Uplift on Base Plate
Uplift on Base Plate
(OP)
I can find a lot of references on designing base plates for compression and/or for bending, but not anything for uplift case only. Or any reference for plate bending with point loads(bolts) placed at different locations on a plate with one fixed edge? I have to check some already installed plates
RE: Uplift on Base Plate
How to treat the prying action you can see in the AISC Manual but for not too thick plates some use 125% of the standing tension.
Also, sometimes is more logical to transfer the tension in shear than in bending action. To such purpose you fillet weld fins to the column and bolt down between the fins against the foundation.
In all your design problem also happens for the tensile side of weakly loaded columns where flexion predominates.
RE: Uplift on Base Plate
AISC Steel Design Guide Series - Column Base Plates by J. T. DeWolf and D. T. Ricker.
Analysis and Design of Structural Connection by L.H. Martin
RE: Uplift on Base Plate
It is also useful for beam splice joints. Appendix M of the New Zealand steel code NZS 3404 Part 1 has also some guidelines.
If you need something in a hurry, I could fax a copy of the CONDOR stuff to you. So you would have to provide a number etc.
RE: Uplift on Base Plate
A plate with connected with the representative of the column etc. It is quite simple and if you have done it once you could alter the file for the future.
I know that there is a FEA based baseplate design program available. Look for it if you need a more frequent detailed analysis.
Cheers,
Kocos
RE: Uplift on Base Plate
Anyway, I am going to try the hanger approach, I originally considered it but didn't know if it was accurate for such thick plates (>1").