In the same place that Kosta describes in 5,208. While St. Augustine is much admired in the West and less so in the East, his view on original sin is at times referred to as "augistinianism" and is not dogmatic. No, Original sin in itself does not condemn to hell. In fact, I doubt if Augustine in fact taught that. He wrote so much that at times he can be read in contradiction to the totality of his views. If he really taught that originial sin condemns to hell, he would not have developed the doctrine of Limbo that teaches differently.
I would suggest we look closely at the following text:
Please note Paul states that all sinned through Adam. We are not simply tainted with the desire to do evil. According to Rom 5:12 we have actually sinned, which is the way God views the matter. God charged Adam's sin to all humanity. All men are guilty of the sin of Adam and therefore all men die.
Sin is what condemns us to hell. Original sin does mean that all are condemned to hell. Death is the evidence of us being sinners, not simply that we are tainted with a desire to sin. Otherwise premature babies would never die since, theoretically, they haven't sinned.