The City of San Leandro developed a spot repair project for its sewer system using PACP coded videos of pipe inspections. Managing the large amount of video data was difficult without specialized software. The city used T4 Underground software to display the PACP coded videos and inspection notes on an interactive GIS map. This allowed city staff to quickly filter videos based on defect codes to prioritize locations for repair. Viewing defects mapped on the sewer system helped the city identify 49 locations for spot repairs. The project demonstrated that city staff could design repairs in-house using video data organized in T4 Underground.

1. 1AC17 April 25-28, 2017
April 25-28, 2017

2. 2AC17 April 25-28, 2017
Rachél Lather, M.S., P.E.
Nicole Noronha Castelino, P.E.
How the City of San Leandro Developed
a Spot Repair Project
Using City Staff and PACP Coded Videos
April 28, 2017
Too Much Data & Too Little Money
Simple PACP Filtering to Develop CIP
REPLACE WITH YOUR PHOTO

3. 3
Data in the Wrong Format?

4. 4
• It was difficult to take the results of videos and organize them into projects
• Hours of time was needed to do this
• The process is tedious
• Needed to visualize the location of specific defects to make decisions
Needed Help Managing Info –Why?

5. 5AC17 April 25-28, 2017
What t4 Underground Does
• TAKES PACP CODED
VIDEOS AND PLACES
THEM ON GIS MAP
• ALLOWS FOR SORTING
BASED ON PACP CODES
• CAN QUICKLY REVIEW
VIDEOS TO VERIFY THAT
SPOT REPAIR (OR OTHER
WORK) IS NEEDED THERE

6. 6AC17 April 25-28, 2017
Other Benefits:
• KEEPS ALL INFORMATION REGARDING VIDEO, LOCATION,
NOTES, PHOTOS IN ONE PLACE
• ACCESSIBLE TO OTHERS: CAN SHARE VIDEO AND OTHER INFO
THROUGH CLOUD
• EASY TO CREATE WORK PLAN, REPORTS AND MAP OF PROJECT
• CAN EASILY COLLABORATE WITH OTHERS – OPS + ENGINEERING

7. 7
1. Upload GIS map of sewer system with unique manhole
identifiers
2. Upload videos with matching manhole identifiers
3. Start analyzing results
3 Simple Steps Needed to Get Started

8. 8
Step 1 – Upload System Map

9. 9
Step 2- Upload Video Inspections

10. 10
Step 3 – Start Filtering Based on PACP Code

11. 11
Location of San Leandro, California

12. 12AC17 April 25-28, 2017
City of San Leandro, DPW
Sewer Department
• POPULATION SERVED = 60,000 PEOPLE
• MILES OF SEWER = 125 MILES
• 1,200 BUSINESSES AND INDUSTRIES SERVED
• HAVE IN HOUSE CREWS VIDEO SEWERS USING PIC AX
• ASSET MANAGEMENT PROGRAM= SLAM, ICOM3
(MAINTENANCE AND CONDITION ASSESSMENT
DATABASE), T4 SPATIAL

13. 13AC17 April 25-28, 2017
• 75 year old pipe / structural collapse
• Roots
• FOG = Fats, Oils, Grease
Predominant Sewer Issues

14. 14AC17 April 25-28, 2017
Lists, Lists and More Lists

15. 15
PACP Video Data Organized in GIS and Stored in
Cloud Makes it Much Easier to Prioritize Work

16. 16AC17 April 25-28, 2017
Defects and Properties Searched
• HVV :Hole Void Visible
• HSV :Hole Soil Visible
• RBJ :Roots Ball Joint
• OBJ: Obstacles In Joint
• PACP Overall Index>5
• PACO Structural Index>5

17. 17AC17 April 25-28, 2017
Example: HSV Overall>5

18. 18AC17 April 25-28, 2017
Created desired layers

19. 19AC17 April 25-28, 2017
Videos of HSV>5 Located

20. 20AC17 April 25-28, 2017
Click on a Pipe Segment

21. 21AC17 April 25-28, 2017
See Location of Defect

22. 22AC17 April 25-28, 2017
Fast Forward to HSV Location

23. 23AC17 April 25-28, 2017
Still Photo of Collapsed Pipe

24. 24AC17 April 25-28, 2017
Can Look At Problem From
Both Directions
When the camera cannot get through the defect

25. 25AC17 April 25-28, 2017
Two Videos Completed On Same Day
One From Upstream/One From Downstream Manhole

26. 26AC17 April 25-28, 2017
Obstructions Got In the Way
From Downstream Manhole
From Upstream Manhole

27. 27AC17 April 25-28, 2017
Look at problem from both ends
Downstream video Upstream video

28. 28AC17 April 25-28, 2017
Other Defects Found in Filtering PACP Codes

29. 29AC17 April 25-28, 2017
Other Defects Found in Filtering PACP Codes

30. 30AC17 April 25-28, 2017
2015/16 Spot Repair- 49 Locations

31. 31AC17 April 25-28, 2017

32. 32AC17 April 25-28, 2017
LESSONS LEARNED
• Pothole For OTHER UTILITIES early
• Verify Flow Direction Noted by Operators In Video
• City Staff Engineers Can do Their Own Design -without a study
• Filtering PACP Codes Can be Quick and Easy
• Can Collaborate with Operations Staff without Leaving the Office

33. 33AC17 April 25-28, 2017
NEXT STEPS
• Use the PACP Information to develop a 5 year CIP
• Will use to identify & verify the areas needing Root Control
• Will focus FOG program and inspections upstream of grease issues
• LAND USE can (and is ) use t4 to check MAINLINE CONDITIONS near
proposed DEVELOPMENT
• Other Sections of Public Works will Use t4 Underground

34. 34AC17 April 25-28, 2017
QUESTIONS?

35. 35AC17 April 25-28, 2017
THANK YOU!!
Rachél Lather, M.S., P.E.
Principal Engineer
SRT Consultants
(831) 588-1023
Rachel@SRTconsultants.com
Nicole Noronha Castelino, P.E.
Associate Engineer
City of San Leandro
(510) 577-3429
Nnoronha@sanleandro.org