Western and modern architecture

In short

This topic traces the development of building form in the West from ancient Egypt and Greece through Rome, the medieval church, the Renaissance and the Industrial Revolution to the Modern Movement and its aftermath, and then follows modernism into India after 1947. It matters because the vocabulary of practice — order, module, proportion, span, structure-as-expression, free plan, curtain wall — was fixed by these periods, and because conservation, adaptive reuse and heritage-precinct work in Indian cities deals directly with Victorian Gothic, Indo-Saracenic, Art Deco and early modern fabric. It is examined in B.Arch History of Architecture papers (usually two or three semesters), in GATE Architecture and Planning (AR) Part A, and in NATA/entrance general awareness. Employers test it in design-studio portfolio reviews, in conservation and heritage-consultancy roles (INTACH, ASI-empanelled firms, DRONAH), and in interviews at large practices where precedent literacy is expected.

Explained

Ancient and classical: Egypt, Greece, Rome

• Egypt (c. 3000–30 BCE): mastaba → step pyramid (Djoser, Saqqara) → true pyramid (Khufu, Giza, c. 2560 BCE, base ≈ 230 m, original height ≈ 146.6 m). Trabeated (post-and-beam) stone, massive walls battered inward, hypostyle halls (Karnak), lotus/papyrus/palm capitals, axial processional planning.
• Mesopotamia: sun-dried brick, ziggurats (Ur), no stone or timber — hence the arch and vault appear early in brick.
• Greece (c. 700–100 BCE): temple as a refined trabeated object. Plan types by portico — *distyle in antis, prostyle, amphiprostyle, peripteral, dipteral*; by column count — *hexastyle* (6), *octastyle* (8). Parts: stylobate, stereobate, column (base–shaft–capital), architrave, frieze, cornice (together the entablature), pediment, tympanum.
• Three Greek orders: Doric (no base, 20 flutes with sharp arris, plain cushion capital, triglyph-and-metope frieze, mutules), Ionic (moulded base, volute capital, continuous sculptured frieze, dentils), Corinthian (acanthus-leaf bell capital, tallest and slenderest). Romans added Tuscan and Composite — the "five orders" codified by Serlio and Vignola in the 16th century.
• Optical refinements: entasis (slight convex swelling of the shaft), tapering (diminution), upward curvature of the stylobate, inward lean and corner-column thickening, angle contraction of the Doric corner — all to correct visual distortion. Parthenon (447–432 BCE, Iktinos and Kallikrates, sculpture by Phidias), 8 × 17 columns; Erechtheion (Ionic, caryatid porch); Temple of Olympian Zeus (Corinthian).
• Rome (c. 200 BCE–400 CE): the shift from trabeated to arcuated construction, plus opus caementicium (lime–pozzolana concrete) faced in brick or stone. Vocabulary: semicircular arch, barrel vault, groin (cross) vault, hemispherical dome, coffering, superimposed orders, engaged column and pilaster, the arcade with applied order (Colosseum, 70–80 CE: Tuscan–Ionic–Corinthian–Composite pilasters).
• Pantheon (rebuilt c. 118–128 CE, Hadrian): unreinforced concrete dome of 43.3 m span, equal to its internal height, graded aggregate (travertine at base to pumice at crown), stepped rings, coffers and an 8.2 m open oculus. Other types: basilica, thermae (Baths of Caracalla, Diocletian), forum, amphitheatre, aqueduct, insula, triumphal arch.
• Vitruvius, *De Architectura* (ten books, 1st century BCE): the only surviving ancient treatise; firmitas, utilitas, venustas (strength, utility, beauty) and the doctrine of symmetry, eurythmy, propriety and economy.

Medieval: Early Christian, Byzantine, Romanesque, Gothic

• Early Christian (4th–6th c.): the Roman basilica reused for worship — atrium, narthex, nave with aisles, clerestory, triumphal arch, apse, timber trussed roof; campanile and baptistery as separate elements (Old St Peter's, Santa Sabina).
• Byzantine (from 330 CE): centralised and Greek-cross plans, domes on pendentives (spherical triangles transferring a circular dome onto a square bay) and squinches (corner arches/niches), brick construction, mosaic and marble revetment, nave arcades on stilted arches. Hagia Sophia, Constantinople (532–537, Anthemius of Tralles and Isidoros of Miletus): dome of about 31–32 m diameter on pendentives, flanked by half-domes, a ring of windows at the dome base.
• Romanesque (c. 1000–1150): semicircular arch, thick walls, small openings, massive piers, barrel and groin vaults, twin western towers, the bay system, blind arcading, apse-and-ambulatory with radiating chapels, pilgrimage plans. Examples: Pisa cathedral group, Durham (early rib vaults), Speyer, St Sernin Toulouse.
• Gothic (c. 1140–1500): structure reduced to a skeleton. The four devices work together — pointed arch (lower horizontal thrust, variable rise for a fixed span), rib vault (loads concentrated at points), flying buttress (thrust carried over the aisle to an external pier and pinnacle), and the resulting large tracery window with stained glass. Also: compound pier with shafts, triforium, clerestory, rose window, crocket, finial, gargoyle, pinnacle weighting the buttress, vault types (quadripartite, sexpartite, fan).
• Phases — France: Early Gothic (Saint-Denis ambulatory, 1144), High Gothic (Chartres, Reims, Amiens), Rayonnant, Flamboyant. England: Early English (lancet), Decorated (geometric then curvilinear tracery), Perpendicular (fan vaults, King's College Chapel). Italian Gothic stays broader, flatter, polychrome (Siena, Milan).

Renaissance, Baroque, Neoclassical

• Renaissance (15th–16th c., Florence then Rome): revival of classical orders on humanist, mathematical proportion; linear perspective (Brunelleschi, Alberti); centrally planned churches; rusticated palazzo with cornice and piano nobile.
  • Brunelleschi: dome of Florence cathedral (1420–36), 45 m span, double shell, herringbone brickwork, built without full centering; Ospedale degli Innocenti; Pazzi Chapel.
  • Alberti: *De re aedificatoria*; Santa Maria Novella façade; Sant'Andrea Mantua. Bramante: Tempietto. Michelangelo: St Peter's dome, Laurentian Library, giant order. Palladio: *I Quattro Libri dell'Architettura* (1570), Villa Rotonda, Villa Barbaro, Il Redentore — the source of Palladianism and of the colonial classicism later built across British India.
• Mannerism: deliberate breaking of classical rules (Palazzo del Te, Giulio Romano).
• Baroque (17th–mid 18th c.): movement, curvature, theatrical light, fusion of architecture–sculpture–painting, oval and interpenetrating geometries. Bernini (St Peter's piazza colonnade, baldacchino), Borromini (San Carlo alle Quattro Fontane, Sant'Ivo), Guarini; in France the classicising Baroque of Versailles; Rococo as its lighter, decorative late phase.
• Neoclassicism (c. 1750–1850): archaeology (Pompeii, Herculaneum) and Winckelmann's writings produce a sober, correct classicism; Greek Revival; the visionary geometric projects of Boullée and Ledoux; Schinkel in Berlin, Soane in London. In India this is the idiom of colonial public building — Madras and Calcutta classicism, and later Lutyens and Baker's New Delhi (1912–31, Rashtrapati Bhavan), with Victorian Gothic (CSMT by F. W. Stevens, 1878–88; Rajabai Clock Tower) and Indo-Saracenic hybrids (Victoria Memorial, Kolkata, William Emerson, completed 1921) alongside.

Industrial Revolution and the precursors of modernism

• New materials and processes: cast iron, wrought iron, then steel (Bessemer, 1856); plate glass; Portland cement (patented 1824) and reinforced concrete (Monier, Hennebique); the safety elevator (Otis, 1857); prefabrication and standardisation.
• Engineering landmarks: Iron Bridge Coalbrookdale (1779); Crystal Palace (Joseph Paxton, 1851) — prefabricated iron and glass on a 24-ft module, erected in months; railway sheds (St Pancras); Eiffel Tower (1889, 300 m as built).
• Nineteenth-century revivalism and the "battle of the styles": Pugin and Ruskin argue for Gothic as moral and structural truth; eclecticism and the Beaux-Arts system train composition in plan (parti, axis, enfilade).
• Arts and Crafts (from 1860s): William Morris and Philip Webb's Red House (1859) — honest materials, craft, vernacular informality, rejection of machine ornament.
• Art Nouveau (c. 1890–1910): organic line and total design — Horta (Brussels), Guimard (Paris Métro), Gaudí (Sagrada Família, Casa Milà, catenary and ruled-surface geometry), Mackintosh (Glasgow School of Art), Jugendstil, and the Vienna Secession (Otto Wagner, Olbrich) moving towards abstraction.
• Chicago School (1880s–1900s): the tall office building made possible by the steel skeleton, fireproofing, elevators and the curtain wall carried on spandrel beams. Home Insurance Building (W. L. B. Jenney, 1885); Louis Sullivan — "form ever follows function", the base–shaft–attic tripartite tall building and organic ornament.
• Doctrine: Adolf Loos, *Ornament and Crime* (1908 lecture); Deutscher Werkbund and Behrens' AEG Turbine Factory (1909); Futurism (Sant'Elia), Expressionism (Mendelsohn's Einstein Tower), Russian Constructivism (Tatlin's monument project, Melnikov), De Stijl (Rietveld Schröder House, 1924).

The Modern Movement and its masters

• Bauhaus: founded Weimar, 1919, by Walter Gropius (merging art academy and crafts school); moved to Dessau in 1925 — Gropius's own building with its glass curtain wall and pinwheel plan; directed by Hannes Meyer (1928) then Mies van der Rohe (1930); closed 1933. Legacy: the preliminary course, workshop teaching, unity of art and industrial production.
• Le Corbusier: *Vers une architecture* (1923), "a house is a machine for living in". Five Points of a New Architecture (1926–27): (1) pilotis, (2) free plan, (3) free façade, (4) ribbon/strip window, (5) roof garden — demonstrated at Villa Savoye (1928–31). Dom-Ino frame; Modulor proportional system (1948); urban projects Ville Contemporaine, Plan Voisin, Ville Radieuse; later plastic, sculptural béton brut (Ronchamp, La Tourette, Marseille). CIAM (1928) and the Athens Charter (1933) with its four functions — dwelling, work, recreation, circulation.
• Mies van der Rohe: "less is more", "God is in the details"; Barcelona Pavilion (1929, free-flowing planes, travertine, onyx, chrome columns), Farnsworth House (1951), Seagram Building (1958), Crown Hall IIT — skin-and-bones steel-and-glass, universal space, the expressed I-section mullion.
• Frank Lloyd Wright: organic architecture — Prairie houses (Robie House, 1910) with cantilevered horizontals and the destroyed box; Fallingwater (1935–37); Johnson Wax; Usonian houses; Guggenheim Museum spiral (1959); "the nature of materials".
• Alvar Aalto: humanist, site- and material-sensitive modernism (Paimio Sanatorium, Villa Mairea, Säynätsalo). Oscar Niemeyer: sculptural concrete, Brasília.
• International Style: term from the 1932 MoMA exhibition (Hitchcock and Johnson) — volume over mass, regularity over axial symmetry, no applied ornament. Its post-war global spread is what reaches India and the Gulf.

After 1945: Brutalism, Postmodernism, Deconstructivism, High-tech, green

• Brutalism (1950s–70s): *béton brut* — exposed board-marked concrete, massive legible form, service-and-structure honesty. Unité d'Habitation, Marseille (1947–52, 337 apartments, interlocking section, roof as public terrace); Alison and Peter Smithson; Boston City Hall; much Indian institutional work of the 1960s–80s.
• Louis Kahn: monumental masonry and concrete, "served and servant spaces", light as the maker of room, the ruin wrapped around the glass — Salk Institute, Kimbell Art Museum, National Assembly Dhaka, IIM Ahmedabad (1962–74).
• Team 10 / critiques of CIAM: mat-building, cluster, "as found"; Jane Jacobs' attack on urban renewal (1961); Aldo van Eyck's structuralism.
• Postmodernism (1966–1990s): Robert Venturi, *Complexity and Contradiction in Architecture* (1966) — "less is a bore"; *Learning from Las Vegas* (1972) — the duck versus the decorated shed; Charles Jencks dated modernism's death to the Pruitt-Igoe demolition (1972). Irony, historical quotation, colour, context: Michael Graves' Portland Building, Philip Johnson's AT&T Building (1984), Charles Moore's Piazza d'Italia, Aldo Rossi's rationalist typology, Robert Stern.
• Deconstructivism (from the 1988 MoMA exhibition): fragmentation, non-orthogonal geometry, instability — Gehry (Bilbao Guggenheim, 1997, titanium and CATIA-driven surfaces), Libeskind (Jewish Museum Berlin), Zaha Hadid, Eisenman, Koolhaas/OMA (*Delirious New York*), Tschumi (Parc de la Villette).
• High-tech / structural expressionism: Centre Pompidou (Piano and Rogers, 1977 — services and structure outside), Lloyd's of London, HSBC Hong Kong (Foster), Sainsbury Centre.
• Critical regionalism (Kenneth Frampton, 1983): resisting placeless modernism through climate, topography, light and tectonics — the frame most used to read Doshi, Correa, Geoffrey Bawa and Studio Mumbai.
• Sustainability and the digital present: parametric and BIM-driven design, performance-based façades; rating systems LEED (1998), and in India GRIHA (TERI, adopted nationally) and IGBC (CII); the Energy Conservation and Sustainable Building Code (ECSBC 2024), which succeeded ECBC 2017 and is adopted by States in their own versions, and the residential code Eco-Niwas Samhita under the Energy Conservation Act, 2001 (amended 2022); NBC 2016 Part 11 on sustainability.

Modernism in India and the heritage framework

• Chandigarh (from 1951): master plan begun by Albert Mayer and Matthew Nowicki, carried forward by Le Corbusier with Pierre Jeanneret, Jane Drew and Maxwell Fry — sector grid of about 800 × 1200 m, 7V road hierarchy, the Capitol Complex (Secretariat, High Court, Assembly, Open Hand). The Capitol Complex was inscribed on the UNESCO World Heritage List in 2016 as part of "The Architectural Work of Le Corbusier". His Ahmedabad works: Mill Owners' Association Building, Villa Sarabhai, Villa Shodhan, Sanskar Kendra.
• First generation: Habib Rahman, Achyut Kanvinde (CSIR labs, IIT Kanpur), Otto Koenigsberger (Bhubaneswar, Jamshedpur), Joseph Allen Stein (India International Centre, Ford Foundation, "Steinabad" in Lodi Estate), Laurie Baker (cost-effective brick architecture, Centre for Development Studies, Thiruvananthapuram; COSTFORD).
• Second generation: Charles Correa (Gandhi Smarak Sangrahalaya, Kanchanjunga Apartments, Jawahar Kala Kendra, Navi Mumbai plan; "form follows climate", open-to-sky space, tube house), B. V. Doshi (CEPT, Sangath, Aranya low-cost housing, Indore — Aga Khan Award 1995; Pritzker Prize 2018), Raj Rewal (Asian Games Village; Hall of Nations, 1972, demolished 2017 — the loss that pushed modern-heritage listing up the agenda), Anant Raje, Uttam Jain, Ranjit Sabikhi.
• Statutory and professional framework: Architects Act, 1972 and the Council of Architecture (protects the title "architect", regulates education); National Building Code of India 2016 (SP 7); state and municipal development control regulations/UDCPR for bulk, FSI and heights; AMASR Act, 1958 with the 2010 amendment — a 100 m prohibited area and a further 200 m regulated area around centrally protected monuments, with the National Monuments Authority and ASI controlling works there; state heritage regulations and heritage conservation committees (Mumbai's heritage listing dates from 1995). UNESCO: CSMT (2004) and the Victorian Gothic and Art Deco Ensembles of Mumbai (2018).

Key points

• Trabeated vs arcuated - post-and-beam (Egypt, Greece) versus arch, vault and dome (Rome onward); the distinction drives span, opening size and wall thickness.
• Order - column plus entablature designed as a proportional system; module is the lower column diameter.
• Entasis - deliberate convex swelling of a column shaft to counter the optical illusion of concavity.
• Triglyph and metope - alternating members of the Doric frieze, derived from timber beam-ends and the panels between.
• Pendentive vs squinch - spherical triangle versus corner arch, both used to set a circular dome on a square plan; the pendentive is Byzantine, perfected at Hagia Sophia.
• Pointed arch - allows the same span at different rises and reduces horizontal thrust, letting Gothic bays of unequal width rise to one level.
• Flying buttress - external half-arch transferring vault thrust across the aisle to a pinnacle-weighted pier.
• Rib vault - ribs concentrate load at corners, so walls become infill and windows can grow.
• Linear perspective and proportion - the Renaissance method of ordering space mathematically; Palladio's room ratios and the golden section.
• Baroque - movement, curvature, oval geometry and controlled light; Borromini as its most plastic exponent.
• Crystal Palace, 1851 - prefabricated modular iron and glass; the first demonstration of industrial building.
• Steel frame and curtain wall - Chicago School devices separating structure from enclosure; the origin of the skyscraper.
• Form follows function - Sullivan's dictum; Loos' *Ornament and Crime* carries it to the elimination of applied ornament.
• Five Points, 1927 - pilotis, free plan, free façade, ribbon window, roof garden (Villa Savoye).
• Modulor - Le Corbusier's anthropometric proportioning system built on a 1.83 m figure, 2.26 m raised arm and the ratio 1.618.
• Brutalism - béton brut, massive legible form, services and structure expressed.
• Duck vs decorated shed - Venturi's distinction between a building that is a sign and one that carries a sign.
• Critical regionalism - modern tectonics mediated by climate, place and material; the usual lens on Correa, Doshi and Baker.

Formulas and examples

1. Doric module (Parthenon). The columns have a lower diameter of about 1.905 m and a height of about 10.43 m.

• n = 10.43 / 1.905 = 5.48 diameters — within the Greek Doric range of roughly 4–6.5D (Roman Doric is slenderer, about 7–8D).
• Checking the opposite way: a Doric portico wanting H = 8.0 m needs D = 8.0 / 5.5 ≈ 1.45 m; the same height as Corinthian needs D = 8.0 / 10 = 0.80 m — which is why Corinthian looks so much lighter.

2. Eustyle colonnade and golden-section façade. Eight columns of D = 1.0 m, eustyle clear spacing s = 2.25 m.

• W = 8 × 1.0 + 7 × 2.25 = 8 + 15.75 = 23.75 m.
• For a golden-rectangle elevation, height = 23.75 / 1.618 = 14.68 m.
• Fibonacci check on φ: 34, 55, 89 → 55/34 = 1.6176, 89/55 = 1.6182 — the ratio converges on 1.6180.

3. Why the pointed arch wins (semicircular vs pointed). Span L = 10 m, uniformly distributed load w = 20 kN/m.

• Semicircular: rise r = L/2 = 5 m → H = 20 × 10² / (8 × 5) = 2000 / 40 = 50 kN.
• Pointed, rise r = 8 m → H = 2000 / (8 × 8) = 2000 / 64 = 31.25 kN.
• Reduction = (50 − 31.25)/50 = 37.5 % less horizontal thrust, so thinner walls and smaller buttresses — the structural logic of Gothic. A pointed arch also lets two different spans (nave bay and aisle bay) reach the same crown height, which a semicircular arch cannot.

4. Pantheon dome, by numbers. Internal span 43.3 m → r = 21.65 m; oculus diameter 8.2 m.

• Plan area = π × 21.65² = π × 468.72 = 1,472 m².
• Internal dome surface = 2π × 468.72 = 2,945 m².
• Volume under the hemisphere = (2/3)π × 21.65³ = 2.0944 × 10,148 = 21,253 m³.
• Oculus area = π × 4.1² = π × 16.81 = 52.8 m², i.e. 52.8 / 1,472 = 3.6 % of the plan — the building's only window, giving roughly a 1:28 daylight opening-to-floor ratio.

5. Modulor and the Unité d'Habitation. Blue series from 2,260 mm (raised-arm height), each step divided by 1.618:

• 2260 → 2260/1.618 = 1,397 → 1397/1.618 = 863 → 863/1.618 = 533 → 533/1.618 = 329 mm.
• Red series from 1,130 mm: 1130 → 698 → 432 → 267 → 165 mm.
• Corbusier set the Unité's apartment ceiling height at 2.26 m; a 3.66 m wide bay is 2 × 1.83 m, and 863 mm reads as a counter/parapet, 432 mm as a seat. Criticism to note in an answer: the system is based on a single male figure of 1.83 m, so it is not anthropometrically universal.

Where it is used

• Conservation and heritage consultancy: grading and restoring Victorian Gothic, Indo-Saracenic and Art Deco fabric in Mumbai, Kolkata, Chennai and Delhi; AMASR-area clearances through the National Monuments Authority; INTACH, ASI-empanelled practices, state heritage cells.
• Adaptive reuse and conservation-led development: mills and warehouses in Mumbai, godowns in Fort, railway buildings, bungalow precincts; modern-heritage listing of Chandigarh's Capitol Complex and 1960s institutional campuses.
• Design studio and competition practice: precedent study, parti and typology — the free plan, the courtyard, the mat-building, the open-to-sky space, the service core — argued directly from these periods in design juries and client presentations.
• Academia and examinations: B.Arch History of Architecture teaching, NATA/JEE Paper 2 and GATE AR coaching, CoA-regulated curriculum content.
• Interiors, museography and film/stage design: period-correct detailing of orders, mouldings, tracery and Deco motifs; museum and interpretation-centre design.
• Real-estate and branding work: "neo-classical" and "Mediterranean" residential idioms sold by large Indian developers — a working knowledge of the orders is what distinguishes correct proportion from pastiche.

Interview questions

• Q: What is the single structural idea that makes Gothic cathedrals possible? A: Concentrating vault loads at points — through the pointed arch, rib vault and flying buttress — so the wall stops being structural and can be glazed.
• Q: Difference between a pendentive and a squinch? A: A pendentive is a spherical triangle filling the corner between dome ring and square bay; a squinch is a small arch, niche or corbelled bracket bridging the corner. Hagia Sophia uses pendentives.
• Q: Why does a Doric column have no base and 20 shallow flutes with sharp arrises? A: It derives from a timber post set directly on the platform; the sharp-arrised flutes are the earlier, simpler cutting, while Ionic flutes are deeper with flat fillets and sit on a moulded base.
• Q: State Le Corbusier's Five Points and name the building that demonstrates them. A: Pilotis, free plan, free façade, ribbon window, roof garden — Villa Savoye, Poissy (1928–31).
• Q: What did Sullivan mean by "form follows function", and how is it misused? A: That a building's expression should follow its purpose and structure; it is misused as a ban on ornament, when Sullivan himself designed rich organic ornament.
• Q: What is the difference between a "duck" and a "decorated shed"? A: Venturi's terms — a duck is a building whose whole form is the symbol; a decorated shed is a conventional box carrying applied signage or ornament.
• Q: Why is Brutalism called that, and is the name about brutality? A: It comes from *béton brut*, raw concrete, not from brutality; the style expresses structure, services and board-marked concrete honestly.
• Q: What was the Bauhaus's contribution to architectural education? A: It merged fine art with craft workshops under a preliminary foundation course and tied design to industrial production — the model behind most modern basic-design curricula, including Indian ones.
• Q: Name one Indian building by Louis Kahn and one by Le Corbusier, with the idea each carries. A: Kahn's IIM Ahmedabad — brick geometry, served and servant spaces, light-filtering openings; Le Corbusier's Mill Owners' Association Building, Ahmedabad — brise-soleil and a free-plan concrete frame tuned to climate.
• Q: What is critical regionalism, and name an Indian architect usually read through it? A: Frampton's idea of a modernism mediated by place, climate, light and tectonics rather than universal style — B. V. Doshi (also Correa and Laurie Baker).
• Q: What regulatory constraint applies if you are designing next to a centrally protected monument in India? A: The AMASR Act, 1958 as amended in 2010 — no construction in the 100 m prohibited area and regulated construction in the next 200 m, requiring National Monuments Authority permission with ASI's input.
• Q: Why was the Crystal Palace significant beyond its style? A: It was a standardised, prefabricated, demountable iron-and-glass structure erected in months — the first large proof that building could be an industrial product.

Common mistakes

• Writing that the pointed arch was invented for appearance; it is first a structural and geometric device (lower thrust, variable rise for equal crown heights). Note also that pointed arches existed earlier in West Asian and Indian architecture — Gothic's innovation is the integrated system.
• Confusing the Doric of Greece with Roman Doric and Tuscan, or giving a Greek Doric column a base.
• Mixing Romanesque and Gothic in sketches — a semicircular arch drawn over a rib vault with tracery.
• Treating "Modern", "International Style" and "Postmodern" as one period, and dating Postmodernism before the 1960s.
• Reciting the Five Points without being able to point to them in a plan and section, which is what juries actually ask.
• Quoting the golden ratio as proven design intent in buildings where no documentary evidence exists (the Parthenon's claimed golden proportions are contested); say "proportional system" and name the source.
• Treating pre-1947 colonial buildings and post-1947 modernism as the same chapter, or placing Indo-Saracenic and Art Deco in the wrong decades (Indo-Saracenic from the 1870s; Indian Art Deco mainly 1930s–40s).

Related topics

Indian architecture history · Building construction and materials · Theory of design and design principles · Architectural conservation and heritage legislation · Structural systems: arches, domes and long spans · Housing and urban planning history.