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Certain applications, like floor loading, have a standard set of loads e.g. 40 Live, 15 dead, that are mandated by design codes and standards for certain types of buildings. This feature allows you to apply standard loads that are activated upon creation of new files and initial change of member type, to avoid the repetitive task of entering these loads for every new file created.
Different default loads can be entered for each member type in Sizer. This feature applies to Beam mode and Column mode. There are no default loads in Concept Mode.
A new binary file has been created in the Sizer installation folder called Sizer.wss to contain the default loads. It is automatically generated when you create default loads.
Creating, Saving, and Applying Default Loads
The program is not delivered with “factory” default loads. Any default loads are created by you.
The usual Sizer load input screen is used for default loads. Any number and type of loads shown in this screen can be saved as defaults. When you press the "Save as default loads" button, all loads on that member are saved to the Sizer.wss file.
You can eliminate default loads by pressing Save as default loads for a blank set of loads.
If repeating loads are included, the program includes only those repeating loads that were applied to the original member when default loads are saved.
Default loads are applied when a new file is created of a type for which default loads exist, or if you subsequently change the member type (e.g. from Beam to Floor Joist). The original default loads are removed and replaced with the default loads of the changed type. Existing loads that are not default loads remain and appear after the newly added default loads.
Default loads are automatically created for members that have not been saved to disk. Once a member has been saved, no loads are automatically created or deleted.
Therefore, if you wish to suppress the behaviour of creating default loads when member type changes, you can save the file.
If a default load has been modified by pressing the modify button in Loads view, the load is no longer considered a default load. This implies that when a default load is modified, it is not erased if you change the type of the member.
Validating Default Loads
The beam configuration (member length and bearing length and design span settings are in general different on the actual member than on the default member for which the loads are defined.
Uniform loads
Uniformly distributed line and area loads are extended or shortened to be the length of the new member.
Partial loads
Partial loads whose endpoint is after the end of the member are shortened to end at the member. Partial loads which start on or after the end of the member are not applied.
Trapezoidal or triangular loads
The magnitude of trapezoidal or triangular loads that are shortened is the magnitude at the end of the longer member. The program does not truncate the load magnitude using equal triangles.
Point loads
Point loads that are at the end of the member are placed at the end of the shortened member. Point loads that are between the end of the shortened member and the longer member are not applied.
Note that “end of member” means anywhere within the bearing area of the member. For unknown bearing length, it is the end of the beam.