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This group of check boxes allows you to turn on and off the loads and forces that appear on the screen, to reduce clutter and to isolate the analysis results that you wish to see. Some of the settings are exclusive – setting one turns the other on or off. These dependencies are indicated by borders around the interdependent settings with explanatory phrases like "All or none" and "one or both".
For each setting, you can independently control what appears in Plan View, Elevation View, and the Design Results by means of separate lists of checkboxes.
Show Menus
The same settings that appear here can be changed by means of the Show settings on the Data Bar. Any particular setting can be changed more quickly by using the Show menus, and this dialog is best used to overhaul the configuration of loads and forces.
Direction of Loads and Forces
In Plan View, choose whether to view loads and forces that ultimately bear on north-south walls or east-west walls, or both. Shear loads bearing on the east building face will be grouped with vertical loads and C&C loads on the south and north faces, because all of these forces go into designing east-west walls.
The main advantage of using this menu is to reduce clutter by showing only the forces in one direction, particularly where there are a lot of data at the corners of a structure.
In the Show menu, these selections appear in a sub-menu under the Orientation item.
Distribution Method
In Plan View and Elevation View, view forces derived from the rigid method or flexible method, but not both. You can view either one or both in the Design Results.
In the Show menu, these choices are found in a sub-menu under the main menu item Forces.
Design Case
You can choose to view loads, and all selected forces derived from them, for seismic or wind loading, but not both simultaneously. You can view either one or both in the Design Results.
The Show men u has these two selections at the top of the menu.
Load Directions
For wind loads, you must choose one of the combinations of load directions , e.g West->east and South->north. For wind loads, these correspond to wind coming from the northeast,southeast, southwest, and northwest.
The Show menu item for this depends on the design case being viewed.
Low-rise windward corner
For the low-rise method, the program displays the low-rise wind load case for the windward corner corresponding to the selection, e.g. the southwest corner if West->east and south->north is selected.
When the low-rise method is selected, the Show menu names these selections as Southeast, Northwest, etc.
All heights
For all heights wind load methods, you will see the wind loads for the combination of orthogonal directions defined by the selection. They do not represent separate load cases except in that loads and forces can be different in opposing directions for asymmetric structures.
Seismic
When using the Show menu, only two of the options are available for seismic design, to allow you to view forces in opposing directions. These forces are ordinarily the same, but can be different if there are offset openings or dissimilar hold-downs and force distribution is by shear wall deflection.
Applied loads are always the same in both directions.
Critical forces
It is possible to view the critical forces in Plan View using a menu item in the Load Directions sub-menu that is found in the in the Show menu only.
In this case, no loads will appear on the screen and the forces shown are those derived from the critical load case on each shear line. For low-rise wind loads this is the critical load for all the low rise wind load cases arising from 4 windward corners and 2 load cases.
Load Type
Turn on and off the main load types – shear loads (both seismic and wind), uplift loads, dead loads, C&C loads or building masses. Any of these can be on or off in any view.
In the Show menu, these choices are found in a sub-menu under the main menu item Loads.
Combined or separate wind loads
The program allows list the loads in the Design results as all the loads generated on each element of the structure, or as the combination of loads where they overlap. The first option allows you to see which building element the load corresponds to, and the second of these creates a more compact list of loads.
The Show menu item for this setting appears when the Design Results are showing, under Loads/Wind Shear.
Forces
These settings allow you to turn on and off the forces created by the program – shear line forces, dragstrut forces, and holddown forces.
In the Show menu, these choices appear in a sub-menu under Forces in Plan View and Elevation View, and under Loads - User Applied Forces in the Design Results.
Shear Line Forces
In Plan View, this controls the forces shown by small arrows at the start of each wall line. In Elevation View, this force and several derivative forces are turned on and off - wall segment forces, diaphragm shear force, design shear flow.
In the Design Results, this controls only user-applied shear line forces, which are specially designated as such in the Load Input view.
Hold-downs
In Elevation view, you can view the combined effect of shear overturning, dead, and wind uplift hold-down force or each of these components separately. In Plan view, only the combined effect is shown.
These choices appear in the Show menu under Hold-downs.
For Design Results, checking either of these options controls the display of the entire Hold-downs table, as it contains both combined and separate info. There is no Show menu item for Design Results hold-downs.
Drag strut forces
For the time being, checking either hold-downs or drag struts in the Design Results columns controls the display of both the Hold-down Design and Drag Strut tables, as these tables used to be combined into one.
Load Cases
Low-rise Case
If the low-rise method is used for wind load generation, you can choose North-south or East-west as the low rise case representing Case A or Case B from NBC Structural Commentaries figure I-7. Whether North-south or East-west represent Case A or Case B depends on the ridge direction of the structure.