What is a Structural Engineer?

by Engineer Designer on July 8, 2010

I think most folks have a pretty good idea of and an appreciation for what Structural Engineers do. Basically, we keep things standing. We make sure that the buildings and the homes that folks use will remain in the form intended. The field extends beyond buildings. Watch the wings flex upward as your airliner leaves the runway. Most folks give it nary a thought as the wing deforms, by design, into the shape that will carry you and your travel brethren through the halls of air. It is one of those things we tend to take for granted. I do - and I am one ("I are one" as the old poem goes). I crawl into the roller coaster and give not a thought to the possibility that the thing might fail. I mount the free standing stairs, or venture out over that glass overhang at the Grand Canyon, or the Golden Gate in San Francisco, the last thing on my mind is that it could fail. Well, not exactly. I do have the faith but as an Engineer myself I must admit that I always look at the structure and try to figure out how they did it, what the likely problems were that were solved, and marvel. Structural Engineers create drawings and specifications, perform calculations, review the work of other engineers, write reports and evaluations, and observe construction sites.  They have a uniquely significant responsibility for protecting the public relative to the other design disciplines since so many safety issues ride upon their decisions. Structural engineers must ensure their designs satisfy given design criteria, predicated on safety. The theories of Structural engineering are based upon physical laws and empirical knowledge of the structural performance of different types of materials. Knowledge and performance in the field depends upon a detailed knowledge of loads, physics and materials to understand and predict how structures support and resist self-weight and imposed loads.  It depends on the knowledge of materials and their properties, in order to understand how different materials support and resist loads. A structural engineer will typically have a four or five year undergraduate degree, followed by a minimum of three years of professional practice before being considered fully qualified.  Many students who later become structural engineers major in civil, mechanical, or aerospace engineering degree programs, with emphasis in structural engineering.  My own field of study was Engineering Science and Mechanics - which was in the aerospace department Structural engineers are licensed or accredited by different societies and regulatory bodies around the world.  Usually, just prior to or shortly after completing their bachelor’s degrees, engineering majors take an exam that, once passed, affords the test taker the designation of engineer-in-training (E.I.T.). To eventually obtain the PE designation (Professional Engineer) one must obtain a passing score on the NCEES Fundamentals of Engineering exam plus a passing score on 16 hours of structural engineering licensure examinations. Structural engineering specialties for buildings include:
  • Earthquake engineering
  • Façade engineering
  • Fire engineering
  • Roof engineering
  • Tower engineering
  • Wind engineering
In one form or another the field has existed since humans first started to construct their own structures dating back to to 2700 BC when the step pyramid for Pharaoh Djoser was built by Imhotep, the first engineer in history known by name.  If one looks at many of the ancient buildings, like St, Peter's Cathedral in Rome, it becomes obvious that there was quite a bit of engineering know-how in those days. I've personally marveled at the dome and  wondered how I would have solved the problems it posed to the builders of the time. The above is mostly the technical side of structural engineering. Additionally, these can be combined with skills in architectural design and construction to achieve an excellent and valuable balance in a professional. The profession is in demand in many areas where a PE seal is required on documents to obtain permits. Some folks are surprised that they need a sealed drawing just to permit a simple backyard shed. All of us rely on engineers. It is a profession well worth considering if you are considering building a career. Like all other professions, it is not difficult, as long as one can confront the basic sciences and make sure he or she never passes a word that is misunderstood. Doing so is generally the first step towards failing at a subject. Folks I have helped in mathematics were not stupid, they had just been looking the other way when a basic concept was taught and missing that link they lost out and concluded that mathematics is difficult. Is is not - if one does not skip. If you are looking do get into the profession, contact your state Engineering Society. They will be complete delighted to fill you in on the requirements and point you in the direction of a great and fulfilling field. If you need specific advice, feel free to contact me.
Structural engineers must ensure their designs satisfy given design criteria, predicated on safety (e.  Structural engineering theory is based upon physical laws and empirical knowledge of the structural performance of different landscapes and materials.  Structural engineering has existed since humans first started to construct their own structures.  Structural engineers are licensed or accredited by different learned societies and regulatory bodies around the world (for example, the Institution of Structural Engineers in the UK)[3].  Structural engineering dates back to 2700 BC when the step pyramid for Pharaoh Djoser was built by Imhotep, the first engineer in history known by name.  Structural engineering specialties for buildings include:Earthquake engineeringFaçade engineeringFire engineeringRoof engineeringTower engineeringWind engineering[edit] Earthquake engineering structuresMain article: Earthquake engineering structures.  Structural engineering depends upon a detailed knowledge of loads, physics and materials to understand and predict how structures support and resist self-weight and imposed loads.  Structural engineering depends on the knowledge of materials and their properties, in order to understand how different materials support and resist loads.  Structural Engineers create drawings and specifications, perform calculations, review the work of other engineers, write reports and evaluations, and observe construction sites.  Structural engineers have a uniquely significant responsibility for protecting the public relative to the other design disciplines.
Structural
Structural engineers must ensure their designs satisfy given design criteria, predicated on safety (e.
Construction
Construction is a dangerous pastime, and builders sometimes take undue risks in order to save time or money.  Construction experience and report writing skills are essential.
Degree
A structural engineer will typically have a four or five year undergraduate degree, followed by a minimum of three years of professional practice before being considered fully qualified.  Many students who later become structural engineers major in civil, mechanical, or aerospace engineering degree programs, with emphasis in structural engineering.  Usually, just prior to or shortly after completing their bachelor’s degrees,engineering majors take an exam that, once passed, affords the test taker the designation ofengineer-in-training.  A passing score on the NCEES Fundamentals of Engineering examPassing scores on 16 hours of structural engineering licensure examinations consisting of one of the following: NCEES structural exams, 8 hours of which are the Structural II examA 16-hour, state-written structural exam taken prior to 2004The NCEES Structural II exam plus an 8-hour state-written examFour years' acceptable structural engineering experience completed after earning a bachelor's degree A maximum of 1 year of credit may be awarded for graduate engineering degrees that include at least 6 semester (9 quarter) hours of structural engineering.

Creativity and “Tectonics”

by Engineer Designer on July 6, 2010

All of us have it. It is a human trait. In my opinion it is too often reduced in importance by folks who insist that everything is simply a rearrangement of what we have already seen. In my opinion this is completely untrue. If it were the case then one would have to ask the question, "Where did it start?". If all creation is simply the result of what we've seen, then was what we see created? If that was also the rearrangement of preexisting data then the question would continue right on back and actually become a bit ridiculous. In my opinion all of us create. We create uniquely. It gives us the greatest joy of our lives. Regardless of the creation - as long as it is ethical, it feels good and is good. I am fortunate to be in a field where creation is part of the package. An engineer and designer considers creation his or her stock in trade. As I have said in other articles, if you are lucky enough to do something which causes the clock to spin (meaning that you loose the sense of time - and actually forget that time is passing) then you're a lucky person. I've dabbled at many things - one is animation. In 2008 I decided to make a little animation, right after the Summer Olympics of that year, defining the term "tectonics". Most folks know the mostly commonly used meaning which is a geological term describing the movement of large plates along the surface of the earth. However look the word up and you will see that it has an entirely different meaning as well. Likely the meaning I am talking about is a more senior meaning from which the geological term derived. Some might think it is corny - but I've included it on this page - upper right. The setting was actually created in my CAD program. The other settings, the stadium, the Greek building and the pyramids were brought in an scaled from Google 3-D. I learned a lot about 3-D while making this animation.
Well – it has happened. The lead paint that we used in building, so many years ago, has now come back to haunt us. It has been the subject of the EPA’s attention for a long time, but now new laws are in place that need to be known and followed by any who are in the renovation or repair business – and this includes owners of such properties.

Renovation, Repair and Painting Rule (RRP)

Common renovation activities like sanding, cutting, and demolition can create hazardous lead dust and chips by disturbing lead-based paint, which can be harmful to adults and children. On March 31, 2008, EPA issued a new rule aimed at protecting children from lead-based paint hazards (79 pp, 847K). The rule requires contractors and construction professionals that work in pre-1978 housing or child-occupied facilities to follow lead-safe work practice standards to reduce potential exposure to dangerous levels of lead for children in places they frequent. To protect against this risk, on April 22, 2008, EPA issued a rule requiring the use of lead-safe practices and other actions aimed at preventing lead poisoning. Under the rule, beginning April 22, 2010, contractors performing renovation, repair and painting projects that disturb lead-based paint in homes, child care facilities, and schools built before 1978 must be certified and must follow specific work practices to prevent lead contamination.

This also affects Property Owners

Property owners who engage in renovating, repairing, or preparing surfaces for painting in pre-1978 rental housing or in space rented by child-care facilities must, before beginning work, provide tenants with a copy of EPA's lead hazard information pamphlet Renovate Right: Important Lead Hazard Information for Families, Child Care Providers, and Schools (PDF) (11 pp, 1.1MB). en español (PDF) (20 pp, 3.2MB). It is the responsibility of the owners of rental properties to document compliance with this requirement; here is a sample of EPA's  pre-renovation disclosure form (PDF) (1 pp, 53K) which can be used to fulfill this requirement. More importantly, after April 22, 2010 (THAT IS NOW FOLKS!) property owners who are going to perform any of the aforementioned actions in any rental housing built before 1978 rental housing or in any space rented by child-care facilities must be certified and must follow the lead-safe work practices required by EPA's Renovation, Repair and Remodeling (RRP) rule. So this does not only apply the Contractors. If you are an owner, doing your own work, you need to be aware of an comply with these fules. As I understand it, a property owner can become certified using the application for firm certification (PDF) (9 pp, 642K) plus (of course) a fee payment to EPA. The Agency has up to 90 days after receiving a complete request for certification to approve or disapprove the application. Property owners who perform renovation, repairs, and painting jobs themselves (and in today’s economy more and more owners are doing their own repairs) should also consider:
  • doing some training on how to work with lead paint safely.
  • Maintain records of what you are doing (to cover yourselves). You want to show that you and your helpers have been properly trained and are doing what you need to do. Here is a  sample recordkeeping checklist (PDF) that might help. It was developed for the contractors but is great for owners as well.
  • And ready a few other guides (Read about how to comply with EPA's rules  Guide 1 and Guide 2
Of course when you get your training you will become familiar with all the important issues. Bottom line, this is might important to know. Ignoring the new rules can lead to fines of up to $37,500 per day!!! I am facing, as are all Certified Contractors, my continuing education requirements in the upcoming month or two. I need to do this one. Though as the Engineer Designer I don’t need to worry about this (even when I design for older buildings), I want to make sure my contractors and owners know about it. I also have a Daycare center (an older building) and I need to make sure that our managers know about this Oh my gosh – I just remembered that I was the contractor for the renovation of a pre-1950’s in Central Florida within the last couple of years. I better get cracking. Hope this article helps.