Must be specified as ALUMINUM

Design code to follow. See TR.48.1 Parameter Specifications.

Defines if material is Alclad.

• 0  -  Material used in the section is not an Alclad.
• 1  -  Material used in the section is an Alclad.

This variable can take on a value from 1 through 40. The default value represents the alloy 6061-T6.

See Table 14A.2 below for a list of values for this parameter and the alloy they represent. Table 3.3-1 in Section I-B of the Aluminum specifications provides information on the properties of the various alloys.

Effective length factor for torsional buckling. It is a fraction and is unit-less. Values can range from 0.01 (for a column completely prevented from torsional buckling) to any user specified large value. It is used to compute the KL/R ratio for twisting for determining the allowable stress in axial compression.

See Equation 3.4.7.2-6 on page I-A-28 of the Aluminum specifications for details.

This variable can take on a value from 1 through 4. They represent:

• 1  -  All
• 2  -  Extrusions
• 3  -  Drawn Tube
• 4  -  Pipe

The default value stands for All. The PRODUCT parameter finds mention in Table 3.3-1 in Section I-B of the Aluminum specifications.

Factor that indicates whether or not the structure is subjected to sidesway along the local Y axis of the member. The values are:

• 0  -  Sidesway is present along the local Y-axis of the member
• 1  -  There is no sidesway along the local Y-axis of the member.

The sidesway condition is used to determine the value of Cm explained in Section 4.1.1, page I-A-41 of the Aluminum specifications.

Factor that indicates whether or not the structure is subjected to sidesway along the local Z axis of the member. The values are:

• 0  -  Sidesway is present along the local Z-axis of the member
• 1  -  There is no sidesway along the local Z-axis of the member.

The sidesway condition is used to determine the value of Cm explained in Section 4.1.1, page I-A-41 of the Aluminum specifications.

In Table 3.4-1 in Section I-A of the Aluminum specifications, it is mentioned that the value of coefficients nu, ny and na  are dependent upon whether the structure being designed is a building or a bridge. Users may convey this information to STAAD using the parameter STRUCTURE. The values that can be assigned to this parameter are:

• 1  -  Buildings and similar type structures
• 2  -  Bridges and similar type structures

This parameter is used to control the level of detail in which the design output is reported in the output file. The allowable values are:

• 1  -  Prints only the member number, section name, ratio, and PASS/FAIL status.
• 2  -  Prints the design summary in addition to that printed by TRACK 1
• 3  -  Prints the member properties and alloy properties in addition to that printed byTRACK 2.
• 4  -  Prints the values of variables used in design in addition to that printed by TRACK 3.

In Table 3.4-2 in Section I-A of the Aluminum specifications, it is mentioned that the value of coefficients Kt and Kc are dependent upon whether or not, the location of the section where design is done is within 1.0 inch of a weld. The WELD parameter is used in STAAD for this purpose. The values that can be assigned to this parameter are:

• 0 - Region is farther than 1.0in from a weld
• 1 - Region is within 1.0in from a weld