I think you are lucky that this wall failed. Water pressure can be pretty significant, even at only 4' deep. The masonry wall does not appear to have been designed or built properly, but more importantly, if this wall had not failed your exterior walls may well have failed instead, and brought...
I do not remember SE pass rates (overall) being 55%. It seems like it has generally been in the 30's or 40's depending on the year and the test portion. That being said, I agree that there was a huge drop with CBT and that 14% is abysmal.
I have commented previously on this topic, but If the...
I agree that there is some marketing to the fine print, and I am sure there is likely some push-back between the "sales" guys and the "engineering and/or testing" side as to what goes into manuals. I think some of the fine print has to do with the ICC system I alluded to above (testing to an...
For what its worth.. See below from IBC commentary.
I still say letter of the code is non-concurrent. Except for special circumstances or conditions this seems reasonable. However, 5 psf should not be a killer in most cases anyway.
It appears to me the code is pretty explicit that they are non-concurrent based on the snippit above. It may however be a good idea to design for both even if not specifically required by code. Especially in the balloon-framed case mentioned above.
That being said, I think the chances of the...
Based on the wording of that section it sounds like even for walls taller than 42" the 5 psf is a minimum - so non-concurrent as long as "rail" loading controls.
Simpson has been very responsive in the past to my questions (aim them at a "field engineer" for your area). I have been impressed at how much they internally test connectors and fasteners in various applications and they are generally willing to share data with you, even for non-standard...
There are some jack posts with ICC reports. I recommend sticking with those. The ICC versions (often from the same companies) should not be labeled with the "temporary support" language. I do not know that any of the "telescoping" versions are ICC approved though.. Here are a couple I have...
For what its worth, NCEES is in the process of conducting the Professional Activities and Knowledge Study (PAKS) survey. I have not ever participated and am unsure what kind of feedback they are after and/or if testing format is covered. Just thought I would post for other licensed interested...
Generally the factor of allowable shear Wind to Seismic is around 1.4. NDS currently lists both wind and seismic allowable shear capacities, but once upon a time, back when IBC included shear wall values in their tables, only one value was given and there was an allowable increase of 1.4 for wind.
Thanks for the reference ANE91. This is better information than most I have seen.
I have mostly chalked this issue up to the following:
- We are not quite sure how wind suction is applied across multiple layers - It is likely a combination of internal pressure differences, pressure difference...
I agree. In my post above, outside of a caveat for small components that may actually see wind under individual components ex. a single or breached membrane, I was stating that there is no air in or out - which results in a net pressure difference. I think there is an augment that a pressure...
I think there was some decent discussion on there a while back on wind suction and whether it acts on "inside" or "outside" surfaces of a system. It seems to me that I was convinced by a sketch/general statics that all roof suction must be driven by a pressure difference (except maybe for the...
AFPA National Design specification (NDS) would likely be a better source for sill plate capacities. AISC is great for bolt strengths, but not as applicable to sill plate connections where the steel is rarely the limiting factor.
Another source - less for testing problems but for real-world...
I agree with JAE on independent calculations/validation. Also, it may be good to establish early on that any drawings are being completed under your care. These definitions/policies vary from state to state (and are sometimes interpreted a variety of ways - search this forum for several...
Great video, and depending on how easy and accurate this is it to generate, I can see this as a great use of AI.
Aside - The above clip from the video sent off alarm bells though. It sounds like a terrible advertisement for the engineering profession! This is exactly the kind of public...
