Thank you BAretired. The top flange of the existing W16 is braced laterally at 5' on center by W8 beams that frame in from both sides.
The bottom W8 (new "cover plate") would be stitch welded on both sides to the bottom of the existing W16.
Does that answer your question?
Thank you.
Thank you for your thoughts so far, I really appreciate it.
I am attaching a sketch since I didn't describe the situation very well.
https://files.engineering.com/getfile.aspx?folder=e8d1d49b-ee57-4b71-9bf0-7dbf8c308715&file=ConceptSketch-CamberedW8.JPG
Hello,
I have a situation where I need to install bottom cover plates on steel beams over an area where it would be extremely difficult/expensive to install shoring under the beams. The undersides of the ends of the beam are accessible, but not the main 30-ft span.
My understanding is that it...
Hello and forgive me for what you may consider a silly post...
My work requires that sometimes I need to evaluate existing structures. I have done that with many different material types.
With open web joists, there is almost always a metal tag somewhere on the joist that tells the manufacturer...
I have a little more information now - the owner was able to find some shop drawings of the clarifier mechanism.
The clarifier was rehabilitated in 2006. Only the old machine itself was saved and re-used. Everything else (center vertical truss, horizontal rake arms, sludge plows, center well...
Wondering if any of you have specified HDPE or PVC sheet material for a v-notch weir in a wastewater clarifier. I have almost always seen steel or aluminum or fiberglass in the field, but I would think that HDPE or PVC would be cheaper and more resistant chemically. I know there are issues...
Hello,
I am investigating a very old clarifier mechanism in a gravity thickener tank. The unit was probably built in the 1970's. There are no shop drawings or records of construction. The mechanism is basically welded steel trusses made from small carbon steel angles, 1/4 inch thick. There...
For decades, the standard rule of thumb on a concrete block foundation has been 3 to 5 times the weight of the machine.
I have never really seen it clearly stated as an assumption, but I have always assumed that the underlying assumption is that this is valid when the equipment is solidly...
To the issue of relative conservatism of new codes vs. older codes: I believe ACI 350-06 is significantly less conservative (at least for rectangular tank wall design) than the old 350-01. And 350-01 was easier to understand. For what that's worth...
Codes get thicker (but not necessarily...
Jacst3,
Thank you for your response. If you are still in the mood, I'd like to discuss further... (anyone else out there looking at this, I'd appreciate a reply from you also)
I posted four scenarios, and I don't know which one of these you are remarking about with your 2nd, 3rd and 4th...
Thanks for starting this post Jacst3.
I've been struggling with this also.
I ran some hypothetical cases, and achieved the following results. If anyone can affirm or contest these results, I'd be glad to hear it:
All my cases use a retained liquid of 63 pcf, 21' deep.
All are for a pure...
I thank you kindly for your responses thus far.
I am particularly interested to know your opinion about my use of the "125% of Fy" idea, and the concept of trying to achieve a kind of equivalence with ACI 318-05, 12.14.3.2. No one has commented on that yet. Some of you have said that you...
I am curious as to what folks in this forum are specifying in regard to this issue. In my own specifications, I require a depth of embedment such that the bar develops 125% of yield strength (ala ACI 318-05, 12.14.3.2). In doing this, I am basically saying that I want the same kind of...
