A C15x40 channel framed as a beam supports a load from an HSS4x4 tube column. The column load is axial and wind load lateral, parallel to channel length. The tube column is connected to the channel with bolts through the web, with the tube against the outer face (opposite the toes of the...
Thanks for that info, dik. The tank shell is A212-B 0.85" thick which I'm finding is 38 ksi yield strength, 70 ksi tensile strength (according to a couple of sources). The nozzle is called out as 4" diameter, material A181-1, 300# thickness. I've not yet researched what that means. My...
In evaluating the load capacity of a nozzle on a propane tank it appears that the weld strength of the connection could be a primary consideration. I typically use 0.928k per inch of 1/16" fillet weld for 70ksi electrodes for new welds, (0.3 x nominal tensile strength of weld material x...
We have in our reference library at work 2010 AWS D1.1 which includes a table 5.8 where minimum fillet weld is 5/16" when base metal is greater than 3/4", and I found the same is true for the 2000 AWS D1.1. Is it the same in the 2020 AWS D1.1?
Thanks.
phamENG, here's my design approach:
Arrived at 1" thick plate by using AISC Design Guide DG1 "Base Plate and anchor Rod Design" 2nd Edition. Small moment Base Plate design. Treated the round vessel like a steel column, used an equivalent square area to determine variables "d" and "bf". Base...
Thanks for the responses. This case is a temporary "staging" location of a 6.86 foot diameter, 42 foot tall vessel weighing about 46 kips. It will be on a 6" thick slab. My old CRSI handbook (1961) says 6" slab is good for up to 500 psf, but the vessel bottom plate area would impose over 1200...
I have an old 1961 CRSI design handbook which has a chart of slab on grade thicknesses and their typical applications, with recommended reinforcement, and a range of allowable distributed loadings: 4" slab good for light commercial 100 psf; 5" commercial 100 to 200 psf; 6" industrial 400 to 500...
In ACI 318-14 chapter 17 effective embedment depth (hef)is used in equations to determine concrete breakout strength for a single anchor in tension, and for anchor groups. 17.4.2.3 says Where anchors are less than 1.5 x hef from three or more edges the value of hef is reduced to the larger of...
In ACI 318-14 chapter 17 effective embedment depth (hef)is used in equations to determine concrete breakout strength for a single anchor in tension, and for anchor groups. 17.4.2.3 says Where anchors are less than 1.5 x hef from three or more edges the value of hef is reduced to the larger of...
I'll admit that ASCE doesn't specifically address ice for non building structures, but Chapter 10 starts with this: "Atmospheric ice loads caused by freezing rain, snow, and in-cloud icing shall be considered in the design of ice-sensitive structures."
And cable tray manufacturer Eaton states...
Thanks for the responses. I did find that ASCE 7-16 says it is acceptable to multiply the ice volume for horizontal plates by 0.6, so that brings the ice weight down to 69 plf per ASCE. Maybe the average of the manufacturer's method and ASCE would be a reasonable compromise at 45 plf (using...
Outdoor cable tray is subject to the typical elements: Wind, Snow, Ice, Seismic. Our current project is located where the design ice thickness per ASCE7-16 is 1.5". Doing calcs according to ASCE the ice cross-sect area on each rail Ai = (pi) x ice thick x (channel diagonal measure + ice...
Thanks! I actually had downloaded the 1380 page pdf from the Ohio Board of Building Standards outlining the rule amendments adopted Nov.1, 2017, but I had not yet located that piece of information on page 1334. That's what I get for skimming!
Does anybody know which version of ASCE7 is to be used according to latest adopted Ohio Building Code? I don't have a copy of Ohio Building Code, but need to know....
Thanks.
Thank you for the responses.
1503, I see your point that usually this would be applied to structural elements such as concrete, wood, and steel, but I think a GeoTech guy would argue that the soil qualifies as a structural element too - one that is part of the system that carries the lateral...
I'm seeking your opinions about whether an exception for lateral loads in the IEBC (International Existing Building Code) can be applied to structures that are NOT buildings. I have just purchased access to this document, so I'm just beginning to look for answers. This question pertains to an...
In my attempts to validate the existing design, I've used soil data included in a report from 1967. It's a long list of numbers in psf, varying with the foundation's least dimension, foundation shape, (strip, square, or octagon), foundation depth. One set of values are for "loadings with no...
