Innovative Construction Methods

1
Innovative Construction Methods

• Piyali Chaudhuri
• UTL Seminar
• November 19th, 2009

2
Outline

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

3
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?

4
Innovative Construction Techniques

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

5
Innovative Contracting Techniques

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

6
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

7
Premise for the Implementation
www.mdt.mt.gov/other/const/...guidelines/innov_
contr_guide.pdf
8
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

9
States Using Design/Build
10
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

11
Why ABC?
Age of US Bridges
www.udot.utah.gov
www.cnn.com
12
Why ABC?
Work Zone Impacts
6,400 work zones (2003) o 6,157 lane miles
closed o 20 capacity reduction o Safety Issues
www.udot.utah.gov
13
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 country's social
  fabric

14
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!

15
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)

16
Standardized PrefabricatedBridge Elements and
Systems
Precast Abutments
http//www.fhwa.dot.gov/
17
Standardized PrefabricatedBridge Elements and
Systems
Precast Piers
http//www.fhwa.dot.gov/
18
Standardized PrefabricatedBridge Elements and
Systems
Precast Piers
http//www.fhwa.dot.gov
19
Standardized PrefabricatedBridge Elements and
Systems
Precast deck on precast concrete girders
http//www.fhwa.dot.gov/
20
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

21
The Utah Experience
Making ABC Standard Practice
22
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
23
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
24
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