As some of you are probably aware Butler buildings uses an unusual cold rolled section for their truss purlin top and bottom chords. Has anyone ever had to reinforce a truss purlin due to a point load located off of a panel point? What does that detail look like?
I am new to STAAD.foundation and am just learning the ins and outs of the program. I am working on an analysis of an existing combined footing for extra loading. When the design fails, I cannot get the calculation results to show up. The calculation sheet says "Calculation sheet is not available...
I am working on a retrofit project at a plant in Brazil. The existing drawings given to us appear to have Canadian steel shapes (W150x13, W200x28.8, etc.). Is this common in South America? If not do they use other countries steel or do they have their own set of structural shapes? What is the...
I am working on a connection detail that I would like some input on. It involves new beams going over top of an existing column. The new beam sizes had to be increased to support larger loads, but the existing column will remain.
Since the new beams are deeper they won't go over top the column...
I am working on a project to upgrade an existing crane rail system to a higher capacity.
The question I have is regarding the Longitudinal or Tractive force load. AISE states it is equal to 20 percent of the maximum load on driving wheels. Let's say for example my tractive force load is 0.2*45k...
I am designing some new bridge crane runways for a client. When determining the side thrust load to the columns, is that load split between each side (50%) or applied 100% to each column.
For example: Side Thrust load= 60k. Is that 30k to each side or 60k to each side.
I agree with everything you guys are saying with regards to looking into constructability issues, etc. before finalizing the design.
The reason I'm in this situation is because the guy who did the engineering left our company once the package was issued for construction. I was not involved with...
Thanks for all the info. As usual the story was totally wrong by the time it went from the sub-contractor to the contractor to the client's project manager to our project manager and then finally to me.
Come to find out, the ACP contractor was acutally concerned about getting his rig into tight...
I am running into some problems with a project involving auger cast piles. This involves a new pipe rack we have designed that will be placed within an existing refinery. There are many places that have either existing foundations nearby or existing piping running about 1'-0" above grade.
The...
You could try doing a "save as" on your model and creating a new one. In the new model delete the mat and place supports at the bottom of the super structure. Now run your seismic cases based on the dead weight of the super structure alone.
You can then manually input the base shear values back...
Use the Ly or Lz command for the member in question. Depending on which direction the member is braced in apply an Ly (weak axis) or Lz (Strong Axis) parameter and use the value for the effective length of the member that you want it to be.
Example: If member 100 is unbraced for 20 ft. along the...
Try this...
In the Load and Definition tab click on Load Cases Details and hit the "Add" button. When the window opens click on "Load Generation". You should be able to add your pre-defined load to a load case from there.
Let's say the bottom of your column member has a 4 bolt base plate connection to the foundation. Do you consider this as a fixed condition or a pinned condition.
At what point do you consider there is some rotation at the base plate for which a moment or fixed condition would not be...
When drawing in "feet and inches", if I have a dimension that is an even foot (ie. 28ft.) V8 only shows it as 28'. I want it to display 28'-0". It will work if I have a dimension such as 10'-8" but not if it were 10'.
I have checked that my sub units are turned on in the design file and my...
Whenever I select the batch plot command, I get the "Microstation Text Window" and the program essentially crashes. Any ideas as to what I could do to fix this?
Thanks...
Is it still possible to find the ninth edition Manual of Steel Construction - Allowable Stress Design? If so, can someone please tell me where or how....
Thanks
I'm looking for a faster way to get the beam end forces envelope for memebers. Currently I go into report setup and under range I manually type in each beam number that I want an end force envelope for. Is there a way graphically you can do this.
I noticed beam end forces can be done in the...
Can anyone help me with grouping members graphically? I know how to do it in the line editor, but can't find the command in the graphical interface. All help is appreciated.
