I have a partial set of drawings for a concrete structure dated 1904. Within the main structure is a cast-in-place concrete pipe (84" inner diameter), the pipe thickness is relatively consistent at top, however the bottom half has a varying thickness such that the outside face is essentially...
To expand on the statement that "concrete cracks" and the comments about proper mix, placement, etc the general intent is to make the concrete crack where we want it to, and to control that crack size. Thus the term control joint being used by many. One question that has not been asked, on the...
JStephen- Here is the link that someone provided to me (I have not fully used it). I have mainly been working from a pdf copy that was also forwarded to me...
New OSHA handrail/guardrail requirements have come into effect on Jan 17 of this year. Quoting from the new text (note all is from the same section/page):
"The height of stair rail systems installed on or after January 17 2017 (must be) not less than 42" from the leading edger of the stair...
If a fab shop is AISC certified, I do not see where a visit to meet Special Inspection (SI) would be required. Just supply the paper work. The AISC certification would apply to all work completed within their shop; welding or bolting. Any steel SI would only be for field work by the...
jayrod12- Thanks. I was able to find what looks like several good resources by searching ASAE/ANSI EP486.
Cabuck67- Unfortunately "rammed aggregate piers" returns results for soil improvement not foundations.
Please see the attached sketch. I am working on a pro-bono project for a local camp grounds for the disabled. They are wanting to replace an existing firewood shed that is in disrepair with a new one. The column spacing is 6'-0" x 7'-9", with the largest column length of ~8'. It is to be...
Can you dig a small pit next to the slab? If the poly is not broken, use this open pit break it. Depending on the size of the slab, maybe do one on each face. You good even introduce a small about of water to create a weak point (start the breakdown). If there is a heave load, hopefully this...
Similar to dcarr, I have always shown the drift loads on my drawings. If you all indicating all the other loads way would you not this. Especially if there are architectural features or you are going against an existing structure that they may know about.
Also, I am not sure if I am reading...
Maybe the 1915 National Building Code. The version I have is updated to be 1924. This is the oldest I have been able to find, it could get you close. It was the best I could find for a similar situation for modifications to an old 4-story Model-A factory that was R-C design. The code can be...
If you have access to all four faces of the column there are products out there that can increase the capacity of the column. One is FibreWrap. I have used them to reinf a column where we were asked to "engineer" it after the contractor placed with no drawings.
My experience, most reviewers understand this. If a newer version has been issued they usually allow the use of the newer; ie ACI 318-14 would be okay even if the state code (via IBC) lists ACI 318-11. Also, since revisions are marked in the newer version, you should be able to tell if the...
We have had this issue on several projects. We requested clarification from AISC and IBC about the infinite loop the codes have caused with their references. Within the request for clarification we clearly defined the conflicts and highlighted the relevant sections. Only to receive a simple...
I cannot reply for anyone else, but every company I have worked for supplies the required information (at least as best as possible). I would be surprised that the drawings could get past permitting without that information.
If you are struggling to tell if it is a greenhouse or hospital...
Unfortunately you might be over-simplifying. The adjacent girts might be of different thickness, especially if one is an end bay. The laps could also verify on the left and right sides of the splices. Every manufacturer will have different thickness, shapes, lap lengthes, and connection...
