|
|
|
|
|
Important Note – These are descriptions to changes implemented in WoodWorks Shearwalls for version 10.0 and may not reflect current program behaviour.
In the Torsional Analysis Details file, distances such as center of load, center of mass, shearline location and eccentricity have been based on a fixed co-ordinate system with its origin in the southwest corner of the structure. S->N distances are positive, and N->S are negative.
The forces F, however, are based on the direction of applied force; for N->S applied force, all values in the N->S direction are positive; for S->N applied force, they are negative.
Some users find this confusing and wish to see all values relative to the same fixed co-ordinate system. Other users, however, wish to see positive shearline forces when they are in the direction of the applied force, and this corresponds to the way they are presented in the Plan view drawing.
Accordingly, we now offer a choice in the Options settings of showing forces based on a fixed co-ordinate system, or relative to the applied force.
In the Torsional Analysis Details output report (previously part of the Log file)
In the Torsional Analysis Details, the references to accidental eccentricities have changed:
When wind loads only were on the structure, the torsional analysis section of the log file output had a repeated header line. The new Torsional Analysis Details file shows only one header in this case.
A sub-heading for wind loads mistakenly appeared under flexible seismic design. It has been removed.
It has been made clear that the explanation of the Fti calculation is an example in one direction only.
A note referred to ASD load factors, which is a USA term. This has been corrected.
The term Concentrated Load F has been changed to Total Load F, as the load is not concentrated at a location.
When a wall was underneath a gable end from a monoslope roof, the hold-down forces calculated were nonsensically large. This has been corrected.
The Design setting under Shearwall rigidity per unit length… for Shearwalls have equal rigidity has been removed from the program, as it does not correspond to any physical situation. It is a vestige of the original, less sophisticated implementation of torsional force distribution and is no longer needed.
Occasionally, after a complex set of user interface operations, wall openings could become unsorted internally and skew the distribution of forces on the shearline, also affecting shearwall design. This has been corrected.
Occasionally, one of the diaphragm force Fpx values in the Seismic Information table would show a nonsensically high number. This was a rarely occurring bug due to unusual configurations of program memory, and has been corrected.
The show menu items for center of load and center of rigidity were always disabled in Loads and Forces view, only becoming active in Load Generation view. This has been corrected and they are active in both views.
When there are no loads in a direction, such as for low-rise wind load Case A, the program showed the Center of Load in the direction without loads at the zero location, making it difficult to notice. In this case, it has now been moved to where the Center of Rigidity is located.