This feature allows you to specify an absolute value for deflection limit as well as the usual proportion of beam length. This is often required for example for special types of cladding on wall or floor surfaces which cannot withstand more than a certain absolute deflection.
It applies to all member types and all material types.
In the Deflection box of the Beam Load View, there is a checkbox with label saying
and <=
followed an edit box giving the maximum absolute total deflection value.
For each span the program compare thes span ratio distance to the absolute distance when determining the design value used for both live deflection and total loads on that span, and it will use the absolute or span ratio deflection for deflection design according to which one was dominant.
If the absolute deflection was dominant for a particular span, the program indicates so with
(absolute) in the output.