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CLICK, LISTEN & LEARN INSTRUCTIONS - This email contains the following information: login instructions, handout information, tests, equipment requirements, and other essential information. TITLE: Trenchless Technology WHEN: Thursday, January 10, 2008 - 8:00am PST/ 9:00am MST/ 10:00am CST/ 11:00am EST. The program will last for two hours. If you have a question about the time differences or unsure about your time zone, please go to the following link for assistance: http://www.timezoneconverter.com/cgi-bin/tzc. EQUIPMENT REQUIREMENTS: You will need a computer with Internet connection using Internet Explorer for the visual portion and for the audio portion, you will need a speaker phone. If you are hosting a group, you will need an LCD projector. TECHNICAL REQUIREMENTS: You must meet the following requirements to promote a successful connection. Operating System: Windows 98, NT 4.0, ME, 2000, or XP Browser: Internet Explorer 6.0 or later, Firefox 1.5, Safari 2.0. *WARNING: Pop-up blocking and virus scanning software may interfere with your ability to connect to the Internet portion of this program. Check with your IT department for details. TESTS: (You must be on the computer you will be using on the day of the program when you perform these tests.): BROWSER TEST: Click the link below to ensure your web browser is up-to-date and configured correctly; this must be completed on the computer or laptop you will be using on the day of the program: http://lobby.mc.iconf.net/gcc/bt.asp?ba=6&new40test=t&NextUrl=http://www.genesys.com/browsertestsuccess Your browser test is successful if you have not received any error messages and you get a pop-up box that reads, "The Web page you are viewing is trying to close the window. Do you want to close this window?" Go ahead and close the window. For optimal viewing, set your screen resolution to 1024 x 768. INSTRUCTIONS FOR DAY OF PROGRAM: You may join the conference at least 30 minutes before the program starts. 1. On your computer, close all applications, except for your web browser. 2. Go to www.apwa.net (alternate link if the APWA website doesn’t load: http://apwa.conferencing.com/ then continue to step 4) 3. Click on the Click, Listen & Learn icon in the purple "Education Calendar" box on the APWA home page (www.apwa.net). This icon will ONLY appear on the day of the program. 4. When prompted for a meeting number, enter 5955215, “Join Meeting as Participant” 5. When prompted to enter your name, you MUST enter the site coordinator’s name in the following format (last name, first name – state abbr.) i.e. Smith, John – MT. 6. Next select the audio option “Dial In Now” and the phone number will appear on your screen. Be sure to do step 3 to identify yourself. Then click on “Continue” to join the meeting. CEU INFORMATION: Anyone participating fully in this program at your site is eligible for Continuing Education Units (CEU) if you choose to participate. To process their request, YOU or the person who registered for the program must sign the CEU form as a witness that the requestor attended the program entirely. The cost of CEU registration is $5.00 USD. CEU requirements for water/waste water operators vary from state to state. Before you send in your CEU application, check with your state certifying agency to see if CEUs from APWA will be accepted. *Exempt Provider Number for the Florida Board of Professional Engineers: EXP 00076 QUESTIONS ON THE DAY OF THE PROGRAM?: Technical Support ONLY - Genesys Technical Support: (800) 305-5208 General Inquiries - APWA Education Dept: (800) 848-2792. PLEASE NOTE: Any inquiries about a refund due to technical difficulties, etc. must be received in writing by APWA ([email protected]) within 3 business days after the broadcast to be considered.

American Public Works Association presents…

Trenchless Technology Thursday, January 10, 2008

8:00 PST * 9:00 MST * 10:00 CST * 11:00 EST Speakers: Arvid Veidmark, III Senior Estimator Specialized Services Company (SSC) Phoenix, AZ

Murvyn Morehead ROW Manager City of Overland Park, KS Moderator/Speaker: Monty Zimmerman Right of Way Manager City of Lenexa, KS

Trenchless Technology CLL 1/10/08 Speaker Bios Arvid Veidmark, III Senior Estimator Specialized Services Company (SSC), Phoenix, AZ As co-owner/senior estimator for SSC, Arvid has more than two decades of operational experience and holds multiple licenses and certifications. He has sponsored over 50 educational seminars and has been consulting on major City improvement projects in the Phoenix metropolitan area since 1997. Specialized Services Co. is an underground construction company specializing in horizontal/directional boring & tunneling, S.U.E. vacuum potholing, mapping & reporting, and trenchless consulting since 1969. Murvyn Morehead ROW Manager City of Overland Park, KS As ROW Coordinator for the City of Overland Park, Kansas for the last seven years and an equipment operator in the maintenance division of Public Works for 13 years prior to that, Murvyn Morehead has a “two sided perspective” – that of what is in the best interest of the city and what can and can’t be reasonably done by the contractor. Morehead has witnessed several methods of trenchless technology employed with variying degrees of success. From a “simple” casing installation to a citywide telecom overbuild, he will present the city’s experiences in the form of a case history. Lessons learned and BMP “do’s and dont’s” will also be presented. MODERATOR: Monty Zimmerman Right of Way Manager City of Lenexa, KS

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Trenchless TechnologyThursday, January 10, 2008

Start Time: 8:00 am PST 10:00 am CST9:00 am MST 11:00 am EST

5

Upcoming Education Programs

• Jan 17 The BEST from the San Antonio Congress

• Jan 31 TARGET Emergency Preparedness #2: DURING the Disaster

• Feb 7 The Black & White of Pavement #3: Construction of Quality Flexible and Rigid Pavements

• Feb 21 Water – A Precious Resource in Diminished Supply

Visit www.apwa.net/Education for more Education Opportunities.

9

Trenchless TechnologyThursday, January 10, 2008

Start Time: 8:00 am PST 10:00 am CST9:00 am MST 11:00 am EST

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Today’s Moderator…

Monty ZimmermanRight of Way Manager

City of Lenexa, KS

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How to Submit a Question for Q&A

1. Type question

here

2. Click “Send”

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Polling Question #1

How many people are listening at your site today?

a. 1-3b. 4-7c. 8-20 all one agencyd. 8-20 multiple agenciese. 21+

13

Today’s Speakers…

Murv MoreheadROW Coordinator

City of Overland Park, Kansas

Arvid Veidmark, IIISenior Estimator

Specialized Services Company (SSC)

Phoenix, AZ14


Specialized Services Company (SSC) Phoenix, AZ

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Utilizing Trenchless Technology

Designing a Successful Underground Construction Project

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Learning ObjectivesReduce the costs of underground pipe installation &

renewal through a greater understanding of trenchlesstechniques.

Create a better developed design approaches for construction, replacement, and/or repair of underground utilities.

Improve quality control through the specification and use of new, alternative equipment.

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What is Trenchless Technology?

• Open Cut – involves digging a trench along the length of the proposed pipeline, placing the pipe in the trench on suitable bedding materials and then backfilling.

• Trenchless Technology (TT) -methods of pipeline and utility installation with minimal amount of surface disruption.

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Trenchless Methods• Auger Boring

• Pipe Ramming

• Pipe Bursting

• Directional Drilling

• Micro Tunneling

• TBM

• BMTA

• Hand Tunneling

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• Location• Soil conditions • Utility to be installed• Length of bore• Depth of bore• Underground/overhead

conflicts

Project Design Considerations

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Location

• Access • Commercial/residential• Trenchless or open-cut• Method• Length of bore• Surface conflicts

Determines

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Geotechnical Report

• Nature of soil• Depth & nature of bedrock• Surface drainage conditions• Groundwater levels

Determines

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Type of Utility

• Size of carrier line• Type of carrier line (DIP, PVC,

HDPE)• Gravity/pressure carrier line• Slope of gravity• Size of casing/wall thickness• Spacers vs. skids• Grout vs. chip

Determines

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Length & Depth of Bore

• Size of bore pit• Depth of bore pit• Shore boxes • Sheet piling

Determines

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Polling Question #2

Do you use a vacuum excavating investigation at the design stage?

a. Yesb. No

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Polling Question #3

Do you require a geo technical report at the design stage?

a. Yesb. No

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• Contact local one-call center• Perform a surface survey for marked & unmarked utilities• Look for visual clues

• Request knowledgeable surveyor

Expose Utility Conflicts

S.U.E. Eliminates Risk!

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What are the risks?

• Redesign costs• Change orders• Extra work orders• Construction Claims• Higher insurance costs• Higher financing costs• Environmental damage• Bad publicity

Conflict due to unreliable data & unforeseen challenges.

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Case Study

Unmarked 12” AC Water Main

Damaged Water Line

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Subsurface Utility EngineeringWhat is S.U.E.?

According to the American Society of Civil Engineers and the Federal Highway Administration

• Branch of Engineering practice developed to manage risk associated with existing subsurface utilities.

Utility mapping Relocation & designCommunication of data to all partiesCost estimatesCreation & implementation of policyTechnology specification (Vacuum)

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Why Use Vacuum?

• Safest method available to expose existing utilities.

• Utilizes 95% air vs. water• High powered vacuum • Small footprint• Eliminates spoils disposal• Environmentally sound• More cost effective than alternatives,

in most cases

Reduces risk of conflict.

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Cost Benefits S.U.E.

For each $1.00 spent on the use of

subsurface utility engineering services on

street and highway projects, the overall

project experienced a savings of $4.62.

Federal Highway Administration study completed in 2000

Brochure available at www.fhwa.dot.gov/design/sue/suebrochure.cfm

S.U.E. adds value, quality, and accountability.

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Trenchless TechnologySpecify & utilize the latest methods.

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Auger Boring• Cost effective method of installing steel

casing pipe where it crosses a road, highway or railroad track.

• Simultaneously jacks a steel casing from a drive pit through the earth while removing the spoil inside the encasement.

• After installation of the casing, which supports the soil around, a pipe is installed and the annular space filled.

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BMTA• For applications where line and grade are critical and tunnel diameter is greater

than 48 inches.

• Cutting head is individually powered, separate from the power supply of the boring machine itself.

• Electric over hydraulic controls provide maximum controllability of line and grade. The boring machine provides the BMTA with thrust and auger spoil removal.

BMTA's range in size from 42" to 96" and are suited for soft ground steel cased bores.

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Horizontal Directional Drilling• Mainly used for installation of pressure pipelines and cable conduit.

• Involves steerable systems for installation of both small and large diameter pipeline. Unique ability to track the location of the drill bit and steer it during the drilling process.

• Two stage process. First-drilling a small pilot hole along desired centerline. Second-enlarge pilot hole to desired diameter to accommodate utility line.

Methods are classified as min-HDD, midi-HDD, and maxi-HDD

43

Pipe Ramming• Mainly used for installation of utilities for road and railroad

crossings.• Uses air compressor which hammers a steel casing pipe

inside the earth from a drive pit.• Pipe may be hammered closed-end for less than 8 inches.

Or open-end for 8 inches or more.• Spoil is pushed out of steel casing using air pressure.

44

Pipe Bursting• Used to renew sewer, water, gas, and other

pipelines to upsize the capacity of existing pipeline.

• Used in situations where it is not possible to open-cut or where excavation is very expensive.

• New pipe is either pushed or pulled through at the same time.

46

Tunnel Boring Machine (TBM)• Equipped with hydraulic or electrically driven rotary cutter

heads or disc cutter.• Cut soil is forced inside shield through slits in cutter head as

the shield is advanced.• Provide much improved face stability during soil excavation.• Most suitable for non-cohesive soils below water table.

47

Pilot-Tube Boring (PTMT)• PTMT alternative to conventional

microtunneling. Combines accuracy of microtunnelling, steering mechanism of directional drill, and spoil removal system of auger bore.

• Employs auger and guidance system, using camera mounted theodolite and target with electric light emitting diodes (LEDs) to secure high accuracy in line and grade.

48

PTMT In the 1st phase, a steerable pilot tube is jacked into the ground displacing the soil.

The 2nd phase installs a temporary steel casing.

The 3rd phase the product pipe is installed.

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Hand Tunneling•Simplest form of soil excavation using picks, shovels, or pneumatic hand-held tools.

50

Open Cut – Cost & Benefits•Generally speaking, is the lowest cost method.

•Well suited for open areas with undeveloped land and few buried obstacles.

•Most cost effective solution in circumstances where traffic disturbance/detour is unavoidable regardless of the method used.

51

Trenchless – Cost & Benefits• Minimizes disturbance to traffic, living, and

working areas. • Reduces chances of interfering with or damaging

existing utilities or abandoned pipes. • Provides the opportunity to upsize a pipe-within

technology limits.• Requires less-exposed area which is safer for

workers and the community. • Most cost-effective when considering the risk of

alternative methods.

52

Closing Remarks

• Construction manager @ risk, design-build• Choose reliable contractor/subcontractor that offers S.U.E. Engineering

services• Include in planning stage• Understands underground challenges• Can request blue stake• Will reduce/eliminate costly conflicts

Use a single source for design, planning & delivery.

53

Q&A

54


1. Type question

here

2. Click “Send”

5 Minute Break Program will resume in 30 seconds

57


City of Overland Park, Kansas

58

Polling Question #4

Is trenchless technology being used in your area?

a. Yesb. No

59

Trenchless TechnologyA Case Study

60

Overland Park• 2nd largest city in Kansas – suburb of KC• Population of 170,000• Encompasses about 65 sq. miles• 1,680 lane miles• $20 + million annual Public Works budget• City owns storm sewer system, street

light/signal systems and fiber optic network

61

Overland ParkHome of Sprint World Wide Campus

62

Overland ParkAlso has a few of these left….

63

What I intend to cover:• Types of trenchless technology used in

Overland Park

• Experiences (good and bad) with each type

• Lessons learned

64

Why use Trenchless Technology?

To prevent this:4 lane thoroughfarereduced to two lanesof traffic

65

Why use Trenchless Technology?And this…

66

Why use Trenchless Technology?And this

67

Why use Trenchless Technology?And avoid this

Backfill compaction and testing canbe time consuming and costly

68

Overland Park has experienced 4 primary methods of trenchless technology;

•Auger Boring – used for casing installations•Pipe Bursting – used for pipe replacement•Slip Lining – used for pipe replacement•Horizontal Directional Drilling and Pneumatic Piercing Tools – used for pipe and cable installations

69

Auger BoringUsed primarily for road

crossings

70

Auger Boring

Benefits• Prevents traffic flow problems• Prevents damage to street – even the best

repair is still a “patch”

Disadvantages• Large area needed for entry and exit pits• “Working blind”

71

Pipe Bursting• Pipe Bursting has been used primarily to

replace water lines• Methods vary but operation used in OP

employed a winch assisted/pneumatic powered bursting head pulling in HDPE butt-fused pipe

• Open street cuts still necessary to install Tee’s and valves

72

Pipe Bursting

73

...and the street repair

74

Things DO go wrong…

Failed electro-fusion coupling

75

Pipe BurstingBenefits• Sporadic excavations in street rather than

continuous open trench• Shorter duration traffic flow problems

Disadvantages• Possibility of crushing adjacent lines• “Working blind”

76

Slip Lining• New method of water line replacement• Made possible due to opportunity to

downsize pipe• 1,350’ 8” diameter HDPE pipe pulled in place

in just over 4 hours• As with pipe bursting, open street cuts are

still necessary

77

Slip Lining – the initial stages

78

Slip Lining in progress…

HDPE being pulled intohost pipe

79

The Finished Product

80

Slip Lining

Benefits• Sporadic excavations – can be plated and

street reopened daily• Pipe installation is relatively fast

Disadvantages• Can only be used when installing smaller

diameter pipe• “Working blind”

81

HDD and Missiles

• Horizontal Directional Drilling (HDD) andPneumatic Piercing Tools (Missiles) are by far the most predominant methods of trenchless technology used in Overland Park

• Both processes lend themselves very well to installation of coax, copper and fiber optic cables.

82

The HDD Operation• Bore out to termination point

– Typical bore length is 500 ft.

• Pre-ream if needed to increase bore diameter– Mixing (removes soil) vs. compaction (displaces

soil) reamer– Problems can arise if this step is neglected

• Pull back product

83

The drill

84

Pre-reaming equipment

85

If pre-reaming is neglected…

This can be the result86

And the repair can be costly

Diamond Grind Profile Milling

87

Product pullback

88

The Missile Operation• Rectangular pits dug approximately 20’ apart • Pneumatically powered non-steerable missile

is lowered into pit and through percussive effect moves through the soil to exit into the next pit

• Conduit/cable is then manually pulled through newly created tunnel

89

Missile operation

Missile

90

Missile operationMissileAir compressor

91

Missile operationMissileAir compressorProduct pullback

92

Missile operation

“Not a pretty sight”

93

Before and After

94

HDD and MissilesBenefits• Minimal surface restoration• Relatively fast operations• Well suited for confined working areas

Disadvantages• Missile method is very labor intensive• “Working blind”

95

Telecom work in Overland ParkWe have had two major telecom related

construction projects –

1. A 12 mile long 16 HDPE conduit (18”diameter) backbone ring along major corridors in 2000

2. A 5 year duration “Last Mile” overbuild project begun in 2002 in which each residence/business can be served…also known as FTTP or FTTH.

96

These two projects more than anything identified the need for changes in our Standard Operating Procedure thus

bringing us to

“Lessons Learned”

97

Lessons Learned1. The disadvantage common to all 4

trenchless methods is “working blind” – our most painful lesson learned is it isABSOLUTELY MANDATORY to positively visually locate ALL known existing utilities.DO NOT rely on marking paint or locate flags. When utilities are damaged, badthings happen…

98

Damages

99

More damagesWhen you damage a waterline…

There will be a mess

100

…still more

Unknown obstacle causeddrill stem to flex

Unlocated PVC water line

101

Major damage• 30” water

transmission main• $86,000+ street

repair cost• Damage caused

contractor to go out of business

102

10,000+ cars per day affected by closed lanesfor 3 weeks

Water under 125psican do this…

103

Locating utilitiesWhile underground utilities can be located using this method…

104

Locating utilitiesNon-destructive Vacuum Excavation is the preferred method

Trailer mounted unit Large truck mounted unit

105

Locating utilitiesThis 30” deep hole to locate a cable TV line was completed in 26 seconds using hydro vacuum excavation

106

Lessons Learned2. With many utility lines

under pavement that need to be visually located prior to any trenchless activity andto avoid this…

107

Lessons Learned• We now mandate all explorations/

investigations for/of utilities under pavement use the coring/keyhole and reinstatement method.

• This method consists of core drilling through pavement, using vacuum excavation for sub grade removal until utility is found, backfilling with CLSM and grouting core back in place.

108

Coring-Keyhole process

Core being drilled

109


4 small holes as opposed to the large excavation that would normally occur

110


Sub grade removal

111

Coring-Keyhole processSteel plate used to temporarily cover core hole is:

•Easily placed

•Virtually impossible to slide out of place

•Maintenance free

•Very low cost

112


Backfilling with CLSM (Controlled Low Strength Material)

113


The finished product

114


Which would you prefer on your streets?

115

Coring-Keyhole vs. Traditional Jackhammer/Backhoe method

Benefits• Substantially shorter duration traffic interruptions

(i.e. lane closures)• Far less damage to street• Much faster operation• Much cleaner operation• Fewer and smaller pieces of equipment needed• Reduced repair costs for contractor

Disadvantages• ?

116

Lessons Learned• Contractor must have emergency response plan –

911 may not be the first call• Establish minimum bore depths especially under

pavement (i.e. HDD Guidelines Handbook)• Determine timeline for potential repairs (street,

sidewalk, etc.) prior to beginning work• Use all methods available to determine presence of

existing utilities (mapping, GPR)

117

For more information

www.opkansas.org

118

Final Q&A

119


1. Type question

here

2. Click “Send”

120

Today’s Speakers…


City of Overland Park, [email protected]

www.opkansas.org


Specialized Services Company (SSC)

Phoenix, AZPhone: (602) [email protected]

Fax to: 816-472-0406, OR Mail to Attn. Carrie Merker, APWA, 2345 Grand Blvd., Suite 700, Kansas City, MO 64108

American Public Works Association

Trenchless Technology January 10, 2008

Please rate your overall experience with today’s program:

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After viewing this program, I am now better able to improve the design approach for construction, replacement and/or repair of underground utilities. 1 2 3 4 Strongly Disagree Strongly Agree My role is: aaa � Director/Commissioner/Superintendent/Assistant Director of P.W. � Public Works Supervisor/Manager � Engineer in a public agency � Consulting Engineer/Manager � Field/Construction Personnel � Other

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The American Public Works Association CEU REQUEST FORM

“Trenchless Technology” January 10, 2008

This program has been awarded 0.2 CEUs. You must attend the entire program and have this form signed by your Site Coordinator to be eligible for CEUs.

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By signing this form, I acknowledge that the aforementioned person attended this Click, Listen & Learn program in its entirety.

*CEU requirements for water/waste water operators vary from state to state. Before you send in your CEU application, check with your state certifying agency to see if CEUs from APWA will be accepted. The cost of the CEU registration is $5 USD and please either mail this form with the payment to: American Public Works Association, P.O. Box 802296, Kansas City, MO 64180-2296 OR pay with credit card and fax to (816) 472-1905 . Through email, you’ll be notified when your CEU Transcript is processed and available for secure download via APWA’s web site at http://www.apwa.net/Education/CEU . Please direct CEU questions to Courtney Thompson at (800) 848-2792 or [email protected] Name on Card: Authorized Cardholder Signature: ___ ___ ___ ___-___ ___ ___ ___-___ ___ ___ ___ -___ ___ ___ ___ (VISA or MasterCard) ___ ___ ___ ___-___ ___ ___ ___ ___ ___-___ ___ ___ ___ ___ (American Express)

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Excavation in the Right-of-Way: A Guide to Coordination & Regulation65 pp • 1996 • APWA

This book reviews the need for coordinating and regulating activities within the public right-of-way and recommends guidelines for establishing the needed implementation mechanisms (with sample ordinances).PB.AERW • Member $13.50 /Non $22.50

Trenchless Technology Applications in Public Works238 pp • 1998 • APWA • Contributors: U.S. Army Corps of Engineers, Trenchless Technology Center

This book includes specific references to public works applications, a discussion of pipebursting and case studies. This publication also discusses cured-in-place pipe and mini-horizontal directional drilling, and evaluates methods and materials for installing underground utilities.PB.ATRN • Member $27 /Non $36

Trenchless Technology and Directional Boring2004 • APWA • CD-ROM

Whether repairing the existing utilities or installing new ones, trenchless technology is available. Examine Richmond, Virginia’s policies and guidelines for trenchless and boring operations that were developed to mitigate damage to neighboring underground utilities. Program includes several trenchless technology applications. PB.E410 • Member $26.10 /Non $35.10

Why Manage the Public Right-of-Way? 22 pp • 2001 • APWA

The ground is already crowded below our public rights-of-way; don’t let your agency perpetuate the chaos. This informative booklet outlines the issues surrounding coordination of current and future use of rights-of-way to ensure that vital public needs can be served. Bulk discounts available.PB.AWMP1 • Member $4.50 /Non $6.30PB.AWMP (Package of 5) • Member $18 /Non $25.20

Trenchless Technology: Pipeline and Utility, Design, Construction, and Renewal 489 pp • 2005 • The McGraw Hill Companies • Mohammad Najafi

This comprehensive reference covers the latest techniques and materials for high-demand trenchless technology methods. Offering practical

procedures, details on new tools and techniques, and analysis methods that can save pipeline owners, municipalities, and utilities thousands of dollars in costs and weeks of surface disruption, this valuable resource offers dig-free answers that will help planners and engineers.PB.X611 • Member $103.50 /Non $108

New! Trenchless Technology 2008 • APWA • CD-ROM

Trenchless technology’s expanded applications can lower project costs and prevent damage. Topics include

reducing costs of underground pipe installation; improving quality control and developing a better design approach for construction. Whether repairing existing utilities or installing new ones, find out about the trenchless process. PB.E800 • Member $53.10 /Non $62.10

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