Can you advise on what the most appropriate standards (for the loads and structural design of moveable equipment) to cite should be when writing specifications to procure a fabricated piece of equipment in the US such as a moveable stack-out or recliamer, or a traveling gantry used for loading...
Can you advise on what the most appropriate standards (for the loads and structural design of moveable equipment) to cite should be when writing specifications to procure a fabricated piece of equipment such as a moveable stack-out or recliamer, or a traveling gantry used for loading and...
I need some help understanding how to interpret the limits of clearances shown in Table 5 of ASME 4.1 "Preferred Limits and Fits for Cylindrical Parts". For a 5.50" diameter pin (forming a hinge pin that goes into a bushing), with a Class RC 7 fit, it appears Table 5 indicates the ID of the...
EdStainless,
Regarding the ellipsis, what is the approapriate way to know or specify reaonable values if they are not specified? Why do you think they are not specified?
The environment is a steel flood gate sitting out in the weather for 50+ years, getting used seldom (perhaps once every...
I welcome some suggestions on a metallurgy question about which stainless steels specifications would be most appropriate for some manufactured hinge pins. My project is 99% structural using carbon steel, of which I am very experienced, designing heavy industrial structures, flood walls, and...
Attached is my current draft for tolerances, showing each to the amount we can tolerate in that direction.http://files.engineering.com/getfile.aspx?folder=29cc8716-1205-40bc-ace7-b0d74d29dbe4&file=Tolerances_Attachment.pdf
dheng and JStephen posing some useful thoughts to consider.
For Concrete jambs and foundation we set the tolerances per ACI 117, but tightened them in some respects (since ACI tolerances are fairly loose, particularly for foundations) to make it more consistent with the function, yet...
For the most part, I feel like I have arrived at a practical set of tolerances to specify at this point. As stated by one above, looking at the function lead to some logical compromises to keep from over specifying.
For example, around the permiter I have rubber seals that can be unbolted and...
I am looking for dimensional tolerances for the final fabricated gate to confirm to for acceptance. It will be up to the fabricator to choose what means and methods he uses or processes and jigs to achieve the specificaitons.
But I want to make sure the requirements are within practical...
I am looking for a good source to define recommended tolerances for welded steel fabrications (large steel flood gates), something I can cite in the project specification I am writing to impose practical limits on the final product. Most of my prior experience has been with structural steel...
We have a question about how to properly model a sheet pile wall for a total stress analysis, particularly where the tension zone is to be ignored.
We have a cantilever sheet pile wall with the soil at the same height on both sides that is to be designed for holding back a still pool of water...
Will it likely pose a problem to remove the ventilators on the top of a commercial building. We have a 40 year old commercial building that will soon get a new roof (changing from a built-up roof system to a simgle ply membrane roofing system). The roofing contractor suggested removing the...
Should it pose a problem to remove the ventilators on the top of a commercial building. We have a 40 year old commercial building that will soon get a new roof (changing from a built-up roof system to a simgle ply membrane roofing system). The roofing contractor suggested removing the existing...
Should we particularly be concerned with either brittle fracture or any other similar issues in the use of ASTM A572 GR 50 plates in the design of some large structural bins and hoppers for coal storage. It will be located in northern US climates. As a structual engineer, we are most familiar...
We are trying to confirm the stability of a vessel made with SA-516-70N which will have girth welds PWHT to 1200 deg F. ASME Section II, Appendix 3 give some insight on calculating allowable stresses at various temperatures. At higher temperatures, it seems to be governed by the Creep/Rupture...
