san francisco-oakland bay bridge east span of earthquake design san francisco-oakland bay bridge...

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- 1 - SEAONC South Bay Meeting Tuesday, April 11th Michael’s at Shoreline 2960 Shoreline Blvd. Mnt. View Registration Deadline: 12:00 p.m. Thursday, Apr 6th (Details on page 5) A Message from the President VOL. LXI, NO. 04 FOUNDED 1930 April 2006 575 MARKET STREET SUITE 2125 SAN FRANCISCO, CA 94105-2870 415/974-5147 WWW.SEAONC.ORG [email protected] April 4th Monthly Meeting Continued on page 2 SEAONC Monthly Meeting Tuesday, April 4th 2006 The City Club 155 Sansome Street, 10 th Floor San Francisco Registration Deadline: 12:00 p.m. Thur. Mar 30th (Details to the right, reg. form on back of news) Meeting Notice April 18, 2006 marks the 100th anni- versary of the great 1906 earthquake that rocked the San Francisco Bay Area. This earthquake of 100 years ago still represents the largest magni- tude event to occur in a major North American city and has often been characterized as the maximum cred- ible earthquake to be anticipated for building design purposes. Its impact continues to resonate to this day. Surprisingly, however, it was the 1925 Santa Barbara earthquake that prompted the U.S. Congress to direct the U.S. Coast and Geodetic Survey to assume responsibility for investi- gation and research into earthquakes. Additionally, it was this event that prompted several cities in California to adopt earthquake design regula- tions including a requirement that structures be designed to resist a lat- eral force equal to 20% of the build- ing weight! The true watershed event in the implementation of earthquake design SAN FRANCISCO-OAKLAND BAY BRIDGE EAST SPAN: By Sajid Abbas, Ph.D., P.E., Project Engineer of the San Francisco-Oakland Bay Bridge East Span Skyway Doug Coe, P.E., Resident Engineer, San Francisco-Oakland Bay Bridge East Span Skyway Program Committee Chair Hamid Fatehi The seismically vulnerable eastern spans of the San Francisco-Oakland Bay Bridge are being replaced with a dual, 3.6-kilometer long paral- lel structure. The Skyway section, which consists of 2.1-kilometer long twin viaducts, is currently under construction by a joint venture of Kiewit, FCI and Manson. The via- ducts are precast segmental bridges erected in balanced cantilever. The Skyway superstructure consists of four frames as defined by the position of expansion joints. The first three frames are about 640-m long with a typical span length of 160-m. The box girder is 9-m deep at the pier and 5.5-m deep at mid-span. The shape of the box-girder matches the form of the suspension bridge orthotropic box, providing integrity of form throughout the length of the bridge. The out-side panels are light- weight concrete. The box is 25-me- ters wide and is designed to carry either 5 lanes of highway traffic with standard shoulders or 4 lanes of traf- fic with a light rail system. Typical segments are 8-m long and vary in weight from 7-MN to 5-MN. A total of six 2.5-m diameter steel pipe-piles, about 100-m in length, support the typical skyway pile-cap. The piles consist of driven steel shells with composite reinforced concrete fill in the upper section. The thick- ness of the steel shell varies from 75-mm to 50-mm. To ensure proper transfer of loads from the concrete core to the steel shell, the concrete was bonded to the steel shell using welded shear studs in the upper section whilst shear rings were used in the lower section. The piles are generally tipped 4-meters into lower Alameda sands. The use of a large Mencke MHU 1700 hammer with a minimum energy of 1000-kJ was specified in the special provisions. The total number of pile shells to be driven is 160. The total length of the 2.5-m diameter pipe to be installed is 15,000-m. Each pile weighs approxi- mately 365,000-kg. Few commuters realize that the skyway portion of the San Francisco Oakland Bay Bridge East Span is over 85% complete. Learn more about the science behind this landmark project, as well as the current status of the construction at the April 4th SEAONC presentation.

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Page 1: SAN FRANCISCO-OAKLAND BAY BRIDGE EAST SPAN of earthquake design SAN FRANCISCO-OAKLAND BAY BRIDGE EAST SPAN: ... the form of the suspension bridge ... (SAP2000, ETABS,

- 1 -

SEAONC South Bay MeetingTuesday, April 11th

Michael’s at Shoreline2960 Shoreline Blvd.

Mnt. View Registration Deadline: 12:00 p.m.

Thursday, Apr 6th(Details on page 5)

A Message from the President

VOL. LXI, NO. 04 FOUNDED 1930 April 2006

575 MARKET STREET SUITE 2125 SAN FRANCISCO, CA 94105-2870 415/974-5147 WWW.SEAONC.ORG [email protected]

April 4th Monthly Meeting

Continued on page 2

SEAONC Monthly MeetingTuesday, April 4th 2006

The City Club155 Sansome Street, 10th Floor

San FranciscoRegistration Deadline: 12:00 p.m.

Thur. Mar 30th(Details to the right, reg. form on back of

news)

Meeting Notice

April 18, 2006 marks the 100th anni-versary of the great 1906 earthquake that rocked the San Francisco Bay Area. This earthquake of 100 years ago still represents the largest magni-tude event to occur in a major North American city and has often been characterized as the maximum cred-ible earthquake to be anticipated for building design purposes. Its impact continues to resonate to this day.

Surprisingly, however, it was the 1925 Santa Barbara earthquake that prompted the U.S. Congress to direct the U.S. Coast and Geodetic Survey to assume responsibility for investi-gation and research into earthquakes. Additionally, it was this event that prompted several cities in California to adopt earthquake design regula-tions including a requirement that structures be designed to resist a lat-eral force equal to 20% of the build-ing weight!

The true watershed event in the implementation of earthquake design

SAN FRANCISCO-OAKLAND BAY BRIDGE EAST SPAN:

By Sajid Abbas, Ph.D., P.E., Project Engineer of the San Francisco-Oakland Bay Bridge East Span SkywayDoug Coe, P.E., Resident Engineer, San Francisco-Oakland Bay Bridge East Span Skyway Program Committee Chair Hamid Fatehi The seismically vulnerable eastern spans of the San Francisco-Oakland Bay Bridge are being replaced with a dual, 3.6-kilometer long paral-lel structure. The Skyway section, which consists of 2.1-kilometer long twin viaducts, is currently under construction by a joint venture of Kiewit, FCI and Manson. The via-ducts are precast segmental bridges erected in balanced cantilever. The Skyway superstructure consists of four frames as defi ned by the position of expansion joints. The fi rst three frames are about 640-m long with a typical span length of 160-m. The box girder is 9-m deep at the pier and 5.5-m deep at mid-span. The shape of the box-girder matches the form of the suspension bridge orthotropic box, providing integrity of form throughout the length of the bridge. The out-side panels are light-weight concrete. The box is 25-me-ters wide and is designed to carry either 5 lanes of highway traffi c with

standard shoulders or 4 lanes of traf-fi c with a light rail system. Typical segments are 8-m long and vary in weight from 7-MN to 5-MN. A total of six 2.5-m diameter steel pipe-piles, about 100-m in length, support the typical skyway pile-cap. The piles consist of driven steel shells with composite reinforced concrete fi ll in the upper section. The thick-ness of the steel shell varies from 75-mm to 50-mm. To ensure proper transfer of loads from the concrete core to the steel shell, the concrete was bonded to the steel shell using welded shear studs in the upper section whilst shear rings were used in the lower section. The piles are generally tipped 4-meters into lower Alameda sands. The use of a large Mencke MHU 1700 hammer with a minimum energy of 1000-kJ was specifi ed in the special provisions. The total number of pile shells to be driven is 160. The total length of the 2.5-m diameter pipe to be installed is 15,000-m. Each pile weighs approxi-mately 365,000-kg. Few commuters realize that the skyway portion of the San Francisco Oakland Bay Bridge East Span is over 85% complete. Learn more about the science behind this landmark project, as well as the current status of the construction at the April 4th SEAONC presentation.

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Continued from page 1

Centennial Contribution

Posting for Membership A Message from the President

codes, however, was the 1933 Long Beach Earthquake. Following this event, the California legislature passed the Riley Act that mandated cities to adopt and enforce building standards that included minimum earthquake design requirements, and the Field Act that mandated public schools be designed for a minimum level of earthquake forces. Note that SEAONC was founded in 1930.

Over the ensuing years, the seismic design approach has evolved to in-clude not only consideration of build-ing mass but also soil conditions, building height, building materials and regional seismicity. The arc of these developments has brought us to a state today where our codes are generally believed by our profession to provide reasonable protection of life safety. In the 100 years since the great 1906 earthquake, our profession has made tremendous progress in the protection of lives from the ravages of intense ground shaking. There is much more to be done to improve the resiliency of our infrastructure of course but our 75 year track record of accomplishment holds bright hope for an exciting future of breakthrough achievements.

During the month of April, SEAONC and many other organizations who have played a role in understanding earthquake dangers and in design-ing to reduce them, will celebrate their collective achievements. EERI in conjunction with USGS, SSA, OES and FEMA and others will convene the 8th National Conference on Earthquake Engineering from April 17-22 (www.1906eqconf.org). The week-long event will include plenary sessions, technical sessions, tutorials and field trips. Please see the newslet-ter flyer for additional information.

Additionally, ATC (www.atcouncil.org) & ENR will host an awards banquet on April 17 at which the top 10 seismic engineers, projects and products of the 20th century will be honored. The black tie event, “Cel-ebrating 100 Years of Seismic Struc-tural Engineering and Construction in the United States,” will be one of several kick-off activities for the “100th Anniversary Earthquake Con-

ference Commemorating the 1906 San Francisco Earthquake” (AKA The 8th National Conference on Earthquake Engineering).

Numerous other events and activities are planned for the month of April. Many of these can be found at the SEAONC website and our ’06 Cen-tennial Committee’s website (www.celebratingeqsaftey.org). Our 06 Cen-tennial Committee has been working hard to put Structural Engineers first and foremost in the minds of the pub-lic when it comes to earthquake safe-ty. Please keep an eye out for emails announcing broadcasts, telecasts and other events highlighting the contri-butions of SEAONC members. It is a time to take pride in the achievements of our profession and I hope that each of you will find a way to participate in the celebration.

-Andrew Merovich

Member SE Mallikarjuna Doddupla Engineer, Nishkian MenningerAnindya Dutta Lead Engineer, Simpson Gumpertz & HegerBrad Erickson Assistant Project Manager, Watry Design, Inc.Francisco Parisi Project Engineer, Structures Rutherford & ChekeneAlexander Sivyer Project Manager, Holmes Culley

Member Derek Beaudoin Staff Engineer (EIT), Watry Design, Inc.Joseph Chan Project Engineer Yeh Chiawang Project Engineer, Middlebrook & LouieAlberto Chong Kennedy/Jenks ConsultantsAhmet Citiptioglu Sr. Engineer, Simpson Gumpertz & HegerRandy Girouard Sr. Engineer, ZFA Structural Engineers

Posting for Membership

James Huegas Civil Engineer, Treadwell & Rollo, Inc.Timothy Lengyel Project Engineer, Winzler & KellyRichard Mao President, CSG Consultants, Inc.Lisa Minakami Project Engineer, DeSimone Consulting EngineersDavid Rafiee Sr. Engineer, Simpson Gumpertz & Heger

Associate Deidra Dawson Engineer, ZFA Structural Engineering Anthony Frontiero Staff Engineer, Dasse Design, Inc.Masume Mansouri Dana Structural Designer, Forell-Elsesser Engineers, Inc.Randy Quan Structural Engineer, KPFFShawhin Roudbari Tunnel Engineer, Hatch Mott McDonaldLeslyn Tsugawa Design Engineer, Middlebrook + LouieJessica Woy Engineer, ZFA Structural Engineers

Student Ibrahim Almufti UC BerkeleyChin Oi Esther Chau UCLARita Jung-yi Chu UC BerkeleyDavid Garcia-Palma UC BerkeleyAnthony Giammona UC BerkeleyAlidad Hashemi PhD Candidate, UC, BerkeleyDaniel Kennedy SFSULindsey Maclise UC BerkeleyMary Turnipseed Stanford UniversitySharon Yen UC Berkeley

Affiliate Mulugheta Belay Bridge Engineer, Caltrans

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Job Forum

DESIMONE Consulting Engineers, a leading national structural engineering firm with a staff of more than 160 em-ployees, has immediate openings in our growing San Francisco office for engineers at all levels, especially experienced Project Managers and Project Engineers. Presently, we are designing a diverse mix of interest-ing and technically challenging projects, including museums, resorts, and residen-tial projects, along with several high-rise buildings ranging up to 75 stories. Ideal candidates should have strong technical, management and communications skills, with a PE license (preferred). We offer a competitive benefits package, coupled with a dynamic work environment. Additional opportunities are available in our New York, Miami, New Haven and Las Vegas offices. Please send your resume via e-mail to [email protected].

NISHKIAN MENNINGER SEEKS EXPE-RIENCED REGISTERED ENGINEER with 5 or more years experience in various types of structures; office buildings, high-rises, schools, multiple-tenant residential & other commercial projects, garages and seismic rehab. Resume & salary requirements to: 1200 Folsom Street, San Francisco, CA 94103 or e-mail: [email protected].

Seeking Resumes for Structural Engineers: Rinne & Peterson Structural Engineers (RPSE) seeks and executes di-verse, challenging projects. Are you custom-er-focused, detail-oriented, flexible, with great communication skills? Want growth opportunity, flexible hours, competitive salary, great benefits and superb working environment? Please fax cover letter and resume to HR, Attn: Sharon, 650.428.2861, or e-mail [email protected].

Tipping Mar + associates seeks an ener-getic, creative individual to join the staff of a dynamic, emerging structural engineering firm. If you have imagination in addition to technical expertise, and would enjoy work-ing in early collaboration with architects and contractors to provide exceptional seismic and sustainable design, please send a resume and cover letter to Tipping Mar + associates, 1906 Shattuck Avenue, Berkeley, CA 94704; fax to 510-549-1912; or e-mail [email protected].

Jacobs Civil Inc. a major nationwide en-gineering firm has an immediate opening for a Structural Engineer for its Walnut Creek, CA office. The successful applicant shall have a CE license in California and a BSCE and at least 3 years experience in facility projects, preparing plans and specs for construction. A MS degree in structural engineering is preferred. Experience in computer programs (SAP2000, ETABS, etc) is required and knowledge of Auto CADD is desirable. Strong written and verbal skills and the ability to work with peers and clients are required. Our office is conveniently located next to the BART Pleasant Hill Station. Jacobs is an Affirma-tive Action, EOE. Please email cover letter and resume to [email protected] or fax to: 925/256-7999. Visit our website at www.Jacobs.com

Degenkolb Engineers is looking for tal-ented engineers to join our San Francisco team. As recognized leaders in seismic engineering, we offer a diverse, challeng-ing mix of projects on new and existing structures. We offer an excellent salary and benefits package. Currently, we are look-ing for engineers with a M.S. in Structural Engineering with 0-3 years of experience. Experience in structural/seismic engineer-ing analysis and design of buildings is a plus. Please see our website atwww.degenkolb.com. EOE. To apply, send a narrative letter about yourself with your current resume to [email protected] or to Degenkolb Engineers, Attn: James Malley, 225 Bush Street, Suite 1000, San Francisco, California 94104.

KPFF Consulting Engineers is seeking Project Engineers & Project Managers for full time employment. Applicants must be motivated and possess excellent written and verbal skills. KPFF offers our employees an environment that supports personal growth, education and training, and the freedom to pursue individual career goals. If you have at least 5 years of design experience, a PE license, an advanced degree in structural engineering, and an interest in Structural Design, we want to hear from you. Send cover letter and resume to KPFF 1160 Battery St., Suite 300, SF, CA 94111. EOE

Hoogerwerf Engineering Group, Inc. is seeking both engineers and CAD tech-nicians for a San Jose firm specializing in the design and detailing of post-ten-sioned concrete structures. All levels of experience will be considered. Please fax resume to 408-323-2005 or e-mail it to [email protected]. See our website at www.hoogerwerfegi.com for more information.

Intel Structural Engineer-Location:Oregon (must be willing to travel to all Intel location Where: construction is being performed) Contact: Patti Kratz, [email protected], 480-723-3857Intel Corporation De-scription: Produce and oversee structural designs of semiconductor process equip-ment installations. Also includes oversight of the structural designs for Intel buildings and nonstructural components with regard to Code compliance, seismic and gravity loading, vibration and integration with existing buildings and facilities. Education: BS in Civil/Structural Engineering or MS in Structural Engineering (preferred). 5 years experience, and PE or Registered Structural Engineer (preferred). Skill Sets: UBC, AISC, ACI codes and other national standards, finite element analysis and other structural analysis programs. Emphasis in seismic analysis and design of concrete and steel structural and nonstructural components is essential. Vibration theory and control, analysis software SAP 2000, RISA-3D or ALGOR-V. A plus is equipment pedestal design, tool installation, SEMI-S2, construc-tion exp. semiconductor facilities.

PEOPLES ASSOCIATES STRUCTURAL ENGINEERS INC., a growing Structural Engineering consulting firm in the Bay Area, is looking for talented and energetic

people to join our Milpitas (San Jose) office. We offer a competitive salary, excellent benefits and a team-oriented atmosphere that encourages professional growth. BS required (MS preferred). Experience is a plus. Mail resume & cover letter to 529 South Main Street, Milpitas, CA 95035. Fax: (408) 957-9221. Email: [email protected]. Check us out on the World Wide Web at www.PASE.COM.

KPFF The Portland, Oregon office of KPFF Consulting Engineers is hiring engineers who have 3 to 5 years structural engi-neering experience, a P.E., and an M.S. or M.Eng. degree. Our current projects range from base isolated and viscous damper renovations to high-end, 30 story condo-minium towers. Portland offers affordable homes; short commutes, and is less than a 2-hour drive from Mt. Hood and the Oregon coast. Visit our website, www2.kpff.com/portland, for more information about KPFF and the Portland area. Please email your resume to Sharon Ellis at [email protected].

Forell/Elsesser Engineers, an award-winning structural engineering firm, offers outstanding career opportunities to engineers with 0 to 5 years experience who seek a dynamic, challenging and rewarding work environment (www.forell.com). An M.S. degree in structural engineering is preferred, but not required. Work on exciting projects and collaborate with innovative design engineers. We offer an unparalleled salary & benefits package, including employer matched 401(k), pen-sion and incentive compensation plans. Contact: Jim Guthrie, 160 Pine St. #600, San Francisco, CA 94111; fax (415) 837-0800 or [email protected].

Jon Brody Structural Engineers is an award winning San Francisco firm with a reputation for design creativity and a high level of professional service. We work on a wide variety of new and retrofit project types, with a focus on the integration of structural requirements with architectural design objectives. Committed engineers with strong design, analytical, and inter-personal skills and min. 2 years design experience in CA are encouraged to apply for Structural Designer, Project Engineer and Project Management positions on our team. Please e-mail resume/cover letter to [email protected].

DASSE Design has openings in San Fran-cisco and Oakland for talented Project Engineers interested in diverse and tech-nically challenging building structures. Our work includes new construction and retrofit, in healthcare, education, civic and biotech. Minimum qualifications are BSCE (MSCE preferred), PE or SE license and 3-10+ years building design/retrofit experience. DSA or OSHPD experience a plus. Position requires strong technical and communication skills, and the desire to collaborate in a professional environment. Send resume with cover letter to William Andrews ([email protected]). Visit us at www.dasse.com www.dasse.com

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Job Forum

Outlook. Minimum 3 years structural drafting experience required. Salary is commensurate with experience. For more information about KPFF, please see our website at www.kpff.com. Please e-mail resume to [email protected], or mail to KPFF, ATTN: WCCADAPP, 1160 Battery Street, Suite 300, San Francisco, CA 94111. EOE.

GFDS Engineers, an innovative, service-driven & successful structural engineering firm specializing in high-end residential, hospitality, historic renovation & other unique projects, is looking to fill Project Manager positions in our San Francisco and Hawaii offices. Candidates must be experienced and highly capable in project management & organization & dedi-cated to the highest quality design. Ability to work confidently & effectively with architects and owners is essential. If you’re an engineer with outstanding problem-solving abilities & the know-how to run high-end projects from start to finish -- with the commitment to client service and the architectural sensitivity to make every project architect look like a hero -- this could be the opportunity you’ve been looking for. Masters degree & S.E. preferred. GFDS of-fers excellent salary & benefits and is an equal opportunity employer. Please email cover letter & resume to: [email protected]

FULCRUM STRUCTURAL ENGINEER-ING has an opening for a full-time project engineer/manager to join our growing SOMA firm. Varied projects include custom residential, commercial, public buildings and historical retrofit and restoration. Applicants must have 7-10 years of experience in structural detailing and preparing construction drawings for build-ings, knowledge of CA/field observation and excellent communication skills. Professional engineering license preferred. We are looking for someone who can run projects from start to finish as a project manager or ready to step up to a project manager position. Excellent salary and benefits package.Email resumes to [email protected] or fax 415-543-0162

LTK Associates, a structural engineering consulting firm in Los Altos is seeking re-sumes from engineers with a minimum of 5 years structural design experience. Please send resumes to [email protected], or fax to: (650) 967-5148.

Sierra Engineering Group seeks a highly mo-tivated, proactive engineer with the following qualifications:·Bachelors/Masters Degree in Structural Engi-neering with sound knowledge ofStructural engineering fundamentals.·3 to 5 years experience in a structural engi-neering design.·P.E. License required·Must have good communication and plan-ning skills.Sierra Engineering Group is a medium-sized firm in the East Bay working on a variety of exciting projects throughout the country, large and small. We offer excellent benefits along with competitive salaries. Please e-mail resume to [email protected] or fax to (510) 429-7951.

Biggs Cardosa Associates has immediate open-ings in our San Jose, San Francisco and Oakland, CA offices! Are you interested in a long-term career with an exciting and growth-oriented firm? In San Jose, we are looking for a Senior Engineer or Project Manager (min. 10 years experience in building design and California SE required). In San Francisco, we are looking for a Staff Engineer, Senior Engineer or Project Engineer (min. 5 years experience in building design and California PE required) - email your resume to [email protected]. In addition, we have openings in our San Jose, CA office for Assistant Engineers - email your resume to [email protected] out more about our firm at www.biggscar-dosa.com. EOE.

PARADIGM Structural Engineers, Inc., has moved to our new home at 450 Sansome Street, 5th Floor, and we are looking for talented Proj-ect Manager, Senior Project Engineer, Project Engineer and Staff Engineer level individuals to come join our dynamic and creative team. At PARADIGM, we work in a collaborative environment which focuses on developing you as a professional while producing some of the most innovative design solutions for our clients. Now is the time to take control of your future and make a “PARADIGM Shift!” Visit us at www.paradigmse.com and see how your qualifications and talents can help you become a contributing member at PARADIGM. Send resume and cover letter to [email protected] or fax to Jennifer at (415) 362-8945.

Structural Engineer – Full or Part-Time Growing engineering firm based in Walnut Creek special-izing in engineering services, seeks engineers for full and part-time employment. Wood, concrete, masonry and steel background and familiarity with building codes and industry standard computer program is a plus. Our pay is commensurate with qualifications; please fax your resume to Lisa at (925) 932-4625.

Structural Project Engineer Has your job hit a standstill? KPFF Consulting Engineers in Walnut Creek is seeking engineers with 1-5 years experience for full-time employment. We are searching for individuals who are motivated, who can multi-task and adapt to the ever-changing work effort, have excellent design and communication skills, and above all, provide exceptional client service. KPFF offers a family-friendly professional environment with flexible hours, an independent work environment with a team approach, and a dynamic group of engi-neers and colleagues. We encourage innovation and high professional standards in our work with minimal organizational structure and restrictions. KPFF offers an environment that supports personal and professional growth, professional training, and the freedom to pursue individual career goals. At KPFF, you control your career. Salary is commensurate with experience. For more information about KPFF, please see our website at www.kpff.com. Please email your resume to [email protected], or mail to KPFF, ATTN: WCAPP, 1160 Battery St., # 300, San Francisco, CA 94111. EOE

Structural CAD Operator KPFF Consulting Engineers has an opening for a full-time Struc-tural CAD Operator at its new location in Walnut Creek. Must be proficient with AUTOCAD Re-lease 14 and AUTOCAD 2004, MS Office, Word &

ConXtech –The Erector Set of the 21st Century By Pat Chow, South Bay Program Chair

Woooohooooo! Remember playing in the sand with bright yellow Tonka trucks with dreams of driving the REAL dump trucks? Remember playing with Lincoln Logs or bolting a series of perfo-rated metal sticks together to make a tall “thing” with your erector set?

Well, ConXtech is much like an erector set, except it is even more simplistic. Inventor/entrepreneur Bob Simmons fascinated the 52 people in the South Bay audience with stories and descriptions of this structural steel system that is geared for quick design, fast and accurate erec-tion, and meets current seismic perfor-mance requirements.

ConXtech evolves around ONE joint. The system is a “moment-frame space frame built around one joint”. The joint is made up of machined steel pieces that are shop welded to RBS steel beams, which are slipped into place at the job site with tight fit-up tolerances. No erection bolts are needed. The connec-tion is finished with high strength bolts clamping opposing pieces of machined assemblies together. Way cool…

The HSS columns are plumbed to extremely tight tolerance with a tripod like jig and field welded to embedded base-plates. The small tolerance require-ment for fit-up and the use of machined parts and robotic welding runs contrary to conventional practice…but they’ve done it. It works.

Mr. Simmons described the extensive research, testing, peer review process, and the eventual acceptance by the City of Palo Alto, San Jose, San Francisco and, soon, Santa Clara.

The tight tolerance that is crucial to the success of this system has driven to manufacture, control, and erect ConX-tech components. The milling and weld-ing machines are run 24/7.

ConXtech is suitable for projects such as residential and mixed-use applications where wood framed construction runs out of steam. More research is being performed to scale up the applications. So…keep on dreaming…..

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The School of Engineering at the Univer-sity of California at San Diego (UCSD), the Portland Cement Association (PCA) of Skokie, IL., and the NEES Consortium Inc. (NEESinc) are pleased to announce a blind prediction contest. The contest is open to teams from the practicing structural engineering community, the academic and research community (including graduate students), and the undergraduate engineering student com-munity (with graduate student or faculty advisors). Between October of 2005 and January 2006, a full-scale vertical slice of a seven-story reinforced concrete wall building was subjected to increas-ing intensity of uniaxial earthquake ground motions on the new NEES Large High-Performance Outdoor Shake Table located at UCSD’s Engelkirk Structural Engineering Center.

Responses were measured using an extensive instrumentation array, and all results have been archived for future release. The largest input motion was the Sylmar Medical Facility free-field record obtained in the 1994 Northridge Earth-quake, which is one of the strongest recorded motions from that event and includes some near-fault ground-motion characteristics. The building slice was designed using a displacement-based and capacity approach for a site in Los Ange-les that resulted in design lateral forces that are significantly smaller than those currently specified in building codes used in the United States. The prediction contest will be “blind” and compare analytical response “pre-dictions” with those measured during experimental testing. All predictions are due on May 15, 2006. There will be three categories of winners and PCA will award a $2500 prize to each winning team. Details regarding the contest rules,

Blind Predicition Contest

the structure, and the ground motions can be found at nees.ucsd.edu/7Story.html NEESinc will also reimburse a representative of the winning team from each of three award categories allowable travel expenses to attend the NEES An-nual Meeting that will be held in Wash-ington D.C. June 21-23, 2006 www.nees.org/4am In addition, all entries will be compiled and compared at a technical session at the NEES Annual Meeting and NEESinc will reimburse Annual Meeting registra-tion fees for a representative from up to eight teams in each of the three categories (practitioner, academic and research in-cluding grad students, and undergradu-ate students) who submit a complete prediction by the May 15 deadline. While names and affiliations of all participat-ing teams will be identified, results will be presented anonymously (unlabeled), except for those of the “winning” entries from each contestant category. The technical session at the NEES Annual Meeting will focus on relevant lessons learned regarding modeling uncertainty, practical needs for improved simulation capabilities or training, and the merits of large-scale testing.

Geotechnical Applications to Design of New(er) Foundation System Alternatives

By Scott Fitinghoff P.E., G.E. and Laura Knutson P.E., G.E.

Pat Chow, Program Chair

As government, commercial, and residential project density increases in Northern California, the geotech-nical challenges prevalent to the area drive the foundation systems to more complex solutions. Two local geotechnical engineers will pres-ent recent case histories of projects constructed in the South Bay Area. These case histories will include a project where structural and non-structural displacement Auger Cast piles were used to address liquefac-tion and moderately compressible soils; a project where Reinforced Aggregate Piers (GeoPiers)™ were used to support a new parking structure adjacent to an existing two-level basement, and a project where ground anchors were used for tie-downs.

An overview of the geotechnical site conditions and review of the geo-technical factors that influenced the selection of the foundation systems by the structural engineers will be presented along with lots of pictures showing the foundation systems be-ing constructed. The presenters will be Scott Fitinghoff, who is a Prin-cipal Engineer with TRC Lowney Associates, and Laura Knutson, who is an Associate and Senior Project Manager with TRC Lowney Associ-ates.

April 11th South Bay Meeting

$150 for up to 450 characters / spaces

$15 for each additional 45 characters / spaces

All Job Forum ads will be printed in the newsletter

and posted on the SEAONC web site.

JOB FORUMInsertion Fees

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2005-06 Committee Chairs

Business Forum Mehri Ansari 415/348-8948 [email protected]

Bylaws C. Vincent deNevers 415/421-0375 [email protected]

Construction Quality & Assurance Tim Hart 510/433-9370 [email protected]

Continuing Education Committee Constantine Shuhaibar 415/986-8400 [email protected]

Disaster Emergency Services Steven Lew415/957-2480 [email protected]

Existing Building David Bonowitz 415/[email protected]

Legislative David Wilson 415/834-2010 [email protected]

Professional PracticesDouglas Hohbach 650/617-5930 [email protected]

Program Hamid Fatehi 415/957-9445 [email protected]

Program (South Bay) Patrick Chow 650/428-2860 [email protected]

Public Affairs & Membership Committee Mei Kuen Liu 415/398-5740 [email protected]

Public Relations (2006 Centennial)Joseph Sutton 415/243-8400 [email protected]

Seismology & Structural Standards Mark Moore 415/[email protected]

Sustainable Design Grace Kang (Co-chair)415/[email protected]

Sustainable DesignAlan Kren (Co-chair)415/[email protected]

Website Darrick Hom 510/910-4142 [email protected]

Younger Member Forum Timothy Graf 415/392-6952 [email protected]

More on DES and the Safety Assessment Program

By Steven Lew, DES Committee Chair

One of the many activities the Disaster Emergency Services (DES) Committee is tasked with is the coordination of the SEAONC volun-teer program and the corresponding Phone Tree. As many of you know, in the event of a major earthquake in California, the State’s Office of Emergency Services (OES) may ask for volunteer Disaster Service Work-ers to respond to calls for assistance from those communities needing people to help quickly evaluate the condition of their buildings. Our Committee would activate the phone tree and initiate contact with en-gineers willing to volunteer their expertise.

The phone tree was recently acti-vated not because of an earthquake within California but because of damage due to Hurricane Katrina. As was recently reported in the December newsletter, 26 Disaster Service Workers from SEAOC, ASCE, AIA, ACIA and CALBO performed rapid assessment duties in St. Ber-nard Parish, Louisiana. Our last in-state activation occurred in 2004 for the Paso Robles earthquake.

If you’re interested in volunteer-ing should another disaster befall a community, you may wish to become a Disaster Service Worker. Disaster Service Workers have completed training in ATC-20 and in the OES Safety Assessment Program (SAP). SEAONC members who complete this SAP training and obtain the State “Disaster Service Worker” card are entered into the Phone Tree so that they may be activated.

SEAONC will be holding another full day ATC-20/SAP Workshop sometime in the future. Until then, there are other training sessions that you may wish to attend in order to become a Disaster Service Worker.

Contra Costa County’s Building In-spection Department is holding ATC-20/SAP training sessions. Interested parties may attend either on April 5 or on May 10 in Martinez. For more information, call Marie Taylor at 925.335.1118 or check online at www.co.contra-costa.ca.us/depart/bi for more information.

In addition, for those of you attend-ing the upcoming 100th Anniver-sary Earthquake Conference at the

Moscone Center in San Francisco, there are two half-day tutorials, com-prising the full day training session. These will be held on April 18 and April 19. For more information, check online at www.1906eqconf.org/tutori-als.htm and look for the description of the “Post-Earthquake Building Assessment” tutorial.

If you have any questions on this program or if you may be interested in the DES Committee, just drop me a line at [email protected].

New Deadline:Excellence in Engineering

Entries will be accepted until April 7, 2006 at 1p.m.

DISPLAY ADS

Full Page $900/mo.2/3 Page $600/mo.1/2 Page $480/mo.1/3 Page $360/mo.1/4 Page $270/mo.1/6 Page $225/mo.

Inserts/Flyers1 sided $1000/mo.2 sided $1200/mo.

Rates are for finished camera-ready black and white ads or proofed picture files with em-bedded fonts. Full payment is required at time of insertion order. For advertising contract, size specifications, and special rates for running an ad for multiple months, contact the SEAONC Office at by e-mail at: [email protected] or phone at 415/974 -5147.

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Welcome New Members Wake Up, Stand Up, Recognize Structural Engineers

April 18, 2006 5:00 AM – 8:00 AM

By: Reinhard Ludke

100th Anniversary of the April 18, 1906 San Francisco EarthquakeLotta’s Fountain - Corner of Market/Kearny Street - San Francisco, California

SEAONC 06’ Earthquake Centennial committee’s objective is to put Structural Engineers and the earthquake safety contributions we have made into the media and public spotlight. The 100th Anniversary Earthquake Conference and numerous associated activities in April will bring national attention to San Francisco and your profession.

Some of the 06’ Earthquake Commit-tee will attend the early morning 100th year anniversary program at Lotta’s Fountain. We will prepare a permanent STRUCTURAL ENGINEER name tag for you to wear, for all SEAONC members that notify us before April 1, 2006 that you plan to attend. This name tag will identify you as a member of SEAONC and the Structural Engineering profes-sion and make us stand out in the crowd that morning. We encourage you to attend and to participate in the activities that week. Check out these web sites: www.celebratingeqsafety.com/ and www.1906eqconf.org. Send an email to me and my assistant if you plan to attend. We will have your name tag ready. [email protected] and [email protected].

Each year, the Public Affairs and Membership committee solicits nominations from the SEAONC membership to honor a member’s dedication and service to the com-munity through the Community Involvement Award. The recent natural disasters highlighted the need of community involvement by professionals more than ever. As citizens with expertise in structural engineering, volunteerism during emergencies may call for perfor-mance of tasks that are physically demanding and even dangerous.

However, members of our associa-tion continue to provide such ser-vices for the safety of the community without seeking compensation or praise.

Now, please take a few moments and nominate a fellow member whose dedication to the community deserves recognition. Nomination forms are included in the newsletter. Please send completed nomination forms, enclosed in this newsletter, to Mei Kuen Liu at [email protected] or fax at 415-398-9834.

Public Affairs & Membership

Member Scott Fischer Project Manager, Hoogerwerf Engineering Group Melissa Henkel PARADIGM Structural Engineers, Inc.Aurea Maldonado Professional Engineer, Civil URS Greiner - Oakland Office

Associate Brandon Berman Engineer, KPFF Min Lin Assistant Engineer, Biggs Cardosa Assoc Inc Hardik Patel Biggs Cardosa AssociatesMark Sorhouet Structural Designer, Structural Engineers Inc Patxi Uriz Engineer, Exponent Srinivas Vemuri Design Engineer, OLMM Consulting Engineers

Student Stephen Bono Stanford UniversityJoseph Cavataio Santa Clara Univ.Matthew Mester Stanford UniversityYuxiang Xin University of Missouri- Rolla

Bulletin Board

Rutherford & Chekene Announces Promotions

San Francisco, CA – The San Francisco-based engineering firm of Rutherford & Chekene has named two new Principals--Joseph Maffei and Larry Fournier--and two new Associates--David Gwie and Jay Yin.

Joseph Maffei, S.E., Ph.D., PrincipalJoe Maffei joined R&C in 1988. With his appointment as Principal, Joe will take a lead role in shaping R&C’s involvement in research and developmentg. An internation-ally recognized expert on seismic engi-neering of concrete buildings. Joe is chair of the Concrete Committee of the SEAOC Seismology Committee, lead author of the concrete chapter of the SEAOC Blue Book, and SEAOC’s official liaison to ACI. He is appointed to committees writing seismic provisions by ACI, the federal Building Seismic Safety Council, and the Federation International du Beton. He has been a lead investigator and author on research projects and design guide-lines for organizations such as the Applied Technology Council,

the Pacific Earthquake Engineering Research Center, the Portland Cement Association, the Earthquake Engineering Research Institute, SEAOC, and BSSC.

Larry C. Fournier, PrincipalLarry Fournier joined Rutherford & Chekene in 1998 where he directs the firm’s market-ing and business development activities. He was associated with architectural and urban design firms for the majority of his 30+ year career, and he has experience and insights into a wide range of market sectors and busi-ness development strategies.

David S. Gwie, S.E., AssociateA California licensed structural engineer, Da-vid Gwie joined R&C in 2000. He has designed a variety of buildings over the course of his nine-year career. Recent projects include the Department of Health Services Office Building in Richmond and the Sutter Medical Center in Sacramento.

Jay C. Yin, S.E., AssociateJay Yin’s ten-year career spans a variety of seismic evaluations, new buildings, and

retrofit designs. Since joining R&C in 1997, he has been involved in two major outsourced OSHPD plan checking contracts for the Kaiser Santa Clara Hospital (an unbonded braced frame building) and for the Cedars-Si-nai Hospital expansion in Los Angeles.

DASSE Design Inc Announces New Principal

In recognition of his strong contributions to their clients and technical leadership of their firm, DASSE Design Inc is pleased to announce that Rafael Sabelli has been promoted to Prin-cipal. Rafael continues to advance the seismic design of steel structures with numerous research papers and design guides for AISC, ASCE, EERI, and SEAONC as well as multiple international engineering publications. He is a member of the AISC Task Committee on the Seismic Provisions for Structural Steel Build-ings, a 2000 NEHRP Professional Fellow, and a past Director of SEAONC and Seismology Committee Chair.

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Rebuilding Together Needs Contributions and Volunteers!

Through the deep generosity of the SEAONC membership, this year’s Rebuilding Together team has already collected $6400. Our commitment as a facility sponsor is $7500. We are getting closer, but we still need your help. We hope not simply to meet this financial commitment, but to exceed it. This is SEAONC’s 15th year of participation in this annual chari-ty event. Rebuilding Together (formerly Christmas in April) is a nationwide, nonprofit organization that coordinates volunteers and sponsorship in an effort to renovate neighborhood facili-ties and repair the homes of low-income, disabled and elderly homeowners.

Every year, thousands of people reach out on the last weekend in April, in San Francisco and around the country. SEAONC has a strong history in this annual event, and has been known by Rebuilding Together as its strongest sponsor at the residen-tial level. Two years ago, for the first time, SEAONC sponsored a “facility” project. Last year, SEAONC sponsored another facility project. We had a turnout of over 60 volunteers, who completed a wide range of projects at Gateway Charter High School in San Francisco.

This year, SEAONC’s facility project will be a Women’s Re-entry and Restorative Justice Center. This center provides a transi-tion zone for women exiting the criminal justice system to help get their feet back on the ground. There will be a health clinic, counseling classes, a library, computer learning stations, career services, a place for children to play, and more. We are very excited and think this will be a great fit for SEAONC because of the skills and enthusiasm that our volunteers bring to the table. Please consider volunteering this year on Saturday, April 29th. This opportunity is open to anyone interested, and is a great way to make an impact in our community and have fun doing it.

In order for SEAONC to participate again this year, we still need donations. We send all donations to Rebuilding Together, and they in turn fund our project. Please consider contribut-ing to Rebuilding Together. In addition to official sponsorship, SEAONC has annually provided the entire volunteer team to do the work. This is beyond our commitment, and a tradition that shows our heart and our dedication.

We have one month left to raise funds for our project this year and to gather volunteers. If you would like to make a donation for SEAONC’s team this year, please send your tax-deduct-ible donation, payable to Rebuilding Together, to the address below. You will receive a receipt for your donation, and ac-knowledgement in the SEAONC newsletter. There is no specific amount requested, and small donations add up to significant numbers.

Send all donations to: Rebuilding Together c/o Lucie Fougner Degenkolb Engineers 300 Frank H. Ogawa Plaza, Suite 450 Oakland, California 94612 510.272.9040 Ext. 219 [email protected]

To volunteer, contact: Jennifer Eggers510.272.9040 Ext. 212 [email protected]

SEAONC MEMBERS INTERVIEWED BY MEDIA ABOUT PROFESSION, POST-1906 SAN FRANCISCO BUILDINGS, AND SEISMIC SAFETY TODAY

Thanks to the efforts of the SEAONC ’06 EQ Centen-nial Planning Committee, over the past several months TV, radio and newspaper reporters and journalists have interviewed several structural engineers as part of the Bay Area’s news coverage leading up to the 100th-year celebration of the 1906 San Francisco Earthquake and Fire on April 18, 2006.

Reinhard Ludke and David Bonowitz, for example, were both interviewed for a TV documentary called “Shock Waves” that will air on CBS – KPIX Channel 5 in the Bay Area twice during prime time in April and will also be distributed on DVD, on the Internet. At the time of this writing, Andy Merovich and Pat Buscovich were slated to be interviewed for an hour-long news program to be aired on ABC - KRON Channel 7 on April 8. Other structural engineer interviews for television programs are in the works to be aired throughout April.

Joe Ungerer and Ashfar Jalalian were interviewed by KGO Radio on their seismic retrofit work at St. Dominic’s Church in San Francisco and several structures at UC Berkeley respectively. In addition, Joe Sutton was inter-viewed on KGO on the potential threat of another major quake to Bay Area businesses and our local economy, as well as the value of performance-based earthquake engineering.

Every major newspaper in the Bay Area is planning on a series of articles leading up to the April 18th event. SEAONC members are actively helping these journalists with parts of their stories that deal with the performance of buildings and infrastructure before, during and after an earthquake. For example, the San Francisco Chronicle will have a major article in the April 16th Sunday Maga-zine on the predictions of another major quake in the Bay Area and an overview of the historical buildings that survived 1906. Both Pat Buscovich and Ron Hamburger provided extensive research and background informa-tion for these articles. Charlie Kirschner and Chris Poland were also interviewed.

In the meantime, SEAONC has issued several press releases to the media to keep journalists informed of the organizations’ opinions and insights on key subjects. Please visit the website, www.celebratingeqsafety.com-press-releases.html to review these most recent releases:

-“Bay Area Structural Engineers Group Warns Business-es To Take Action Now To Minimize Potential Economic Losses And Prepare For Next Earthquake”- “Bay Area Structural Engineers Urge That Seismic Ret-rofitting Play An Integral Role In California’s Strategic Growth Plan”

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APR

4 SEAONC Dinner Meeting City Club, San Francisco

11 SEAONC South Bay Dinner Meeting Michael’s, Mt. View

San Francisco Meeting-April 4th, & South Bay Meeting-April 11th NAME

COMPANY

ADDRESS

CITY STATE ZIP

PHONE FAX

EMAIL RSVP by Fax: 415/ 764-4915, e-mail: [email protected], Phone: 415/974-5147

Reg

istra

tion

Cost - S.F. Meeting Pre-Regisration Late Reg. SEAONC o $39 o $44 Junior Mbr. (29 & under) o $33 o $38 Student o $15 o $15 Non-Mbr o $44 o $49

Registration Deadines: Monthly Mtg: Noon, Thur. Mar 30, 2006& South Bay: Noon, Thur April 6, 2006

Credit Card#:

Expiration date:

Signature:

• Paying by check make payment to SEAONC.• Paying online (monthly meeting only) go to: http://www.seaonc.org/member/member_s/events/order_form.asp • Paying by credit card provide the following: (SEAONC Accepts VISA, MC, AMEX)

S.F. Program 4/04

Note: Payment is required by evening of the meeting.

Register early, seating is limited. No cancellations after deadlines listed above. No-shows are still responsible for full attendance fee.

5:45 pm Assembly6:30 pm Dinner7:30 pm ProgramCity Club155 Sansome Street10th FloorSan Francisco

Cost - South Bay Meeting Pre-Regisration Late Reg. SEAONC o $28 o $33 Junior Mbr. (29 & under) o $20 o $25 Student o $15 o $15 Non-Mbr o $33 o $38

5:45 pm Assembly6:30 pm Dinner7:30 pm ProgramMichael’s at Shoreline2960 Shoreline Blvd.Mnt. View

South Bay Program 4/11