Composite Properties (Composite Beams)
| Setting | Description |
|---|---|
| Concrete Thickness | This is the concrete thickness that exists above the flutes of the metal deck. The thickness is shown for the left and right side of the beam in case differences occur. |
| Unit Weight of Concrete | This is the weight of the concrete. The weight is given for the left and right side of the beam in case differences occur. |
| f'c | This is the strength of the concrete. The strength is given for the left and right side of the beam, and may differ. |
| Decking Orientation | This is the angle of the metal deck span, measured in degrees, from the referenced beam. The angle is given for the left and right side of the beam. The deck span will be considered "Parallel" with a beam if it is oriented within 10 degrees of that beam. |
| Decking Type | This is the type of deck that was selected by the user. The deck type is given for the left and right side of the beam. |
| bcf | This is the effective concrete flange width used in the composite design of the beam. |
| Y bar | This is the distance from the bottom of the steel beam to the elastic neutral axis of the composite section. |
| Mbvc |
This is the flexural strength of the composite beam based on complete shear connection, β = 1.0 (full composite action). |
| Mbv | This is the flexural strength of the composite beam at the point of maximum moment, based on partial shear connection (partial composite action). |
| C | This is the effective concrete flange force based on partial shear connection (partial composite action). |
| PNA | This is the plastic neutral axis of the composite section. |
| Zsb | This is the section modulus of the steel beam corresponding to the extreme bottom fibres of the steel beam. |
| Zcb | This is the section modulus of the composite beam corresponding to the extreme bottom fibres of the steel beam. |
| Ieti | This is the effective second moment of area of the composite cross-section under immediate loads. |
| Iti | This is the transformed second moment of area of a composite beam cross-section under immediate loads. |
| Stud Length | This is the nominal length of shear stud as selected by the user. |
| Stud Diameter | This is the nominal diameter of the shear stud as selected by the user. |
| Stud Capacity (fds) | This is the shear capacity of a single shear stud. When multiple rows of studs are required, the shear capacity of a stud in a single row is indicated by fds [1], that of a stud in a double row by fds [2], and that of a stud in a triple row by fds [3]. |
| # of Studs | This is the number of studs required for the design of the beam. The number of studs is given for full composite action (complete shear connection) or maximum, if full composite action cannot be obtained, for partial composite action (partial shear connection) and the actual number used. Unless otherwise specified by the user the actual and the partial number of studs will be the same. When there exists a point load on the designed beam, a series of studs may be listed with a comma separating them. Each number represents the number of studs required between each point load or segment, starting at the left support. |
| Number of Stud Rows | This is the number of rows of studs necessary to place the number of studs called for. |
| Percent of Full Composite Action | This is the percent of full composite action (complete shear connection) that will be obtained if the number and distribution of studs conform to that specified for Actual. It represents the worst condition from any segment. |