|
|
|
|
|
The maximum lamination width used as the value B in O86 6.5.6.5.1 for the calculation of the Kzbg factor has until now been stored in the standard glulam database, which cannot be edited. To change this value, you had to create a custom glulam database. Since the construction of glulam layups varies from manufacturer to manufacturer, an easier way of changing this value has been added to the program. You can now enter a lamination width in Beam Input view to over-ride the lamination width from the database, as follows
Lamination Width Input
An input field has been added to beam view to allow you to specify the maximum lamination width to be used in O86 6.5.6.5.1. It is active only when a width is selected from the database, and is disabled when the width is unknown.
Default Value
Each time a new member width is selected, the program defaults to using the lamination width stored in the database as the maximum lamination width, and you must change it if you want a smaller or larger lamination width. If a non-standard width is typed in, the program uses that non-standard width as the default.
Unknown Section
If the member width is selected as Unknown, or a range of values, the program uses the lamination width stored in the database as the maximum lamination width for initial selection of passing sections (unless the “Use Member Width” checkbox described below is selected) . When a section is selected for detailed design, you can then enter a different maximum lamination width and redesign.
Use Member Width for KZbg Factor
When the member width is unknown, or a range of values is selected, a checkbox becomes active that allows you to use the member width as the value b when searching for a design for unknown section size, even if a narrower lamination width is in the database. This can result in a smaller size factor for KZbg.
This would ordinarily be done for glulam members constructed from remanufactured lumber, which require that the member width be used.
Output
The maximum lamination width as input in beam view now appears in the materials specification of the Design Check summary.
Database Editor
The input field “Lamination Width” has been renamed “Default Max. Lamination Width”.