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Tag Archives: Seismic Design

21 Apr

Bug Notification, Technical

Bug Notification: Drift Values instead of Elastic Deflections used for Inelastic Rotational Demand

April 21, 2021
Posted by Brad Crumb
0 comments

The current MASS approach in Version 4.0 means that linear elastic deflections are over-corrected in a way that largely overestimates d...

09 Mar

Bug Notification

Notification: Seismic Shear Forces Amplification Change for Elements Above Critical Section

June 17, 2021
Posted by Brad Crumb
0 comments

The storey-by-storey design approach currently in MASS can excessively amplify shear forces beyond expected results In cases...

25 May

Technical

Why doesn’t MASS consider Type 6 Structural Irregularities?

August 13, 2020
Posted by Brad Crumb
1 comment

With MASS Version 4.0 moving into Multi-Storey Shear Wall design, why doesn't the software check for something that seems squarely with...

20 May

Technical

Failed the Ductility Verification? How to Pick a Higher εmu, the Maximum Compressive Strain

July 27, 2020
Posted by Brad Crumb
1 comment

The addition of boundary elements to MASS Version 4 (as well as CSA S304-14) means that failing a ductility verification is not the end...

01 Apr

Technical

Why is the Factored Shear Force Scaled Up for Seismic Considerations on a Shear Wall Design?

April 23, 2021
Posted by Brad Crumb
1 comment

Explaining these clauses and how they are applied Questions about the seismic effects on shear resistance? Click here for a ...

01 Apr

Technical

Checking Vf,seismic for a Multi-Storey Shear Wall

May 12, 2020
Posted by Brad Crumb
0 comments

Taking seismic effects into account in MASS can be confusing. Seeing factored shear forces scaled up by over 100% in some cases may see...

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Conventional Construction Comprehensive Analysis Example

Change Notification: Axial Load Limit for Conventional Construction Walls

MASS Version 4.2 Release Notification

Deflection Check for Out-of-Plane Walls

Change Notification: Lambda Values for Beam Density and Shear

Bug Notification: Drift Values instead of Elastic Deflections used for Inelastic Rotational Demand

Bug Notification: Seismic reinforcement spacings applied to all shear walls resisting an earthquake load

Notification: Seismic Shear Forces Amplification Change for Elements Above Critical Section

Bug Notification: Non-Seismic Lateral Companion Loads Amplified for Seismic Effects

Tag Archives: Seismic Design

Bug Notification: Drift Values instead of Elastic Deflections used for Inelastic Rotational Demand

Notification: Seismic Shear Forces Amplification Change for Elements Above Critical Section

Why doesn’t MASS consider Type 6 Structural Irregularities?

Failed the Ductility Verification? How to Pick a Higher εmu, the Maximum Compressive Strain

Why is the Factored Shear Force Scaled Up for Seismic Considerations on a Shear Wall Design?

Checking Vf,seismic for a Multi-Storey Shear Wall

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