As a reminder, our office will be closed Dec. 31 for the New Years Day holiday. Normal business hours will resume Monday, Jan. 3.

When a model is loaded, it deflects. The deflections in the members of the model may induce secondary moments due to the fact that the ends of the member may no longer be vertical in the deflected position.

In RISAFloor, the deck edge (also known as Slab Edge) is selected as Rigid or Flexible. In a building that needs to be designed for both, start with Flexible.

Our office will be closed from noon Pacific Dec. 23 and Dec. 24. We will also be closed Dec. 31. We’ll maintain normal business hours Dec. 27-30.

Continuous tiedown systems are used to help resist overturning forces generated by lateral loads, and can be estimated in RISA-3D using the hold-down database and the strap forces.