1. 2011 Road School Session 75 Wednesday – March 9th 9:00 am – 9:50 am
1 PDH/.1 CEU

2. CULVERT SLIP LINING Part 1 – LaPorte District Slip Lining- Case Study
Stephen Ritzler
INDOT LaPorte District Project Manager
Part 2 – Flowing More Water with a Smaller Pipe
Scott Brown, EIT
Part 3 – Recent INDOT Specification Changes, Oval Liner
Darin Duncan, PE
Part 4 – INDOT QPA
Sam Martin

3. INDOT LaPorte District Case Study
Stephen Ritzler
INDOT LaPorte District Project Manager

4. Flowing More Water with a Smaller Pipe
Scott Brown, EIT

5. Flowing More Water with a Smaller Pipe
Overview
Pipe liners are smoother than the existing
A smoother pipe means higher velocity
A higher velocity means a higher flow
Under inlet control conditions, pipe smoothness becomes a minor factor – the end area/geometry become the key factors

6. Flowing More Water with a Smaller Pipe
Manning’s Equation
Equation that gives flow estimates based on friction of the pipe material, pipe size, and pipe slope
Gives an “apples-to-apples” comparison
Applies to a partially or nearly full flowing culvert

7. Flowing More Water with a Smaller Pipe
Manning’s Equation
Q = Flow Rate/Discharge - gpm
n = Roughness coefficient (Manning’s “n”)
d = Pipe Diameter – in.
s = Slope – ft/ft

8. Flowing More Water with a Smaller Pipe
Manning’s “n”
Coefficient representative of pipe roughness
The smaller the number, the smoother the pipe
The smoother the pipe, the faster the velocity

9. Flowing More Water with a Smaller Pipe
Manning’s “n” Factors
Solid Wall HDPE n = – 0.012
Profile Wall HDPE n = 0.012
Concrete n = 0.012
CMP n = 0.024
Multi-Plate n = 0.035

10. 72” CMP PIPE Slope, s= 0.0025 CMP n = 0.024 Q = 51,475.1 gpm
Flowing More Water with a Smaller Pipe
72” CMP PIPE
Slope, s=
CMP n = 0.024
Q = 51,475.1 gpm

11. 63” OD/59.1” ID HDPE SOLID WALL
Flowing More Water with a Smaller Pipe
63” OD/59.1” ID HDPE SOLID WALL
Slope, s=
HDPE Solid Wall n = 0.01*
Q = 72,967 gpm
*INDOT Hydraulics typically uses 0.01

12. 63” OD/59.1” ID HDPE SOLID WALL
Flowing More Water with a Smaller Pipe
72” CMP
VS.
63” OD/59.1” ID HDPE SOLID WALL
72” CMP Q = 51, gpm
HDPE Solid Wall Liner Q = 72,967 gpm
72,967/51, = 1.42 or 142%
42% Increase in flow

13. Flowing More Water with a Smaller Pipe
INLET CONTROL
Occurs when the culvert barrel can convey more than it can accept
Flow is limited by pipe opening size
Manning’s Equation does not apply

14. 72” CMP under inlet control
HDPE LINER HYDRAULICS
72” CMP under inlet control
106.81

15. 63” Solid Wall HDPE liner under inlet control
HDPE LINER HYDRAULICS
63” Solid Wall HDPE liner under inlet control
107.18

16. 63” Solid Wall HDPE liner under inlet control
Flowing More Water with a Smaller Pipe
63” Solid Wall HDPE liner under inlet control

17. Flowing More Water with a Smaller Pipe

18. 72” CMP under inlet control
Flowing More Water with a Smaller Pipe
72” CMP under inlet control
106.81

19. 63” Solid Wall HDPE liner under inlet control
Flowing More Water with a Smaller Pipe
63” Solid Wall HDPE liner under inlet control
106.71

20. 63” Solid Wall HDPE liner under inlet control
Flowing More Water with a Smaller Pipe
63” Solid Wall HDPE liner under inlet control
106.81
106.71

21. Flowing More Water with a Smaller Pipe

22. Flowing More Water with a Smaller Pipe

23. Flowing More Water with a Smaller Pipe

24. Flowing More Water with a Smaller Pipe
Energy Dissipator

25. Dubois/Perry Counties
Flowing More Water with a Smaller Pipe
Vincennes District
INDOT Designer:
Richard Thomas
Dubois/Perry Counties
I-64

26. Flowing More Water with a Smaller Pipe

27. Flowing More Water with a Smaller Pipe

28. Flowing More Water with a Smaller Pipe

29. Flowing More Water with a Smaller Pipe

30. Recent INDOT Specification Changes, Oval Liners
Darin Duncan, PE

31. INDOT Standards Committee
February 17, 2011
Problem: For the past 4 years, the 725 specification section in the book has been superseded with RSP 725-R-541.
Solution: Incorporate the modified 725-R-541 provision into the SS book to replace the existing 725 section

32. INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
1. OVAL LINER ADDED

33. 2. TYPE A CERTIFICATION REMOVED
INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
2. TYPE A CERTIFICATION REMOVED

34. 2. TYPE A CERTIFICATION REMOVED – CONT’D

35. 2. TYPE A CERTIFICATION REMOVED – CONT’D

36. 2. TYPE A CERTIFICATION REMOVED – CONT’D
QCP Plan is a major factor in getting on the approved list.

37. 3. OVALING MANUFACTURING REQUIREMENTS
INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
3. OVALING MANUFACTURING REQUIREMENTS

38. 4. QUALITY CONTROL CHANGES - INSPECTIONS
INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
4. QUALITY CONTROL CHANGES - INSPECTIONS

39. 5. PIPE CLEANING AND INSPECTION
INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
5. PIPE CLEANING AND INSPECTION

40. INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
6. SIZING
ALL OF CHART DELETED

41. 7. PAY ITEM – SF OPENING, NOT DIAMETER
INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
7. PAY ITEM – SF OPENING, NOT DIAMETER

42. INDOT Standards Committee
February 17, 2011
NOTABLE CHANGES:
8. BULKHEADS

43. OVALED LINERS:
Solid Wall HDPE Only

50. INDOT QPA
Sam Martin