Hi to All,
What is a reasonable number of DCP tests to verify compaction of fill soil compacted for a residential slab foundation (approx. 1800 sq ft of slab)? Thanks for your input.
Is there a limiting unbraced length for circular steel pipe in pure bending? (if not, then is the allowable tension and allowable compression the same?)
A Pool Contractor in business for 30 years has used #3 bars at 12" o.c. in 6" thick pool slabs and walls (5' high) in all of his pools. No significant problems with cracking have occurred.
Question 1: does shotcrete and normal concrete have the same requirements regarding temp and shrinkage...
A36 structural steel beam w/ 4 bolt holes (13/16" dia.) at end were misaligned by the fabricator. The holes were drilled approx. 1" offset from the req'd position. Field repair consisted of filling holes w/ e70 weld and redrilling holes in the correct position. Is this repair adequate...
Outside Xmas lights for a theme park do not have a UL listing. Are there other specifications (ANSI, ASTM, etc) that govern the manufacturing of outside lights?
P.S. Power is supplied thru GFCI receptacles.
The basic cracking moment req'ment is a means of ensuring that cracking will occur before flexural strength is reached, and by a large enough margin (1.2Mcr) so that significant deflection will occur to warn that the strength Mn is being approached.
It doesn't matter where the max. flex...
I agree with jdonville first reply.
Although the structure MAY not collapse if you do distribute the DL equally to all 6 frames, the interior frames will deflect more than the exterior frames in order to redistribute the actual loading. This difference in deflections may result in roof leaks...
Are you (and the software co.) using ACI? If so, what article(s) refers to that particular restraint and what does the code commentary say?
While software for complex design is extremely useful and time saving, it is the design engineer's responsibility to ensure that the design is safe (and...
I am trying to develop a preliminary plan for a church facility (i.e. activity center). Specifically, I need to know the number of commodes required by code so that I can minimize the restrooms as much as possible (IBC2000 - I have the structural code - but not the plumbing code).
The total...
It seems that you have an actual problem to analyze beyond just a theoretical curiosity.
If that's the case, I would suggest that for a cantilever, the bending moment causing initial yield of the extreme fibers would be the max moment allowed (i.e. the formation or development of a plastic...
I'm not clear on what you call a "perfectly elastic plastic material".
In my experience, the yield stress is considered the maximum that a steel beam would develop (strain hardening to ultimate failure is ignored).
However, for a steel beam that can safely develop a plastic hinge (remains...
For residential roof trusses, the fabricator often provides the design as well. There have been many cases when a collapse occurred during erection of these type of truss systems. Some (maybe most) fabricators provide literature illustrating specific techniques for laterally bracing these...
I think the authors of the AISC Steel Manual (ASD) could probably write some romantic screen plays. Some of the specs appear pretty graphic...
i.e.
Section F3.2
"For box-type and tubular members that meet..."
