During the February 2014 SE University Session, Kim Olson discussed gapped and overlapped truss connections. She talked about the “Hidden Toe” partial overlap condition, and welding requirements for the hidden toe. Kim noted that welding of the hidden toe is not required if the components normal to the chord differ by 20% or less, and a question was posed by an attendee wanting to know what comparison should be made to evaluate the 20% difference.
Kim explained that the comparison is between the components of the branch forces normal to the chord member. This is also explained in two Modern Steel Construction articles linked below.
Overlapped connections were discussed in the “shop and field issues” column Special Treatment, written by Tom Schlafly, Director of Research at AISC, in the March 2008 issue of Modern Steel Construction (MSC). In the June 2010 issue of MSC, a question about whether the hidden toe should always be fully welded was posed as part of the Steel Quiz (see Question 4). In the answer, it states “[full] welding is only required if the normal components of the two branch forces differ by more than 20%.”
We hope that you find this information helpful. If you have any questions you would like to see answered, please leave us a comment below.
SE Solutions is excited to be assisting AISC with its event for structural engineering students at the North American Steel Construction Conference (NASCC) for the 4th year in a row. The Students Connecting with Industry Sessions (SCIS) begins with several speakers in the morning talking about student specific issues, followed by lunch and an exhibit hall tour. The afternoon features an opportunity for students to meet one-on-one with 40 great companies involved in all different aspects of structural engineering as part of the Direct Connect networking session.
With this year’s event being in Toronto, students from both the US and Canada will be attending. Student members of AISC and CISC can attend NASCC and SCIS for no charge, and in addition, the education foundations of both AISC and CISC are offering travel reimbursements up to $175 per student. For more information on the event, please see www.aisc.org/scis.
Brian Quinn and Lisa Willard from SE Solutions will be attending NASCC April 26 – 28. If you will be attending, we hope to see you there!
23 Feb / 2014
Lessons From Matthew Kelly’s Book – “Off Balance…”
“So what is it that people need and want? People need and want a satisfying experience of life. Over the past three years I have asked more than ten thousand respondents, ‘If you had to choose between balance and satisfaction, which would you choose?’ Not a single respondent chose balance over satisfaction. People want to live deeply satisfying lives both personally and professionally.”
The above quote is taken from Matthew Kelly’s book, “Off Balance, Getting Beyond the Work-Life Balance Myth to Personal and Professional Satisfaction.” I re-read this book on a recent trip and found it to have multiple thought-provoking ideas and suggestions. In the book, Matthew takes a closer look at the “Work-Life Balance” discussion, and relates it back to specific steps you can take to explore this balance in your own life.
In my experience, structural engineering is a very challenging profession on multiple fronts. There is the stress of knowing that designs for structures must keep people safe, and that any mistakes could have life safety impacts. In addition, the ever present threat of lawsuits always lingers, along with constant pressures to work faster and meet compressed schedules. Therefore, having a good system to deal with the pressures of work while creating a fulfilling life is critical.
In his book, Matthew Kelly outlines a helpful “process” for increasing your personal and professional satisfaction level (as engineers, we tend to like “processes”). There are five facets to this process:
- Core Habits
- Weekly Strategy Session
- Quarterly Review
I definitely recommend this book, and have incorporated many of its suggestions into my own life. The book is only 137 pages and is an “easy read” to fit into a hectic schedule. It’s available on Amazon for about $17, or $15 for the Kindle edition. Why not invest less than $20 to help improve your life?
Have a Magnificent March!
28 Jan / 2014
Tips for Concrete Design
If you are designing a building with concrete beams and columns, how do you determine a starting member size, or the amount of reinforcement required? While many engineers will use a spreadsheet or computer program for the final design, what simplified methods can be used to arrive at a preliminary design for a beam or column?
In an article in the April 2013 issue of Structure Magazine, Jerod Johnson, PhD, SE, from Reaveley Engineers + Associates in Salt Lake City, Utah, writes about Simplified Methods in Reinforced Concrete Design, and discusses not only what these simplified methods are, but also shows how these approximate methods relate to a more rigorous analysis.
Included in this article are tips for determining initial sizes for beams based on span-to-depth ratios, calculating an initial required area of steel for beams, and developing an interaction curve for columns based on two points.
Do you use other simplified methods or “rules of thumb” for concrete design? Share your favorite tip in the comments below!
“Think about what really makes you smile… Ask yourself what you would do if you didn’t need the money. Ask yourself what really excites you. And what would inspire you to keep going long after most people would quit. Find those answers and therein lies your dream. We all have our own personal Everest, and if we follow its calling, that is when life truly becomes an adventure.”
This quote is taken from Chapter 1 of Bear Grylls’ book “A Survival Guide for Life: How to Achieve your Goals, Thrive in Adversity, and Grow in Character.” My 13 year old daughter loves reading survival books and has built a multitude of forts in the woods across from our house, and now she has me watching Bear Gryll’s shows and reading his books. I highly recommend this book. I think one of the biggest challenges in life is finding how to make a living out of doing something associated with your passion. Bear Grylls’ book is great reading and will help you pick up many tips for improving your life.
As a niche recruiting company focusing on the structural engineering industry, one of our primary goals is to help people find career opportunities that will allow them to be passionate about their work and improve their lives. Check out the Hot Jobs portion of our website for some of the opportunities we currently have available. We will also be unveiling a new website soon to better serve you.
Have a great February!
30 Dec / 2013
Tips for Getting More Done in 2014
Have you subscribed yet to the free emails from Craig Jarrow, author of TimeManagementNinja.com? If not, you owe it to yourself to do it NOW! Craig does a wonderful job of posting useful information that can help you in many areas of your life, both professionally as well as personally.
Here are a few of his top posts for 2013…
– 21 Ways to Define a Positive Attitude
– 29 Ways You’re Wasting Time Today
– 6 Ways to Empty Your Head and Get to Bed
– 10 Big Differences Between Goals and Dreams
– 12 Apps I Use Every Day to Be Productive
If you have already subscribed to this and have found it beneficial, please let me know.
Have a Wonderful and SAFE Holiday Season!
In performing engineering calculations, there are often times when you have to interpolate between values to get an answer to use in an equation. We know that similar triangles can be used to find that intermediate value, but how can we automate the process?
In Excel, the Trend function works well when you are trying to identify a number along a straight line. As long as you have your known X and Y values, and the new X value, you can easily determine the new Y value.
The format for the Trend Function is: =TREND(Known_y’s,Known_x’s,New_x)
As an example, when determining the seismic base shear, the Fa value must be calculated. This value is found through Table 1613.3.3(1) in IBC 2012, and is based on the site category, along with the Short Period Acceleration. If your Acceleration does not match one of the table values, then you need to interpolate between the adjacent values in order to determine Fa. The Trend function can be used to do this directly by using the Ss values bounding the actual value, and the corresponding bounding Fa values based on the Site Class.
he formula as written in cell C5 is: =TREND(G5:H5,G4:H4,C3)
21 Oct / 2013
SE Solutions Provides Scholarships to 2 MSCE (Structures) Students from Purdue University.
SE Solutions was pleased to recently present scholarships to two Purdue MSCE-Structures students to help defray the cost of their education. Joseph (Joey) Jones, EIT and Raymond (Ray) Chou, EIT were the recipients of the awards. This is the second year that SE Solutions has offered the scholarships.
Purdue University MSCE Students and Scholarship Winners Joey Jones (left) and Ray Chou (middle), with SE Solutions, LLC President Brian Quinn
Ray received his BSCE from Purdue and will be finishing his MSCE this December (2013). He is interested in finding a position in structural engineering in the Midwest after graduating. Ray is from New London, Missouri. For additional background on Ray, please see his Linkedin profile athttp://www.linkedin.com/pub/raymond-chou/83/a23/311.
Joey received his BSCE from the University of Washington and will be finishing his MSCE this December (2013). He is interested in finding a position in structural engineering in the Northwest after graduating. Joey is from Ellensburg, Washington. For additional background on Joey, please see his Linkedin profile athttp://www.linkedin.com/pub/joseph-jones/68/450/176.
The rising costs of education and the decrease in funding available through teaching and research assistantships has made it increasingly challenging for students to afford higher education and advanced degrees. SE Solutions is happy to contribute in a small way to help Ray and Joey meet their educational goals, and we look forward to seeing them enhance the structural engineering profession.
SE Solutions hopes to continue providing scholarships to structural engineering students in the future.
30 Sep / 2013
“I shall pass this way but once…”
As I was trying to decide what to discuss for this month’s article, I thought a short quote I have posted in my office would be appropriate. This comes from Dale Carnegie’s book, “How to Win Friends and Influence People.” Dale said he cut this saying out and pasted it on his mirror where he would see it every day. (The author of the quote is not listed.)
“I shall pass this way but once; any good, therefore, that I can do or any kindness that I can show to any human being, let me do it now. Let me not defer nor neglect it, for I shall not pass this way again.”
This is a fairly easy saying to “agree” with, but yet another thing to live it out every day. However, I think pasting it to a mirror or having it somewhere visible where you can see it at the beginning of each day and reflect on it at the end of the day is helpful.
As always, if there is any way we can assist you, please don’t hesitate to contact us.
Best wishes to everyone for a healthy and happy October!