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The program now allows biaxial SCL beams and columns loaded on both faces, using the existing equations in the program with the appropriate Fv and Fb values for the axes experiencing the stresses. This applies to the LVL material included with the program installation, and any custom SCL database file you make with database editor.
Input
The Oblique angle input in beam mode and the Load face input in column mode have been activated when SCL materials are selected to allow you to create members loaded on the weak axis..
Moment Design
For moment design, the program now calculates and shows design results similar to weak axis sawn lumber, with lines for both Mrx and Mry in the Analysis vs Design table. A line has been added to the additional data table showing the Fby value and its modification factors.
Shear Design
Shear design is now done for both principal directions, with separate lines shown in the Analysis vs Design table and the Additional data table for the x-axis and y-axis . In addition, an interaction criterion has been added, that the sum of the x-axis and y-axis analysis vs. design ratios must be less than one. This is necessitated by the internal mechanics of shear stresses.
Note that separate analysis had not been required to this point for any other material, because the equations for shear resistance Vr in 6.5.7.2.1 and 5.5.5.1 do not contain b or d or any other variable dependent on the x- vs y- direction. With the introduction of different Fvx and Fvy it has become necessary.
Database Editor
Weak-axis values for shear strength Fvy, bending moment strength Fby, modulus of elasticity Ey, and compressive resistance perpendicular to grain Fcpy have been added to the Grade properties in database editor to allow you to create and edit SCL materials with weak-axis properties.