See if the attached document helps.http://files.engineering.com/getfile.aspx?folder=23e2fd3c-5d6a-491b-8cde-a72f0f376867&file=Whiting_Crane_Handbook_-_Third_Edition.pdf
According to "Snow Loads on Non-Building Structures" (http://ascelibrary.org/doi/abs/10.1061/9780784412367.129),
the authors state in reference to snow on grating that "balanced snow will accumulate on this surface just as it would on a checkered plate or any other continuous flooring material"...
SgtYui-
I'm curious about the 3:1 chamfered edge on the existing slab. Do you know why it was constructed this way? Is the existing slab part of a building? The way it's reinforced at the edge looks like the slab may be integral with a grade beam.
Section 5.5.3 of the attached document seems to support it. Section 5.5.4 states that if a termination plate is used, it should be small and circular. Keep in the mind the document was written for reciprocating compressors, but I imagine it's useful for most dynamic...
Being 60 years old, it's not likely to be round bar. Possibly square or flat. See attached.http://files.engineering.com/getfile.aspx?folder=911dddcd-356c-43dc-9e0d-28aea95de01f&file=Reinforcing_Bar_Specificaitons_1911_thru_1968.pdf
It depends on the purpose of the stairs. Are they for access between floors of an office building, or machinery, or a mezzanine, etc.? Most of the time I've felt 1910.24 was fairly clear on when OSHA applies, but in cases where I felt there was a gray area, I've always used the most...
See if this document helps you.http://files.engineering.com/getfile.aspx?folder=65795ba0-206c-4196-abb3-0aa2f9e914c1&file=Design_of_Monorail_Systems.pdf
Are there any photos of the footing before it was poured? Did you or anyone else inspect the reinforcing before it was poured? The cracks seem unusually wide for having (6)-#6 in a 5 ft wide footing, so I'm wondering if the reinforcing was placed according to the plans. These questions may be...
This qualifies as a below-the-hook lifting device and should follow the design recommendations in ASME BTH-1 Design of Below-the-Hook Lifting Devices. This document gives guidance on selecting the appropriate safety factor or design factor as it is referred to in BTH-1.
Thanks BA. That's exactly my point. A 10' x 20' x 2" plate does sound a bit extreme. The original plan was to use a stiffened plate but I was just curious what thickness of plate would be required to span that distance. I guess I'll research to find out if there has been any real world...
