Ikigai Daily
DriveEngineered timber fact1,835 of 1,961

Cross-laminated timber bonds boards in cross-oriented layers, usually at right angles, creating large, stable panels that can carry loads as walls, floors and roofs.

Wood strengthened by changing direction

EngineeringArchitectureDesignNature

Why it matters

The idea in context

A board is strongest and most changeable along particular directions set by its grain. CLT crosses those tendencies, so each layer helps restrain the next while the stack behaves as a plate rather than a bundle. Panels can be digitally cut for openings before reaching site, shifting labour from scaffold to factory. The material is not simply a return to wood; it is timber rethought as a precise, layered structural system whose climate value still depends on forestry, adhesives, transport and long service life.

Türkçe

Aynı kart, başka bir dilde.

Çapraz lamine ahşap, tahtaları çoğunlukla dik açıyla çapraz yönlendirilmiş katmanlar hâlinde birbirine yapıştırarak duvar, döşeme ve çatı olarak yük taşıyabilen büyük ve kararlı paneller oluşturur.
Yön değiştirerek güçlenen ahşap

Bir tahta, damarının belirlediği yönlerde hem en güçlü hem de en değişkendir. CLT bu eğilimleri çaprazlar; her katman yanındakini sınırlar ve yığın bir demet yerine plaka gibi davranır. Paneller şantiyeye gelmeden açıklıkları sayısal olarak kesilebilir; emek iskeleden fabrikaya taşınır. Malzeme yalnızca ahşaba dönüş değildir; kerestenin hassas ve katmanlı bir taşıyıcı sistem olarak yeniden düşünülmesidir. İklim değeri ise hâlâ ormancılığa, yapıştırıcılara, taşımaya ve uzun kullanım ömrüne bağlıdır.

Source trail

Read beyond the card.

Background reading: Cross-laminated timberAttribution and context are revised when stronger evidence appears. Corrections are welcome through the editorial page.
Open in the iPhone appEditorial method

Related cards

These cards share a subject or mode with the one above. The route is editorial, not personalised.

Q1797
DriveBiography

Fazlur Rahman Khan transformed high-rise engineering with tube structural systems, making towers such as Chicago's John Hancock Center and Willis Tower more efficient against wind and gravity.

Khan's genius was to see that a tall building could behave less like a stack and more like a tube. By moving structural strength toward the perimeter, his systems resisted wind with less waste and opened new possibilities for height, form and economy. The skyline changed because an engineer thought structurally and humanly at once: buildings had to stand, but they also had to make room for life high in the air.

Fazlur Rahman KhanRead card
Q1800
WonderArchitecture

Jørn Utzon's Sydney Opera House joined sculptural design with major engineering innovation, becoming both a performing arts centre and a twentieth-century architectural icon.

The Sydney Opera House succeeds because it is more than an object on the water. Its shells answer the harbour, the sky and the idea of performance before the curtain rises. Utzon's vision and Ove Arup's engineering made form and construction argue productively with each other. The result is a building that became a civic instrument: a place where architecture helps a city hear itself.

Sydney Opera HouseRead card
Q1885
DriveEngineering

Prestressing tensions steel tendons so concrete begins in compression, helping it resist cracking and span farther when service loads later try to pull it apart.

Concrete is formidable in compression but vulnerable in tension. Engineers answer that asymmetry by stretching high-strength steel before or after casting, then transferring a deliberate squeeze into the member. When traffic or gravity arrives, part of its tensile demand first has to cancel that stored compression. The structure performs because its forces have been choreographed in advance: an invisible rehearsal held inside a bridge deck or beam.

Prestressed concreteRead card
Q1888
WonderEngineering

In suitable wet-dry conditions, weathering steel develops a tightly adhering oxide patina that slows further corrosion and can eliminate the need for paint.

Ordinary rust can flake away and expose fresh metal, continuing the cycle. Weathering alloys instead encourage a dense surface layer that limits the arrival of oxygen and moisture beneath it, while colour deepens from orange toward dark brown. The trick is conditional: persistent dampness, salt and poor detailing can defeat the patina. It is a material with an argument built in—the weather is not merely an attacker, but part of the finishing process.

Weathering steelRead card
Q1799
WonderArchitecture

Antoni Gaudí's Sagrada Familia combines Gothic ambition, natural forms, ruled geometry and craft, with Gaudí's Nativity facade and crypt recognized by UNESCO.

Sagrada Familia is famous for being unfinished, but its deeper lesson is integration. Gaudí studied trees, light, gravity, geometry and devotion as parts of one problem. Columns branch, surfaces carry symbols, and structure becomes ornament because the building does not separate engineering from wonder. It is a basilica that seems to grow rather than simply rise.

Sagrada FamiliaRead card
Next in the open archiveInvented by Leo Baekeland in 1907, Bakelite was the first fully synthetic plastic and a heat-resistant electrical insulator that could be moulded into mass-produced forms.Q1887