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D1.B.2.2 Design Parameters

The following table contains a list of parameters and their default values.

Table 1. American Castellated Beam Design Parameters
Parameter Name Default Value Description
CB 1.0 Cb value used for computing allowable bending stress per Chapter F of the AISC specifications.
CMZ 0.85 Cm value in local z-axis. Used in the interaction equations in Chapter H of the AISC specifications.
EOPEN 1.5e + b

Distance from the ecenter of the last hole to the end of the member.

1.5e + b is the minimum allowable value. Any value greater than or equal to this minimum will be used by the program.

See Figure 2.13 for the definition of e and b.

FYLD 36 ksi Yield stress of steel.
RATIO 1.0 Permissible maximum ratio of actual load to section capacity. Any input value will be used to change the right hand side of the governing interaction equations in Chapter H and elsewhere in the AISC specifications.
SOPEN 1.5e + b

Distance from the start of the member to the center of the first hole.

1.5e + b is the minimum allowable value. Any value greater than or equal to this minimum will be used by the program.

See Figure 2.13 for the definition of e and b.

TRACK 0

Used to control the level of description of design output.

0 = Detailed output suppressed

1 = Detail output included

UNL Member Length Unsupported length of compression flange for calculating allowable bending stress.