From the past to the present

Architecture has evolved throughout the years.During these years has been tried to define the relationship between building technology and architectural aesthetics.The two fold essence of architecture are abled by two important components: the physical structure, which obeys objective requirements and the aesthetics part ,which gives us an emotion of a subjective nature.This relationship and the right mixture of these two components places architecture in a field completely apart from the other arts.
Pier Luigi Nevri ,an italian architect,engineer and builder,in his book "Aesthetics and Technology in building" has analysed architectural designs and components throughout history.He ,as a builder judges building technologies and methods of construction and as a non technician analyses the aesthetic aspect as a work of art.Good Technology is a necessary but not a sufficient condition for Good Architecture.The conditions to building correctly are economic efficiency,functionality,stability and durability.Each one of them has their own importance.
-Stability-the building should be stable otherwise we have not build correctly
-Durability- it should be resistant to different external elements (fire ,earthquake etc)
-The other two conditions are result of proper proportioning of sizes of spaces,relaionship of spaces,richness of ornament,preciousness of materials.
Nervi says that the relationship between Building technology and Aesthetic Appearance are present in building from the past to the present.This relationship he presents with examples from Greek and Egyptian,Roman architecture.Greeks and Egyptians were limited by marble and stone materials.Different from Greeks and Egyptians ,in Roman architecture thrusting roofs plus the introduction of powerful horizontal forces made possible internal shapes and spaces.An example is the reconstruction of the interior of the Basilica of Maxentius.The relation between  Aesthestics and Technology is shown during the Gothic period in Gothic Cathedrals.
From the past to present ,architecture is different.This rrlationship has evolved in a aesthetical way.Some modern architectural building are: Firth of Forth,Bridge,Eiffel Tower,etc.
To sum up the relationship between the technology and aesthetics that Nevri found in the great buildings of the past has remained intact.