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Sinkhole Prevention November 20, 2013 Call in number: 1-800-309-2350 Pass Code: 2369526# 1
Sinkhole Prevention November 20, 2013
Call in number: 1-800-309-2350
Pass Code: 2369526#
1
Your Cooperation is Needed
Please mute your phone *6
To ask questions and open your line *6
This will help all of our friends!
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PSAB’s Blended Training
Webinars
Traditional Classroom Sessions
One-on-One Assistance
3
Upcoming Training
Webinars
Redeveloping Blighted Properties through Land Banking Dec. 4
The Worker & Community Right to Know Dec. 11
Reorganization Meeting Dec. 12
Proper Disciplining of Police Officers Dec. 18
* Free to PSAB Members
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Upcoming Classroom Training
The Course in Community Planning
The Course in Zoning The Course in Subdivision & Land Development Review
Municipal Officials Training & Update The Course in Zoning Administration
Confined Space Training
Newly Elected Officials Training
Register now for
2014 Newly Elected Officials Training www.classes.boroughs.org
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1
SINKHOLES
Their
Why Where When
&
What can we do about them
September 12, 2013
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Who cares about Sinkholes?
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Who Cares About Sinkholes?
Home Owners
Do !
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Who Cares About Sinkholes?
First
Responders
Do !
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Who Cares About Sinkholes?
Cell PhoneTower
Owners do !
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Who Cares About Sinkholes?
Water, Sewer, Gas,
Electric & Steam
Utilities
Do !
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Airport Managers
Do !
Who Cares About Sinkholes?
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Who Cares About Sinkholes?
DOTs do !
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Who Cares About Sinkholes?
Oil & Gas Pipeline
Owners do!
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Lawyers
Do !
Who Cares About Sinkholes?
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Who Cares About Sinkholes?
Everyone
should be concerned
about sinkholes!
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Who is our Guide?
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Our Guide
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A Lifetime of Learning
• 40 years dedicated to understanding subsurface mysteries.
• Graduate Professional Engineer with advanced degrees.
• Has performed & managed over 2,500 projects in over 30 states and such international venues as Spain, Hong Kong, Germany & Italy.
• Performed projects for Fortune 100 companies as well as Government agencies such as: USEPA, Dept. Of Surface Mining, NSF, Battle Labs & Sandia National Labs.
• Assisted in writing industry standards & Handbooks for ASTM & ASNT.
• Published over 80 international technical papers.
• Earned 10+ Domestic & International Patents.
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What Causes a Sinkhole?
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What Causes a Sinkhole?
Mother Nature Man-Made
All Sizes
Any Location
All Sizes
Any Location
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Sinkholes Caused by Nature With a little help from people
Notice the water in each photo
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Sinkholes Caused by Nature
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Sinkholes Caused by Nature
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Sinkholes Caused by Man
Abandoned Mine Tunnels
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Water
&
Sewer
Pipelines
Are prone to leak.
It is not if it will leak,
but when will it leak
Sinkholes Caused by Man
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How can we predict
where a sinkhole will appear?
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How can we predict
where a future sinkhole will appear?
Walk around until you fall into it
Gravity meter
Cone Penetrometer
Deflectometer
Ground Penetrating Microwaves
Infrared based Energy Pattern Analysis
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Ground Penetrating Microwaves
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Ground Penetrating Microwaves
GPM can be a great tool
When used by well trained and experienced engineers
But
It can be a confusing mess for most people.
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Infrared Energy Pattern Analysis
(IR-EPA)
55 Degrees subsurface Energy level
Relative / Energy Levels / Temperatures on ground
surface
Ground surface
72 Degrees air energy level /
Temperature
Preventable for a few pennies
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Great for house size areas
or up to 10 miles of 3 lane roadways per day
Infrared Energy Pattern Analysis
(IR-EPA)
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Infrared Energy Pattern Analysis
(IR-EPA)
Great for small or large pipelines,
Both metallic & non-metallic such as concrete or PVC
& pressurized or non-pressurized
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Infrared Energy Pattern Analysis
(IR-EPA)
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Infrared Energy Pattern
Analysis (IR-EPA)
Great for neighborhoods,
Industrial plants
or city size areas
per day
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LIght Detection And Ranging (LIDAR)
Great for determining
Repeatable target locations & depressions
Accurate to +/- 2 centimeters
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How do we fix Sinkholes
&
Prevent them from returning
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145 lb. per cubic ft.
@ up to 3,000 Pounds per square inch
Preventing and Repairing
Potential Sinkholes
• Too thick to fill pipeline cracks
• Could break through pipe wall
and block flows
• Could damage other nearby
utilities
• Very difficult to remove for
future maintenance
Concrete
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Chemical Grouts
Preventing and Repairing
Potential Sinkholes
Concrete
VS.
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3D Ground Penetrating Microwaves
Tells grouter:
• Where to inject grout
• How much grout will be needed
• Soil saturation & void conditions
Text
Results
• Lower material costs
• Less damage to other utilities
• Less time in the field
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Ultra fast setting grouts can be used to fill pipeline cracks
without blocking pipeline flows
Then slow setting grouts can be used to fill exterior pipe voids
Porous and saturated soils can be stabilized with specialty grouts
Preventing and Repairing
Sinkholes
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Can Grout Support Heavy Loads?
Airport tarmac & runway under-sealing and lifting
Wright Paterson Air Force Base - Runway
Repairs
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Can Chemical Grouting be used in Critical
Locations?
IR-EPA cooling water leak & erosion void detection
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Can Chemical Grouting Be used with
Minimal Mess?
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We need to become conscious of
our
Housing, Water & Sewer utilities
and Transportation Infrastructure
that supports our lives & our way of Life
by a Continuing Effort
To Maintain these Assets.
And if we don’t...
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Our Homes
Will be at
Risk!
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Our lives
Will be at
Risk!!
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and most important . . .
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Our beer
delivery
will be at
Risk!!!
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Questions
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Potential Future Webinar Subjects
• Water & Sewer pipeline leak & erosion void detection techniques
• Hidden Levee weakness Detection techniques
• Sinkhole Characterization (Length, width, height, volume & depth) techniques
• Non-excavation sinkhole & erosion void Repair techniques
• Sinkhole legal ramifications and insurance
In-depth technical discussions &
Vendor recommendations for
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How to contact us
Gary J. Weil P.E., C.P.I.M.
Chief Technology Officer
EnTech Engineering, Inc.
228 Meadowbrook C. C. Way
St. Louis, MO 63011
Direct: 314-409-7844
Main: 636-207-0200
www.EnTechWorld.com
Theresa M. Dickow
PA State Association of Boroughs
2941 North Front Street
Harrisburg, PA 17110
1-800-232-7722 ext. 1042
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Special Thanks to
All those that have worked with me over the years
and who have contributed to my lifetime of learning
&
228 Meadowbrook Country Club Way
St. Louis, MO 63011
Tel: 636-207-0200
560 Mitchell Field Road
Bessemer AL 35022
Tel: 205-461-5747
Support Restoration Technologies
10251 Suspension Bridge Road
Harrison OH 45030
Tel: 513-309-9244
