D4.D.6 Design Parameters
The design parameters outlined in Table below may be used to control the design procedure. These parameters communicate design decisions from the engineer to the program and thus allows the engineer to control the design process to suit an application's specific needs.
The default parameter values have been selected such that they are frequently used numbers for conventional design. Depending on the particular design requirements, some or all of these parameter values may be changed to exactly model the physical structure.
| Parameter Name | Default Value | Description |
|---|---|---|
| CODE | - | Must be specified as TIMBER CANADIAN. |
| CHIX | 1.0 | Curvature Factor for Compression [Clause 6.5.6.5.2] |
| CV | 1.0 | Shear Load Coefficient [Table 6.5.7.4A] |
| KD | 1.0 | Load Duration Factor [Clause.4.3.2, Table 4.3.2] |
| KH | 1.0 | System Factor [Clause 5.4.4/6.4.3, Table 5.4.4] |
| KN | 1.0 | Notch Factor [Clause 5.4.7.2.2] |
| KSB | 1.0 |
Service Condition Factor for Bending at Extreme Fibre Applicable for bending at extreme fibre [Table 5.4.2 and 6.4.2] |
| KSC | 1.0 |
Service Condition Factor for Compression, Applicable for compression parallel to grain [Table 5.4.2 and 6.4.2] |
| KSE | 1.0 |
Service Condition Factor for Modulus of Elasticity, Applicable for modulus of elasticity [Table 5.4.2 and 6.4.2] |
| KST | 1.0 |
Service Condition Factor for Tension, Applicable for tension parallel to grain [Table 5.4.2 and 6.4.2] |
| KSV | 1.0 |
Service Condition Factor for Shear, Applicable for longitudinal shear [Table 5.4.2 and 6.4.2] |
| KX | 1.0 | K value for flexural torsional buckling |
| KY | 1.0 | K value in local Y-axis, usually minor axis |
| KZ | 1.0 | K value in local Z-axis, usually major axis |
| KZB | 1.0 |
Size Factor for Bending, Applicable for bending [Clause.5.4.5 and Table 5.4.5] |
| KZCP | 1.0 |
Size Factor for Compression, Applicable for compression perpendicular to grain [Clause .5.4.5 and Table 5.4.5] |
| KZT | 1.0 |
Size Factor for Tension, Applicable for tension parallel to grain [Clause 5.4.5 and Table 5.4.5] |
| KZV | 1.0 | Size Factor for Shear [Clause 5.4.5 and Table 5.4.5] |
| K_SCP | 1.0 |
Service Condition Factor for Compression, Applicable for compression perpendicular to grain [Clause 5.4.2 and Table 6.4.2] |
| K_T | 1.0 | Treatment Factor [Clause 5.4.3/6.4.4] |
| K_ZC | 1.0 |
Size Factor for Compression, Applicable for compression parallel to grain [Clause 5.4.5 and Table 5.4.5] |
| LX | Member length | Length for flexural torsional buckling |
| LY | Member length | Length in local Y axis for slenderness value KL/r |
| LZ | Member length | Length in local Z axis for slenderness value KL/r |
| NSF | 1.0 | Net section factor for tension members |
| RATIO | 1.0 | Permissible Ratio of Actual to Allowable Value |