20 Empire State Buildings Inside The Mukaab

20 Empire State Buildings Inside The Mukaab

The most frequently cited comparison for The Mukaab’s scale is the claim that “20 Empire State Buildings could fit inside it.” This statement, originating from the New Murabba Development Company, powerfully communicates the building’s unprecedented volume to a global audience familiar with New York’s most famous skyscraper. But is it accurate, and what does it actually mean in engineering terms?

The Volume Calculation

The Empire State Building has a total volume of approximately 1.04 million cubic meters, calculated from its floor plates at each level multiplied by floor-to-floor heights. The Mukaab’s volume is 64 million cubic meters (400m x 400m x 400m). Dividing the Mukaab’s volume by the Empire State Building’s volume yields approximately 61.5 — meaning that theoretically, more than 60 Empire State Buildings could fit within the Mukaab’s volume, making the “20” claim extremely conservative.

However, the comparison is more nuanced than simple volume division. The Empire State Building’s tapered form means that physically fitting it inside the cube requires considering its 443-meter antenna-tip height (exceeding the Mukaab’s 400-meter interior height), its widest base dimensions, and the irregular voids between multiple Empire State Buildings arranged within a cube. When accounting for the building’s height (requiring the antenna to be excluded) and the packing inefficiency of placing tapered towers within a cube, the practical number drops but still comfortably exceeds 20.

What This Means Architecturally

The comparison illustrates the fundamental difference between the Mukaab’s cube geometry and conventional supertall design. The Empire State Building represents efficient vertical construction — maximum height with minimum footprint. Its 102 floors rise to 381 meters (443 meters to the antenna tip) from a base of approximately 129 by 57 meters. This slender form creates a building with impressive height but modest volume.

The Mukaab reverses these priorities. By maintaining its full 400-meter width and length at every level from base to roof, it sacrifices the structural efficiency of tapering in exchange for maximum enclosed volume. The 1 million tonnes of structural steel — more than 30 times the Empire State Building’s steel content — reflect this trade-off.

Floor Area Versus Volume

While the volume comparison captures public imagination, the floor area comparison tells a different story. The Empire State Building contains approximately 257,000 square meters of floor area across its 102 floors. The Mukaab’s 2 million square meters of floor area represents approximately 7.8 times the Empire State Building’s usable space — impressive but far less dramatic than the volume multiple.

This disparity arises because much of the Mukaab’s 64-million-cubic-meter volume is not occupied by floor plates. The holographic dome, the atrium spaces surrounding the spiral tower, and the open volumes created by the building’s experiential design consume enormous cubic footage without adding floor area. This is by design — the Mukaab’s value proposition is not maximum floor efficiency but maximum experiential impact. The open volumes that reduce the floor-area-to-volume ratio are the spaces that create the building’s most compelling experiences.

The broader New Murabba development adds 25 million square meters of total floor area including 104,000 residential units, 9,000 hotel rooms, 980,000 square meters of retail space, and 1.4 million square meters of office space across 18 neighborhoods. This total development floor area exceeds 97 Empire State Buildings worth of usable space.

Steel Content Comparison

The structural comparison extends to material quantities. The Empire State Building used approximately 60,000 tons of steel in its construction — remarkable for 1931 but modest by modern mega-project standards. The Mukaab’s 1 million tonnes of structural steel represents approximately 16.7 times the Empire State Building’s steel content. This ratio is lower than the volume ratio (nearly 5x for Boeing, 61.5x for Empire State) but higher than the floor area ratio, reflecting the structural intensity demanded by maintaining a full 400-meter cross-section rather than the Empire State Building’s tapering profile.

The steel order for the Mukaab, valued at approximately $1 billion, constitutes the largest single structural steel procurement in construction history. By comparison, the Empire State Building’s total construction cost in 1931 was approximately $41 million (roughly $700 million in 2024 dollars) — meaning that the Mukaab’s steel alone costs more than the entire Empire State Building would cost to build today.

Construction Timeline Comparison

The Empire State Building’s construction speed remains one of the most remarkable achievements in building history. From groundbreaking on March 17, 1930 to completion on April 11, 1931, the building rose in just 410 days. At peak construction, workers added an average of 4.5 floors per week, with the structural steel frame rising at a rate that astonished even contemporary observers.

The Mukaab’s construction timeline operates on a fundamentally different scale. Originally announced in February 2023 with a target completion of 2030, the project has since been extended to a phased completion through 2040. The excavation alone — removing 40 million cubic meters of earth from the al-Qirawan district site — has required years of continuous earthmoving operations, with 86 percent completion reached by early 2026. The 1,200 foundation piles being driven by HSSG Foundation Contracting add months of foundation work before any superstructure steel can rise.

This timeline disparity reflects both the difference in scale and the difference in regulatory and safety environments between 1930s New York and 2020s Saudi Arabia. The Empire State Building’s construction involved worker deaths and safety practices that would be impermissible today. The Mukaab’s project management by Bechtel follows modern international safety standards, extending timelines but protecting the workforce.

Cost Comparison in Context

The financial comparison between the two buildings reveals the escalation in construction costs and ambition over nine decades. The Empire State Building cost $41 million in 1931 dollars, or approximately $700 million adjusted for inflation. The Mukaab’s total project cost is estimated at $50 billion — approximately 71 times the inflation-adjusted cost of the Empire State Building. However, the Mukaab delivers approximately 7.8 times the floor area and nearly 62 times the volume, suggesting that the per-unit cost increase reflects not just inflation but the extraordinary complexity of building a 400-meter cube versus a conventional tapered tower.

The economic impact projections for the Mukaab suggest that the building will contribute $47 billion to Saudi Arabia’s non-oil GDP and create 334,000 jobs — an economic footprint that the Empire State Building, as transformative as it was for 1930s Manhattan, could not approach.

The Power of Comparison

The “20 Empire State Buildings” comparison endures because it succeeds at its primary purpose: communicating scale to a global audience. The Empire State Building remains one of the most universally recognized structures in the world, and using it as a measuring unit makes the Mukaab’s unprecedented volume instantly comprehensible. Whether the precise number is 20 or 61.5, the message is the same — the Mukaab is proposing to enclose a volume of space that dwarfs anything humanity has previously attempted.

The comparison also highlights a philosophical difference between the two buildings. The Empire State Building was built for practical efficiency — maximum rentable office space on a valuable Manhattan lot. The Mukaab is built for experiential impact — maximum immersive experience within a culturally symbolic form. One optimized for square meters per dollar; the other optimizes for cubic meters of wonder.

This distinction reflects the broader evolution of architectural ambition from the 20th to the 21st century. Where the Empire State Building raced to be the tallest, the Mukaab races to be the most voluminous. Where the Empire State Building sold floor space, the Mukaab sells experiences. Where the Empire State Building symbolized American industrial might, the Mukaab symbolizes Saudi Arabia’s Vision 2030 transformation from oil-dependent economy to diversified global hub.

Global Mega-Structure Context

The Mukaab enters a lineage of buildings that have redefined human expectations of enclosed space. The Boeing Everett Factory in Washington state held the volume record since 1967 at 13.4 million cubic meters — the Mukaab will be nearly five times larger. The New Century Global Center in Chengdu, China, currently the world’s largest building by floor area at 1.76 million square meters, will be surpassed by the Mukaab’s 2 million square meters. The Aalsmeer Flower Auction in the Netherlands at 518,000 square meters, the Dubai Mall at 502,000 square meters, and the Surat Diamond Bourse at 660,000 square meters all represent significant enclosed spaces — yet none approaches the Mukaab’s volumetric ambition.

What distinguishes the Mukaab from these predecessors is purpose. The Boeing factory encloses space for industrial manufacturing. The New Century Global Center distributes its floor area across a sprawling low-rise structure. The Dubai Mall maximizes retail frontage across horizontal planes. The Mukaab encloses its volume vertically in a perfect geometric form — not for manufacturing efficiency or retail optimization, but for the creation of immersive human experiences that require cavernous interior volumes. The holographic dome alone demands 300 meters of uninterrupted vertical space — a requirement that only a structure of the Mukaab’s proportions can satisfy.

Engineering Implications of Scale

The structural engineering required to maintain a 400-meter cube profile introduces challenges that tapered towers like the Empire State Building avoid entirely. A tapered tower reduces wind load at higher elevations by narrowing its cross-section. The Mukaab presents a full 160,000-square-meter face to prevailing winds at every elevation — creating wind loads that scale linearly with height rather than diminishing as they do in conventional supertalls.

The foundation system reflects this structural intensity. The 1,200 piles supporting the Mukaab transfer loads to bedrock across the full 160,000-square-meter footprint. The 40 million cubic meters of excavated earth — equivalent to removing a hill 400 meters on each side and 25 meters deep — created the cavity required for foundation construction. HSSG Foundation Contracting, the Saudi-German joint venture executing the piling program, is driving piles to depths that accommodate both the static weight of 1 million tonnes of steel and the dynamic loads generated by wind acting on the cube’s enormous flat surfaces.

Thermal management presents another challenge absent from the Empire State Building comparison. The Mukaab’s climate control systems must maintain comfortable temperatures within a 64-million-cubic-meter volume in a climate where exterior temperatures regularly exceed 50°C. The Empire State Building’s HVAC systems serve approximately 1 million cubic meters — the Mukaab’s cooling challenge is 64 times larger. The energy systems required to cool this volume sustainably align with the building’s sustainability features, including solar integration, thermal mass management, and natural ventilation strategies that exploit the cube’s geometry to create stack-effect airflow patterns.

The Mukaab as Measurement Unit

As the Mukaab approaches completion, it may itself become a unit of architectural measurement — just as the Empire State Building has served this role for nearly a century. Future mega-structures may be described as “half a Mukaab” or “two Mukaabs” in the same way that today’s buildings are measured against the Empire State. This transition would mark a symbolic shift in architectural reference points from the American skyscraper era to the Gulf mega-structure era — a shift that reflects the geographic redistribution of architectural ambition from the Atlantic economies to the emerging powers of the Middle East and Asia.

The New Murabba development surrounding the Mukaab reinforces this shift. With $50 billion in total investment, 104,000 residential units, and a projected 90 million annual visitors, New Murabba is not merely building a landmark but creating a new urban center that redefines what a single development project can achieve. The Mukaab stands at the center of this vision — not just as the world’s largest building, but as the architectural symbol of Saudi Arabia’s Vision 2030 transformation.

For related analysis, see building comparisons, cube geometry, structural design, and Burj Khalifa comparison.