G humanBuildPoints

Usage
This variable changes the maximum number of Build Points that the human team can use.

Setting it to 0 or something not-a-number will prevent the human team from building anything (other than the reactor etc), although old buildings over the limit will not be removed.

If the remaining build points are over 999 then the client will just display 999 left, and setting this cvar to large numbers is used by some servers to provide the illusion of "unlimited" build points.