Buried Cantilevered Concrete Column Maximum Moment Location

[Renderuru]

Hello. I have a 10" diameter concrete Column buried 6 FT (anchored to footing at bottom). The pier protrudes 5FT above ground. Assuming I have a simple horizontal load at the top of the column, is there a method or rule of thumb to estimate the location of the maximum moment? Or, is the assumption that the column is completely encased at ground level a common acceptable assumption? Intuitively, I added an extra foot to my lever (so 6FT), but I would like to understand how this is normally done.

Thanks.

 

[oldestguy]

I'm rather sure by now you have been exposed to plenty of high tech ideas for your simple project. Perhaps instead contact an experienced contractor in your area, one who has worked on a variety of jobs and has been around a long time. Preferably they have PE there. Being that you have never done a job like this before why not get the ideas of someone who has done many. My bet a simple solution is there and all these fancy ideas usually reserved for big complicated jobs aren't helping. Spend a few bucks on that advice and you are likely to end up with what you want and at the lowest cost.

 

[dik]

Neat. Is that the faux MathCAD alternative that I've heard you mention in the past?

Yup... I'll attach a *.pdf of a bit of a help I provided for a cad operator in Kathmandu who was looking at producing post-tensioned shop drawings... When the embedded post is complete, I'll attach both *.pdf and *.sm files. Site problems uploading...tried uploading as a *.png, and that's broken too... You can see the file in Concrete Post-Tensioning...

Dik

 

[dik]

Try again... still broken... try again with a hint... still broken...



Dik

 

[dik]

KootK... link to file. I copied the file name that was referenced... the 'push button' still doesn't work.

http://files.engineering.com/getfil...ee6-9480-1c6f3a2e9f4e&file=Tendon_Profile.pdf

This is another typical example of how the program works. Recalled this from grade 11 math from about 50 years back, and I was surprised it worked...

Next thing to try is to see if I can use the method to upload two files at once..

Dik

 

[dik]

Test:

http://files.engineering.com/getfil...457a-84a3-964f2afd66d5&file=Tendon_Profile.sm

http://files.engineering.com/getfil...-99cd89564ce0&file=Tendon_Profile_Imperial.sm

It works...

Dik