Fixed Column Base Plate Design

The graphic of the fixed base column to the left is just an example of what the.

Fixed column base plate design.

The pr gressi n f beam c lumn l adings in rder f in creasing m ments is presented in f ur l ad cases. Design of column base plates typical column bases as shown below consist of a single plate fillet welded to the end of the column and attached to the foundation with four holding down bolts. Beam column base plate design. Engineering calculators menu engineering analysis menu.

A factored load on the column design bearing strength of concrete. The plan dimensions of the slab base plate may now be selected to provide the above area and also so that the projections a and b beyond the rectangle circumscribing the column area nearly equal fig. However frames with fixed base may require a more expensive foundation. Typically fixed base columns are recessed below finished floor.

Additional plates on the column and anchor rods required. Base plate tensi n interface cantilever parallel t m ment directi n in. Of the column base plate connection in the elastic and plastic ranges and for seismic loading possibly even the cyclic force deformation relations. Many of the stress and deflection equations and calculators referenced from.

The base plate this will result in less labor to fabricate and will result in a more economic design. Adding stiffeners and other plates to a base plate assembly is labor intensive compared to using a thicker base plate that could eliminate the need for these additional stiffener plates. The follow web pages contain engineering design calculators that will determine the amount of deflection and stress a flat plate of known thickness will deflect under the specified load and distribution. Frames with pinned bases are heavier than those having fixity at the bases.

3 22 c lumn flange thickness in. Case a is a l ad case with axial c mpressi n and shear. The forces and deformations from the structural analyses used to design the column base plate connection are dependent on the choice of the column base plate connection details. The bolts are cast into the concrete base in location tubes or cones and are fitted with anchor plates to prevent pull out.

Design bearing strength of concrete 0 45 ƒ ck. Flat plates stress deflection equations and calculators. Where ƒ ck characteristic strength of concrete. Connections and element design apex connection column base bracing connection eaves connections purlins.