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Good Morning, I hope you are well. I am working on sizing an isolation UMHW pad that will be placed below a beam subjected to a load of 250 kips (as shown in attached PDF). Based on the triangular load distribution principle, I expect the load to be distributed over a certain area. My original...

Good Morning, I hope you are well. I am working on sizing an isolation UMHW pad that will be placed below a beam subjected to a load of 250 kips (as shown in attached PDF). Based on the triangular load distribution principle, I expect the load to be distributed over a certain area. My original...

Good Morning Fellow Engineers, For the overhead beam, I’ve been asked to provide a rated load tag. I plan to base the rating on CMAA guidelines, as using a beam trolley or clamp attached to the bottom flange and concentrated load on the middle likely represents the worst-case loading scenario...

Good Morning Fellow Engineers, (File attached) For calculating the lateral-torsional buckling bracing, AISC Appendix 6 specifies minimum requirements for both flexural strength about the longitudinal axis and flexural stiffness. - Yura provides the formulation for calculating the stiffness...

Thank you very much for the response kootk - I am using fundamentals of beam bracing as reference (page 10/16) - I am planning to have multiple diaphragm (2 on the ends & then approx. 9 ft apart). - By cross brace diaphragm, do u mean W beam as cross brace or any other k or x frame? - I can not...

The span is 45 feet. I think you're referring to system buckling, where both elements buckle simultaneously and behave as a single unit. Is that correct?

Good Morning Fellow Engineers, I am working on a structure with two W40x324 beams spaced 10 feet apart, each carrying a concentrated load of 150 kips at mid-span on the top flange (attached file showing AISC, YURA reference and loading condition) . My goal is to prevent lateral-torsional...

Good Morning Fellow Engineers, I am working on a structure with two W40x324 beams spaced 10 feet apart, each carrying a concentrated load of 150 kips at mid-span on the top flange (attached showing AISC, YURA reference and loading condition) . My goal is to prevent lateral-torsional buckling...

Total Load (vertical) = weight of machine + suspended load = F1 Seismic Load (horizontal) = Coefficient of seismic force * (Weight of machine + suspended load) (coefficient of seismic force is calculated based on site conditions and building codes) = F2 I understand that I should be using...

@rb1957: Yes, that is precisely I am doing. My understanding is that results should be more conservative. Please correct me If I am wrong. @SWComposites: I have already done a conservative hand analysis. I was looking for something to compare my numbers with. I am using the attached...

@FEAWay: Thank you very much for the valuable advices. I will look into the software mentioned #Rb1957: Based on mentioned link, seismic force acts on the center of gravity of the equipment and cause overturning that generates moment forces at the restraint points. I have calculated the...

Thank you very much but Unfortunately I do not have access to either response spectrum analysis or random vibration analysis. I only have simulation professional and it doesn't allow for linear dynamic simulations. Although I used the word seismic but sometimes I have situations where machine is...

Good Morning Fellow Engineers, I am trying to determine the generated reaction loads at bolted joints when a horizontal force acts on center of gravity of machine (Seismic Loads). My original Intent was to use the following approach -Create a coordinate system at COG of machine -Create a...

Thank you very much. I was able to use coordinate system for remote loads but do not see the option of using coordinate system for fixture. Can you please elaborate or show a screenshot?

Good morning fellow engineers, I hope you are doing well 1st: I am trying to simulate a fixture as shown in attached file. Eventually I would like to find reaction loads / moment at fixture and thus selecting isolator based on that. Any ideas on how I should proceed? 2nd: Is it possible to use...

Good Evening fellow engineers, I have recently received my engineering stamp and am curious about liability issues while stamping the layout drawings. I work with an elevator contractor. In the first phase, we usually issue the layout drawings showing the technical data table, plan view &...

Thank you very much. Really helpful kaffy

Good evening fellow engineers, I am looking for information regarding the swivel joint marked up in attached PDF. Is it just a hollow pipe with bolt going through it? or is it usually a pin inside a bearing and further enclosed inside pipe? Any information or breakdown of that joint will be...

Thank You

Good Evening fellow engineers, I am looking for some information about the slot length. I understand that CISC/AISC has tables which set a limit on length of slots. However, I see a lot of parts by different suppliers (sheet metals, steel plates, angle etc.) with really long slots. Having a...