Happy New Year everyone! Hopefully you all had a chance to enjoy some time off and enjoy time with friends, family and loved ones as we enter a year facing the many new changes that lie before us. I know that I, for one, did and it was a great “staycation” as we spent several days walking local beaches, seeing new movies that have come out and we explored all the wonderful things you can do with a big box of chanterelle mushrooms a buddy and I found basically in my own back yard. You can prepare them sautéed as appetizers on toothpicks, top them over tomato cream pasta, sprinkle over scrambled eggs and the BEST, make chanterelle stuffed ravioli! Awesome!

OK, so….the incoming year promises to be exciting for us structural engineers. First, we all love a new code, right? Well we’ve got one, the 2016 California Building Code became effective on January 1st. From where I’m sitting, it looks like the biggest change is in Chapter 34 where that now becomes the 2016 California Existing Building Code. Note also that some of the reference standards have also changed. So far those include ACI 318, ACI 530 and the NDS. As we move on into the year though, I’m sure we will find more wonderful changes but the good news is that we all will be able to learn all we need to know to continue to do your jobs by attending our Spring Seminar in March on the 8th and 15th at the PG&E Auditorium so save the date on your calendars.

Also, the second week of the month, we have the 16th World Conference on Earthquake Engineering in Santiago, Chile. As I looked over the list of speakers, of which there seem to be at least a hundred or more from all around the world, I was extremely pleased to see so much participation by SEAONC members speaking on really great topics. I’m proud to say that it’s another shining example of how we here at SEAONC continue to be world leaders in designing better structures to resist earthquakes. I’m sure all of you that are attending will represent us well. I only wish I could go to see you all in action.

- 1 -

President’s Message... pg 1, 2 Save the Date: Spring Seminar...pg 2 SE3 Committee Symposium... pg 2Diaphragm Flexibility Requirements for Wood-frame Diaphragms Article ... pg 3 - 5In Memoriam.. pg 7Job Forum...pg 9

JANUARY 2017

575 Market Street | San Francisco.CA, 94105-2870 email : off ice@seaonc.org | 415-974-5147

www.seaonc.org

Vol. XX, No. 1

Founded in 1930, SEAONC’s mission is to advance the art and science of structural engineering, to maintain the honor and dignity of the profession, and to enlighten the public regarding the province of the structural engineer. See our History, Mission Statement, and Bylaws for more information.

Posting for MembershipIn order to view new applicants posting for membership, you must log into the SEAONC website. SEAONC member access only.

SE3 Symposium • Thursday, January 26• 1:00 PM - 5:00 PM• SPUR

654 Mission StreetSan Francisco, CA

2017 Spring Seminar• Wednesdays, March 8 &

March 15, 2017• 5:30PM - 8:30PMNOTE NEW START TIME• PG&E Auditorium

77 Beale Street

San Francisco, CA

MEETING NOTICES

HOW TO GET INVOLVEDBecome a member: Select the appropriate membership level for you and complete the applicationMonthly meetings: Meet and mingle with fellow engineers. Register through the link in this month’s newsletterJoin a committee: Click here to see a description of each committee, contact the committee chair to ask how you can help, join the committee email list, or just show up to a committee meetingMake a suggestion: Have an idea and want to help with something that SEAONC is not already pursuing? Email a SEAONC Board Member. Ad-hoc committees can address specific needs.Become a sponsor: Support SEAONC and showcase your company’s services at the SEAONC events through sponsorship!

PRESIDENT’S MESSAGE

...continue on pg 2

INSIDE THIS ISSUE

Structural Engineers AssociationO F N O R T H E R N C A L I F O R N I A

President’s Message (Con’t from pg 1

Next, on January 26, there will be the SE3 Symposium 2017. This promises to be both an exciting and informative event being held at San Francisco SPUR on 654 Mission Street. This will take place between the hours of 1:00 PM to 5:00 PM and will feature three information-packed sessions entitled “Listen, Assess and Change” that will address the fantastic work our SE3 Committee has done over the last couple of years. Their findings from their recent survey should be a true eye opener as to how we affect equity and engagement in our structural engineering practices in the years to come. It will be followed by a networking event that will feature fine refreshments that should encourage good discussion amongst us all. Special thanks go out the sponsors of the event, Thornton Tomasetti and Arup!

Finally, because we will not be having regular members meetings this month, our next encounter will be either at the San Francisco meeting being held on February 7th at the City Club or at the South Bay meeting on February 21st at Michael’s at Shoreline. Seeing as we will not be having as many meetings as in the past at the City Club, let’s have a great turn-out and whoop it up. Have a great January and we will see you there!

Dick

- 2 -

SE3 Committee 2016 Report Published & Upcoming Symposium

The SEAONC Structural Engineering Engagement and Equity (SE3) Committee has published its 2016 report, which is available online at SE3project.org. The report features insights on the 2016 survey findings regarding career advancement, compensation, and work-life balance, as well as a list of best practices, which the committee recommends for consideration by structural engineers of all levels.

The SE3 Committee is also hosting our first half day symposium on January 26, 2017, and registration is now open! The theme of the inaugural symposium is: Listen. Assess. Change. Focused around the committee’s 2016 survey findings, speakers and panelists will explore the issues affecting engagement and gender equity in structural engineering, share their personal experiences on these topics, and discuss relevant programs or policies they have enacted within their organizations.

This program is geared toward all members of the structural engineering profession, but is also relevant to the A/E/C industry at large. The SE3 committee encourages attendance by everyone from principals to students to begin the discussion on this important topic.

SE3 SYMPOSIUM: LISTEN. ASSESS. CHANGE.Date: THURSDAY, JANUARY 26, 2017

Time: 1PM-5PM with networking event to followCost: $85 General / $40 Student

Location: SPUR, 654 Mission Street, San Francisco

Visit SE3project.org/register for information and to register.

Sponsorships opportunities are still available – contact us at SE3@seaonc.org for information or visit SE3project.org/sponsors for more information.

New Provisions and Changes in the 2016 CBC

Date: Wednesdays, March 8 and 15, 2017Time: 5:30 – 8:30 p.m. <--NOTE NEW START TIME!

Location: PG&E Auditorium, San Francisco

The 2017 SEAONC Spring Seminar will cover the newest provisions in the 2016 California Building Code (CBC). Based on the 2015 International Building Code, the 2016 CBC went into effect on January 1, 2017. This seminar will present an overview of the most significant changes in the code with special focus on the new material reference standards for concrete, masonry, and wood. We will also discuss the latest special inspection requirements in CBC Chapter 17, and the newly formed California Existing Building Code (formerly CBC Chapter 34). Through this seminar, attendees will gain a better understanding of the key code changes relevant to the practicing structural engineer.

SAVE THE DATE:2017 SEAONC Spring Seminar

Determining diaphragm flexibility for wood-frame diaphragms is confusing because the 2015 International Building Code (IBC 2015) contains three different sections relating to the design of diaphragms. Two of these sections reference the detailed provisions given in ASCE 7-10 and SDPWS 2015, which conflict with IBC 2015 Section 1604.4.

• Section 1604.4 states the following: “…A diaphragm is rigid for the purpose of distribution of story shear and torsional moment when the lateral deformation of the diaphragm is less than or equal to two times the average story drift…”

• Section 1613.1 specifies that all structures subjected to earthquake loads shall be designed in accordance with the reference standard ASCE 7-10 Minimum Design Loads for Buildings and Other Structures.

• Section 2306.2 specifies that the 2015 edition of Special Design Provisions for Wind and Seismic (SDPWS 2015) shall be used for design of wood diaphragms.

• The Seismology Light Frame Sub-committee of the Structural Engineers Association of California (SEAOC) has reviewed the inconsistencies between IBC 2015 and reference standards and is of the opinion that diaphragm flexibility provisions in ASCE 7-10 and SDPWS 2015 should be used for the design of wood diaphragms in lieu of using IBC 2015 Section 1604.4. The differences between IBC 2015 and reference standards and the rationale for recommended use of ASCE 7-10 and SDPWS 2015 provisions are discussed below.

IBC Reference to ASCE 7-10 – Diaphragm Flexibility

Per IBC Section 1613.1 Earthquake Loads, structures shall be designed and constructed in accordance with ASCE 7-10. ASCE 7-10 provisions for diaphragm flexibility in Section 12.3.1 require the use of a semi-rigid modeling assumption in which relative stiffness of the diaphragm and vertical force resisting elements are explicitly considered in the design, unless the diaphragm can be idealized as either flexible or rigid:

“12.3.1 Diaphragm Flexibility…..Unless a diaphragm can be idealized as either flexible or rigid in accordance with Sections 12.3.1.1, 12.3.1.2, or 12.3.1.3, the structural analysis shall explicitly include consideration of the stiffness of the diaphragm (i.e., semirigid modeling assumption).”

The use of semi-rigid modeling for purposes of distributing horizontal forces is always permissible under ASCE 7. This method is widely considered rational for use in distributing horizontal diaphragm shear loads to vertical resisting elements. However, idealizations of diaphragm flexibility are often used to simplify analyses and are considered appropriate provided certain conditions are met.

Wood-frame diaphragms are permitted to be idealized as flexible per Section 12.3.1.1:

“12.3.1.1 Flexible Diaphragm Condition. Diaphragms constructed of untopped steel decking or wood structural panels are permitted to be idealized as flexible if any of the following conditions exist:a. In structures where the vertical elements are steel braced frames; steel and concrete composite braced frames; or concrete, masonry, steel, or steel and concrete composite shear walls.b. In one- and two-family dwellings.c. In structures of light-frame construction where all of the following conditions are met:1. Topping of concrete or similar materials is not placed over wood structural panel diaphragms except for nonstructural topping no greater than 1 1/2 in. (38 mm) thick.2. Each line of vertical elements of the seismic force resisting system complies with the allowable story drift of Table 12.12-1.”

Wood-frame diaphragms are permitted to be idealized as flexible per Section 12.3.1.3:

“12.3.1.3 Calculated Flexible Diaphragm Condition. Diaphragms …are permitted to be idealized as flexible where the computed maximum in-plane deflection of the diaphragm under lateral load is more than two times the average story drift of adjoining vertical elements of the seismic force-resisting system of the associated story under equivalent tributary lateral load …”

ASCE 7-10 does not contain provisions for a wood-frame diaphragm to be idealized as rigid. Within ASCE 7-10, only concrete slab or concrete-filled metal deck diaphragms that meet specific requirements of Section 12.3.1.2 are permitted to be idealized as rigid.

Diaphragm Flexibility Requirements for Wood-frame Diaphragms in the 2015 International Building Code

Gary L Mochizuki, PE, SE, LEED AP1, Philip Line, PE2, Tom VanDorpe, SE3

- 3 -

Diaphragm Flexibility Requirements for Wood-frame Diaphragms in the 2015 International Building Code

Gary L Mochizuki, PE, SE, LEED AP1, Philip Line, PE2, Tom VanDorpe, SE3

- 4 -

Within ASCE 7, the diaphragm flexibility classification (i.e. semi-rigid, idealized as flexible, or idealized as rigid) not only describes a permissible method for distribution of horizontal forces, but also affects consideration of special criteria and associated limitations for torsional irregularities, inherent torsion, accidental torsion, and amplification of accidental torsion.

IBC reference to SDPWS 2015 – Diaphragm Flexibility

Per IBC Section 2306.2, wood-frame diaphragms shall be designed and constructed in accordance with AWC SDPWS. In accordance with SDPWS, distribution of shear to vertical seismic force resisting elements based on an analysis where the wood-frame diaphragm is modeled as “semi-rigid”, “idealized as rigid” or “idealized flexible” is permissible. The SDPWS condition where a diaphragm is idealized as rigid is the opposite of the flexible diaphragm condition described in ASCE 7, Section 12.3.1.3:

“4.2.5… It shall be permitted to idealize a diaphragm as rigid when the computed maximum in-plane deflection of the diaphragm itself under lateral load is less than or equal to two times the average deflection of adjoining vertical elements of the lateral force-resisting system of the associated story under equivalent tributary lateral load. …”

The terms “average deflection of adjoining vertical elements” is the vertical seismic force resisting element (e.g. shear wall) deflection within a story such that the calculation-based flexibility would be either idealized as flexible (per ASCE 7 calculation method) or idealized as rigid (per SDPWS calculation method). This calculation-based criteria for wood diaphragm flexibility originally appeared in 2000 NEHRP Provisions for New Buildings and Other Structures to address special criteria for open front structures with cantilevered diaphragms that were rigid and met other limits for permissible aspect ratio, materials and construction.

Within SDPWS, diaphragm flexibility classification is used to describe methods for distribution of horizontal forces, and is used as a limitation on permissible analysis methods for certain structural configurations. For example, for loading parallel to open side of open front structures with cantilevered diaphragms, it is required that wood diaphragms are modeled as semi-rigid or idealized as rigid and incorporate limits on maximum story drift at structure edges. An envelope analysis is permitted as an alternative to semi-rigid modeling whereby distribution of horizontal diaphragm shear to each vertical seismic force resisting element is the larger of the shear forces resulting from two separate analyses where the diaphragm is idealized as flexible and the diaphragm is idealized as rigid.

IBC Section 1604.4 – Diaphragm Flexibility

Per Section 1604.4 of the 2015 IBC, a diaphragm is rigid if it has a lateral deformation less than or equal to 2 times the average story drift:

“1604.4…..A diaphragm is rigid for the purpose of distribution of story shear and torsional moment when the lateral deformation of the diaphragm is less than or equal to two times the average story drift. Where required by…..”

Unlike ASCE 7-10 or SDPWS 2015 provisions which do not restrict use of semi-rigid modeling, the general statement “is rigid” in 1604.4 could be interpreted to require use of a rigid diaphragm assumption for distribution of story shears under certain conditions without the option of semi-rigid modeling or the flexible assumption prescribed in ASCE 7. Additionally, provisions for determination of a rigid diaphragm condition itself does not incorporate “of adjoining vertical elements” after “average story drift” which may be interpreted as including effects of diaphragm deflection in the average story drift calculation. This wording in 1604.4 departs from the more restrictive provision in SDPWS for idealizing a rigid diaphragm because it allows a reduced diaphragm stiffness relative to SDPWS. Also, wording in 1604.4 allows the use of a rigid diaphragm even if the building has horizontal irregularities, which is in conflict with the more restrictive provision of ASCE 7 limiting use to buildings without horizontal irregularities. Table 1 shows the various code provisions and their associated modeling assumptions.

- 5 -

Diaphragm Flexibility Requirements for Wood-frame Diaphragms in the 2015 International Building Code

Gary L Mochizuki, PE, SE, LEED AP1, Philip Line, PE2, Tom VanDorpe, SE3

Summary

Different provisions for diaphragm flexibility and wood diaphragms in operative building codes/standards are a potential source of con-fusion to designers and plan reviewers. Based on the arguments presented, the SEAOC Seismology Light Frame Sub-committee recommends the following:

Diaphragm flexibility requirements shown in ASCE 7 and SDPWS should be used for wood diaphragms. General provisions of IBC 1604.4 for “rigid” diaphragm and associated distribution of horizontal shear forces should not modify or supersede specific coordi-nated provisions in the reference standards. This indicates a need for change within the IBC. Because specific provisions of ASCE 7 and SDPWS provide options to the design professional without restriction on use of semi-rigid modeling, Section 1604.4 of the IBC should be revised to remove or revise the conflicting language to conform to ASCE 7 and SDPWS.

1Gary Mochizuki is Chair of the Seismology Light Frame Sub-committee of the Structural Engineers Association of California (SEAOC) and Senior Research and Development Engineer for Simpson Strong-Tie

2Philip Line is Senior Director, Structural Engineering for the American Wood Council3Tom VanDorpe is a member of the Seismology Light Frame Sub-committee of the Structural Engineers Association of California (SEA-

OC) and President for VCA Structural, Inc.

Engineers Alliance for the Arts

EAA Student Impact Project – Call for Volunteers!

ENGINEERS ALLIANCE FOR THE ARTS (EAA), which facilitates a unique classroom bridge-building program in San Francisco, the East Bay and Belmont, is looking for volunteer engineers, architects, design and construction professionals to fill the teaching spots for our 2017 program. This is a great opportunity to give back to the community — particularly to inspire high school students to potentially pursue engineering or design in college — and also polish your knowledge of bridge design and construction. This teaching opportunity is open to professionals at all levels, whether you are new to the industry, a tenured professional or retired.

Volunteer/Teacher Orientation: ................ Wednesday, January 25, 201710-Week Program: ..................................................... February – AprilAwards Event: ................................................................ Saturday, April 15, 2017

If you are new to the program, don’t worry! Every class will have a lead Volunteer to run the lesson plans. We will also have an orientation with information on the program and to meet your volunteer team and high school teachers. The time commitment is about 3 hours per week (1.5+ hour teaching, 1 hour transportation to and from class, and 0.5 hour of preparation).

Please contact EAA’s executive director Michelle Lehman at eaabayarea@gmail.com if you are interested in participating. For more information about the program, check out the website: www.eaabayarea.org.

Even if you can’t participate this year, please help spread the word to coworkers and other engineers or architects you may know.

Engineers Alliance for the Arts

2125 Ygnacio Valley Road, Walnut Creek, CA 94598

eaabayarea@gmail.com

A 501(c)(3) nonprofit organization

The Student Impact project emphasizes learning in all STEAM-related fields… Science, Technology, Engineering, Art and Mathematics.

In Memoriam

- 7 -

David L. MessingerFebruary 5,1928 - October 30, 2016

SEAONC Lifetime Member SEA member of SEAONC since 1957, David Messinger passed away on October 30, 2016. The last meeting he attended was the Past-Presidents’ Dinner in June 2016 where he enjoyed visiting with many long-time colleagues.

David was raised in Denver, Colorado, and graduated from the University of Colorado with a degree in Civil Engineering in 1950. On the following day, he boarded a Greyhound bus bound for San Francisco. His first job was with Bechtel where John Sardis was his boss and Dan Shapiro sat at the drafting board next to his.

In 1962, David and Frank McClure formed a partnership and had a consulting practice in Oakland. In 1975, when Frank left for a position at UC Berkeley, David continued to operate the firm as David L. Messinger & Assoc. After a career spanning 44 years, 32 in private practice, he retired in 1994.

He designed the Kaiser Hospital in South San Francisco, Napa Community College and many churches, schools, hospitals, commercial and heavy industrial buildings, thin shell structures and restoration and seismic strengthening of historic buildings throughout the Bay Area.

About half of his business was as a consultant on seismic analysis to clients including the University of California, Berkeley, the Lawrence Berkeley National Laboratory, Office of the State Architect, Oakland Unified School District, Kaiser Foundation Hospitals and the Oakland Catholic Diocese and the cities of Oakland and San Francisco.

In 1971, with the hiring of Ashraf Habibullah, just out of UC Berkeley with his Master’s Degree, David led his company into the computer age, and he embraced the changes the new technologies brought to the profession. His first computer was a Radio Shack TRS80. He was a Director for two years before becoming President of the SEAONC in 1974-75. He served on several committees including the Seismology Committee, which he chaired from 1981-85. In recognition of his service, he was elected to the College of Fellows of the SEAONC in 2004.

He was a member of the SEAOC Board of Directors in 1970-71 and 1975-78 and served on several committees. He was active in the development of building code regulations for seismic resistance of structures through his work on the SEAOC Seismology Committee whose task was to rewrite the seismic design provisions of the 1988 Uniform Building Code. He chaired this committee for two years. He also served on the committee to update the seismic design provisions of the San Francisco building code.

Other professional organizations he was affiliated with include the Earthquake Engineering Research Institute (EERI), the Applied Tech-nology Council (ATC) in which he was a member of the Board of Directors and the Seismology Society of America. He wrote over twenty professional papers, several appearing in publications and some presented at conferences overseas, including Beijing, in 1986, where his “Proposed Changes to Seismic Design Provisions of the UBC (USA)”, was read at a Colloquium on Building at a time of great change in China.

He was an accomplished organist and enjoyed photography, traveling and keeping abreast of advancements in earthquake research and other scientific subjects. He served on the peer review board for the Oakland Diocese until 2013. He is survived by Carol, his wife of 65 years, his three children and five grandchildren.

ENGINEERS ALLIANCE FOR THE ARTS BRIDGE PROJECT CALL FOR VOLUNTEERS

Patrick Murren, EAA SIP CoordinatorThis spring, the Engineers Alliance for the Arts (EAA) is returning with its annual Student Impact Project (SIP) bridge-building program. This program places volunteer engineers in Bay Area classrooms to provide technical expertise in assisting high school students to complete a hands-on bridge design and construction project. Over its 16 years, the EAA program has made a powerful impact on thousands of students by teaching basic design principles and introducing program participants to the engineering profession.

EAA is looking for more volunteer engineers to help out with this year’s SIP. The time commitment is relatively light – approximately 2-3 hours total of prep work, transportation, and classroom time per week over the program’s 10-week period. Previous participants have found volunteering with EAA to be great opportunities to educate students about pursuing engineering careers, to practice public speaking and leadership, and to use our unique technical skillsets to give back to our communities. Each year the EAA SIP is a deeply positive experience for participating students with many citing how much they enjoy working with the volunteer engineers.

Please see the EAA Volunteer flyer in this newsletter for more details regarding key dates and program information. If you’re interested in volunteering, please contact EAA Executive Director Michelle Lehman (eaabayarea@gmail.com) or EAA SIP Coordinator Patrick Murren (patrick.murren@som.com) to register. This year’s Orientation meeting is coming up soon on Wednesday January 25th, so we hope to hear from you soon.

- 8 -

• Meets section 2303.2 “Fire-retardant-treated wood” of the International Building Code as demonstrated by complying with the guidelines of ICC ES AC124. - Surface burning characteristics in accordance with extended ASTM E84 fire test

- Durability tested - Mechanical properties evaluated after coating

- Corrosion effects of fire-retardant coating

• Allows all the benefits of TimberStrand LSL Rim design properties, including fastener values with no reductions required

• Allows for design and framing of common platform construction

• Ensures a rim board depth that will structurally perform to transfer vertical and lateral loads.

A UNIQUE SOLUTION FOR A DEMANDING SPECIFICATIONIntroducing a Code-evaluated Trus Joist® FRT Equivalent Rim Solution

Learn more at trusjoist.com/fl ak-jacket or call 888-453-8358.

Martin/Martin, Inc. Job Title: Structural Professional Engineer/Project ManagerJob Description: Martin/Martin’s structural engineers are known for creativity and technical excellence. Through practical and innovative engineering design solutions, we continually strengthen our reputation as the predominant structural engineering firm in our region, and as a national leader. Consistent high quality service has lead to many long-term relationships and client advocates for our firm. While maintaining our expertise in a broad range of traditional structural engineering services, we also seek opportunities outside the traditional role.Martin/Martin is looking for an experience Structural Engineer to join our Larkspur, California office. The position will provide opportunities to design structures throughout Northern California and national locations in markets such as healthcare, commercial office, sports & entertainment, and education. We are client focused and employee centered.

Job Requirements: Required Qualifications:Four to 10 years of progressive structural engineering design experienceBachelor’s degree in Architectural, Civil, or Structural EngineeringStrong knowledge of building and design codesExcellent time management and organizational skillsSelf-motivated and able to work independently for extended periods of timeStrong written, technical, and interpersonal skillsCommitted to client service and a team-based approachHas a PE license in the State of CaliforniaDesired Qualifications:Master’s degree in Architectural, Civil, or Structural EngineeringExperience using Autodesk Revit to produce building construction documentsExperience analyzing structural using SAP, ETAB, or RISAProject management experience including managing budgets and supervising staff

Has an SE in the State of CaliforniaSend your resume and cover letter to careers@martinmartin.com

Mar Structural Design Job Title: Engineers (Commensurate with Experience)Job Description: Mar Structural Design is looking for skilled and enthusiastic engineers. If you are inspired to invent and create in an exciting and collaborative environment, please e-mail us a thoughtful note telling us about yourself. We are a mission-driven firm on the forefront of performance-based seismic design and sustainable design. Excellent engineering skills are expected along with a commitment to continual learning.Job Requirements: Our ideal candidate has at least four years of design office experience, a Master’s degree in structural engineering, and is licensed in California. S/he enjoys working collaboratively, thrives on reciprocal learning, and demonstrates a knack for seeing the “whole project”. Architectural training, experience in designing in several structural materials, the ability to create thoughtful design details, and an interest in high-performance seismic and sustainable design, are all considered pluses. This is an opportunity to shape both your career and our robust growing firm.Contact: Taline Mittental ine.mit ten@marstructuraldesign.com

Buehler&Buehler Structural Engineers, Inc. Job Title: Mid-Senior Level Structural EngineerJob Description: Buehler & Buehler Structural Engineers, Inc. (B&B) provides a wide range of structural engineering services throughout the United States. For over 70 years, B&B has developed practical, economical structural engineering solutions utilizing expert implementation of conventional and performance-based design techniques. B&B’s philosophy is based on the belief that each project has a unique solution that will best fit its individual parameters. We are dedicated to understanding the overall project needs and goals to offer structural solutions that enhance and add value.We are currently seeking a Mid-Level Structural Engineer to join our team!

Responsibilities:• Acts as project engineer and manager for design of new structures and retrofit of existing structures• Develops project structural design criteria, including system selection and framing/foundation schemes• Develops and reviews structural design calculations and details• Maintains the schedule of the project• Coordinates outstanding issues with team members• Supervises and mentors staff engineers, provide technical guidance to BIM Technicians• Provides construction administration support• Active participant in development of in-house standards• Active participant in business development efforts

B&B offers a competitive salary and excellent benefits including medical, dental, 401(k), profit sharing, paid holidays, vacation and sick time, life insurance, and annual bonuses, as well as the opportunity for advancement. Opportunities available in all California offices - Sacramento, San Francisco, Los Angeles and our new Silicon Valley office!

Job Requirements: Minimum Requirements: Bachelor’s Degree in Civil or Structural Engineering, Master’s Degree (Structural focus) preferred California P.E. or S.E. license Minimum of 3 years of experience in structural design and analysis of new and existing commercial, municipal and historical buildings Design experience in a wide range of structural materials and project types Ability to prioritize and schedule project workflow Excellent communication and interpersonal skills Ability to work in a highly collaborative environment with our clients and team members Self-motivated with the ability to work independently Ability to work in a fast-paced environment

JOB FORUM

- 9 -

Experience with REVIT, ETABS, SAP, RAM and AutoCAD Commitment to long term employment with an interest in helping to propel our firm forward in the coming years

Please submit cover letter, resume and references to resumes@bbse.com!

Holmes Consulting GroupJob Title: Structural Engineers-New ZealandJob Description: We’re looking for experienced engineers to join our successful, busy New Zealand team—and you could live in one of the most beautiful, peaceful and welcoming places in the world! We’ve got offices all over New Zealand, so whether it’s Auckland, Hamilton, Wellington, Christchurch or Queenstown that takes your fancy, we’ve got you covered. We’ve got a strong US connection, with a sister company in California and a number of great US people already based in our New Zealand offices and enjoying everything New Zealand has to offer. Holmes Consulting is at the forefront of structural engineering in New Zealand. Our engineers bring decades of work experience and technical knowledge to bear on some of the most technically challenging and socially important engineering challenges in the world. Your approach will epitomize the commitment to design, technical quality and innovation that defines Holmes Consulting. Ideally, you’ll have 5 or more years of seismic design experience. Our engineers work closely with our clients and other partners, so you’ll have excellent communication skills, be creative and solutions focused. Many of our leaders started with us as graduates, so if you want to develop your career, Holmes Consulting can offer a clear and well-defined path forward. Along the way, you’ll be working with some of New Zealand’s leading engineers--people who continue to lead innovation and advancement in our country and beyond. You’ll get the benefit of their knowledge, learning alongside the best. And beyond our own walls, we’re active members of the wider engineering community, attending and presenting at global engineering conferences, as well as contributing to committees like SEAONC, SESOC, IPENZ, to name a few.Hard work’s a big part of what’s got us where we are today, but it’s not the final

word. At Holmes Consulting, we have a vibrant, fun culture. If sport is your thing you can join our touch, indoor netball, or football teams. Bootcamps, ski and cycle trips are also on the menu if you want to get involved, and we’ve got a range of social functions throughout the year if they take your fancy. We’re a friendly, relaxed team that loves getting stuck into great projects, with plenty of fun and good times along the way. Job requirements: Ideally, you’ll have 5 or more years of seismic design experience. Our engineers work closely with our clients and other partners, so you’ll have excellent communication skills, be creative and solutions focused.If you want to join our team please send your CV to careers@holmesgroup.com. If you’d like more information, please email or call, Sophie Burbery (Recruitment Consultant, Holmes Consulting) - sophieb@holmesgroup.com, +64 21 383 429.

EstructureJob Title: Project EngineerJob Description: Estructure would like to add a great engineer to our hard-working, client-focused, fun-loving, highly skilled and enthusiastic team. We are a boutique firm providing structural engineering design, evaluation and peer review services to a wide range of institutional clients. We provide comprehensive design services that go far beyond primary structure and focus on protection of nonstructural components for enhanced post-earthquake recovery.Job Requirements:Our ideal candidate has at least four years of design office experience, a Master’s degree in structural engineering, and is licensed in California. S/he enjoys being part of a team that supports one another, is committed to learning, desires mentorship and enjoys mentoring, is an excellent communicator, and brings a positive outlook and warm spirit to the team. Flexibility is key as we work on a very broad range of often fast-paced projects. This is an opportunity to join a thriving design practice and become part of a very special team of engineers.Send resume and cover letter to Maryann Phipps at mphipps@estruc.com

Nabih Youssef – Structural Engineers

Job Title: Structural EngineerJob Description: Nabih Youssef is a mid-sized structural firm with offices in San Francisco, Los Angeles and Irvine, with a practice focused on providing quality, innovative structural solutions. We are currently engaged in a number of large-scale, exciting projects throughout California, including base isolated facilities, high rise buildings, stadiums and large mixed-use developments. We currently have immediate openings in all offices.We are looking for bright, energetic engineers to join our growing team in San Francisco and Los Angeles. We are currently hiring Designers, Project Engineers and Project Managers, as well as Revit Coordinators. We offer a very significant compensation and benefits packages for qualified candidates.Job Requirements: 2-15 years of experience, specializing in seismic analysis and designDemonstrated experience on technically challenging projectsM.S. in Structural EngineeringP.E. (S.E. preferred)Experience using ETABS, SAP, PERFORM, SAFE and RAMExcellent written and verbal communication skillsAbility to work collaboratively on a teamSend resume to info@nyase.com

HDRJob Title: Senior Structural EngineerJob Description: At HDR, we specialize in engineering, architecture, environmental and construction services. While we are most well-known for adding beauty and structure to communities through high-performance buildings and smart infrastructure, we provide much more than that. We create an unshakable foundation for progress because our multidisciplinary teams also include scientists, economists, builders, analysts and artists. That’s why we believe diversity is our greatest strength. HDR is proud to be an equal opportunity workplace and an affirmative action employer. We believe that the way we work can add meaning and value to the world. That ideas inspire positive change. That coloring outside the lines can illuminate fresh perspectives. And that small details yield important realizations. Above all, we believe that collaboration is the best way forward.Primary ResponsibilitiesIn the role of Senior Structural

- 10 -

Engineer, we’ll count on you to:Supervise or conduct structural analyses, evaluations and designs; develop design options or recommendations; assist with preparation of contract documents including drawings, specifications, and design documentation; assist with or prepare cost estimates; assist with conducting formal inspections and preparing other documentation including critical reports for hydraulic structure projects (dams, spillways, outlet works, navigation locks, diversion structures, flood protection structures, etc.). Perform engineering assignments that may require critical thinking and creativity to address unique structural elements that have limited or no specific code based guidance. Work independently as project manager and provide oversight and mentorship of project and junior staff. This role may include leadership and expansion of HDR’s structural engineering services including client and strategic project development with Federal and State government agencies, water agencies and utilities, and power utilities. Perform other duties as needed.

Job Requirements:Required QualificationsBachelor’s degree in Civil or Structural EngineeringRequires a minimum of 10 years experience in structural and seismic analyses, with a minimum of 7 years finite element modeling.PE or SEMicrosoft Office, AutoCAD, RAM, ETABS, Mathcad preferred, SAP2000, SAFE or similar analytical software, advanced finite element software (LS-DYNA, ADINA, Abaqus)Must possess strong interpersonal, speaking, and writing skills and an attitude and commitment to being an active participant of our employee-owned culture is a must.Why HDRAt HDR, we know work isn’t only about who you work for; it’s also about what you do and how you do it. Led by the strength of our values and a culture shaped by employee ownership, we network with each other, build on each other’s contributions, and collaborate together to make great things possible. When you join HDR, we give you license to do the same. We help you take charge of your career, giving you multiple growth opportunities along the way.

Candy Millercandace.miller@hdrinc.com

SOHA Engineers Job Title: Project EngineerJob Description: SOHA Engineers is a mid-sized structural engineering firm located in South Beach of San Francisco, specializing in structural and seismic design of commercial, government, transportation, and institutional facilities for both private and public clients.

The Project Engineer will perform structural analysis and design of building structures, prepare construction documents including structural detailing and coordination with other disciplines, provide construction administration services, attend meetings and site visits.

Job Requirements: The Project Engineer will have at least 2 - 4 years experience in structural/seismic design of buildings and structures, PE or SE license, good technical, verbal and written communication skills, able to work fairly independently, team player with interest in working in a collaborative and technically challenging environment.

employment@soha.com

catena consulting engineers Job Title: Design EngineerJob Description: catena consulting engineers provides the personal environment of a small firm while providing the opportunity to work on a variety of projects. Our projects vary in size from a single day’s effort to large projects with construction values in excess of $300 million. You will gain design experience in concrete, steel, timber, and masonry buildings and will work on a wide variety of project types including buildings created for healing, learning, living, and interacting.Our culture is embedded in learning and applying our expertise to projects that require creative structural engineering. You will work closely with Principals who are fully engaged in projects and provide daily mentorship. Our open office environment provides an atmosphere that fosters teamwork, impromptu learning sessions, and optimum communication. We have an experienced staff and constantly seek highly qualified engineers. Due to the technical complexity and challenge

of many of our projects, we seek engineers that have earned a Master’s degree, and that have a desire to learn, grow, and be challenged. We require self directed individuals that are interested in being a contributor to a high performance team. Our projects and pace of work is challenging, rewarding, and most importantly, fun.While we have a small firm setting, we offer salary and benefits of a large firm, and then some. Our culture is highly entrepreneurial, and in addition to a salary, we provide incentive bonuses as part of your compensation package. U.S. citizenship is preferred.If you seek the sterile surroundings and isolation provided by cubicle farms, rigid procedures, a highly stratified organization, and repetitive work assignments, catena is not for you.catena consulting engineers is looking for engineers with 0 - 6 years of experience to join our team. We seek highly motivated individuals with a desire to learn and grow professionally. Working on small- or large-scale projects, you will be exposed to a variety of building materials and will experience daily mentorship from firm leaders. Our open office environment provides an atmosphere that fosters teamwork, impromptu learning sessions, and optimum communication. We seek self directed individuals that are interested in being a contributor to a high performance team.catena consulting engineers is looking for engineers with 0 - 6 years of experience to join our team. We seek highly motivated individuals with a desire to learn and grow professionally. Working on small- or large-scale projects, you will be exposed to a variety of building materials and will experience daily mentorship from firm leaders. Our open office environment provides an atmosphere that fosters teamwork, impromptu learning sessions, and optimum communication. We seek self directed individuals that are interested in being a contributor to a high performance team.Job Requirements: M.S. degree in civil or structural engineering0 - 6 years of engineering experienceExcellent verbal and written communication skillsAbility to work within a team and independentlyKnowledge and/ experience with various building materialsDesire to learn, grow, and be challenged

- 11 -

- 12 -

U.S. citizenship is preferredPlease send a resume and cover letter to resumes@catenaengineers.com.catena is an Equal Opportunity Employer/Affirmative Action Employer. catena participates in the E-Verify program.

Rine & Peterson, Inc.Job Title: Engineer; Project EngineerJob Description: Listen. Innovate. Create. More than a philosophy – it’s our way of doing business.

Since 1960, Rinne & Peterson Structural Engineers has fostered a belief in communication, teamwork, and vision. That belief translates to executing highly successful structural and seismic engineering services for challenging projects in a diverse range of markets - commercial, industrial, institutional, high-tech, life science, and residential.

We strongly believe that listening to and understanding our client’s objectives is the starting point to every successful project. We then innovate solutions and create documentation for a final product that is cost effective and meets the client’s needs, thereby adding value to the finished product.

Rinne & Peterson’s staff is what makes all this possible. We are a group of highly talented, educated, and experienced professionals who meet today’s structural and seismic engineering consulting challenges with innovative solutions. Our goal is to be recognized by clients, peers, and employees as an extraordinary company, where employees are proud to provide quality and cost-effective solutions and services. We support a culture of initiative, creativity, teamwork, mutual respect, integrity, and fun. We offer long-term growth potential and encourage and support ongoing professional development. Our team enjoys generous employee benefits, a flexible work week, a great staff, and a very desirable work environment.We are looking for technically savvy thinkers and challenge accepting doers who understand that communicating well is at the very heart of creating and sustaining a successful consulting business. We believe in allocating responsibility based on aptitude and capability rather than just years of experience. We want you to look forward

to sharing your technical skills and insights with colleagues and clients as you collaborate to create value-added designs. We want you to establish and grow your professional relationships with architects, contractors, and other design professionals as you coordinate solutions during design and construction. We want you to continue to learn, develop, and thrive in your chosen profession as you contribute to the continued success of Rinne & Peterson.

Job Requirements:Engineer:- B.S. or M.S. degree in structural engineering- 0–2 years experience with a structural engineering consulting firm- Excellent verbal and written communication skills- Technical skills and knowledge compatible with years of experience

Project Engineer:- B.S. or M.S. degree in structural engineering- PE or SE license in California- 3+ years experience with a structural engineering consulting firm- Excellent verbal and written communication skills- Technical skills and knowledge compatible with years of experience- Design experience with a variety of materials- Experience writing proposals and reports- Experience managing projects and interacting with design team, contractors, and clients

If a career with Rinne & Peterson interests you, then please send us your resume and a cover letter explaining why you would make an excellent addition to our company. HumanRes@rpse.com

Holmes Structures Job Title: Project EngineerJob Description: Holmes Structures is a California structural engineering firm, with offices in Los Angeles and San Francisco. We are part of the New Zealand based Holmes Group, with offices around the Pacific Rim. Compelled by the possibilities, we are relentlessly pursuing Why – to create what is Best. We ask great questions, do great thinking, and deliver beautiful design.

Holmes pushes boundaries. We put no limits on individual potential. Basing rewards and advancement on achievements and entrepreneurship, not just seniority. This also means taking an imaginative and resourceful approach to projects, challenging established convention, and using cutting-edge technologies. If you are a person who pushes the boundaries – in your achievements, interests, and abilities – then we want you as part of our energetic and collaborative teams.We are seeking structural engineers with 5+ years design experience for our San Francisco and Los Angeles offices; M.S. degree in Structural Engineering and PE license are preferred.

Job Requirements: 5+ years working in the field of structural engineering B.S. and/or M.S. in Civil / Structural Engineering Licensed Professional Engineer (PE) in California Seismic design experience or education Coaching/mentoring skills Presentation skills to contribute to team talks, technical sessions and project presentations Computer software skills: Advanced MS Excel, Intermediate ETABS, SAP, Risa (or equivalent) Sound technical skills: understands structural engineering design principles Curious; Helpful; Resourceful; PragmaticSend your resume with cover letter to hr@holmesstructures.com

Peoples Associates Structural EngineersJob Title: Project EngineerJob Description: Peoples Associates Structural Engineers is in its 27th year of structural engineering design and consulting. Last year, we opened a new office in Pleasanton, close to BART

Apply knowledge of structural design and analysis software to assess the accuracy of structural drawings and calculations. Design and analyze building structures. Create and assemble drawings, calculations and submittal packages for clients, ensuring drawings are accurate and complete. Execute designs for residential building structures including steel, concrete and wood structures, and advanced post-tensioned concrete design of data centers. Speak with

- 13 -

clients and other consultants regarding projects, and perform other duties as assigned by project manager. Cooperate and communicate effectively with project manager. Provide guidance and engineering support to assistant engineers or other project participants.

Job Requirements:Master’s degree in Structural Engineering, Civil Engineering or related field; and two (2) years of structural engineering or related experience designing structural systems, developing and analyzing finite element models of civil structural systems, and performing structural analysis, including advanced linear and nonlinear structural analysis.Must have education or experience in:- Structural dynamics- Probabilistic damage analysis (FEMA P58)- Assessing collapse performance (FEMA P695)- Earthquake engineering- Finite element analysis and numerical modeling- Knowledge of mathematical calculations, risk and uncertainty analysis- ABAQUS, OpenSEES, SAP2000 and ETABS.Also requires California Professional Engineer (PE) license.Send resume to: Robert Holland / Re: PE, Peoples Associates Structural Engineers, Inc., 1996 Tarob Court, Milpitas, CA 95035.

KPW Structural Engineers, Inc.Job Title: Project EngineerJob Description: Founded in 2007, KPW has experienced steady growth to reach our current level of 23 employees. From our scenic waterfront office location in Oakland’s vibrant Jack London Square district, our employees work on challenging projects in the academic, commercial, healthcare, high-tech, life sciences, retail, and residential markets. KPW encourages strong professional and career development while maintaining a healthy work-life balance. We foster a sense of teamwork which is supported through clearly defined and equitable profit sharing, internal training and education programs. Our firm’s size enables us to be big enough to handle large scale projects, while remaining small enough to maintain a relaxed and casual atmosphere that allows ample opportunities for personal interaction with our experienced principals and associates.

KPW is committed to diversity in the workplace and we place particular importance on enthusiastic people who are motivated and dedicated to developing their careers as structural engineering design professionals. Minimum qualifications are a B.S. in Civil or Architectural Engineering. Master’s Degree is preferred for entry-level positions and PE or SE licensure is a plus.Job Requirements:KPW is seeking staff engineers with 0-3 years of experience and licensed project engineers with 3-10 years of experience.

Please send resume and cover letter to Kevin Treat at treat@kpwse.com.