Steel Column Cap Plate Design

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Steel column cap plate design. Ccos minimum column diameter is 3. Base plate material is a36 steel and concrete compressive strength is 3 ksi. When a concentrated tensile or compressive force acts on the end of a round or rectangular hss column with a cap plate and the force is in the direction of the hss axis the walls of the hss member could fail in sidewall yielding with consideration of shear lag. All pipe columns need to be designed by a qualified designer.

If cap and base plate splices are located away from a point of restraint special consideration should be given to ensuring adequate stiffness so that the member design is not invalidated. Typical beam flange connection with upper column and stiffener plates. Please contact the structural engineer involved with your project before you order your steel to make sure you have the correct cap and base plates for your columns. Typical column cap plate connection without stiffener plates.

Design a base plate given that the column dead load is 100 kips and live load is 150 kips. Crane girder design 5 crane column cap plates allow girder end rotation avoid thick cap plates place the bolts outside of the column flanges. Cap and base or end plate column splices are covered in chapter 6 of the green book. A w10 x 49 column is supported by a concrete pier whose top surface is 19 inches x 19 inches.

Do not use knee braces allow for adjustment in placing the crane girder. Most engineers will specify a bolted connection between the cap plate and steel beam to comply with osha regulations and for ease of construction and inspection. Detailing requirements design procedures worked examples and. Applied to the column member s and bolted to the beam or rafter especially cap plate connections in mezzanine floor structures.

The ccos must be attached to the column cap plate with 4 ccos self tapping screws through the end plate and into the bottom of the ccos. The design examples provide coverage of all applicable limit states whether or not a.