Download 7.4. Default Loads - Robot Structural Analysis Professional

page: 134
CBS Pro Version 20.1 – User’s Manual
is a load acting in the plane perpendicular to z axis. An angle of the horizontal load is
measured from x axis in the direction of y axis.
The planar load may act in the direction perpendicular to an object or be a ‘projected’ load
(then the load refers to the object length projected onto the plane normal to the direction of
load).
The planar load is assigned to planar objects (slab, wall, raft foundation); it may also be
applied to any point of the structure.
8.3. Definition of Loads
To define a load in the CBS Pro program, the user should follow the steps below:

choose load variant: vertical load
or horizontal load

select load type: concentrated load

determine a load value in the edit field that becomes accessible after selection of a load
type

choose a load nature from the drop-down list located to the right of the edit field where the
load value is defined

apply the defined load to an object; the user may assign a load only to this object type
which allows for application of a chosen load type.
, linear load
or planar load
There is a certain difference in definition of vertical and horizontal loads. If the vertical load is
selected, during definition the user determines point (or points) where a force is applied (for a
load assigned to object, the user chooses an object). For the horizontal load there are two
possibilities:

geometrical definition – a point (or points) to which a force is applied are defined; after
defining the last characteristic load point, the cursor switches to the mode which enables
defining an angle – the distance of the mouse cursor to the snap point is unimportant then,
only the angle value is significant. NOTE: There are ‘preferred directions’ set for the
cursor, which results in that that if the angle differs negligibly from the direction of axes X
or Y, the angle is ‘snapped’ to the direction of the axes mentioned.

definition of a load assigned to object – the program waits for the user to indicate an
element to which the load is to be applied. Objects are filtered, which means that it is
possible to select only this element type to which a given type of load may be applied.
Once an object is indicated, the cursor changes its mode to that which enables defining an
angle (as described for the geometrical definition).
The program includes the option Load Assigned to Object
the 2D view and in the 3D view.
NOTE:
. The option is available both in
When defining a load assigned to an object of the value and subnature
identical as a load already existing, the program displays a message informing
that such load has been applied to an object to avoid doubling the loads.
It is possible to define simultaneously a planar load assigned to an object for
more than one slab in the case of window selection in the 2D or 3D view.
When defining a load the user should pay attention to:

load position (only for forces not assigned to object) – for a concentrated force, it is one
point where the force is applied, for a linear load – these are two values (beginning and
end points of a load), for a planar load – these are contour coordinates
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