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Columns in Ancient Rome
Columns in Ancient Rome
Columns are perhaps the most evocative feature of ancient civilisations: sections of broken columns litter the Forum floor whilst their capitals have been reused in a wide variety of ways ranging from acting as capitals in newer buildings through to bases of tables for particularly chic interior decoration.
The ancestor of the masonry column is the wooden pillar. This would be supported by a stone base in order to keep it from rotting at the ground. The use of stone such as marble not only provided greater durability and aesthetic impact but also meant that greater heights could be achieved using a building block approach. Additional mechanical stability could be provided for by introducing one or more metal pins between sections.
Stylistic Orders of Columns in ancient Rome
The primary stylistic orders of Roman columns were inherited from the Greeks, including the simple “doric“, the scroll “ionic” and the flowery “corinthian“. The style is generally dictated by the capital at the top of the column which holds the architrave (“entablature“) above it. The application of Greek proportion clearly added monumentality to the columns and buildings which they formed a part of. Roman understanding of this is evident in their use of the three orders on the exterior of the Colosseum and theatre of Marcellus.
The Corinthian order with its Acanthus leaves first appeared in Greece though not greatly used. In ancient Rome the Corinthian order was particularly favoured and evolved into a form of its own during the Augustan age. There are some beautiful examples of Corinthian capitals in the Pantheon in Rome, shown below.
Roman half columns
The half column is a Roman invention. This is a protruding section of wall made to look like a column which has been walled in. This illusion is enhanced by the introduction of a capital and base in any of the three stylistic orders. Although this “buttress” offers some structural functions such as supporting internal cross beams and reinforcing the wall itself it is really aimed as an aesthetic device. A good example of this can be found on the exterior of the Colosseum.
This is made evident in examples such as the small temple to Virile Fortune, in the Forum Boarium by the Tiber. In this case the temple gives the impression of being surrounded by the habitual portico of columns.
Roman monolithic columns
The next columns in size are monolithic – ie made of one single piece. The purpose of this was not only functional stability but also aesthetic. There is little doubt that from an aesthetic point of view a single monolith is far more overbearing than a composite column. These monoliths were generally (if not exclusively) of granite or marble because these materials were best able to withstand the tensile forces they would be subjected to during transport and erection on site (through specifically built hoists). A good example of this type of column is to be found holding up the porch of the Pantheon. Each of these granite columns is some 35ft (11m) in height and 5ft (1.5m) in diameter at the bottom. The (Corinthian styled) capitol and base provide some extra height to the units.
Roman columns in sections
The vast majority Columns are made of a number of sections. This was clearly the most convenient means of cutting and transporting the blocks as well as ensuring their integrity during transport. The problem is the loss in stability under earthquake for example, especially when there is a high ratio between height and thickness of the column. Added stability could be achieved by introducing metal bolts between the sections. The bolts would be cemented into place with molten lead.
Decorative elements such as the leaves in the capitol or the channels along the body of the column were hand sculpted. It was not unusual for the aesthetic work to be undertaken after the column had been put in place and could sometimes take a number of years after the building’s completion.
Columns of brick and mortar
A simpler and cheaper means of making columns was with brick or stone and mortar. In the case of brick columns the individual bricks would be specially shaped into something akin to a petal. The finished column would then covered in plaster and brought to the required level of finish to appear like a marble column.
It seems appropriate to finish off by noting that the last addition to the Imperial Forum was a column placed in the Forum’s central square in honour of Emperor Phocas in the year 608AD. Its purpose was and still is to commemorate the emperor’s donation of the Pantheon to the Christian church. Given that the Roman empire of the West had already fallen over a century earlier we can understand the relative financial and technical poverty of the times which explains why the column was in fact taken from an older monument.
These two works of art had little functional purpose other than acting as a monumental tomb for their respective owners. The tomb cell was in the base cavity whilst the commemorative bit was performed by the story-telling sculptural relief which scrolls its way up the column and by a statue of the emperor placed at the top, not to mention the monumental size of the column. The size of the columns is sufficient to allow a small staircase to spiral its way up the centre. A number of windows were dug into the sides to allow light through although the fact that they cut straight through the art work suggests that they were an afterthought. The columns were made of a number of sections which in themselves are huge and one wonders at the skill required to place one section onto the next. The sculptural work was done on scaffolding, once the column had been erected.
There were other important commemorative columns also, erected in important public locations such as the Roman Forum. For example
the Five columns monument aka of the Decennalia – These 5 columns were erected on or behind the “rostra” in the Forum around the beginning of the 4th Century AD. They commemorated the rebuilding of the Forum and ten years of Tetrarchy: 2 Emperors and 2 Caesars ruling the western and eastern sides of the empire. The fifth column was dedicated to Jupiter.
The column of Phocas -also erected in the Forum in commemoration of his visit to the city and in thanks for his donation of the Pantheon to the church. An image is shown below. This was the last column to be erected in the Roman Forum.
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