Innovative Construction Methods

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Innovative Construction Methods

• Piyali Chaudhuri
• UTL Seminar
• November 19th 2009

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Outline

• Problem
• Innovative Contracting Strategies
• Innovative Construction Methods
• Summary

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Problem

• When will this project be delivered
• How much delay will be experienced during
  construction
• Public Mantra Get in get out stay out
• How can we build faster while maintaining quality
  cost effectiveness

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Innovative Construction Techniques

• reduce the time of construction activity vs.
  traditional build(TB) methods
• use of special materials methods

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Innovative Contracting Techniques

• A B Bidding
• Lane Rental
• Incentives/Disincentives (I/D)
• Design Build(D-B D/B)
• Warranties

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Why Pursue Design-Build

• Time Savings
• Singular responsibility
• Reduce administrative costs
• Allow for contractor innovation and flexibility
• Allow contractor to pursue new technologies that
  will facilitate design construction improve
  final product quality

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Premise for the Implementation
www.mdt.mt.gov/other/const/...guidelines/innov_
contr_guide.pdf
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Utah Example Reasons for Pursuing Design/Build

• Time
• The I-15 reconstruction(600 North (downtown)
  10600 South)
• 2002 Winter Olympics
• increasing traffic congestion called for early
  completion
• Took 4.5 years under D/B vs. 10 yrs under TB
• Innovation
• Contractor can provide early insight to design to
  facilitate construction
• Administration and Legal Issues
• Single source responsibility reduces legal issues
  facilitates administration

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States Using Design/Build
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Innovative Construction

• Design/Build - critically important feature of
  Accelerated Bridge Program
• Bridge division of FHWA is focused on Fast
  Track or Accelerated Bridge Construction (ABC)
  
• Building bridges more quickly than conventional
  practice while maintaining quality
• FHWA is actively promoting advantages of ABC

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Why ABC
Age of US Bridges
www.udot.utah.gov
www.cnn.com
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Why ABC
Work Zone Impacts
6400 work zones (2003) o 6157 lane miles
closed o 20 capacity reduction o Safety Issues
www.udot.utah.gov
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Why ABC

• Congestion Impact
• - 4 bn hrs/yr time delay
• - 2.7 bn gall wasted gas/yr
• Cost of Congestion to Families and Civic Life
• - less time to spend with families friends
• - 55 miss one or more family functions per
  week
• Congestion negatively impacts countrys social
  fabric

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Why ABC

• Cost of Congestion to U.S. Businesses
• - 500K/yr for additional travel time
• So ABC will build the bridge first before
  you set cones then quickly move it into place
  like in hours or a weekend!

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Steps in ABC

• ABC Planning
• Innovative contracting strategies
• Procurement of materials before advertising
  project (e.g. prestressed concrete girders
  structural steel girders)
• ABC Design
• Prefabrication of bridge components or entire
  bridge
• ABC - Construction
• Use of innovative equipment (e.g. self-propelled
  modular transporters SPMTs to move entire
  bridge launching pivoting)

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Standardized PrefabricatedBridge Elements and
Systems
Precast Abutments
http//www.fhwa.dot.gov/
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Standardized PrefabricatedBridge Elements and
Systems
Precast Piers
http//www.fhwa.dot.gov/
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Standardized PrefabricatedBridge Elements and
Systems
Precast Piers
http//www.fhwa.dot.gov
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Standardized PrefabricatedBridge Elements and
Systems
Precast deck on precast concrete girders
http//www.fhwa.dot.gov/
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Accelerated Bridge Construction

• Replacement /new construction
• Use innovative design construction methods
  using high performance materials
• Benefits of ABC
• Reduces typical construction time
• Maintains or enhances quality
• Reduces traffic disruption
• Increases work-zone safety
• Reduced on-site environmental impacts
• Infrastructure improvement at a fast pace
• Produces cost-effective long-lasting bridges
  with early openings

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The Utah Experience
Making ABC Standard Practice
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4500 South Structure on I-215 East

• 4500 S. Bridge spanning I-215 East removed
  replaced in one weekend! 
• new bridge constructed next to I-215 4500 South
  NB off-ramp moved into place using an
  innovative technique
• Video

www.udot.utah.gov
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UDOTs Family of Innovative ABC Elements and
Methods
Innovative Accelerated Bridge Construction

• Precast
• Bridge
• Elements

Modular Construction
Structure Placement Methods
Accelerated Geotech Work
Fast Track Contracting
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Summary

• Innovative Construction Method ABC helps
  transportation agencies achieve their Mission
• To efficiently effectively move
• people goods services
• To accelerate project delivery
• Reduce traffic delays