pipe bursting cmw

7/25/2019 Pipe Bursting CMW

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Potable Water Pipe Rehabilitation with Static PipeBursting Methodology -Consolidated Mutual Water

Company in Lakewood, CO

Dave Holcomb

TT Technologies, Inc.

Richard (Bo) Botteicher, PE

Underground Solutions, Inc.
http://www.tttechnologies.com/index.html


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The pipe bursting process visually:

Pipe Bursting Basics The Process

New

Product

Pipe


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Positioning launch & exit pits

Traffic flow

Safety

Good communication

Minimal disruption

JOB SITE LAYOUT



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Cast iron Clay

Concrete RCPPVC Asbestos cement

Truss Liners

Corrugated pipe

Ductile Iron

Steel

HOST PIPE



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LENGTH OF RUN

Manhole to manhole

Through manholesLonger runs possible

Pipe Bursting Basics


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Original backfill

Expandable clayLoose cobble

Beach & running sand

Densely compacted clay

Sandstone

SOIL CONDITIONS

WORST

EST

I

F

U

L

T

Y



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Small diameter, good soil

Medium diameter

Large diameter

Large diameter, poor soil

BENTONITE LUBRICATION

LW YS

M Y E

U

S



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GRUNDOMUDD

Bentonite Mixing & Delivery System



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UPSIZING ABILITY


Soil conditions

Original trenchwidth

Expand enoughto overcut

Burst depth =10x upsizediameter


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See it to believe it

Rely only on current video

Never burst blind

Communication between all parties

IMPORTANCE OF VIDEO



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Fusion or Electro Fusion Welding

Insert-a Tees

Strap-on Service Saddles

Traditional Corp. StopPE Ball Valve

SERVICE CONNECTIONS



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2 Major Categories of Bursting:

Pneumatic

Fracturable pipes (Cast Iron, VCP)

HDPE Installations

Static Hydraulic

Ductile pipe (Ductile Iron, Steel)Fracturable pipe

Multiple product pipe options

TOOL SELECTION

Pipe Bursting Basics Equipment Considerations


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Pipe Bursting Basics Pnuematic Bursting Head


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Static Pull System

Hydraulically Operated

Roller Cutting Blades Split Pipe

Quick-Lock Bursting Rods

Burst Ductile Iron & Steel + Fracturable

Pull in Numerous Product Pipe Options

STATIC BURSTING

Pipe Bursting Basics Static Bursting Equipment


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STATIC PULL STEP #1

Pipe Bursting Basics Static Bursting Steps


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STATIC PULL STEP #2


NewPipe


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STATIC PULL STEP #3


NewPipe


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Volatile Subject

Stumbling Block to the use of Pipe BurstingMany Utilities Wont Consider certain Pipe Materials

Vested in one Type

Because of Familiarity, History, etc.

PIPE MATERIAL

Pipe Bursting Basics Product Piping


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HDPE Most Commonly Used for Pipe Bursting

Considerable Interest in other Pipe Material optionsOther Options are Available

Bursting Equipment & Pipe Manufacturers WorkingTogether

Developing Real World Solutions

PIPE MATERIAL



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Typical Pipe Characteristics

SectionalJointed

Gasketed

Allows for Some Level of Flexibility

PIPE MATERIAL



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Typical Bursting Application:

Static ProcessHydraulic Puller

Cutting Blade

Expander

Quick Lock Bursting Rods

PIPE MATERIAL



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Client: Consolidated Mutual Water Company

Pipe Bursting in Lakewood, CO

22,000 LF of 6and 8 Fusible C-900 for potable water

Replacing 4 and 6existing cast iron and ductile iron lines

Construction complete for 2010 (April through September)

PipeBursting

Static Hydraulic


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Pipe staging area and fusion process

PipeBursting

Static Hydraulic



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Moving pipe from staging area to install location

PipeBursting

Static Hydraulic



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Pipe Bursting machine

TT Technologies - Grundoburst

PipeBursting

Static Hydraulic



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Pipe bursting pull head/expander

Existing cast iron pipe

New pipe 6 Fusible C-900

PipeBursting

Static Hydraulic



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Installation details:High residential areaService connection pits with temporary by-pass lines set upNo driveways blocked - minimal exception during pull-in (couple of hours)Pulled pipe every Tues & Wed for 4.5 months

Pull lengths approximately 640, half street per day

PipeBursting

Static Hydraulic



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Reduced public impact

small street patches, driveways and landscape not torn up

roads and driveways not blocked for extended periods of time

Used space of existing line

no room to install w/out removing utility

no abandoned lines left in ground to take up more space

PipeBursting



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Open Cut

1128' 6" PVC

Pipe Burst

1160' 6" PVC

Fees: Denver Water $2,831.00 $2,789.00

Permit Fees $601.22 $600.00

Traffic Control & Barricades $0 $0

Labor & Overhead $27,156.00 $29,775.75

Materials $12,411.00 $11,882.20

Road Cut Repairs, Asphalt ETC. $37,759.25 $3,321.23

Pipe Bedding Material $1,401.43 $196.00

Asphalt Cutting $0 $0Pot Hole Utilities $0 $0

Trucking $3,665.80 $0

Compaction Tests $535.00 $0

Cold Mix Asphalt $594.00 $264.00

Engineering & Design $4,712.50 $2,575.00

Misc. Temp. Toilet, etc. $185.63 $233.24

Sweeping $620.00 $0

Road Base $131.75 $0

CHANGEOVERS

Labor $7,832.00 $5,698.50

Material $1,735.15 $1,490.60

TOTAL JOB COST $102,171.73 $58,825.52


Overall Cost is 50% of opencut

Materials similar in cost

Restoration cost

difference Less spoils/select

material and costs

Efficiency is key

Process of temporarywater lines, service

disconnect, install,testing, reconnect wasmaximized for efficiency
http://www.tttechnologies.com/index.html


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Potable Water Rehabilitation with Static PipeBursting Methodology with Consolidated Mutual

Water Company in Lakewood, CO

Thank you for your attention

pipe bursting cmw

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