Mechanically graded wood materials have been added for the AWC NDS 2015 design code per Table 4C, and CSA O86-14 design code per tables 6.3.2 and 6.3.3. This specification includes the updated MEL and MSR design values.
The latest versions of RISA-3D and RISAFloor now incorporate the AWC NDS 2015. The new provisions have been implemented in RISA-3D v14.0 and RISAFloor v10.0 and can be utilized by selecting the AWC NDS-15: ASD from the Wood dropdown menu on the Codes tab of Model Settings.
The new ACI 318-14 code has been implemented into RISA-3D v14, RISAFloor v10, and RISAFoundation v8.
RISA-3D v14 introduced envelope detail reports for all material members. This means that you can see the enveloped solution (force diagrams and governing code check values) in the detail report for each member when you solve either an Envelope or Batch + Envelope solution type.
Time history analysis solves for normal analysis results (joint displacements, member forces, code checks, etc.) based on loading that varies with time. For some analyses it may be useful to view an animation of the deflected shape of the structure as a function of time. This blog topic serves as a...
You may notice discrepancies in the wood design values when comparing RISA with the NDS 2012 and older versions of the code. The American Wood Council updated the wood design values in the Addendum, which supersede the values used in the NDS 2012 and previous versions of the Design Values for Wood...
After solving a model, you will see in the Member Deflections spreadsheet the following deflection ratios:
The beams in a lateral force resisting system, such as a braced frame or moment frame, typically carry a significant axial force. In the example below (with no diaphragms) the beam (M4) carries a significant axial tension.
In the Seismic Loads dialog there is a checkbox for “Include structure weight in base shear”.
