|
|
|
|
|
Important Note – These are descriptions to changes implemented in version 9.3 and may not reflect current program behaviour.
Concept mode was not transferring uplift point reactions from columns or other beams to supporting beams, so that these reactions did not appear in the supporting beams when transferred to beam mode, or in the reactions at the base of other columns supporting the beam. The reactions were not being accounted for in the design of the beam and supporting members.
When a column supports a beam, which in turn supports another column at the same location, and the beam is exported from concept mode to beam mode, the upper column load was not being included in the bearing design for the beam. Now the upper reaction is transferred to the beam first, then to the supporting column below.
The Live and snow loads come directly from exterior surface loading option was not available for beams loaded with a concentrated live load if no regular live loads were present.
This resulted in the concentrated load check including the concentrated live + snow load combinations, when they are supposed to be excluded as per Clause 4.1.5.5.(2) of NBC 2010.
If a regular live load was also present then the option was available and would exclude the Lc + S load combinations if selected.
In the case where a beam is designed where the maximum shear value is in the span of the member rather than at a support, the warning message in the Analysis diagram refers to another situation about notches. It has been corrected with a message stating that Sizer cannot design for the maximum shear condition.
In the Analysis diagram, the program now shows the points where the moment and shear values are zero. This is useful for multi-span beams when the moment points are allowed to be considered the terminal points of lateral support distances.
For those beam supports for which the only downward force is from self-weight, the factored reactions shown in the Reactions and Bearing table were computed using the unfactored self-weight rather than the self-weight multiplied by 1.4 as per O86-09 4.2.4.1. This problem had little practical significance because reactions due to self-weight only do not require significant bearing area.
The word "Line" has been added after "Trapezoidal" and "Triangular" load distributions, in the Load View input, to show that these types of loads are line loads and not area loads.