Structure201002.pdf
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Pobierz
NCSEA Winter Institute
Coronado, California
March 12 & 13
February 2010
Steel
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C O N T E N T S
F
EATURES
20 Cold-Formed Steel Façade Framing
By Anthony D. Coviello, P.E., S.E.
It is important that structural engineers have a good understanding of the limitations
of Cold-formed Steel (CFS), as well as its possibilities. This article outlines some
common CFS façade framing issues and how the Engineer of Record can resolve
them with early consideration.
22 A Gem in the Mountains
By Carol A. Stevens, P.E., SECB and Phillip A. Warnock, AIA, NCARB
The Upshur County Courthouse, built in 1899, is constructed of brick with a
rock face sandstone foundation and monumental sandstone columns supporting
the portico. The dome is supported by a brick tower that draws one’s eye to the
top of the structure, where decorative Corinthian cast iron columns adorn the
façade. Time and weather had taken a toll on this gem, which has suffered the
consequences of good intentions.
6
20
C
OLUMNS
D
EPARTMENTS
24 InSights
Soil/Cement Slurry Strengthens
Weak Soils
By Jonathan Bussiere, E.I.T.
27 Quality Assurance Corner
Validating the Results of Structural
Engineering Software
By Clifford Schwinger, P.E., SECB
and Eric J. Heller, E.I.T.
33 Spotlight
Upholding Tradition
By Brent Bonham, P.E., S.E. and
Jeffry S. Adams, P.E.
5 Editorial
Understanding National Standards
Provisions for Seismic Design
By James Malley, S.E.
6 Structural Design
Structural Design of Steel Pipe
Support Structures
By Kasi V. Bendapudi, P.E., S.E.
10 Construction Issues
Planning to Minimize Damage to
Buildings Adjacent to Construction
Sites in Urban Environments
By Milan Vatovec, Ph.D., P.E., Paul
Kelley, P.E., Michael Brainerd, P.E.,
and Charles Russo, P.E.
14 Structural Performance
A Solution to Seismic
Bracing Restrictions
By John W. Lawson, S.E.
16 Structural Sustainability
Can Using More Wood Reduce Your
Environmental Footprint?
By Roxane Ward
41 Structural Forum
The Failure of the Five E’s
By Barry Arnold, P.E., S.E., SECB
22
I
N
E
VERY
I
SSUE
4 Advertiser Index
30 Resource Guide – Bridge
34 NCSEA News
36 SEI Structural Columns
38 CASE in Point
O
N THE
C
OVER
The Richmond Oval is a
multipurpose sports and
recreation facility that
will serve as the Long
Track Speed Skating
venue for the 2010
Winter Olympics. This 6-acre roof structure features
composite wood-steel arches and is featured in this
month’s Structural Sustainability article found on
page 16. Courtesy of
FII.
February 2010
Steel
NCSEA Winter Institute
Coronado, California
March 12 & 13
Publication of any article, image, or advertisement in STRUCTURE
®
magazine does not constitute endorsement
by NCSEA, CASE, SEI, C
3
Ink, or the Editorial Board. Authors, contributors, and advertisers retain sole
responsibility for the content of their submissions.
STRUCTURE magazine
3
February 2010
SUPPORTING ORGANIZATIONS
National Council of Structural
Engineers Associations
Jeanne M. Vogelzang, JD, CAE
Executive Director
312-649-4600
execdir@ncsea.com
Council of American Structural Engineers
David Bixby
Director, Coalitions
202-347-7474
case@STRUCTUREmag.org
Structural Engineering Institute
John E. Durrant, P.E.
Manager
ASCE Engineering Programs
703-295-6360
sei@STRUCTUREmag.org
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execdir@ncsea.com
Editor Christine M. Sloat, P.E.
publisher@STRUCTUREmag.org
Associate Editor Nikki Alger
publisher@STRUCTUREmag.org
Graphic Designer Rob Fullmer
graphics@STRUCTUREmag.org
Web Developer
Advertiser Index
free information from advertisers
ADVERTISER
PAGE #
American Galvanizers Association
Page 30
Computers & Structures, Inc.
Page 44
CTS Cement Manufacturing Corp.
Page 13
Design Data
Page 40
William Radig
webmaster@STRUCTUREmag.org
ESAB Welding and Cutting Products
Page 19
Fyfe Co. LLC
Page 7
Geopier Foundation Company, Inc.
Page 29
STRUCTURE
®
(Volume 17, Number 2). ISSN 1536-4283.
Publications Agreement No. 40675118. Owned by the
National Council of Structural Engineers Associations and
published in cooperation with CASE and SEI monthly by C
3
Ink. The publication is distributed free of charge to members
of NCSEA, CASE and SEI; the non-member subscription rate is
$65/yr domestic; $35/yr student; $125/yr foreign (including
Canada). For change of address or duplicate copies, contact
your member organization(s). Any opinions expressed in
STRUCTURE magazine are those of the author(s) and do not
necessarily refl ect the views of NCSEA, CASE, SEI, C
3
Ink, or the
STRUCTURE Editorial Board.
STRUCTURE
®
is a registered trademark of
National Council of Structural Engineers Associations (NCSEA)
.
Integrated Engineering Software, Inc.
Page 42
KPFF Consulting Engineers
Page 4
MidaSoft, Inc.
Page 31
National Council of Examiners for Engineering and Surveying (NCEES)
Page 17
Powers Fasteners, Inc.
Page 2
QuakeWrap, Inc.
Page 28
RISA Technologies
Page 43
SidePlate Systems, Inc.
Page 25
Simpson Strong-Tie
Page 9
Published By:
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Steel Deck Institute
Page 11
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StrucSoft Solutions, Ltd.
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Page 27
Valmont Tubing
Page 15
Visit STRUCTURE magazine on-line at
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www.STRUCTUREmag.org
Wheeling Corrugating
Page 26
STRUCTURE magazine
February 2010
4
Editorial
Understanding National Standards
Provisions for Seismic Design
By James Malley, S.E.
Vice President, NCSEA
As a member of the committee that writes and updates the AISC
seismic design standard for structural steel in AISC document 341,
I am able to participate in the discussions and dialogues that are
held whenever a new provision is proposed, or an existing provision
is modifi ed. This is a unique opportunity to understand both of
the fundamental philosophies for, and the detailed reasons behind,
the AISC 341 provisions. I know that every meeting held by our
committee will be a great learning experience for me, as I try to take
in all of the expertise that is shared by my fellow committee members.
Unfortunately, most practicing engineers do not have this opportunity
and therefore have to rely on other means to complete their project
designs, such as their own interpretation of the provisions, review of
the accompanying commentary, and discussion with colleagues. The
seemingly never-ending series of changes and additional complexity,
built into every edition, makes proper application of our seismic design
standards one of the signifi cant challenges of our profession.
If you have ever felt that this challenge was frustrating, and maybe
even a bit overwhelming, then attending the 2010 NCSEA Winter
Institute on March 12
th
and 13
th
in San Diego may be just the ticket for
you. Titled
Seismic Design: Explaining the ’Y’ Factor from One Generation
to the Next
, this seminar will focus on presenting the fundamental basis
for, and reasons behind, our national standards provisions for seismic
design. This Winter Institute will include seven lectures given by leading
seismic researchers and practicing engineers on such topics as the basic
seismic design provisions, requirements for the four primary structural
materials, nonstructural component design, soil-foundation-structure
interaction (SFSI), and the next generation of performance-based
design criteria. The presenters will describe recent changes and will
focus on areas of the code that have been the more frustrating or less
understood. Their emphasis will be on how to systematically implement
good fundamental seismic design concepts, to result in buildings and
structures that will meet our seismic design objectives.
buildings. We are currently planning a tour that includes observing
multiple tests in action, as well as a shaking table test.
If this isn’t enticing enough, I haven’t even mentioned the venue, the
Marriott Coronado Island Resort and Spa, on world famous Coronado
Island across the bay from San Diego. The resort boasts a full spa,
tennis courts and three pools on site, and easy access to the beach and
downtown San Diego. Combining the hotel with the expected warm,
but not hot, weather year round in San Diego should make for an
enjoyable stay during the event.
Check out pages 34 and 35 of this issue and the NCSEA website
(
www.NCSEA.com
) for more details on the Winter Institute schedule,
to register, and to reserve your room at the Marriott Coronado Island
Resort. Then plan to join us in San Diego this March 12
th
and 13
th
. I
am sure that you will learn a lot, catch up with colleagues, meet new
engineers, and maybe even work on your tan before heading home!ɸ
NCSEA Winter Institute Presenters:
• Professor Chia-Ming Uang, UCSD
ASCE 7 and Steel Design Concepts
• Professor Benson Shing, UCSD
Masonry Design Methods and Issues
• Professor Jose Restrepo, UCSD
Concrete Performance Factors and Design
• Mr. Phil Line, URS Corporation
Wood Design Provisions, Past and Present
• Professor Tara Hutchinson, UCSD
Nonstructural Components and Systems
• Dr. Farzad Naeim, John A. Martin & Associates
Modeling SFSI, Easy, Diffi cult, or Impossible?
• Mr. Ronald Hamburger, SGH
Next-Generation Performance-Based Design
In addition to the lectures, there will be a Friday afternoon tour of
the world-renowned structural testing laboratory and shake table at the
University of California at San Diego. These facilities include a strong
wall for full scale component tests, a lab specifi cally designed for testing
base isolators, and the outdoor shaking table that can test full scale
Editorial Board
Chair
Jon A. Schmidt, P.E., SECB
Burns & McDonnell
Kansas City, MO
chair@structuremag.org
Executive Editor
Jeanne M. Vogelzang, JD, CAE
NCSEA
Chicago, IL
execdir@ncsea.com
Craig E. Barnes, P.E., SECB
CBI Consulting, Inc.
Boston, MA
Richard Hess, S.E., SECB
Hess Engineering Inc.
Los Alamitos, CA
Mark W. Holmberg, P.E
.
Heath & Lineback Engineers, Inc.
Marietta, GA
Brian J. Leshko, P.E.
HDR Engineering, Inc.
Pittsburgh, PA
John A. Mercer, P.E.
Mercer Engineering, PC
Minot, ND
Brian W. Miller
AISC
Davis, CA
Mike C. Mota, P.E
.
CRSI
Williamstown, NJ
Evans Mountzouris, P.E.
The DiSalvo Ericson Group
Ridgefi eld, CT
Matthew Salveson, Ph.D., P.E.
Dokken Engineering
Folsom, CA
Greg Schindler, P.E., S.E.
KPFF Consulting Engineers
Seattle, WA
Stephen P. Schneider, Ph.D., P.E., S.E.
Kramer Gehlen & Associates, Inc.
Vancouver, WA
John “Buddy” Showalter, P.E.
AF & PA/American Wood Council
Washington, DC
STRUCTURE magazine
5
February 2010
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Inne pliki z tego folderu:
Structure201001.pdf
(9617 KB)
Structure201002.pdf
(6942 KB)
Structure201003.pdf
(4559 KB)
Structure201004.pdf
(5695 KB)
Structure201005.pdf
(9050 KB)
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