The effect of grout under steel column base on base plate thickness
The effect of grout under steel column base on base plate thickness
(OP)
I have a fixed column base of straight built up steel column. i want to know if I provided a non shrinkable grout under the base plate will this help in reducing the base plate thickness in the compression side of the plate or even general reduction.






RE: The effect of grout under steel column base on base plate thickness
RE: The effect of grout under steel column base on base plate thickness
BA
RE: The effect of grout under steel column base on base plate thickness
RE: The effect of grout under steel column base on base plate thickness
If you're talking about considering combined anchor bolt compression and grout compression... tread carefully.
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The name is a long story -- just call me Lo.
RE: The effect of grout under steel column base on base plate thickness
RE: The effect of grout under steel column base on base plate thickness
Otherwise, I'm not aware of an officially sanctioned method to determine the distribution and limits of the compression reaction. Do you take a triangular pressure distribution (like soils)? or a Whitney stress block like RC? something different? All reasonable in the right circumstances, but it requires some justification (and then typically an iterative solution).
(If I'm simply not aware -- I'd love to know!)
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The name is a long story -- just call me Lo.
RE: The effect of grout under steel column base on base plate thickness
I thought that washers were required with oversize holes when the bolt was in shear, not when the bolt is in tension or compression. Leveling nuts on the bottom and nuts on top of the plate should be sufficient to transmit axial forces.
BA
RE: The effect of grout under steel column base on base plate thickness
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The name is a long story -- just call me Lo.
RE: The effect of grout under steel column base on base plate thickness
RE: The effect of grout under steel column base on base plate thickness
RE: The effect of grout under steel column base on base plate thickness
You can check the effects of the installed grout below the base plate by using this computer software: ColumnBase Software
For base plate thickness, column design, stiffener results and the design of the footing and grout for bearing stresses.