fracturing an object after a set amount of time

[adrian No.370135]

(note: early stage modeling, i want to learn the method before continuing.)

Hi.
I have a scene where a ball bounces down a set of stairs, and eventually reaches the floor and wall.
I want the ball to be rigid all the way down, and then fracture when it makes contact with the floor.
how can i achieve this?
I have Catastrophe installed, i can download Thrausi, and Nitroblast is on my harddrive aswell.
Cinema4D R14 Studio is used.

thanks in advance.