Hi RalphNater,
I have a few thoughts comments:
-I wouldn't believe just pushing the bottom chord member back in place and gluing/screwing would really bring the member back to its original strength. Their is a lot of shear flow cal's to run and generally I haven't been successful doing...
Hello,
I am reviewing an existing roof structure for the installation of solar panels. I have the original design drawings from the pre-engineered timber roof truss designer. I have completed by own model of the truss system and have comparable results. Then I adjusted my model for the revised...
I feel like this would have a lot to do with your contract and working relationship with the contractor. Generally, when I'm writing a proposal I like to say "one time shop drawing review". Normally I don't make an issue of reviewing shop drawings twice, but if its obvious the contractor is...
Excel sheets will save you lots of time once they are developed. I would also recommend developing them yourself so you truly know how they work. Generally, I develop excel sheets for simple time consuming tasks, it might take a while the first time, but will save you greatly in the long run...
I currently work for a multi-disciplinary consulting company and primarily complete the structural design of industrial building, equipment supports and marine structures (I.e wharfs, breakwaters).
I have been offered a Project Manager position with a public agency, with the department primary...
I agree with KootK, with a previous employer we use RISA and I think its a great program. RISA is powerful and easy to learn and use. Now we use SFrame and Lusas with Lusas being pretty expensive. SFrame is simple and would likely be cost effective although I find it hard to navigate in when...
Our structural engineering department has a "field guy" who checks most of the shop drawings and completes the site inspections. He has about 10 years of experience, when he started he did mostly drafting and still does drafting when not reviewing shop drawings or field inspections. Generally he...
Generally speaking in "Style A" the welds are experiencing tension (caused by bending) and shear. the tension force is large because the moment arm causing tension/compression is small (basically the upper pipe dia.). In "Style B" the welds are in shear only. The bending is now taken as shear on...
With regards to waterproofing steel sheet pile wall it is pretty common practice in Atlantic Canada for large excavations. They use some type of gasket between the sheets as they are being driven. Most steel sheet pile suppliers also offer a buy back program where they will purchased the second...
National Building Code of Canada (NBCC) 2015. Clause 4.1.6.14 - Snow removal by mechanical, thermal, manual or other means shall not be used as a rationale to reduce snow loads. So if your in Canada its pretty clear.
If your floor joists are simply supported and your slab is one way, I find it almost impossible to believe the deflection isn't maximum in the middle. Even with splice plates at the quarter points the slab can't deflect back up after the splice.
Was the survey completed on the finished...
Commentary L – Application of NBC Part 4 of Division B for the Structural Evaluation and Upgrading of Existing Buildings.
I’m wondering how many other Structural Engineers use this section when looking at older buildings. It’s been bouncing around the office lately, with regards to what extend...
If I understand correctly a "pour-Strip" is the area you leave out of the slab to allow for excavation down to the strip footing. You place the tilt-up panel directly on the strip footing and backfill. This creates your foundation wall and provides frost cover.
I previously worked for a...
I have downloaded the attached document, thanks a lot. I also have the ASCE 10-15 standard.
I have one final question,the contractor wishes to use ASTM A252 grade 3 pipe for the poles (it's locally available, Fy=310 mPa, Fu=455 mPa). This grade of material is not specifically mentioned in ASCE...
I have been tasked with designing a mono-pole structure. The base tube is approximately 1000 mm DIA. and 13 mm plate. I am wondering if anyone has any good references for the design. I have modeled the structure and feel confident with the loading. I’m looking for references on the capacity of...
If you have a rock which weighs 5 pounds, the "dead weight" is 5 pounds. If you have a rock which weights 5 pounds with 2 pounds of snow on top, the "dead weight" of the rock is still 5 pounds. Dead weight or as its often refereed to as "deal load" or "self-weight" is simply the objects own...
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"The corner post leg members are usually done as beam elements with the lacing members and redundant members as truss elements."
Transmissiontowers,
When you mention the above statement, does this mean that you generally neglect bending forces caused by wind/ice in your secondary...
