Actually, I shouldn’t say "a lot of welding." I have a 45-foot-long W40x324 beam with four doublers (two at each corner, 1 on each side of web) and 26 stiffeners (13 on each side of the web).
Good Morning Fellow Engineers,
I'm working on a project with multiple full-length transverse stiffeners & doublers welded along the beam. Original Plan was to weld continuously on all sides—across both flanges and the web. However, I'm concerned about potential warping due to the extensive...
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 &...
