Would you like a full or a specific destruction setup (e.g., a crumbling pillar, a car crash)?
// 4. Add a passive ground plane (select a polygon plane) // Select the ground plane, then: pdiMakePassive;
It sounds like you're asking for a (script, setup, or explanation) of Maya + Pulldownit — a popular dynamic fracturing and destruction plugin.
// 2. Get all fractured pieces (they are grouped) string $pieces[] = listRelatives -children ($wall + "_pdiFracture_grp") ;
// 3. Make them dynamic rigid bodies for ($p in $pieces) pdiMakeDynamic $p;