Steel Column Cap Plate Design

Hss column cap plate connections limit state of wall local yielding.

Steel column cap plate design.

Detailing requirements design procedures worked examples and. Design examples v14 0 american institute of steel construction iii preface the primary objective of these design examples is to provide illustrations of the use of the 2010 aisc specification for structural steel buildings ansi aisc 360 10 and the 14th edition of the aisc steel construction manual. Base plate material is a36 steel and concrete compressive strength is 3 ksi. Cap and base or end plate column splices are covered in chapter 6 of the green book.

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. 6 tie back design. All pipe columns need to be designed by a qualified designer. 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.

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. Design a base plate given that the column dead load is 100 kips and live load is 150 kips. A w10 x 49 column is supported by a concrete pier whose top surface is 19 inches x 19 inches. The design examples provide coverage of all applicable limit states whether or not a.

Typical beam flange connection with upper column and stiffener plates. Do not use knee braces allow for adjustment in placing the crane girder. Ccos minimum column diameter is 3. 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.

Max column cap plate thickness 1 2 and 3 16 min. Applied to the column member s and bolted to the beam or rafter especially cap plate connections in mezzanine floor structures.