Thank you for your thoughts! The walls are these bricks they have instead of CMU, they're about 6"x9"x18" of solid concrete. I should ask them what exactly the facade is made of, or what kind of plaster it is - I hadn't thought it could simply be that.
I asked for more info on the foundation...
Hello, I'm a structural engineering student working on a small project in Tanzania for a class. We're building a new structure and renovating an older one that has several cracks on the exterior plaster facade. The older structure is 1 story CIP foundation, columns, and ring beam with infill...
Thanks for the responses, I guess as an intern I'm still missing some of the experience to make judgments comfortably but will try my best. Gonna talk to a superior now about how loads transfer into the diaphragm and then to braced frames, perhaps that will shed some light on these matters...
I'm looking at sports facility type structure, it's about 400'x400' and steps in the center from an elevation of 155' to 185'. I've attached a picture of it's profile, which basically extends into the page for 400 feet (some reentrant corners though.)
We're designing the lateral system and I...
Thanks for all the great answers everybody, I appreciate the input. Going to ask them to revise the filter fabric placement and that it shouldn't be below the footing (as you say Thaidavid, this could be more for their benefit than ours,) and I'll let them take it from there.
Structural...
Ah, I just read somewhere that the filter fabric should surround the gravel because otherwise water will mix with the soil and fill the spaces between the gravel. This makes sense right?
Structural Engineering Intern
So in the original images, you would only agree with fabric being placed where the light green line is?
I'm not sure what the purpose is but the website I provided shows fabric all around the granular fill, even between the fill and natural soil. So you wouldn't agree with these images?
I've...
This website seems to confirm my thoughts, all the filter fabrics are shown surrounding pipes and gravel but not being placed below footings: http://www.apexhomeinspections.biz/articles/foundation_drainage.pdf anybody know why this is the case though?
Structural Engineering Intern
Should filter fabric be allowed to extend underneath the footing as shown in the first image (pink)? I feel like I would want to prevent that for some reason. So the second and third images show my own guesses. Although I'm not sure why; bearing pressure is what's important for a wall footing...
Hi all, I'm having some difficulty figuring out the load path taken by the forces from crane to strut to embed connection. I've attached several drawings to present the situation, it's pretty typical I believe. The crane has 3 struts tying into 2 "shoes" made of several plates welded together...
I don't agree with this; the bending deflections of the tube are going to cause axial deflections in the cables, and I don't think they can be neglected.
Yes I believe so - the first time these cables are used, they unwind a bit and therefore stretch greater than a steel rod of the same properties would, correct?
Ah yes, I was thinking I would let it rotate, but then try to get it not to - but that's not it because although the forces in the...
We reduced the MOE to account for the stretch the new cables will experience, does that make sense? And we figured they wouldn't take much moment anyways since they're so thin.
Hm so with that Tee, we'd want to make it remain in that position to ensure equal loading?
Thank you both for the responses. I think we've accepted that this is okay, it's a simple model.
Patswfc, we're not` worried about the tube displacement; it's an HSS20x12x.375 welded to an HSS12x12.375, 108' long with max distance between cables something like 27' and it's only deflecting 2.5"...
I was wondering if anybody else has encountered this, or if my results seem valid. I'm designing a canopy lift, basically a long HSS tube that's going to be picked up and moved. In SAP2000 I modeled the tube and the cables that will be lifting it; for the cables I modeled wire rope as a steel...
