In the time of the Emperor Augustus (Caesar Dīvī Fīlius Augustus) The architecture of that time was called classical by combining Greek and Etruscan elements, mainly at the time of "the architect of Rome" architecture was to focus Mainly in serving the state and being functional, rather than adorning or being beautiful. Cheap and hard (solid) materials such as brick, concrete, ashlar etc were used in their constructions, the exterior was clad with stone or marble plates to give them an aesthetic touch.
They created four orders in the rig (order and position) of the Using materials:
Opus reticulatum: Cladding based on square tesserae or chess like forming a network with irregular pieces.
Opus Testaceum or Latericium: They are tested bricks (cooked) with rope and blight.
Opus incertum: Irregular stone blocks with ashlars (carved stones) only in corners with irregular hanks in the middle and in the corners square stones pillars.
Opus quadratum: Blocks joined with mortar with forms of parallelepipeds.
(Opus: Latin work)
ARA PACIS
Tecnique