MoverZ is 100% correct as far as Snubbers used for wind loads is concerned. They require a sudden acceleration such as steam / water hammer, seismic loads or PSV firing loads in order to lock.

In lieu of these expensive devices (Snubbers) boxed guides designed and placed strategically are always a better solution though more difficult to achieve from the designers view point.

As for Mover Zs reference to Autopipe I am unsure what the intent is to that reference. Ahh I see now MoverZ is not the source of the Autopipe reference its the user above who apparently is visiting this forum for general non CAESAR II commentary.....

My suggestion for getting the benefit of learning from an experienced competent designer still stands as well.