Pantheon Roof Structure

A rectangular vestibule links the porch to the rotunda which is under a coffered concrete dome with a central opening oculus to the sky.

Pantheon roof structure.

To provide details on this complex configuration the following figures show the building with its two ring foundation voids in the walls and the step ring and coffer arrangement in the dome. Sunlight streaming through the oculus illuminates the pantheon rotunda. The facade like that of the roman pantheon is formed by a porch of corinthian columns and triangular pediment attached to the ends of the eastern arm. The ceiling of the pantheon dome has five symmetrical rows of 28 coffers sunken panels and a round oculus opening at the center.

Panthéon the panthéon paris. Most historians however claim that emperor marcus vipsanius agrippa built the first pantheon in 27 bc a rectilinear t shaped structure 144 feet by 66 feet 44m x 20m with masonry walls and a pitched timber roof. This was the first element of the building to be constructed using the roman concrete opus caementicium technique. It burned in the great fire of 80 ad was rebuilt by emperor domitian but was struck by lightening and burned again in 110 ad.

Pantheon sections left picture ward perkins 6 right picture. With an age of almost two thousand years old the pantheon is the world s largest unreinforced concrete dome structure with the height and the diameter of the interior being the same dimension 43 3 meters or 142 feet. The panthéon is a cruciform building with a high dome over the crossing and lower saucer shaped domes covered by a sloping roof over the four arms. The structure of the rotonda the rotunda italian for round is the name for the main central structure of the pantheon and it refers to the pantheon s distinctive cylindrical shape.

Almost two thousand years after it was built the pantheon s dome is still the world s largest unreinforced concrete dome. That is correct there is no charge to visit and enter this historical building.