Agreed that just about any complex roof can be solved with prefabricated trusses provided the ceiling plane is flat. But I think it’s implicit in the OP that flat ceilings are not the case here, hence the questions about concentrated loads and concern over their magnitude.
If I’m an architect...
A valley member will have vertical reactions that need to be resolved, and these reactions can be quite large. It’s just a function of the geometry of the roof and the load being collected at these points.
A hip, on the other hand, does not need discrete vertical supports as long as it is...
So if a SOG doesn’t perform properly, say in the form of joint displacement or excessive cracking that ends up being detrimental to the operations / function of the building space, who is responsible for that? The fiber manufacturer? The architect? Do they know that they are expected to take...
Really good question that I’d like to expand upon.
Is it really feasible to delegate the design of the entire slab to a third party? I can see it more clearly with discrete components like prefabricated wood trusses or cold-formed steel “infill” framing, but it’s not as obvious to me how the...
The code requires us to design for a multitude of different scenarios comprised of simultaneous loadings and load effects. The likelihood that some of these scenarios ever actually occur is immeasurably small.
Perception be damned, as structural engineers this is the standard of care we are...
We use structural mesh quite a bit, actually. Mostly with the tilt-up walls and industrial slabs we design, but we also allow it in foundations and elevated slabs.
It’s more for the contractor than anything else given it can help speed up their placement operation.
Simplest approach for us...
The author of the article appears to be incorrect here.
ACI 318 does recognize bond between concrete and welded plain wire reinforcement, achieved via bearing and shear strength that develops at the welded crosswire intersections given that the smooth surfaces of the wires needing to be...
Did you try typing in "how does concrete harden" as a Google search or perhaps checking out something like YouTube?
I would recommend exhausting the rudimentary resources that are available to you and putting in a bit of your own research time. You'll be better (and more knowledgeable) for it.
I do think there is some merit to using WWR for the purpose of easing "in house" detailing as you've noted. From what I've experienced, the detailing still gets done, but it's handled by the fabricator's WWR detailer in the form of a submittal that the engineer would review for design...
WWR mats are commonly produced using 80 ksi material, and using wire sizes up to and including a D31.0 (deformed wire with steel area = 0.310 in2). I know of several wire producers who appear to operate comfortably in both cast-in-place and precast concrete markets where the larger diameter...
Conspiracy. Corruption.
Potayto. Potahto.
I'm simply saying that, with regards to some of the discourse on this thread, the sensationalism is shape-shifting.
Originally it was talk of rolls of tar paper on the roof being the smoking gun for pool deck collapse. And now that folks seem to...
Were sites at the collapse of structures like the WTC, Murrah Building, Minnesota I-35 bridge, and FIU bridge open to numerous investigative entities?
I feel like these events and others like them have always been the "tip of the spear" jurisdiction of agencies like NIST and NTSB, with...
Myself and others have postulated this same general theory, and have presented it across several posts that can be found in the first few threads of this topic:
-questionable design and execution of a highly-sensitive structural system (two-way flat slab susceptible to a punching shear...
