood MODELSModels)] discusses some of tehthe available options:
# Using depth varying Manning's n, apply a low value (n = 0.02) at shallow depth ( d < 0.03m) and a high value (>0.1 to the building area:
#* This is a very common and quick to setup approach that significantly slows down water passing through the buildings.
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