1. Dunleith Lane drainage Spring 2015
Justin Lyle and Cody Binder
ET 493- Senior Design
Advisor: Mohamed Zeidan & Ed Rode
Construction ET
10/08/2014

2. Dunleith Lane Background
What is Dunleith Lane?
Mandeville, Louisiana
Small subdivision
History
2000- Drainage System and Road constructed
2004- First houses completed construction
Present- Long standing drainage issues

3. Objective To understand what the drainage problem is on Dunleith Lane
Once the problem is fully understood, formulate the most cost efficient way to correct the problem

4. Overall Vision Correct the drainage issue on Dunleith Lane
Reduce the amount of standing water in the ditches after storms
Prevent any flooding from happening in the yards of occupants

5. Accomplishments Fall 2014
Received permission from Homeowners Association to access the subdivision
Took accurate pictures of problem areas within the drainage system
Obtained as-built drawings of drainage system
Conducted field survey of existing conditions of drainage system
Drafted new drawings to display existing elevations
Identified problem areas within the system

6. Ditches in Front Yards
Low spots in some areas do not allow water to flow throughout the interior of the neighborhood
Erosion has taken place and a lot of the system has flattened out over time

7. Plan View (Ditches in Front Yards)

8. Ditches in Back Yards
The ditch that runs behind the backyards of several occupants also holds water after rainfall
Water should flow out to the city drainage over time, however, the drainage is so slow that it is causing major backups in the system
The woods behind the yards have overgrown in to the ditches, also likely adding to blockage

9. Plan View (Ditches in Back Yard)

10. Culvert System/City Drainage
The point where Dunleith Lane connects to the city is extremely low
Over time, the water draining out of the neighborhood has created an extremely low spot in the city drainage right where the two meet

11. Timeline (Spring 2015)
2/1-Take field measurements of cross sectional areas of ditches
2/27-Proposal
3/19-Begin brainstorming solutions
4/1-Establish most effective solutions
4/7-Draft plans for solutions
4/21-Estimate costs of solutions
4/28-Establish most cost effective solution to problem
5/5-Final Presentation

12. Deliverables Spring 2015
Establish most cost effective method for correcting drainage
Estimate Cost
Create new drawings for solution

13. Possible Alternatives
Correcting Current System
Retention Pond
Directing Drainage to Sharps Road

14. Possible Alternatives

15. Establish Most Effective Solution
Clean current system
Re-grade current system
Clean out subsurface drainage pipes

16. Create Drawings

17. Create Drawings Assign new elevations
Helps Understand where cuts and fills

18. Estimate cost Labor costs Equipment costs Drainage cleaning
2 week schedule
15% Markup

19. Cost Estimate

20. THE END