what would ayn rand suggest a society does for those that can't take care of themselves?

I can only answer based upon my reading (and limited understanding I might add) of Ayn Rand's works. In The Virtue of Selfishness, Ms. Rand states that we are best served by being self-centered. Ms. Rand is quick to explain the difference between the true meaning of selfishness and the negative perception that the word has been given. It means that we are best served by looking out for our best interests. It is in our best interests to do for others if doing for others makes us happy. As Egoist_Capitalist states, there are many Objectivists out there who believe in altruism. They don't believe in altruism for the sake of altruism, and they don't believe that those who have should be expected to provide for those who have not. They merely offer what assistance that they are able in order to help, because helping provides them with personal satisfaction. In an perfect objectivist world, I would hazard to guess that the number of those most in need would be cut drastically. If we concern ourselves with our own welfare and the welfare of those we love, if we strive to be the best that we can be, if we achieve satisfaction by living by our standards, then would it not be a world in which people are better off for the most part? I also tend to believe that as with the character of Howard Roarke in The Fountainhead, those who live their lives and better themselves without concerning themselves with what others do unless it directly affects them will achieve their goals and acheive satisfaction. How many people spend too much time concerning themselves with what everyone else thinks, believes, and does, to their own digression? I think Ms. Rand would suggest that the members of any society take care of themselves, individually. If someone is unable, due to physical limitations or what have you, then they will be taken care of by those who are able and willing to do so.

They would depend on private charity. The choice shouldn't be between enslavement & people rotting in the streets. I know many Objectivists that are charitable.

probably eat them. Nasty person, that!