User Guide

RISA-3D User’s Guide
Version 5.0
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Click on this button .
This “unselects” the entire model. See how the model is now displayed in gray?
Now try each of the selection tools below.
The Box Select and Box Unselect tools work as you might expect; you
use them to draw a box around the part of the model you wish to select or
unselect. Only items that are entirely in the box will be affected.
To use these, first click the button then move the mouse to the model view. The
button stays down and the cursor changes to indicate that you are in the box
mode.
Click and hold the mouse button to establish an anchor point for the box; then
move the mouse such that the box encloses that part of the model to be selected or
unselected. Then release the mouse to perform the select or unselect operation.
The box cursor remains and you may draw as many boxes as you need until you
are finished.
You can end the operation by re-clicking the box button to turn the option off.
You can cancel a box that is underway by dragging the mouse off the model view
while still holding the mouse button down.
The Polygon Select and Polygon Unselect tools work in a similar
fashion. You use them to draw a polygon around the part of the model you wish
to select or unselect. The polygon may have many sides, so to indicate that you
are finished drawing click the mouse twice at the last location.
With the Line Select and Line Unselect tools you simply draw a line
through all of the items that you want to select or unselect. Just click and hold the
mouse at the start of the line and then draw the line until you release the mouse
button. This is a great tool for selecting the columns or the web members in the
truss.
The Invert Selected option is used to invert, or reverse, the selected state of
the model. All selected items are made unselected, and all unselected items are
made selected. This can be very useful when just a few items are to be selected in
a large model; just click on the desired items to unselect them, then click “Invert
Selected” to “flip” the selection.
The Criteria Selection button allows you to select items in ways other than
choosing them on the screen. You can select items between certain coordinates.
You can also select items by their labels such as all joints from N7 to N15. For
members, you can select by many criteria such as orientation, section set,
database shape and material. Plates can be selected by material, thickness and
orientation.