I am not sure if it's your exact requirement to install Apache by hand, but I am pretty sure you can use your distribution's package manager. (RPM as far as I know for Red Hat).
If you want to install by hand. Redownload the source. Follow standard installation procedure. Hunt for errors
. It may have happened, that your installation crashed in the middle. Also, how big is your apache directory?
Edit: I see you've posted another post during my time of writing, so you can skip this.