“Buttressing”
Pronunciation: /ˈbʌtrəsɪŋ/ (BUT-rə-sing)
Part of Speech: Noun
Quick Definition: A projecting support built into or against a wall to give stability and reinforce against lateral forces.
General Use: “The master mason knew that the huge stone ceiling vaults required substantial external Buttressing. Consequently, a series of heavy piers were built along the cathedral’s outer walls to counter the immense thrust.”
The Gothic Flying Buttress – The most monumental and artistic application is the flying buttress. This structure is not a solid mass but an arched support that transmits the outward thrust of a high vault across an open space to a massive external pier. This innovation defined the high Gothic style.
Invisible Support – While the most visible examples are external, the hidden truth is that many structural walls use internal Buttressing—thickening the wall at strategic points where internal arches or beams deliver force. This makes the support monumental but unseen.
Foundation Stability – Effective Buttressing requires monumental stability at its base. If the ground or the foundation under the buttress settles or shifts, the entire structural equilibrium of the supported wall is lost, often leading to collapse.
Did you know?
The need for Buttressing is directly proportional to the height and span of the vault or roof structure being supported. Without it, the weight of the roof and ceiling, combined with wind pressure, would push the walls outward. Therefore, the development of sophisticated Buttressing allowed medieval architects to achieve previously unimaginable verticality and interior space.
Buttressing Definition (Primary Context)
Buttressing is the action or function of a buttress. There are several forms of the buttress, varying in complexity:
Flying Buttress: The most advanced form, consisting of a half-arch. This transfers the lateral thrust from a high point on the wall over a lower aisle roof to a heavy pier.
Simple Buttress: A solid, continuous mass of masonry built against the wall’s exterior.
Angle Buttress: Located at the corner of a building, often wrapping around both faces of the corner to counter diagonal thrust.
Setback Buttress: Similar to the angle buttress, but stepped back from the corner, providing a slightly different distribution of force.
Old French: boter (to push, thrust), referring to the support’s function of resisting force.
Buttress, Prop, Support, Spur, Reinforcement.
Cantilever (a self-supporting horizontal projection), Arch (creates the thrust), Vault (creates the thrust).
Structure, Architecture, Masonry, Support System.
Historical Context of Buttressing
Early forms of Buttressing were used in Roman architecture to stabilize the heavy vaults of basilicas and baths. However, the technique was truly perfected during the Romanesque and, most notably, the Gothic periods in Europe (12th to 16th centuries). The invention of the Flying Buttress was a monumental technological breakthrough. It allowed the heavy, load-bearing walls of Romanesque architecture to be replaced by skeletal structures and huge stained-glass windows, defining the Gothic aesthetic.
Social Context of Buttressing
In medieval Europe, the sheer scale of the Buttressing employed in cathedral construction represented the monumental power and wealth of the Church and the city that sponsored the building. The ability to fund the immense labor and material required to build such supports was a public testament to divine favor and civic pride. Therefore, the Buttressing was not just structural; it was a visible symbol of the community’s dedication to its faith and its ability to achieve engineering mastery.
| Area of Influence | Significance and Impact |
| Structural Integrity | It ensures the long-term stability of the building. This counters the constant lateral pressure from heavy stone vaults. |
| Aesthetic Design | The flying buttress allowed walls to be opened up. This enabled the installation of monumental stained-glass windows. |
| Engineering Innovation | The move from solid walls to external supports represents a monumental shift in architectural and structural theory. |
| Verticality | Sophisticated Buttressing allowed builders to achieve unprecedented height in construction. This directed the eye upward toward heaven. |
Terms Related to Buttressing
The study of Buttressing involves terminology related to forces, loads, and supporting structures in architecture. This provides essential context for structural analysis. This provides a clearer view of the technical framework surrounding stone construction.
| Term/Concept | Description and Relevance |
| Lateral Thrust | The outward horizontal force. This is created by an arch or vault. This is the primary force countered by Buttressing. |
| Flying Buttress | An arched support. This transfers the lateral thrust of a nave vault over an aisle roof to an exterior pier. |
| Vault | An arched ceiling or roof. This is the heavy structural element that necessitates Buttressing. |
| Pier | A solid masonry support, larger than a column. This often serves as the terminal structure for the Flying Buttress. |
| Nave | The central, high part of a church. Its high vaults require the most intensive Buttressing. |
| Dead Load | The static, constant weight of the building materials themselves. This weight must be managed by the Buttressing system. |
Sources & Credits
Sources
- Fitchen, J. “The Construction of Gothic Cathedrals: A Study of Medieval Vaulting.” University of Chicago Press, 1981. [Historical source]
- Mark, R. “Light, Wind, and Structure: The Mystery of the Master Builders.” MIT Press, 1990. [Historical source]
- “Buttress.” Dictionary of Architecture and Construction. [Definition site]
- The Metropolitan Museum of Art. “Gothic Architecture: The Flying Buttress.” Heilbrunn Timeline. [Museum site]
- Viollet-le-Duc, E. “Dictionnaire raisonné de l’architecture française du XIe au XVIe siècle.” (French Architectural Dictionary), 1854-1868. [Historical source]
