Economical and Sustainable Option To Open Cut … · Economical and Sustainable Option To Open‐Cut Construction David S. Pyzoha, P.E., BCEE. SMALL ... 2”-10” 73%

Ohio WEA‐AWWA 2014 Technical Conference & Expo

Columbus, Ohio

Small Diameter Water Main Rehabilitation

Economical and Sustainable Option

To Open‐Cut Construction

David S. Pyzoha, P.E., BCEE

SMALL DIAMETER WATER MAIN REHABILITATION | Economical and Sustainable Option to Open-Cut Construction | David S. Pyzoha, PE,BCEE

Era of Water Main Renewal Options

CIPP Process

CIPP Application Assessment

Conclusions


Major Financial Challenge Over $325 Billion to Upgrade Existing Mains On Average - US Water Utilities replace

about 0.5% of their Assets Annually Extrapolated this would result in many

mains exceeding 200 years in age Small Mains: < 16 inches

Distribution Mains: 2”-10” 73% Transmission Mains: 12”-16” and greater 16.1% Large Mains: 18”-24” 3.4%

30” – 48” 6.7%over 48” 0.8%


Pipe Materials Cast Iron - 39.6% (Corrosion Internal and External;

Primary material up to 1955)

Ductile Iron – 21.9% (1955; 1975 Cement Mortar Lined; External Protection)

Asbestos Cement Pipe – 15.8% (popular 1940-1970; stopped in 1983); No Corrosion; removal issues)

PVC – 13.2% (since late 1970’s; no corrosion; good chemical resistance; permeation and hydrocarbons in soil)

Other (steel, PCCP) – 9.5%


Repair - Short Term Solutions to Fix Breaks and Leaks Used when the Existing Pipe can be restored to a structurally

sound condition, provides acceptable flow capacity and good water quality.

Open-cut Spot and Joint Repairs

Replacement – Complete renovation is required Open – Cut Trenchless – HDD & Pipe Bursting*

Rehabilitation- Existing main is part of the solution Corrosion protection, partial deterioration, pipe acts as a right-of-

way for installation Non-structural Lining (Cement Mortar Lining) Structural Lining (CIPP)


• Avoiding Need for Easements;• Improve Water Pressure;• Improve Water Quality• Improve hydraulic characteristics;• Avoid patching newly paved road;• Minimize collateral impacts to reinstate

service connections, e.g. trees


• Minimize construction related social and environmental impacts;

• Minimal impact to existing utilities;• Reduced traffic control;• Safer construction environment;• Speed up Construction;• Save $$$$$$.


Columbus, Ohio



Sanexen: AQUA-PIPE (Canada)

Sekisui SPR: NORDIPIPE (Belgium)

Insituform: INSITUMAIN (USA)

All NSF/ANSI 61 Approved





Typically: 6 ft x 9 ft, and 12 in below pipe Excavated at hydrant and valve locations Trench boxes or shoring


Criteria Clean to bare metal Dry surface





Pig LauncherPig Receiver


Since the water main has been given a new life span of 50 years, most utility owners take the opportunity to replace some accessories of the rehabilitated sections

Typically, new valves and hydrants are installed


Carried out before reinstatement of service connections

ASTM F1743 section 8.3:Lesser of : Pt = 2 x Pw

or Pt = Pw + 50 psi



As per AWWA standards or Utility regulations.


Corrosion resistant Increased pressure & flow capacity

Hazen Williams coefficient > 120 Seamless / woven liner Water Tight

Proven and successful robotic reinstatement of service connection

90 & 100 % success rate

Major Benefits


Low Carbon Dioxide emissions.

• Rehabilitation costs generally less expensive than traditional open cut (15 to 50% savings)

• Reduced # of pipe breaks ($)• Reduced water loss ($)• No further intervention on rehabilitated water mains



Columbus, Ohio




# Project Number





PROJECT NUMBER 1 2 3 4 5PROJECT COOKE RD. COLERAIN AVE. FAIRLAWN DR. VILLAGE DR. SCHREYER PL.

ATTRIBUTESIndianola Ave. to valve 450 ft

west of Colerain Ave.Cooke Rd. to Schreyer Place Colerain Ave. to Village Drive Fairlawn Drive to Colerain Ave. Sharon Ave. to Indianola Ave.

Replacement Main Size (6‐in) 1150 ft 1100 ftReplacement Main Size (8‐in) 1250 ft 2500 ftReplacement Main Size (12‐in) 1950 ft

Main Location Off North edge of pavement 4 ft‐6 ft off West R/W Line 4 ft off North R/W Line 5 ft off South R/W Line4 ft‐6 ft off South R/W Line

East of Colerain; 5 ft off North R/W West of Colerain

Hydrants Replace ‐ 5 Replace – 3 Replace ‐ 2 Replace ‐ 3 Replace ‐ 7Right‐of‐Way (ft) 60 50 50 50 50Pavement Width (ft) 26 26 26 26 26Pavement Condition Poor Good Good Good GoodSidewalks No No No No NoCurb & gutter (yes/no) No Yes Yes Yes YesStreet Parking No Yes Yes Yes YesTraffic Conditions (H,M,L) High Low Low Low MediumExisting Water Main Size‐Age (1‐2 in)

(6‐inch) X ‐ 55+ X ‐ 55(8‐inch) X ‐ 65+ X‐ 55+ X ‐ 55+(12‐inch) X ‐ 65+

Sanitary Sewer Location 8" In Pavement from Indianola Ave.to Eastlea Dr.

1‐10" Crossing North of Cooke Rd. before Fairlawn Dr.

2‐ 8" Crossings west of Cooke Rd.

North Side of R/W parallel to pavement w/ 1‐ 8" crossing

North side of R/W; 2‐crossings possible

Storm Sewer LocationPossible crossing or offset to

12" ‐ 24" on North Side Indianola Ave. to Lawnview Dr.

1‐30" Crossing North of Village Dr.

South side of R/W near curve to Village Dr.; Possible 18"

crossing

18" crossing possible in curve area

12" crossings at Colerain Ave.; 24" crossing and Eastlea Dr.; 3 other 12" crossing possible

Gas Lines North Side ? ? ? ?Overhead Utility Line Impacts South Side None None None NoneTree Proximity Affecting Construction Mostly South Side On Private Property Some near R/W On Private Property On Private Property

Enviornmental Methods/Techniques Possible Possible Possible Possible Yes

CommentsThree sewer crossings Prior water service break Speed bumps at intersections;

school traffic on west half of street; 7‐8 sewer crossings

Project Area Attributes Summary


Streetscape Changes

Changing Location of Existing Utilities

Water Main –Age, Material, Appurtenances, Condition

Street Length, Intersections, Curvature, Grade

Traffic Conditions – Traffic Calming

School Nearby


Open‐Cut/HDD

CIPP LiningPipe Bursting



Rehabilitation Assessment CIPP Lining



Prepare a Technical Design Report Assess project segments on their own merits Innovative Sustainable Methods should be considered CIPP has proven to reduce project cost by 10-50% Perform a Triple Bottom Line Evaluation CIPP may likely be only part of the total solution Water Utilities should initiate a pilot project (1500 ft) Continue to monitor improvements to CIPP and other

innovative and sustainable methods that may evolve.


Columbus, Ohio

QUESTIONS

David S. Pyzoha, PE,BCEE513-563-7600 office

937-478-7335 [email protected]


Schreyer Place (Open Cut ‐ Pavement)Item No. Spec No. Item Description Est. Qty. Unit Unit Price Amount

1 252 Permanent Pavement Replacement 903 CY $ 475.00 $ 428,819.44

2 252 Driveway Pavement Replacement 0 CY $ 260.00 $ ‐

3 253 Temporary Pavement 11 SY $ 10.00 $ 111.11

4 254 Pavement Planing 3611 SY $ 3.00 $ 10,833.33

5 404 1‐1/4" Asphalt Concrete 0 TON $ 101.00 $ ‐

6 407 Tack Coat, Bituminous 0 GAL $ 3.00 $ ‐

7 413 Crack Sealing, Hot Applied 2500 FT $ 3.25 $ 8,125.00

8 614 Maintaining Traffic 1 LS $ 5,000.00 $ 5,000.00

9 659 Seeding and Mulching 111 SY $ 3.50 $ 388.89

10 801 8‐Inch Ductile Iron Water Pipes and Fittings 2500 LF $ 118.00 $ 295,000.00

11 802 8‐Inch Valves and Appurtenances 7 EA $ 1,200.00 $ 8,400.00

12 805 3/4" Water Service Tap, Transferred (Long) 24 EA $ 1,700.00 $ 40,800.00

13 805 3/4" Water Service Tap, Transferred (Short) 24 EA $ 1,077.00 $ 25,848.00

14 809 Fire Hydrant 5 EA $ 2,640.00 $ 13,200.00

15 SPECIAL Removal and Replacement of Existing 8" Valve 7 EA $ 2,700.00 $ 18,900.00

16 SPECIAL 8‐Inch Water Main Cleaning and CIPP Rehabilitation 0 LF $ 140.00 $ ‐

17 SPECIAL Sediment and Erosion Control 1 LS $ 2,000.00 $ 2,000.00

Total $ 855,425.78 Contingency (10%) $ 85,542.58

Total Cost $ 940,968.36

$ / Linear Ft $ 376.39


Schreyer Place (Lining ‐ Pavement)Item No. Spec No. Item Description Est. Qty. Unit Unit Price Amount

1 252 Permanent Pavement Replacement 3 CY $ 475.00 $ 1,319.44

2 252 Driveway Pavement Replacement 0 CY $ 260.00 $ ‐

3 253 Temporary Pavement 11 SY $ 10.00 $ 111.11

4 254 Pavement Planing 0 SY $ 3.00 $ ‐

5 404 1‐1/4" Asphalt Concrete 1 TON $ 101.00 $ 77.93

6 407 Tack Coat, Bituminous 2 GAL $ 3.00 $ 5.00

7 413 Crack Sealing, Hot Applied 0 FT $ 3.25 $ ‐

8 614 Maintaining Traffic 1 LS $ 5,000.00 $ 5,000.00

9 659 Seeding and Mulching 111 SY $ 3.50 $ 388.89

10 801 8‐Inch Ductile Iron Water Pipes and Fittings 100 LF $ 118.00 $ 11,800.00

11 802 8‐Inch Valves and Appurtenances 7 EA $ 1,200.00 $ 8,400.00

12 805 3/4" Water Service Tap, Transferred (Long) 24 EA $ 1,700.00 $ 40,800.00

13 805 3/4" Water Service Tap, Transferred (Short) 24 EA $ 1,077.00 $ 25,848.00

14 809 Fire Hydrant 5 EA $ 2,640.00 $ 13,200.00

15 SPECIAL Removal and Replacement of Existing 8" Valve 7 EA $ 2,700.00 $ 18,900.00

16 SPECIAL 8‐Inch Water Main Cleaning and CIPP Rehabilitation 2400 LF $ 140.00 $ 336,000.00

17 SPECIAL Sediment and Erosion Control 1 LS $ 2,000.00 $ 2,000.00

Total $ 461,850.38 Contingency (10%) $ 46,185.04

Total Cost $ 508,035.41 $ / Linear Ft $ 203.21


Documents

Economical and Sustainable Option To Open Cut … · Economical and Sustainable Option To Open‐Cut Construction David S. Pyzoha, P.E., BCEE. SMALL ... 2”-10” 73%