Layout using The Semantic Grid System (original)

header
flash
info 1
info 2
info 3
info 4
main
sidebar
triptych 1
triptych 2
triptych 3
footer

Push

pushed
pushed

Pull(-left) and pull-right, outside grid

pull(-left)
full width
pull-right

Nested columns

column
column
column
nested block
nested block
nested block
nested block
column