Posts by Brad Crumb
Change Notification: Lambda Values for Beam Density and Shear
Deviating from the CSA Standards to better reflect practical design
While the existing implementation for MASS Versions 3.0 ...
Bug Notification: Drift Values instead of Elastic Deflections used for Inelastic Rotational Demand
The current MASS approach in Version 4.0 means that linear elastic deflections are over-corrected in a way that largely overestimates d...
Bug Notification: Seismic reinforcement spacings applied to all shear walls resisting an earthquake load
While most seismic requirements are triggered by the application of an earthquake load, MASS is too stringent on it's reinforcement spa...
Notification: Seismic Shear Forces Amplification Change for Elements Above Critical Section
The storey-by-storey design approach currently in MASS can excessively amplify shear forces beyond expected results
In cases...
Bug Notification: Non-Seismic Lateral Companion Loads Amplified for Seismic Effects
Be aware of this for shear wall designs resisting lateral earth pressures
In cases where a bug or other issue is found in th...
Version 4.0 Feature Spotlight: Ductility Verification
Moderately Ductile and Ductile shear walls can now be designed within MASS to satisfy the ductility verification (required by CSA S304-...
Version 4.0 Feature Spotlight: Simplified National Building Code Seismic Design
Added to the 2015 National Building Code of Canada is a new design pathway that can be used for areas with very low seismic hazard leve...
Bug Notification: Out-of-Plane Shear Resistance checked only at location of maximum shear
While not always calculated at the critical location of a wall, out-of-plane walls are typically governed by flexure.
In cas...
Known Bugs in MASS
Bugs are found from time to time and in our effort to be trustworthy and transparent, they are posted here as well as appearing on the ...
MASS Version 4.0 is now available – adds multi-storey design and more earthquake design options
Version 4.0 adds to the scope of what MASS is capable of handling
It's real, and it's spectacular! We are very excited to anno...