Autodesk 00128-051462-9310 User Guide - Page 1446

Location and roll grips for a curved column In Model view, the Location grip has six edit options you can cycle through by pressing CTRL. For each plane in which you can move the member (XY, YZ, or XZ), you have the option of maintaining or breaking connections with other structural members. When you choose to maintain connections, all connections are not necessarily maintained for every type of move. Maintenance of connections depends on whether the move is in or out of plane, how the members are connected, and which type of members are involved. Generally, columns take precedence over beams and braces in determining how connected members behave when one is moved. This behavior is summarized in the following table: If you specify Maintain Then ... Connections when moving ... a column other columns, beams, and braces connected to an endpoint of the column will also move, changing length and orientation as necessary to maintain the connection. (This is also true for any other members connected along the length of a member that is endpoint-connected to the column.) Structural members connected along the length of the column will only extend or shorten to remain connected; they will not change orientation unless the column is moved out of plane. For example, if a column is moved in the XY plane, beams or braces connected along its length will stay connected, even though their orientation changes. a beam or a brace other beams and braces connected to an endpoint of the beam or brace will also move, changing length and orientation as necessary to maintain the connection. Structural members connected along the length of the beam or brace will only extend or shorten to remain connected; they will not change orientation unless the beam is moved out of plane. For example, if a ridge beam is moved vertically, rafters connected along its length will stay connected, even though their orientation changes. The default edit mode is to maintain connections for moves along the XY plane. In Plan view, the Location grip is restricted to movement in one plane, but you still have the option to maintain or break connections. 2 Move the grip until the dimension value you want is displayed, and click once; or enter a value and press ENTER. If you want to enter a specific value for the second direction in any edit mode (for example, in the Y direction when editing along the XY plane), press TAB to cycle to the second direction. You can also lock the movement of the structural member along a specific direction. If you enter a value for either of the dimension directions in the current edit mode and then press TAB, the movement of the structural member is constrained to the second dimension direction. When editing along the XY plane, for example, you can enter a value for X dimension, and then press TAB. The X dimension is locked at that value, and movement of the structural member is constrained to the Y dimension direction. 3 Right-click, and click Deselect All to turn off grips. 1406 | Chapter 29 Structural Members