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.

Design bearing strength of concrete 0 45 ƒ ck. Connections and element design apex connection column base bracing connection eaves connections purlins. 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. Of the column base plate connection in the elastic and plastic ranges and for seismic loading possibly even the cyclic force deformation relations.

The bolts are cast into the concrete base in location tubes or cones and are fitted with anchor plates to prevent pull out. Many of the stress and deflection equations and calculators referenced from. Beam column base plate design. Engineering calculators menu engineering analysis menu.

A factored load on the column design bearing strength of concrete. Flat plates stress deflection equations and calculators. 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. Where ƒ ck characteristic strength of concrete.

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. Aisc home american institute of steel construction. Construction of portal frames. Typically fixed base columns are recessed below finished floor.

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. However frames with fixed base may require a more expensive foundation. 3 22 c lumn flange thickness in. Case a is a l ad case with axial c mpressi n and shear.

Fixed base columns must also be straight columns and are typically deeper at its base in comparison to pinned base. Frames with pinned bases are heavier than those having fixity at the bases. Additional plates on the column and anchor rods required. The base plate this will result in less labor to fabricate and will result in a more economic design.