Design Procedure
Use the following slide shows to follow the design procedures used in this case study. Each design category has been organized to show how each objective has been met for this project. These galleries are designed to help you relate specific assignments and tasks to the overall scheme of engineering design for the AHP storm water wetland. The images shown in these galleries are not necessarily related to the case study. You will be provided the solutions for the project as you complete individual assignments. If you are an instructor who would like access to the solutions please contact Dr. Puneet Srivastava at srivapu@auburn.edu or alternatively you may contact the Department of Biosystems Engineering at (334) 844-3537.
HYDROLOGY
This slide show will show you the specific steps that were taken in order to complete the first objective of the AHP Case Study. The images in this gallery are not the solutions to the case study.
Collect and import raw data into GIS for processing. Some examples of the types of data include: DEM, aerial imagery, LULC, soils, etc. An example DEM layer is shown in the window.
Develop the hydrograph for the existing hydrology of the site. Repeat this process for the proposed design hydrology.
This slide show will show you the specific steps that were taken in order to complete the first objective of the AHP Case Study. The images in this gallery are not the solutions to the case study.
Key Concepts:
Watershed Delineation
Time of Concentration
Runoff Volume
Runoff Peak Discharge
Open-Channel Flow
Engineering Tools:
ArcGIS
HEC-HMS
ArcHydro Tools
HEC-GeoHMS
Resources:
City of Auburn Storm Water Management Manual
AU Campus Base-Mapping
WETLAND DESIGN
This slide show will show you the specific steps that were taken in order to complete the second objective of the AHP Case Study. The images in this gallery are not the solutions to the case study. (Image Credit: ADEM)
Begin the design process by determining the function of the wetland system (i.e. nutrient removal, sediment removal, habitat creation, etc.)
This goes beyond the scope of our undergraduate curriculum at Auburn. Some examples of this would include modeling hydrologic performance as well as nutrient removal. Several steps would need to be taken to complete this aspect of the design (i.e. evapotranspiration calculations, data collection, calibration and validation, and perhaps even sensitivity and uncertainty analysis.)
This slide show will show you the specific steps that were taken in order to complete the second objective of the AHP Case Study. The images in this gallery are not the solutions to the case study. (Image Credit: ADEM)
Key Concepts:
Mass Balance
Detention Time
Evapotranspiration
Erosion and Sedimentation
Nutrient Removal
Engineering Tools:
ACAD
HEC-HMS
Resources:
ACES LID Handbook
EPA Wetland Manual
AU Campus Base-Mapping
HYDRAULIC DESIGN
This slide show will show you the specific steps that were taken in order to complete the third objective of the AHP Case Study. The images in this gallery are not the solutions to the case study.
Determine the inflow conditions of the site at points of interest (i.e. site inlet, wetland inlet, wetland components, etc.)
Check the new hydrologic conditions of the site. The City of Auburn requires that the new design not create more runoff than pre-development conditions.
This slide show will show you the specific steps that were taken in order to complete the third objective of the AHP Case Study. The images in this gallery are not the solutions to the case study.
Key Concepts:
Orifice Flow
Weir Flow
Pipe Flow
Channel Flow
Storage-Discharge Tables
Engineering Tools:
ACAD
HEC-HMS
Resources:
City of Auburn Storm Water Management Manual
AU Campus Base-Mapping