Rome Aquaducts
Katherine W Rinne, "Aquae Urbis Romae: the Waters of the City of Rome" at www3.iath.virginia.edu/waters.



Porte maggiore: Super imposed aqueducts 
to set-1 a very interesting website on aqueducts: http://www.cs.uu.nl/people/wilke/index.html
Roman construction methods
build your own aqueduct: http://www.pbs.org/wgbh/nova/lostempires/roman/aqueduct.html