SlideShare une entreprise Scribd logo
1  sur  4
Télécharger pour lire hors ligne
1
T
he Ministry of Transportation of Ontario (MTO)
is revolutionizing contract management.
With a transportation infrastructure network
valued at over $2 billion annually, MTO requires
efficient information technology to effectively administer
construction and operations work.
Managing the construction, maintenance and engineering
service provider contracts in the Provincial Highways
Management Division currently consists of a variety of
labour-intensive paper-based methods of recording contract
activities in diaries, spreadsheets and databases throughout
the time span of each contract.
A Request for Proposals for the provision of Web-Based
Contract Management Services (WBCMS) was issued in
2013. This innovative approach will result in a much more
streamlined and efficient way of collecting, reporting, and
validating data and creating many new efficiencies through
transformation and automation of various related business
processes.
What is it?
WBCMS is a sustainable solution that will provide an
electronic means to capture field data, transmit and store
data and provide reliable, complete information to decision
makers.
The centrally located service will provide full contract
lifecycle management functionalities through the entry
and tracking of contract information, correspondence and
documents.
Service providers will be able to maintain digital diaries,
electronically record daily activities, and refer to digital
checklists, alerts, notifications and dashboards.
What’s happened?
MTO has entered into an agreement with Aurigo Software
Technologies Corp. to deliver a suite of Web-Based
Management Services. The solution will offer a complete set
of software, all hardware, facilities and services necessary to
host and maintain the application.
Following launch in 2015, MTO, external service
providers and the road-building industry will access the
new system and its services through an internet browser
where they can perform and electronically record activities
associated with all contract administration functions.
“The Ministry of Transportation, Contract Management
Office, is excited to launch this program to achieve
significant efficiencies in all contract management
functions,” said Project Manager Sue Lefebvre.
Who will be using the service?
Internal MTO users as well as external service providers
will utilize the centralized service through a subscription fee
model.
MTO and its users will significantly benefit from this
transformation, as the solution will ease the archiving
and accessibility of vital contract documentation. This
revolutionary change also supports environmental
sustainability.
WBCMS Training
A certified training program will be provided for MTO
and industry staff. The training will ensure a smooth and
quick transition to the fully- automated solution.
Benefits:
•	 Streamline business processes
•	 Reduce risk of inaccuracy as a result of multiple data
entries
•	 Improve consistency in oversight and reporting activities
•	 Improve overall accountability by easily tracking audit data
•	 Support environmental sustainability by reducing the
number of paper-based documents •
Revolutionizing Contract Administration
Web-Based Contract Management Services (WBCMS)
WBCMS will revolutionize the contract administration
functions of contract delivery.
Ontario’s Transportation Technology Transfer Digest
M I N I S T R Y O F T R A N S P O R T A T I O N
A r t i c l e 1 • S p r i n g 2 0 1 4 • w w w . m t o . g o v . o n . c a / e n g l i s h / t r a n s t e k / r o a d t a l k
For more information on WBCMS, contact the
MTO Project Manager, Sue Lefebvre
at Sue.G.Lefebvre@ontario.ca or (905) 704-2617
1
B
efore the Ministry of Transportation (MTO) begins
to design or construct structures or embankments
near environmentally sensitive wetlands, subsurface
conditions are assessed by collecting boreholes at each
subject site. Knowledge of subsurface soil conditions and
their engineering properties are required for the foundation
design to ensure a stable structure. In 2012, the ministry
partnered with various stakeholders to experiment with
geophysical methods as alternatives to boreholes for soil
profiling. It is expected that coupling borehole sampling
with geophysical techniques will greatly improve the
knowledge of subsurface soils especially within difficult to
explore swamp areas.
The ministry uses borehole samples to obtain soil
profile information, but borehole investigation has
limitations. In order to provide adequate subsurface
descriptions, the number of boreholes and their spacing
need to be sufficient. Complex areas suspected of having
irregular variations of soft clay over a firm bottom typically
require additional boreholes. Collecting a large number
of borehole samples to establish a subsurface model can
sometimes be limited by factors such as drilling equipment
access, environmental regulations, and obtaining permission
to enter private property.
To mitigate these constraints, the ministry partnered with
University of Waterloo and Thurber Engineering Ltd. to
test new geophysical techniques and assess their potential to
provide sufficient information on subsurface sediment and
rock layers.
Geophysical techniques are non-invasive explorations
that can be carried out from surface or from within the
boreholes to image subsurface layers. They use energy
and waves to remotely explore ground conditions. Since
physical properties such as magnetism, density, electrical
conductivity and elasticity vary depending on the type of
soil, geophysical methods interpret stratigraphy, the relative
position of strata and their relationship to geological
chronology, by measuring and analyzing the change in
physical properties of materials with depth. Geophysical
methods have the potential to provide more sample points
at less cost than conventional boreholes. A geophysical
test setup for data acquisition can be performed within
a relatively short duration as compared to a borehole
investigation. Geophysical techniques are environmentally
friendly and permit investigation in all seasons. Besides
providing stratigraphical imaging, dynamic properties of
subsurface soils can also be determined from geophysical
tests. The dynamic properties of soils are required for
the analysis of any dynamic loading in geotechnical
seismic design.
The accuracy and resolution of these techniques have
improved significantly in recent years due to advances
in equipment and data processing. Using geophysical
test methods for shallow geotechnical investigations is
increasingly valuable for detecting changes in sediment type
and has been successfully used to delineate bedrock profiles
even in complex geological environments.
In an effort to evaluate the effectiveness of these
geophysical techniques, MTO selected an environmentally
sensitive wetland area in Bowmanville, Ontario, along the
Highway 407 east extension corridor as a study site. The
project involved field measurements along two 188 m lines.>
Deep in the Mire
Geophysical Test Methods Used for Characterizing Wetland Soil
Figure 1: Survey line and borehole locations during
geophysical method testing.
Ontario’s Transportation Technology Transfer Digest
M I N I S T R Y O F T R A N S P O R T A T I O N
A r t i c l e 2 • S p r i n g 2 0 1 4 • w w w . m t o . g o v . o n . c a / e n g l i s h / t r a n s t e k / r o a d t a l k
Ontario’s Transportation Technology Transfer Digest
M I N I S T R Y O F T R A N S P O R T A T I O N
Geophysical Test Methods, continued
2
Line 1 ran south to north, passing west of a pond and
ending near a road. Line 2 ran southwest to northeast along
the southeast side of the pond (Fig. 1). This site was selected
based on the findings from a borehole sample taken prior to
testing, which suggested the presence of soft compressible
soils covered by hard glacial till. Further, the site is located
close to an environmentally sensitive wetland area.
Testing Methods and Procedure
Three methods known as electrical resistivity imaging
(ERI), seismic refraction (SR), and multiple–channel
analysis of surface waves (MASW) were performed to
evaluate the effectiveness of geophysical methods for the
geotechnical site characterization in environmental sensitive
wetland areas.
Method 1: Electrical Resistivity Imaging (ERI)
The electrical resistivity-imaging test is accomplished by
generating a current through the ground and measuring
the resulting potential differences at the surface. The test
requires many measurements, each of them involving four
electrodes. Two electrodes introduce current flow into
the ground and the two different electrodes measure the
electrical changes in the ground due to the imposed current
flow. The resistivity of a material is obtained by measuring
potential differences. Increasing electrode spacing improves
the current penetration depth. Data collected from the
test are interpreted using inversion software, and a two-
dimensional electrical resistivity structure of the ground
below the survey line is generated.
To evaluate the ERI method, a 48-electrode switch
system was used to obtain the resistivity measurements at
the subject site. Electrodes were driven into the ground
along a straight line at a selected spacing for each line (Line
1 and Line 2) with the resistivity meter positioned at the
centre of the line. In addition to the two main lines, a higher
resolution survey was performed on Line 2. This shorter
length survey gave a shallower and more detailed indication
of the resistivity structure of the upper stratigraphy over the
middle part of Line 2.
Method 2: Seismic Refraction (SR)
The SR method measures the velocity of seismic waves
(compression and shear waves) as they travel through
different media at different velocities. The seismic refraction
survey generates seismic waves and records their arrival
times at numerous points on the ground surface. The
SR requires an arrangement of equally spaced velocity
transducers or geophones that measure vertical or horizontal
motion and a seismic source such as a sledgehammer,
weight drop or explosive charge. The SR surveys analyze
the first arrival event at each geophone and the resulting
data are presented as travel times versus distances.
The SR survey was conducted using a 48-channel
seismograph and 48 horizontal geophones. Geophone
sensitivities were verified by mounting them individually on
a shaker and comparing the output response of each to an
accelerometer attached to the geophone casing. Top soil
was removed at the locations of the geophones and the
seismic source to enhance the coupling of the transducers
with the ground. Good coupling is required to increase the
signal-to-noise ratio.
The SR survey was completed along five 47-metre lines:
two along Line 1 and three along Line 2. The shorter
line span was dictated by the geophone spacing necessary
for the required depth resolution. The method required
a 20 m clearance at each end of the transducer array for
placement of the seismic source. A stream to the northwest
of the pond interrupted Line 1. This resulted in only two
seismic survey lines being completed along Line 1. Thick
forest along the south border of the site required Line 2-3
alignment to deviate from Line 2 (Figure 1).
The seismic source was a 5 kg sledgehammer that
generated S-waves by hitting a c-shaped steel plate in the
direction perpendicular to the geophone line. The edges
of the c-plate were partially inserted into the ground to
enhance the coupling between the plate and the ground.
Seismic traces were collected at various source locations
for each line. Source offsets were selected so sufficient
refractions from the shallow and deep layers were obtained.
For each source location, positive and negative polarity
shear waves were generated by hitting the steel plate
in opposite directions. Five blows on either side of the
plate were recorded and stacked to improve the signal-
to-noise ratio.
Method 3: Multiple-Channel Analysis of Surface Waves
(MASW)
The MASW method uses dispersive nature of surface
waves to evaluate soil profiles in multi-layered soils. When
a seismic pulse is created on the ground surface most of the
seismic energy travels in the form of surface waves. Surface
wave velocity depends on the properties of the soil layers
and the frequency of the pulse.
The depth of pulse penetration into the soil is a function
of wavelength (wave velocity = frequency x wavelength),
with longer wavelengths penetrating deeper. The
penetration depth of a surface wave is commonly taken
as one wavelength with most of its energy concentrated
between the surface and a depth of one-third wavelength.
High frequencies, or short wavelengths, propagate at the
velocity of the upper layer whereas low frequencies, or large
wavelengths, propagate at a velocity determined by the
characteristics of subsequently deeper soil layers.
The MASW survey used the same test layout as described
above for the SR method. It was completed with similar >
equipment including 48-channel seismograph and low
frequency geophones. Geophone spacing was 1 m for a total
spread length of 47 m and again the top soil was removed
from the selected source locations and geophone locations
to enhance the coupling with the ground.
Different seismic sources were tested in a preliminary
on-site investigation to select the best source for generating
lower frequencies. The most effective seismic source was an
80-kg weight raised and dropped onto a steel plate using a
tripod-pulley system.
Three source offsets were chosen on either side of
the survey lines. Shorter offset distances were used to
study the propagation of higher frequencies in shallower
layers, whereas the larger offsets were used to study the
propagation of lower frequencies in deeper layers.
Test Results and Discussion
Prior to the geophysical surveys, one borehole sample
was obtained. Five more borehole samples were collected
following the geophysical investigation. A cone Penetration
test (CPT) was completed at four of the borehole locations.
The subsurface information obtained from the borehole
investigation revealed that the site is underlain by a soft silt
and clay layer, a more competent sand and silt layer, and a
soft silt clay overlying the very dense till deposit.
The MASW method identified the inversion of soft and
stiff soils and gave the best indication of the layering in the
area. The maximum average error in the evaluation of the
depth of the hard layer was 30% when compared to the
borehole information. The MASW method predicted depth
to till less accurately than ERI. Using a source that generates
higher energy in the lower frequency spectrum may help
increase the depth resolution for this method.
Results from each geophysical test were analyzed and
compared to the data from the boreholes. Among the three
tested methods, the ERI survey results show the most
accurate prediction of the depth of till layer with less than
19% error. However, the ERI resolution was not sufficient
to accurately predict the upper strata. Electrical conductivity
is affected by porosity, degree of saturation, concentration
of dissolved electrolytes in the pore water, temperature of
the water in the pore spaces, and amounts of clay minerals
and colloidal material, making it difficult to determine the
physical characteristics of soils or rocks from resistivity
surveys alone.
The depth of the till layer could not be obtained accurately
using SR survey due to the presence of a relatively stiff sand
and silt over a soft silty clay layer. One significant limitation
of the seismic refraction survey is the inability to determine
inverse layering, or wave velocity decreasing with depth. The
SR method overestimated the till depth.
Information from the three geophysical test methods
assisted in evaluating the depth of the hard layer, with errors
between 10 and 23 per cent. On average, the till layer depth
is underestimated compared with the values from borehole
information. The transition zone between the silty clay
layer and the hard till layer is stiff enough to generate a
significant increase in shear wave velocities, resulting in
the geophysical methods detecting the till layer before
the borehole data does.
Future use of Geophysical Testing for MTO Projects
Test results showed the three geophysical methods have
potential to provide accurate and cost-effective subsurface
modeling of soils and the depth to a competent layer. They
are capable of successfully indicating depth to a competent
layer when compared to borehole samples at the study
site. These test methods have the potential to bridge
information gaps between boreholes when borehole drilling
is constrained by various factors. •
Ontario’s Transportation Technology Transfer Digest
M I N I S T R Y O F T R A N S P O R T A T I O N
Geophysical Test Methods, continued
3
For more information, or the complete report, please contact:
Minkyung Kwak, Foundations Engineer, at (416) 235-5240, or at
minkyung.kwak@ontario.ca.
In Partnership
For the geophysical experiments, the ministry partnered with University of Waterloo for geophysical investigations and evaluation; Thurber
Engineering Ltd., for logistics and field support during test measurements; and Zahid Khan for test results evaluation.

Contenu connexe

En vedette

Childlaboureconomicconditions 150227150703-conversion-gate02
Childlaboureconomicconditions 150227150703-conversion-gate02Childlaboureconomicconditions 150227150703-conversion-gate02
Childlaboureconomicconditions 150227150703-conversion-gate02Dr Khaled Mahboub Emara
 
Kuesioner Pemasaran dalam kesuksesan Usaha
Kuesioner Pemasaran dalam kesuksesan UsahaKuesioner Pemasaran dalam kesuksesan Usaha
Kuesioner Pemasaran dalam kesuksesan UsahaAkadusyifa .
 
Sistematika Penulisan Skripsi
Sistematika Penulisan SkripsiSistematika Penulisan Skripsi
Sistematika Penulisan SkripsiAkadusyifa .
 
Presentation 202 jennifer kennedy hospice and pallative care for a patient...
Presentation 202  jennifer kennedy  hospice and pallative care for  a patient...Presentation 202  jennifer kennedy  hospice and pallative care for  a patient...
Presentation 202 jennifer kennedy hospice and pallative care for a patient...The ALS Association
 
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASI
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASIINTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASI
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASIAkadusyifa .
 
Design Thinking
Design ThinkingDesign Thinking
Design ThinkingMohd Helmi
 
Media, violence and influence on youth
Media, violence and influence on youthMedia, violence and influence on youth
Media, violence and influence on youthlilipusion
 
Master-Thesis-CSR Timber Ind. BrazilxGhanaCor
Master-Thesis-CSR Timber Ind. BrazilxGhanaCorMaster-Thesis-CSR Timber Ind. BrazilxGhanaCor
Master-Thesis-CSR Timber Ind. BrazilxGhanaCorEUSTAQUIO CALDEIRA BRANT
 
Theories of life stages and human development
Theories of life stages and human developmentTheories of life stages and human development
Theories of life stages and human developmentlilipusion
 
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...Orbid
 
Storage front garage sales infographic
Storage front garage sales infographicStorage front garage sales infographic
Storage front garage sales infographicStorage Front
 
Introduction to BladeTec High Volume Low Speed HVLS Fan Indonesia
Introduction to BladeTec High Volume Low Speed HVLS Fan IndonesiaIntroduction to BladeTec High Volume Low Speed HVLS Fan Indonesia
Introduction to BladeTec High Volume Low Speed HVLS Fan IndonesiaTawada Cleantech
 

En vedette (14)

Childlaboureconomicconditions 150227150703-conversion-gate02
Childlaboureconomicconditions 150227150703-conversion-gate02Childlaboureconomicconditions 150227150703-conversion-gate02
Childlaboureconomicconditions 150227150703-conversion-gate02
 
Kuesioner Pemasaran dalam kesuksesan Usaha
Kuesioner Pemasaran dalam kesuksesan UsahaKuesioner Pemasaran dalam kesuksesan Usaha
Kuesioner Pemasaran dalam kesuksesan Usaha
 
Sistematika Penulisan Skripsi
Sistematika Penulisan SkripsiSistematika Penulisan Skripsi
Sistematika Penulisan Skripsi
 
Presentation 202 jennifer kennedy hospice and pallative care for a patient...
Presentation 202  jennifer kennedy  hospice and pallative care for  a patient...Presentation 202  jennifer kennedy  hospice and pallative care for  a patient...
Presentation 202 jennifer kennedy hospice and pallative care for a patient...
 
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASI
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASIINTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASI
INTERNET DAN INFRASTRUKTUR BARU TEKNOLOGI INFORMASI
 
Design Thinking
Design ThinkingDesign Thinking
Design Thinking
 
Media, violence and influence on youth
Media, violence and influence on youthMedia, violence and influence on youth
Media, violence and influence on youth
 
Resume Ajaya Kumar Das
Resume Ajaya Kumar DasResume Ajaya Kumar Das
Resume Ajaya Kumar Das
 
Master-Thesis-CSR Timber Ind. BrazilxGhanaCor
Master-Thesis-CSR Timber Ind. BrazilxGhanaCorMaster-Thesis-CSR Timber Ind. BrazilxGhanaCor
Master-Thesis-CSR Timber Ind. BrazilxGhanaCor
 
Theories of life stages and human development
Theories of life stages and human developmentTheories of life stages and human development
Theories of life stages and human development
 
Untitled Presentation
Untitled PresentationUntitled Presentation
Untitled Presentation
 
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...
WatchGuard - Cryptolocker en het gevecht tegen IT 's grootste vijand - Orbid ...
 
Storage front garage sales infographic
Storage front garage sales infographicStorage front garage sales infographic
Storage front garage sales infographic
 
Introduction to BladeTec High Volume Low Speed HVLS Fan Indonesia
Introduction to BladeTec High Volume Low Speed HVLS Fan IndonesiaIntroduction to BladeTec High Volume Low Speed HVLS Fan Indonesia
Introduction to BladeTec High Volume Low Speed HVLS Fan Indonesia
 

Dernier

Ethical stalking by Mark Williams. UpliftLive 2024
Ethical stalking by Mark Williams. UpliftLive 2024Ethical stalking by Mark Williams. UpliftLive 2024
Ethical stalking by Mark Williams. UpliftLive 2024Winbusinessin
 
NASA CoCEI Scaling Strategy - November 2023
NASA CoCEI Scaling Strategy - November 2023NASA CoCEI Scaling Strategy - November 2023
NASA CoCEI Scaling Strategy - November 2023Steve Rader
 
Building Your Personal Brand on LinkedIn - Expert Planet- 2024
 Building Your Personal Brand on LinkedIn - Expert Planet-  2024 Building Your Personal Brand on LinkedIn - Expert Planet-  2024
Building Your Personal Brand on LinkedIn - Expert Planet- 2024Stephan Koning
 
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John Meulemans
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John MeulemansBCE24 | Virtual Brand Ambassadors: Making Brands Personal - John Meulemans
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John MeulemansBBPMedia1
 
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...AustraliaChapterIIBA
 
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...TalentView
 
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptx
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptxHELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptx
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptxHelene Heckrotte
 
A flour, rice and Suji company in Jhang.
A flour, rice and Suji company in Jhang.A flour, rice and Suji company in Jhang.
A flour, rice and Suji company in Jhang.mcshagufta46
 
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdf
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdfAMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdf
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdfJohnCarloValencia4
 
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...IMARC Group
 
Michael Vidyakin: Introduction to PMO (UA)
Michael Vidyakin: Introduction to PMO (UA)Michael Vidyakin: Introduction to PMO (UA)
Michael Vidyakin: Introduction to PMO (UA)Lviv Startup Club
 
Live-Streaming in the Music Industry Webinar
Live-Streaming in the Music Industry WebinarLive-Streaming in the Music Industry Webinar
Live-Streaming in the Music Industry WebinarNathanielSchmuck
 
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdf
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdfGraham and Doddsville - Issue 1 - Winter 2006 (1).pdf
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdfAnhNguyen97152
 
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)tazeenaila12
 
PDT 89 - $1.4M - Seed - Plantee Innovations.pdf
PDT 89 - $1.4M - Seed - Plantee Innovations.pdfPDT 89 - $1.4M - Seed - Plantee Innovations.pdf
PDT 89 - $1.4M - Seed - Plantee Innovations.pdfHajeJanKamps
 
Tata Kelola Bisnis perushaan yang bergerak
Tata Kelola Bisnis perushaan yang bergerakTata Kelola Bisnis perushaan yang bergerak
Tata Kelola Bisnis perushaan yang bergerakEditores1
 
Cracking the ‘Business Process Outsourcing’ Code Main.pptx
Cracking the ‘Business Process Outsourcing’ Code Main.pptxCracking the ‘Business Process Outsourcing’ Code Main.pptx
Cracking the ‘Business Process Outsourcing’ Code Main.pptxWorkforce Group
 
PDT 88 - 4 million seed - Seed - Protecto.pdf
PDT 88 - 4 million seed - Seed - Protecto.pdfPDT 88 - 4 million seed - Seed - Protecto.pdf
PDT 88 - 4 million seed - Seed - Protecto.pdfHajeJanKamps
 
Upgrade Your Banking Experience with Advanced Core Banking Applications
Upgrade Your Banking Experience with Advanced Core Banking ApplicationsUpgrade Your Banking Experience with Advanced Core Banking Applications
Upgrade Your Banking Experience with Advanced Core Banking ApplicationsIntellect Design Arena Ltd
 

Dernier (20)

Ethical stalking by Mark Williams. UpliftLive 2024
Ethical stalking by Mark Williams. UpliftLive 2024Ethical stalking by Mark Williams. UpliftLive 2024
Ethical stalking by Mark Williams. UpliftLive 2024
 
NASA CoCEI Scaling Strategy - November 2023
NASA CoCEI Scaling Strategy - November 2023NASA CoCEI Scaling Strategy - November 2023
NASA CoCEI Scaling Strategy - November 2023
 
Building Your Personal Brand on LinkedIn - Expert Planet- 2024
 Building Your Personal Brand on LinkedIn - Expert Planet-  2024 Building Your Personal Brand on LinkedIn - Expert Planet-  2024
Building Your Personal Brand on LinkedIn - Expert Planet- 2024
 
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John Meulemans
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John MeulemansBCE24 | Virtual Brand Ambassadors: Making Brands Personal - John Meulemans
BCE24 | Virtual Brand Ambassadors: Making Brands Personal - John Meulemans
 
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...
IIBA® Melbourne - Navigating Business Analysis - Excellence for Career Growth...
 
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...
TalentView Webinar: Empowering the Modern Workforce_ Redefininig Success from...
 
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptx
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptxHELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptx
HELENE HECKROTTE'S PROFESSIONAL PORTFOLIO.pptx
 
A flour, rice and Suji company in Jhang.
A flour, rice and Suji company in Jhang.A flour, rice and Suji company in Jhang.
A flour, rice and Suji company in Jhang.
 
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdf
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdfAMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdf
AMAZON SELLER VIRTUAL ASSISTANT PRODUCT RESEARCH .pdf
 
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...
Boat Trailers Market PPT: Growth, Outlook, Demand, Keyplayer Analysis and Opp...
 
Michael Vidyakin: Introduction to PMO (UA)
Michael Vidyakin: Introduction to PMO (UA)Michael Vidyakin: Introduction to PMO (UA)
Michael Vidyakin: Introduction to PMO (UA)
 
Investment Opportunity for Thailand's Automotive & EV Industries
Investment Opportunity for Thailand's Automotive & EV IndustriesInvestment Opportunity for Thailand's Automotive & EV Industries
Investment Opportunity for Thailand's Automotive & EV Industries
 
Live-Streaming in the Music Industry Webinar
Live-Streaming in the Music Industry WebinarLive-Streaming in the Music Industry Webinar
Live-Streaming in the Music Industry Webinar
 
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdf
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdfGraham and Doddsville - Issue 1 - Winter 2006 (1).pdf
Graham and Doddsville - Issue 1 - Winter 2006 (1).pdf
 
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)
Harvard Business Review.pptx | Navigating Labor Unrest (March-April 2024)
 
PDT 89 - $1.4M - Seed - Plantee Innovations.pdf
PDT 89 - $1.4M - Seed - Plantee Innovations.pdfPDT 89 - $1.4M - Seed - Plantee Innovations.pdf
PDT 89 - $1.4M - Seed - Plantee Innovations.pdf
 
Tata Kelola Bisnis perushaan yang bergerak
Tata Kelola Bisnis perushaan yang bergerakTata Kelola Bisnis perushaan yang bergerak
Tata Kelola Bisnis perushaan yang bergerak
 
Cracking the ‘Business Process Outsourcing’ Code Main.pptx
Cracking the ‘Business Process Outsourcing’ Code Main.pptxCracking the ‘Business Process Outsourcing’ Code Main.pptx
Cracking the ‘Business Process Outsourcing’ Code Main.pptx
 
PDT 88 - 4 million seed - Seed - Protecto.pdf
PDT 88 - 4 million seed - Seed - Protecto.pdfPDT 88 - 4 million seed - Seed - Protecto.pdf
PDT 88 - 4 million seed - Seed - Protecto.pdf
 
Upgrade Your Banking Experience with Advanced Core Banking Applications
Upgrade Your Banking Experience with Advanced Core Banking ApplicationsUpgrade Your Banking Experience with Advanced Core Banking Applications
Upgrade Your Banking Experience with Advanced Core Banking Applications
 

Ministry of Transportation, Ontario is Revolutionizing Contract Administration with Aurigo Software

  • 1. 1 T he Ministry of Transportation of Ontario (MTO) is revolutionizing contract management. With a transportation infrastructure network valued at over $2 billion annually, MTO requires efficient information technology to effectively administer construction and operations work. Managing the construction, maintenance and engineering service provider contracts in the Provincial Highways Management Division currently consists of a variety of labour-intensive paper-based methods of recording contract activities in diaries, spreadsheets and databases throughout the time span of each contract. A Request for Proposals for the provision of Web-Based Contract Management Services (WBCMS) was issued in 2013. This innovative approach will result in a much more streamlined and efficient way of collecting, reporting, and validating data and creating many new efficiencies through transformation and automation of various related business processes. What is it? WBCMS is a sustainable solution that will provide an electronic means to capture field data, transmit and store data and provide reliable, complete information to decision makers. The centrally located service will provide full contract lifecycle management functionalities through the entry and tracking of contract information, correspondence and documents. Service providers will be able to maintain digital diaries, electronically record daily activities, and refer to digital checklists, alerts, notifications and dashboards. What’s happened? MTO has entered into an agreement with Aurigo Software Technologies Corp. to deliver a suite of Web-Based Management Services. The solution will offer a complete set of software, all hardware, facilities and services necessary to host and maintain the application. Following launch in 2015, MTO, external service providers and the road-building industry will access the new system and its services through an internet browser where they can perform and electronically record activities associated with all contract administration functions. “The Ministry of Transportation, Contract Management Office, is excited to launch this program to achieve significant efficiencies in all contract management functions,” said Project Manager Sue Lefebvre. Who will be using the service? Internal MTO users as well as external service providers will utilize the centralized service through a subscription fee model. MTO and its users will significantly benefit from this transformation, as the solution will ease the archiving and accessibility of vital contract documentation. This revolutionary change also supports environmental sustainability. WBCMS Training A certified training program will be provided for MTO and industry staff. The training will ensure a smooth and quick transition to the fully- automated solution. Benefits: • Streamline business processes • Reduce risk of inaccuracy as a result of multiple data entries • Improve consistency in oversight and reporting activities • Improve overall accountability by easily tracking audit data • Support environmental sustainability by reducing the number of paper-based documents • Revolutionizing Contract Administration Web-Based Contract Management Services (WBCMS) WBCMS will revolutionize the contract administration functions of contract delivery. Ontario’s Transportation Technology Transfer Digest M I N I S T R Y O F T R A N S P O R T A T I O N A r t i c l e 1 • S p r i n g 2 0 1 4 • w w w . m t o . g o v . o n . c a / e n g l i s h / t r a n s t e k / r o a d t a l k For more information on WBCMS, contact the MTO Project Manager, Sue Lefebvre at Sue.G.Lefebvre@ontario.ca or (905) 704-2617
  • 2. 1 B efore the Ministry of Transportation (MTO) begins to design or construct structures or embankments near environmentally sensitive wetlands, subsurface conditions are assessed by collecting boreholes at each subject site. Knowledge of subsurface soil conditions and their engineering properties are required for the foundation design to ensure a stable structure. In 2012, the ministry partnered with various stakeholders to experiment with geophysical methods as alternatives to boreholes for soil profiling. It is expected that coupling borehole sampling with geophysical techniques will greatly improve the knowledge of subsurface soils especially within difficult to explore swamp areas. The ministry uses borehole samples to obtain soil profile information, but borehole investigation has limitations. In order to provide adequate subsurface descriptions, the number of boreholes and their spacing need to be sufficient. Complex areas suspected of having irregular variations of soft clay over a firm bottom typically require additional boreholes. Collecting a large number of borehole samples to establish a subsurface model can sometimes be limited by factors such as drilling equipment access, environmental regulations, and obtaining permission to enter private property. To mitigate these constraints, the ministry partnered with University of Waterloo and Thurber Engineering Ltd. to test new geophysical techniques and assess their potential to provide sufficient information on subsurface sediment and rock layers. Geophysical techniques are non-invasive explorations that can be carried out from surface or from within the boreholes to image subsurface layers. They use energy and waves to remotely explore ground conditions. Since physical properties such as magnetism, density, electrical conductivity and elasticity vary depending on the type of soil, geophysical methods interpret stratigraphy, the relative position of strata and their relationship to geological chronology, by measuring and analyzing the change in physical properties of materials with depth. Geophysical methods have the potential to provide more sample points at less cost than conventional boreholes. A geophysical test setup for data acquisition can be performed within a relatively short duration as compared to a borehole investigation. Geophysical techniques are environmentally friendly and permit investigation in all seasons. Besides providing stratigraphical imaging, dynamic properties of subsurface soils can also be determined from geophysical tests. The dynamic properties of soils are required for the analysis of any dynamic loading in geotechnical seismic design. The accuracy and resolution of these techniques have improved significantly in recent years due to advances in equipment and data processing. Using geophysical test methods for shallow geotechnical investigations is increasingly valuable for detecting changes in sediment type and has been successfully used to delineate bedrock profiles even in complex geological environments. In an effort to evaluate the effectiveness of these geophysical techniques, MTO selected an environmentally sensitive wetland area in Bowmanville, Ontario, along the Highway 407 east extension corridor as a study site. The project involved field measurements along two 188 m lines.> Deep in the Mire Geophysical Test Methods Used for Characterizing Wetland Soil Figure 1: Survey line and borehole locations during geophysical method testing. Ontario’s Transportation Technology Transfer Digest M I N I S T R Y O F T R A N S P O R T A T I O N A r t i c l e 2 • S p r i n g 2 0 1 4 • w w w . m t o . g o v . o n . c a / e n g l i s h / t r a n s t e k / r o a d t a l k
  • 3. Ontario’s Transportation Technology Transfer Digest M I N I S T R Y O F T R A N S P O R T A T I O N Geophysical Test Methods, continued 2 Line 1 ran south to north, passing west of a pond and ending near a road. Line 2 ran southwest to northeast along the southeast side of the pond (Fig. 1). This site was selected based on the findings from a borehole sample taken prior to testing, which suggested the presence of soft compressible soils covered by hard glacial till. Further, the site is located close to an environmentally sensitive wetland area. Testing Methods and Procedure Three methods known as electrical resistivity imaging (ERI), seismic refraction (SR), and multiple–channel analysis of surface waves (MASW) were performed to evaluate the effectiveness of geophysical methods for the geotechnical site characterization in environmental sensitive wetland areas. Method 1: Electrical Resistivity Imaging (ERI) The electrical resistivity-imaging test is accomplished by generating a current through the ground and measuring the resulting potential differences at the surface. The test requires many measurements, each of them involving four electrodes. Two electrodes introduce current flow into the ground and the two different electrodes measure the electrical changes in the ground due to the imposed current flow. The resistivity of a material is obtained by measuring potential differences. Increasing electrode spacing improves the current penetration depth. Data collected from the test are interpreted using inversion software, and a two- dimensional electrical resistivity structure of the ground below the survey line is generated. To evaluate the ERI method, a 48-electrode switch system was used to obtain the resistivity measurements at the subject site. Electrodes were driven into the ground along a straight line at a selected spacing for each line (Line 1 and Line 2) with the resistivity meter positioned at the centre of the line. In addition to the two main lines, a higher resolution survey was performed on Line 2. This shorter length survey gave a shallower and more detailed indication of the resistivity structure of the upper stratigraphy over the middle part of Line 2. Method 2: Seismic Refraction (SR) The SR method measures the velocity of seismic waves (compression and shear waves) as they travel through different media at different velocities. The seismic refraction survey generates seismic waves and records their arrival times at numerous points on the ground surface. The SR requires an arrangement of equally spaced velocity transducers or geophones that measure vertical or horizontal motion and a seismic source such as a sledgehammer, weight drop or explosive charge. The SR surveys analyze the first arrival event at each geophone and the resulting data are presented as travel times versus distances. The SR survey was conducted using a 48-channel seismograph and 48 horizontal geophones. Geophone sensitivities were verified by mounting them individually on a shaker and comparing the output response of each to an accelerometer attached to the geophone casing. Top soil was removed at the locations of the geophones and the seismic source to enhance the coupling of the transducers with the ground. Good coupling is required to increase the signal-to-noise ratio. The SR survey was completed along five 47-metre lines: two along Line 1 and three along Line 2. The shorter line span was dictated by the geophone spacing necessary for the required depth resolution. The method required a 20 m clearance at each end of the transducer array for placement of the seismic source. A stream to the northwest of the pond interrupted Line 1. This resulted in only two seismic survey lines being completed along Line 1. Thick forest along the south border of the site required Line 2-3 alignment to deviate from Line 2 (Figure 1). The seismic source was a 5 kg sledgehammer that generated S-waves by hitting a c-shaped steel plate in the direction perpendicular to the geophone line. The edges of the c-plate were partially inserted into the ground to enhance the coupling between the plate and the ground. Seismic traces were collected at various source locations for each line. Source offsets were selected so sufficient refractions from the shallow and deep layers were obtained. For each source location, positive and negative polarity shear waves were generated by hitting the steel plate in opposite directions. Five blows on either side of the plate were recorded and stacked to improve the signal- to-noise ratio. Method 3: Multiple-Channel Analysis of Surface Waves (MASW) The MASW method uses dispersive nature of surface waves to evaluate soil profiles in multi-layered soils. When a seismic pulse is created on the ground surface most of the seismic energy travels in the form of surface waves. Surface wave velocity depends on the properties of the soil layers and the frequency of the pulse. The depth of pulse penetration into the soil is a function of wavelength (wave velocity = frequency x wavelength), with longer wavelengths penetrating deeper. The penetration depth of a surface wave is commonly taken as one wavelength with most of its energy concentrated between the surface and a depth of one-third wavelength. High frequencies, or short wavelengths, propagate at the velocity of the upper layer whereas low frequencies, or large wavelengths, propagate at a velocity determined by the characteristics of subsequently deeper soil layers. The MASW survey used the same test layout as described above for the SR method. It was completed with similar >
  • 4. equipment including 48-channel seismograph and low frequency geophones. Geophone spacing was 1 m for a total spread length of 47 m and again the top soil was removed from the selected source locations and geophone locations to enhance the coupling with the ground. Different seismic sources were tested in a preliminary on-site investigation to select the best source for generating lower frequencies. The most effective seismic source was an 80-kg weight raised and dropped onto a steel plate using a tripod-pulley system. Three source offsets were chosen on either side of the survey lines. Shorter offset distances were used to study the propagation of higher frequencies in shallower layers, whereas the larger offsets were used to study the propagation of lower frequencies in deeper layers. Test Results and Discussion Prior to the geophysical surveys, one borehole sample was obtained. Five more borehole samples were collected following the geophysical investigation. A cone Penetration test (CPT) was completed at four of the borehole locations. The subsurface information obtained from the borehole investigation revealed that the site is underlain by a soft silt and clay layer, a more competent sand and silt layer, and a soft silt clay overlying the very dense till deposit. The MASW method identified the inversion of soft and stiff soils and gave the best indication of the layering in the area. The maximum average error in the evaluation of the depth of the hard layer was 30% when compared to the borehole information. The MASW method predicted depth to till less accurately than ERI. Using a source that generates higher energy in the lower frequency spectrum may help increase the depth resolution for this method. Results from each geophysical test were analyzed and compared to the data from the boreholes. Among the three tested methods, the ERI survey results show the most accurate prediction of the depth of till layer with less than 19% error. However, the ERI resolution was not sufficient to accurately predict the upper strata. Electrical conductivity is affected by porosity, degree of saturation, concentration of dissolved electrolytes in the pore water, temperature of the water in the pore spaces, and amounts of clay minerals and colloidal material, making it difficult to determine the physical characteristics of soils or rocks from resistivity surveys alone. The depth of the till layer could not be obtained accurately using SR survey due to the presence of a relatively stiff sand and silt over a soft silty clay layer. One significant limitation of the seismic refraction survey is the inability to determine inverse layering, or wave velocity decreasing with depth. The SR method overestimated the till depth. Information from the three geophysical test methods assisted in evaluating the depth of the hard layer, with errors between 10 and 23 per cent. On average, the till layer depth is underestimated compared with the values from borehole information. The transition zone between the silty clay layer and the hard till layer is stiff enough to generate a significant increase in shear wave velocities, resulting in the geophysical methods detecting the till layer before the borehole data does. Future use of Geophysical Testing for MTO Projects Test results showed the three geophysical methods have potential to provide accurate and cost-effective subsurface modeling of soils and the depth to a competent layer. They are capable of successfully indicating depth to a competent layer when compared to borehole samples at the study site. These test methods have the potential to bridge information gaps between boreholes when borehole drilling is constrained by various factors. • Ontario’s Transportation Technology Transfer Digest M I N I S T R Y O F T R A N S P O R T A T I O N Geophysical Test Methods, continued 3 For more information, or the complete report, please contact: Minkyung Kwak, Foundations Engineer, at (416) 235-5240, or at minkyung.kwak@ontario.ca. In Partnership For the geophysical experiments, the ministry partnered with University of Waterloo for geophysical investigations and evaluation; Thurber Engineering Ltd., for logistics and field support during test measurements; and Zahid Khan for test results evaluation.