Are you able to tilt the bars to maintain clear cover? Check out CRSI RN-2009-2 Evaluation of the Orientation of 90° and 180° Reinforcing Bar Hooks in Wide Members. It's available for free on the CRSI website bookstore. I've only skimmed through it, but I think it showed very little to no...
I view frost as an "infinite" force. If conditions are right for it to form, it can lift just about anything. I don't know of any calculation that will give frost pressure. I've seen published values of 10 tsf, but I believe they are based on back-calculating the pressure required to lift a...
Check out GRL's website. Most of their software is based on waves propogating in piles. They publish a lot of papers and give a lot of presentations to promote their software.
https://www.pile.com/reference-papers/
AWS D1.1 Table 3-1 gives compatible base metal/filler combinations. A36 up to 3/4" thick is a Group I metal that can be welded with E60XX electrodes. A36 over 3/4" thick is a Group II metal which can't be welded with E60XX electrodes. My AWS D1.1 is outdated and your specific project may not be...
Can you just use a mechanical anchorage instead of relying on threads? Something like a foundation "J Bolt" for bolting a sill plate to a concrete foundation wall. There should be manufacturer cut sheets that give capacities.
You can use oversize washer sandwhiched between two nut to create a...
Thanks for all the responses. I looked into RISA 2D for the moving load analysis, but unfortunately RISA has moved to a yearly subscription license. I don't think I would use it enough to justify a yearly expense. The trend of moving toward yearly subscriptions for program licenses is becoming...
I'm working on a work trestle for an upcoming bridge construction project. The contractor would like to back trucks with bridge beams onto the trestle for unloading. The truck/trailer/load will be +/- 140 kips on 6 axles. The trestle beams are simply supported spans. I'm trying to do this by...
I'm not sure why it was discontinued. The professor that created it moved to another school. Maybe the rights to the program belong to his previous school?
Fachwerk seems to be the other free program. I started playing around with it but didn't get too far...
I am designing a tie beam between two drilled shafts. My tie beam is 39" tall x 42" wide. I have a question about AASHTO LRFD 7 Temperature and Shrinkage steel requirements. I calculate a required area of steel = 0.22 in^2/ft. AASHTO calls this "area of reinforcement in each direction and each...
If you use the Wayback Machine, you can download directly from Dan Kuchma's old website
https://web.archive.org/web/20090903064452/http://dankuchma.com:80/
Thanks TME. I found some examples in the C\Program Files\Cast\Examples folder. I copied the truss from the deep beam example. I'm still working out the strut/tie types and node regions.
I was able to access the University of Illinois CAST page using the Wayback Machine. It has some FAQ and other helpful info
https://web.archive.org/web/20070707094813/http://www.cee.uiuc.edu:80/kuchma/strut_and_tie/
Thanks TME. I'm still struggling with this. I modified my model to include edge nodes with supports, but I still can't get the model to run. Right now I'm at this:
Is this what you mean? If not, could you provide a quick sketch?
Thanks Dik. I was looking through the pdf with examples that you posted. It looks like on page 59, I am still required to modify my truss with "stabilizer" elements to avoid an instability error message. Do you have any experience with this?
I'm trying to develop a strut and tie model for a beam connecting an overhead sign structure to a pair of drilled shafts. I'm having trouble developing the truss for the analysis. I've been following ACI publication SP-208 and SP-273 (Examples of Strut and Tie Models), AASHTO LRFD7, and Design...
Thanks rn14. I'll try to reach out to him.
Thanks dik. That is the link that takes you to tumcivil.com for the download. I'd like to avoid this site unless someone has experience with it.
Hi,
I've read about the CAST (Computer Aided Strut and Tie) program from University of Illinois. I can't find the download for this program anywhere. Does anyone know if it is still available? The only download I have found is from a website in Thailand. Ideally, I'd like to find a more...
I should probably provide some more details...
This pier cap will have a moment of +/- 600 kip-ft, shear of +/- 30 kip, and column load of +/- 15 kip, applied at the base of the overhead sign structure. The drilled shafts will be 42" diameter with an 8 ft c-c spacing.
I briefly looked at the...
