1 / 12

451 Term Project: Storm Water Design

451 Term Project: Storm Water Design. Id Gaffe. Hilary Brugger Stephen Kelly Anastasia Nugent Joseph Roberts. Level of Service Measures. Design storm water runoff system for a 1 hour, 100 year storm as specified by the College Station Unified Development Ordinance.

duyen
Download Presentation

451 Term Project: Storm Water Design

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 451 Term Project:Storm Water Design Id Gaffe Hilary Brugger Stephen Kelly Anastasia Nugent Joseph Roberts

  2. Level of Service Measures • Design storm water runoff system for a 1 hour, 100 year stormas specified by the College Station Unified Development Ordinance. • Using the Rational Method to determine a conservative calculation for the excess runoff: • Design intensity for a 1 year, 100 year storm is 4.41 in/hr • Design runoff coefficient for undeveloped and grassy areas is .355 • Design runoff coefficient for impervious surfaces is .945

  3. Estimate Demand • 78098 cy is equivalent to 48.4 acre-feet. • A pond with a maximum depth of 6 feet would be a 10 acre pond.

  4. Alternative 1: Enlarge Spearman Lake

  5. Alternative 2: Creation of a Storm Water Detention Pond

  6. Quantity Estimates Alternative 1 Alternative 2

  7. Capital Cost Estimate Alternative 1 Alternative 2

  8. Operating Estimates Alternative 1 Alternative 2

  9. Overall Cost Estimate Alternative 2 Alternative 1

  10. How Will We Pay For It? • We will be paying for this via municipal bonds and grants. • The grants that we believe we can receive will cover 20% of the capital cost. • The other 80% will be covered using bonds with a 7% interest rate.

  11. Cost Per Household

  12. Questions?

More Related