The Fifth Desk · Evaluation
Act I · The Map
Adrian Smith (Skidmore, Owings and Merrill) · a mixed-use supertall tower, scored as the tower as it stands: foundations, podium entrances, the buttressed concrete tower, its setbacks and curtain wall, the steel spire to the tip, and the uses housed in it · three wings on a Y plan round a hexagonal central core, each wing buttressing the other two, stepping back in a spiral as the tower rises until the core alone goes on into a structural steel spire; reinforced concrete core and wing walls on a piled raft over bored piles; reflective glazing with aluminium and textured stainless steel spandrels and vertical fins · 828 m to the tip, the tallest structure ever built; the Armani Hotel in the lower floors, residences above it, offices higher, and observation floors in the upper levels, the deck named At the Top · Downtown Dubai, United Arab Emirates · begun 2004, topped out 2009, opened on 4 January 2010 as the Burj Khalifa, built as the Burj Dubai · Skidmore, Owings and Merrill, Chicago, with Adrian Smith as design partner and William F. Baker as structural engineer, for Emaar Properties · as it stands, whole as built, nothing lost or rebuilt, and in use for all its purposes since 2010
Mode
The supertall as civic sign; a hotel, residences, offices and an observation deck stacked in one tower built to be the tallest
Mythos
The tower that rises to heaven, built as an ascent from a broad base to a single point; Babel, without the confusion or the fall; the stepped mountain turned into a spiral round one axis
Phase
Begun 2004; topped out 2009, the year of Dubai’s debt crisis; opened and renamed on 4 January 2010; in continuous use since, sixteen years and ten months at this reading
Presentation
A Y plan of three wings round a hexagonal core; setbacks turning in a spiral; a concrete tower and a steel spire to 828 m; a skin of reflective glass, aluminium and stainless steel; hotel, residences, offices and observation floors
Register
Cold, silver and vertiginous; the sublime of magnitude, seen as one stroke from far off and, from the deck, as a city laid out as a plan
Scale
One tower and its city; the state, the market and the desert wind held in one figure
Governing Proposition
A city sets out to build the sign of a world city before it is one: a tower to be the tallest structure ever made, by a margin no earlier record had approached. The wager of the building is that a height so far past the last can be reached by letting the wind find the form, three wings bracing one core and giving up their floors in a spiral, so that the figure and the structure are one fact. Built under its own city’s name, it opened under the name of the neighbour that had paid its city’s debts.
Act II · The Essay
Movement I
Construction began in Dubai in 2004 on a tower meant to be the tallest structure ever built, and by a wide margin. The developer was Emaar Properties. The design came from the Chicago office of Skidmore, Owings and Merrill, with Adrian Smith as design partner and William F. Baker as structural engineer. Through the years of building the tower was called the Burj Dubai, the tower of the city that built it. It topped out in 2009 at 828 m to the tip, and it opened on 4 January 2010. It has held the title of the tallest structure ever built since it topped out, and it holds it still.
The margin is the first fact of the building. The tallest building before it, Taipei 101, rose to 508 m; the Burj Khalifa stands 1.63 times as high. The Chrysler Building, the record tower of 1930, is 319 m to the tip of its spire, and this tower is 2.6 times that. The record was taken by 320 m: a building more than 60 per cent taller than the last was proposed, engineered and built in one campaign of six years.
The purpose was the height, and the height was a sign. A city that meant to stand among the world’s cities built the sign of one first: a single figure to be seen over a flat city and a flat desert, and to be known everywhere as the tallest. Around it the developer built a district, a mall, a lake and a fountain, which are context and are not scored here. The work is the tower: its foundations and podium entrances, the concrete of its core and wings, its setbacks and curtain wall, the steel spire to the tip, and the hotel, residences, offices and observation floors it holds.
Movement II
The plan is three wings on a Y, set round a hexagonal central core. Each wing braces the other two, and the core braces all three: Baker called the system the buttressed core. In reinforced concrete, core and wing walls carry most of the height, and the whole stands on a piled raft over bored piles. The plan does its work for the rooms as well as for the structure, since three narrow wings give every room a short span to the glass. Take a wing away and the tower falls. Here, as in few towers, the shape is the structure.
As the tower rises the wings step back, one after another, the setbacks turning in a spiral round the core. At each step the cross-section changes, and so the wind cannot organise its vortices at one frequency up the whole height: the form is found with the wind, not imposed on it. The spiral is the order in which the wings can give up their floors without losing the buttress, and it ends where the wings end, in a single central shaft and then a structural steel spire. From the ground the steps are not read as steps. The tower reads as one tapering figure, and the taper shows how a building must thin as it climbs.
The inheritance was the supertall of the late twentieth century: the bundle of tubes or the framed tower, in the Sears Tower and Taipei 101, the structural expression long practised by Skidmore, Owings and Merrill, and behind them Wright’s dream of a tower a mile high. Smith had already built the Jin Mao Tower in Shanghai, tapered and stepped and alluding to its region. The swerve was in the system, which made such a leap possible in concrete, and in a shape drawn out of the wind. What did not swerve was the language: a tapering glass shaft with a spire was already the supertall’s, and the regional reference repeats Jin Mao’s.
Movement III
Seen from far off the tower is one silver stroke over the flat city and the desert, at a scale no other building offers. Seen from its foot it tapers out of sight, the setbacks climbing past the point where the eye can follow, so that the top cannot be found. Its tip takes the light after the city below is in shadow. This is the sublime of magnitude, cold, close to dread, the elevation of a body lifted half a kilometre into a desert sky. The tower is known from far away, and its height is the whole of its elevation, repeated as one effect from different distances.
The spire is the most expensive part of the record and the least used. Much of it stands above any usable floor, and it could be taken away without loss to any use. It is there for the record and the image, and the tower’s need ends where its image begins. The defence that a building whose purpose is its image may add whatever enlarges the image carries the spire, and with it the tower, just over the line that the summit requires of necessity; but a purpose that is only an image licenses any addition, and the spire stays a cost. Below it, almost nothing could be taken away.
The archetype is plain to everyone who sees it: the tower that rises to heaven, the broad base climbing to a single point, the stepped mountain turned into a spiral round one axis. The Ziggurat of Ur (8.1) holds that archetype at its source, where it is its own; here it is inherited, and it is built rather than alluded to, since the spiral of setbacks is how the tower stands. The particular myth is Babel, the tower a city builds to make itself a name. The Burj Khalifa builds the ascent alone. The confusion and the fall are not in it; it stands, and what it lacks is a second act.
Movement IV
The tower is stacked by use. The Armani Hotel occupies the lower floors, residences stand above it, offices fill the upper occupied floors, and in the upper levels are the observation floors, the deck named At the Top. From the deck the city reads as a plan. The deck is reached by lift, and it gives a view rather than a room. The lobby, the hotel and the residences are luxury interiors of a standard kind, and the building’s height does not enter them except at the windows.
The form does some work for the people inside. The three wings give apartments and hotel rooms light and long views on three sides, and the setbacks give terraces and floor plates that grow smaller and rarer toward the top. But life inside is lived much as in any luxury tower of its period, round a core, behind glass. The curtain wall of reflective glazing, with aluminium and textured stainless steel spandrels and vertical fins, is competent corporate glazing, refined in its fins and no more. The base meets the ground through podium entrances without much force.
One law governs the tower from the raft under the sand to the needle at 828 m: three lobes round a core, giving up their lobes in a spiral as the height rises, until the core alone goes on. Plan, section, the vertical lines of the skin and the shape of the setbacks obey one geometry, readable from any distance. The law is pure and it is narrow, one plan, one rule of setback, one material skin, and the entrances, the hotel and the public deck follow the law of luxury fit-out and the tourist attraction rather than the tower’s own. Command of the structure outruns command of the whole.
Movement V
The tower was rising when Dubai’s finances failed in the debt crisis of 2009, and Abu Dhabi gave financial support to its neighbour. At the opening the Burj Dubai became the Burj Khalifa, named for Sheikh Khalifa bin Zayed Al Nahyan, then President of the United Arab Emirates and ruler of Abu Dhabi. It is the building’s sharpest disclosure: the creditor’s name at the top of the world. The tower states, too, that height has passed from the cities of American and East Asian commerce to a Gulf state of rent and finance. These things are told by its history more than by its form; and the form does not admit the labour, much of it migrant, on which the tower and its city rest.
Its reach in the field is real and early. It showed that concrete could go past 800 m and put the shaping of a tower against the wind at the centre of tall-building design. The Jeddah Tower, by a later firm of Smith’s own, takes the same three-winged buttressed system higher, and the tapering, wind-shaped supertall is now the type across the Gulf and East Asia; Gulf and Asian capitals have followed the tower in making the tallest building the image of a state or a city. Its survival is whole and short: the form unaltered, the use continuous since 2010 through a crisis, a renaming and a pandemic. When a taller building is finished, it will have to stand as a form without its title.
What holds it in Tier III is plain. The Made at 8.8 is the highest figure on the page, and The Sublime and Pressure on Tradition at 8.2 stand beside it; the axes of consequence stand lower, The Unconcealment at 7.2, The Bottomless Well at 7.0 and The Encompassed at 6.8, because the form states height more than a meaning, holds little more to find once its structure is explained, and holds the state, the market and the wind without labour, household, the sacred or death. The Chrysler Building (8.1) stands above it on every axis but The Made, and The Eiffel Tower (8.7), built to be the tallest and shaped by the wind, stands above it on all of them, with more than a century of survival and return. The Burj Khalifa stands at 7.8: a structure of the first rank, carrying a sign.
Act III · The Twelve
Judged on purpose, structure and site, and the purpose was to be the tallest by a wide margin. At the core of the building that purpose compels almost everything. The Y plan is required: three wings stiffen the core and each other, and give every room a short span to the glass. The setbacks are required: each changes the section, so that the wind cannot organise its vortices at one frequency up the whole height, and the spiral is the order in which the wings can give up floors without losing the buttress. Take away a setback and the tower sways; take away a wing and it falls. What fails the test is the top: the spire, much of it above any usable floor, is there for the record and the image. The hotel and the residences are fittings to a height, not required by it.
Score: 7.6 / 10
What can be stated, and holds: that a small state could build its existence as a world city by building the sign of one first, and that the sign could be paid for, in the end, by a neighbour whose name went on it. The renaming at the opening is the sharpest disclosure, the creditor’s name at the top of the world. The tower states in space, too, that height has passed from the cities of American and East Asian commerce to a Gulf state of rent and finance. But this is disclosed by the building’s history more than by its form. What the form discloses is that a body can be lifted half a kilometre into a desert sky: a mood of power and vertigo, which ranks below a meaning. The figure rests on how little the form states.
Score: 7.2 / 10
Height is extreme, and outside the frequency is real. Elevation comes in the needle seen over the flat city and the desert from far off, one silver stroke at a scale no other building offers; in the taper seen from the foot, where the setbacks climb out of sight and the eye cannot find the top; in the tip catching light after the city below is in shadow; and on the observation floors, where the city reads as a plan. The register is the sublime of magnitude, cold and close to dread. Inside it falls: the lobby, the hotel and the residences are luxury interiors of a standard kind, and the deck, reached by lift, gives a view rather than a room. The height is the whole of the elevation, repeated from different distances.
Score: 8.2 / 10
One archetype is built, and built entire: the tower that rises to heaven, an ascent from a broad base to a single point, the stepped mountain turned into a spiral round one axis. The structure is load-bearing in the literal sense, since the spiral of setbacks is how the tower stands, and the particular myth is plain to every viewer: Babel, the tower a city builds to make itself a name. But the building builds the ascent alone, not the confusion and the fall. The regional sources said to lie behind the three-lobed plan are its provenance, not its meaning, and are not felt in the building as lived. The axis of the world is built; the rest is allusion.
Score: 7.8 / 10
The inheritance: the supertall as a bundle of tubes or a framed tower, in the Sears Tower and Taipei 101; the structural expression long practised by Skidmore, Owings and Merrill; Smith’s own Jin Mao Tower in Shanghai, tapered, stepped and alluding to its region; and Wright’s dream of a tower a mile high. The departure is a structural system, the buttressed core, that made possible in concrete a building more than 60 per cent taller than the previous record, and a shape found with the wind rather than imposed on it. The stake was very large: the leap was without precedent, and the tower was rising when Dubai’s finances failed. Held below the top because the turn is in engineering more than in what a building is: a tapering glass shaft with a spire is the late twentieth-century supertall’s language, and the regional reference repeats Jin Mao’s.
Score: 8.0 / 10
Change the form, and what is lost? The purpose the form serves best is the image: put a rectangular tower of the same height in its place and the city loses its sign and the world its tallest figure. For the people inside, the form does some work. The three wings give apartments and hotel rooms light and long views on three sides; the setbacks give terraces, and floor plates that grow smaller and rarer as they rise. But life inside is lived much as in any luxury tower of its period, round a core, behind glass, reached by lift. What the form knows is height itself, and it knows it exactly: the taper shows how a building must thin as it climbs. That knowledge is real, and it is narrow.
Score: 7.5 / 10
Evidence over promise, and sixteen years supply some. The tower has yielded a literature of engineering, on the buttressed core, the wind, the concrete and the foundations; a literature of urbanism and critique, on Dubai as a city of spectacle, labour and debt, and on the Gulf’s building of itself as a brand; and a great deal of image, in film and in the press. The questions are about Dubai more than about the building. Once the structure has been explained, the tower holds little more to find in its plan or its section, and its return is mostly the return of its record and its city. The engineering yield continues; the formal yield is not yet shown. A new work can only be forecast here, and the forecast is modest.
Score: 7.0 / 10
The field is the tall building. The intrinsic force is a real reorganisation of possibility within it: the buttressed core showed that concrete could go past 800 m, and the shaping of a tower against the wind by varying its section was put at the centre of tall-building design. Achieved reach is scored with intrinsic force: wide within its field in sixteen years. The Jeddah Tower, by a later firm of Smith’s own, takes the same three-winged buttressed system higher, and the tapering, wind-shaped supertall is now the type across the Gulf and East Asia. Beyond engineering, the tower made the tallest building the instrument of a state’s or a city’s image in a new region, and Gulf and Asian capitals have followed. The influence is early, untested by time, and in a narrow field.
Score: 8.2 / 10
Weighed on form, use and fabric, in that order. The form is whole as built: nothing lost, replaced or rebuilt. The use has been continuous since January 2010, for every purpose the tower was built for, through a debt crisis, a renaming and a pandemic. The fabric, concrete, steel and glass, is in service on a hot, saline and windy site. But the span is sixteen years, and demonstrated survival is short; a presence as wide as any building can have earns a little. The surface is fixed to its moment: much of what the tower is, is its record, and a record is a technology and a date. When a taller building is finished the tower will have to stand as a form without its title, which it has not yet had to show it can.
Score: 8.1 / 10
Judged as command of building, structure and engineering included. Here the making is load-bearing as in few towers: the shape is the structure and the structure is the answer to the wind, so that form and engineering cannot be parted. The buttressed core is an elegant solution, simple in plan and repeatable in construction, and the concrete at that height, the raft in poor ground and the long climb of the core are command of the first rank. The spiral taper is handled with assurance: from the ground the tower reads as one tapering figure, not a stack of steps. The costs: the curtain wall is competent corporate glazing, refined in its fins and no more; the interiors are luxury fit-out; the spire is vanity well engineered; and the base meets the ground without much force.
Score: 8.8 / 10
Take the two most distant elements: the piled raft under the desert sand and the steel needle at 828 m. One law governs both and everything between: the three-lobed plan round a central core, giving up its lobes in a spiral as the height rises, until the core alone goes on as the spire. Plan, section, the vertical lines of the cladding and the shape of the setbacks obey one geometry, and the law can be read from any distance. What bends it: the law is narrow, one plan, one rule of setback, one skin, and narrowness is not coherence. The podium entrances, the hotel interiors and the public deck follow the law of luxury fit-out and the tourist attraction, not the tower’s own.
Score: 8.0 / 10
Orders held: the state, in its patronage and its renaming; finance and the speculative market, which built the tower and nearly broke it; the city, as its sign and centrepiece; the natural order, in the desert wind the form is shaped against and the heat the glass keeps out; and the individual, as resident, guest and visitor on the deck. The state, the market and the wind are integrated in one figure: the wind in the shape, the state and the market in the height and the name. What holds the axis at the foot of the twelve is what is absent: labour, which built the tower and is not admitted by it; the household as lived; the sacred, except as the shape of an ascent; death and history, except as a record to be broken. A tower of rooms, apartments and offices holds one moment’s ambition, and the figure describes the form.
Score: 6.8 / 10
Act IV · The Reckoning
7.8 / 10 · Final Average
Placement: Tier III · Major
Strongest Dimensions
The Made at 8.8, then The Sublime and Pressure on Tradition at 8.2 and The Imperishable at 8.1. A making in which the shape is the structure and the structure answers the wind, the buttressed core simple in plan and carried past 800 m in concrete; a single silver stroke over a flat city, its taper climbing out of sight; a real reorganisation of the tall building, taken up across the Gulf and East Asia; and a form whole and in use for every purpose since 2010.
Limiting Dimension
The Encompassed at 6.8: the state, the market, the city, the wind and the visitor are held in one figure, and labour, the household, the sacred and death are absent. Next above it, The Bottomless Well at 7.0 and The Unconcealment at 7.2: a return given mostly to the record and the city rather than to the plan and the section, and a form that discloses height and the power that buys it, its sharpest disclosure, the creditor’s name at the top, told by its history more than by its shape. The tower is an engineering achievement of the first rank that carries a sign more than a meaning.
The Necessity Cap clears at 7.6 against a threshold of 7.5, by a tenth. The Coherence Floor clears: The Living Form at 7.5, The Made at 8.8, The Inner Law at 8.0, each against 7.0. The Epochal Gate is unmet on all five: Pressure on Tradition at 8.2, The Imperishable at 8.1, The Swerve at 8.0, The Archetypal Deep at 7.8 and The Unconcealment at 7.2 each fall short of the bar of 8.5. The Universal Minimum is unmet at The Unconcealment, 7.2, and The Bottomless Well, 7.0, both below 7.5; The Encompassed, which it exempts, clears its own floor of 6.0 at 6.8. Three of the five summit conditions are met. The work stands where its aggregate places it: 7.8, in the band of Tier III, short of the 8.0 at which Tier IV begins and of the 9.0 that the summit requires.
Basis · a reading from knowledge of the tower as it stands in October 2026 and of its documented form, structure, programme and history. No plan, image or written source was consulted. The unit scored is the tower: its foundations and podium entrances, the buttressed concrete tower with its setbacks and curtain wall, the steel spire to the tip, and the uses housed in it, the hotel, the residences, the offices and the observation floors. What has been built into it in its life as this tower, the fit-outs, the hotel interiors and the later observation levels, is part of the one work and is credited or charged to it. Nothing has been lost, replaced, relocated or rebuilt: the tower stands whole as built, in continuous use since January 2010. Downtown Dubai as a development, the Dubai Mall, the lake and fountain before the tower, the light shows projected on its façade and Emaar Properties as an institution are context and are not scored. The design is credited to Skidmore, Owings and Merrill, with Adrian Smith as design partner and William F. Baker as structural engineer; the structural system is as much Baker’s as the form is Smith’s, the two are one work, and collaboration is not charged. Nothing is quoted: no inscription or statement on the building is held word for word, and the name of the structural system is given as a name. Facts that could not be verified, among them the number of floors, the levels of the observation floors, the height of the spire above the highest occupied floor, the number of setbacks, the wind-tunnel testing behind the setbacks, the methods of pumping the concrete and of protecting the foundations from the groundwater, the contractors, the sources the designer has cited for the plan, the precedents acknowledged, and the record of disputes on the construction site, are not given.