CRSI and Reinforcing Steel Industry Update

CRSI and Reinforcing
Steel Update
Bob Risser, P.E.
President & CEO
TTCC / National Concrete Consortium
Fall 2012
Seattle, Washington
1
Agenda
 CRSI – The Organization
 Bar Markings
 CRSI “Mythbusters”
CRSI – The Organization
 The Concrete Reinforcing Steel
Institute (CRSI) was founded in
1924, making it one of America’s
oldest construction industry
trade associations.
CRSI – The Organization
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CRSI membership:
Reinforcing steel producers
Fabricators
Placing contractors
Accessories manufacturers
(splice, couplers, bar supports).
CRSI – The Organization
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Associate members include:
Epoxy coaters
Equipment manufacturers
Concrete contractors
Other companies engaged in
reinforced concrete
construction.
CRSI – The Organization

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Professional members include:
Engineers
Architects
Construction managers
Students
CRSI Membership Represents the
Industry
 90+% of all U.S. domestic rebar,
smooth dowel, and wire
production.
 80+% of fabricated rebar
tonnage.
 Most dowel baskets
manufactured by CRSI
members.
Transportation Efforts
 Bridges
» Danielle Kleinhans, PhD, P.E.,
Structural/Transportation Engineer
» Official Concrete Rep to LTBP
» Chair of NCBC
 Pavements
» Partnership with ACPA
» Cooperative Agreement with FHWA
on CRCP
Certification
 Epoxy Coating Plant
» 20th Year
» Proceeding toward ANSI
Accreditation
 Adhesive Anchor Installer
» Joint ACI-CRSI program
» Launched in 2011
The Strength in Reinforced Concrete
9
CRSI as SDO
 Member of ANSI
 Standards Committee formed
 Next steps
» Policy Document ~
» ANSI Application Submitted Approval
» Ballot Proposed Standards
The Strength in Reinforced Concrete
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Proposed Standards
 Bar Supports
 Conversion of curret Manual of
Standard Practice
 Proceeding for ACI 301
Reference (Specifications of
Structural Concrete)
The Strength in Reinforced Concrete
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MSP Moving Forward
 Standards for the Usage of
Reinforcing Steel in Concrete
Construction
» ANSI Standard
 Guide to Common Reinforcing
Steel Industry Practice
» Guide and commentary
The Strength in Reinforced Concrete
Working
Titles
12
Bar Markings ~ back to in-lbs
The Strength in Reinforced Concrete
13
CRSI Board of Directors :
 CRSI producer members revert
back to the in.-lb marking system
» November 9, 2011 meeting
 Phase-in target date is January 1,
2014
The Strength in Reinforced Concrete
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Why Change Markings?
 FHWA no longer mandates metric
system on Federal-Aid projects
» Memorandum - November 25, 2008
 Key ACI documents never
converted to soft metric
designations
CONFUSION IN INDUSTRY
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15
Bar Markings
 Contained in
CRSI MSP 2009
 Present
reference to
metric marks
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ID Examples
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Inspection in Interim Period
 Confusion with
mill / bar
markings?
 Should not be
a basis for
rejection
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Planned Monthly Web Updates
The Strength in Reinforced Concrete
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The Strength in Reinforced Concrete
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Myth #1
 All steel
reinforcing bar is
made with virgin
iron ore from the
Mesabi Iron
Range whose
cost is stable over
long periods.
The Strength in Reinforced Concrete
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Myth Buster #1
 Steel reinforcing
bar is made of 95
to 98 % scrap
steel
 Scrap is now a
worldwide
commodity
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Electric Arc Furnace (EAF)
Forming Billets
Cooling Steel Billets
Deformation Machine
Cooling Rack
The New Reality: Volatility
>55% of Rebar Cost is Scrap
28
Scrap Prices – 1970 – 2011
AMM #1 HMS Composite - $/GT
$600
$550
$500
$450
$400
$350
$300
$250
$200
$125 $125
$150
$100
$50
$35
$0
1970 1975 1980
Jul-08
$519
Aug-11
$419
Mar-04
$250
$115
$145
$65
1985
1990
1995
2000
Nov-08
$101
2005
2010
Source: American Metal Market
Figure 1
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Scrap Prices – 2003-2011
AMM #1 HMS Composite - $/GT
$600
$550
$500
$450
$400
$350
$300
$250
$200
$150
$100
$50
$0
Jul-08
$519
Aug-11
$419
Mar-04
$250
Nov-08
$101
2003
2004
2005
2006
2007
2008
2009
2010
2011
Source: American Metal Market
Figure 2
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Myth #2
 An ASTM designated product
means it is readily available in
the marketplace.
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Myth Buster #2
 Yes, for:
» A615, Grade 60
» A706, Grade 60
» Epoxy - coated
 Others may be a
mill order with a
minimum weight
(in tons)
The Strength in Reinforced Concrete
32
Myth #3
 Stainless steel reinforcing bar
refers to one product.
OR
 Any stainless steel alloy is
available as reinforcing bar.
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Myth Buster #3
 There are hundreds of grades &
sub grades of Stainless Steel
 Stainless Steel
» Large family of alloys
» Different properties for the application
 Reinforcing bar available in 5 to 6
of the alloys
The Strength in Reinforced Concrete
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Myth #4
 Changing the
reinforcing bar type
in a bridge deck will
guarantee a 75-year
design life for the
DOT.
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35
Myth Buster #4
Reinforcing steel
Placing conditions
Curing
Concrete mix
Aggregate durability
The Strength in Reinforced Concrete
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Myth Buster #4 (cont.)
 Bridge decks are made of many
interrelated components
 It is a system
 All chain links must have
comparable service lives
» Reinforcing steel is but 1 component
The Strength in Reinforced Concrete
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Myth #5
 CRSI doesn’t
participate in
research
The Strength in Reinforced Concrete
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Myth Buster #5
 CRSI R&D
Committee
 CRSI Research and
Education
Foundation
The Strength in Reinforced Concrete
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Completed Projects
Project
University
Use of Ultrahigh-Strength
Purdue University
Reinforcement in Columns of
Frames to Resist Seismic Loads
Evaluation of the Orientation of
Missouri University of
90° and 180° Reinforcing Bar
Science & Technology
Hooks in Wide Members
• Research Notes being prepared
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Lap Splices in Thin Members
School
Purdue University
Principal Investigator
Dr. Santiago Pujol
Matching Funds
Purdue Foundation
Erico
Status - Ongoing
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Spiral Stirrups
School
University of Cincinnati
Principal Investigator
Dr. Bahram Shahrooz
Funding
Pankow Foundation
CRSI and PCI
Status - Pending
The Strength in Reinforced Concrete
dogleg
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Bar Bending
School
NC State University
Principal Investigator
Dr. Rudolf Seracino
Funding
CRSI & NC State
Foundation
Status - Starting
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High-Strength Bar Hooks
School
University of Kansas
Principal Investigator
Drs. David Darwin &
JoAnne Browning
Funding
EPRI, CRSI, KDOT,
Pankow
Status - Ongoing
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High-Strength Rebar
 Classed as yield (fy ) ≥ 80 ksi
 Collaborative research
consortium?
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High-Strength Rebar
 Economic analysis
 Develop generic material
requirements (ASTM spec)
 Structural research
 Code adoption
The Strength in Reinforced Concrete
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High-Strength Rebar
 What questions does the industry
need / want to be answered?
 Is it a viable product?
 Will its availability expand / open
markets for concrete construction?
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Myth #6
 CRSI has no local
presence, just an
office in Chicago
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CRSI Regions
THANK YOU!
www.crsi.org