Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum by Alessandra Delgado

Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum by Alessandra Delgado is a highly esteemed winner of the very prestigious 2026 A' Design Award Kub in Tsim Rooj Tog Competition Category.

KubRooj Tog· 2026

Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum

by Alessandra Delgado

Client: Alessandra Delgado Design

A' Design Award Kub Winner in Rooj Tog Category

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Verified Award Winner

Verify Award Status for #173664

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Colors

The Design

About Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum

Gera yog ib qho qauv ntoo uas tau txais kev qhia los ntawm cov rooj tog uas muaj qauv tshiab ntawm Brazil thiab kev qhia meej meej hais txog cov qauv uas muaj nyob hauv Geraldo de Barros tej hauj lwm. Tsim los ntawm cov ntoo jequitiba ntawm Brazil uas tau lees paub thiab cov tawv nqaij ntuj raug, nws tsis muaj cov khoom hlau lossis cov khoom khi pom tau. Cov kev sib koom uas zais cia tau khaws cia kev sib txuas pom tau, thaum lub sij hawm cov nplhaib tawv nqaij uas raug nplhuab teb rau lub cev. Los ntawm kev txo cov khoom siv, kev nrhiav khoom siv uas muaj lub luag hauj lwm, thiab kev tsim qauv raug raug, txoj hauj lwm no qhia tau ib qho kev tshawb fawb txog ergonomics thiab kev nyob tas li uas tswj tau.

The Recognition

About the A' Design Award Kub

Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum yog tus yeej ntawm A' Design Award Kub, ib qho kev lees paub muaj meej mom heev uas muab rau cov qauv tsim qib ib, zoo kawg nkaus thiab tshwj xeeb. Cov neeg yeej Kub yog cov khoom tsim tshiab heev, pom deb heev thiab ci ntsa iab uas qhia txog kev txawj ntse, kev txawj thiab lub zog ntawm cov kws tsim qauv. Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum xav tias yuav yog ib qho kev tsim uas tau txais kev qhuas ntau, tsim kev nyiam tshiab thiab loj uas ua rau muaj nqi tsis tau muaj dua. Cov qauv tsim yeej A' Design Award Kub no yog ib qho haujlwm zoo kawg nkaus thiab muaj kev hwm uas pab tau ntau thiab nthuav dav ciam teb ntawm kev kos duab, kev tshawb fawb, kev tsim qauv thiab thev naus laus zis. Gera Lub Hauj Lwm Tseem Ceeb: Rooj Zaum ua rau muaj kev xav tau heev, txhawb kev mob siab, txhawb kev tsim tshiab thiab ua rau peb xav tsis thoob.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: Gera Chair redefines solid wood seating through structural minimization. Developed exclusively with wood and leather as load-bearing systems, it eliminates metal reinforcement and visible fasteners. The tensioned leather seat operates as a structural membrane, while concealed joinery ensures load transfer and rigidity. Weighing 4 kg, the chair achieves resistance through geometry and material behavior rather than mechanical devices.
Dimensions & Packaging: Dimensions W 525 mm x D 570 mm x H 830 mm.
Weight 4.0 kg.

The geometry was defined through ergonomic studies to ensure lumbar support and seating stability. The curved back rail follows the natural contour of the spine, while the structural proportions allow high resistance with reduced mass. The low overall weight facilitates transport, handling and spatial flexibility without compromising durability.
Tags: Chair, Gera Chair, Wood, Dinning Chair, Wooden Chair, Sustainable materials
Production Technology: The chair was developed through structural reduction and load optimization studies. Certified Brazilian jequitiba was selected for its favorable density to weight ratio, fiber stability and bending resistance, allowing minimized cross sections without metal reinforcement. Mortise and tenon joints ensure axial load transfer and torsional rigidity. The seat, composed of two bonded natural leather layers, operates as a tensioned membrane fixed beneath the frame, distributing loads dynamically while maintaining a total mass of 4 kg.
Design Challenge: The primary challenge was achieving structural integrity through material behavior rather than reinforcement. Identifying a wood capable of sustaining reduced sections without compromising resistance led to the selection of certified jequitiba. Designing a suspended leather seat functioning as a structural membrane required extensive prototyping and geometric refinement. Achieving a 4 kg solid wood chair demanded continuous structural recalibration and concealed joinery precision.
Research: This is applied design research focused on structural efficiency through material minimization. The objective was to develop a lightweight, durable chair using only wood and leather as load-bearing systems. Methodology included iterative prototyping, ergonomic validation and material performance testing. Results demonstrate that geometry and tensioned leather behavior can replace mechanical components, achieving structural stability at 4 kg. The research advances sustainable, repairable furniture production through reduction-based design logic.
Inspiration: Gera Chair originates from an investigation into structural reduction in Brazilian modernism, particularly the constructive clarity found in the work of Geraldo de Barros. The project explores how geometry, proportion and material logic can generate resistance and comfort without auxiliary mechanisms. Rather than referencing form, the design references structural intelligence, translating modernist principles into a contemporary reduction-based seating system.
Project Duration: The project started in September 2024 in Sao Paulo, Brazil. It was presented as a prototype at Salone del Mobile in Milan in April 2025. Industrial development and final production adjustments were completed in May 2026 in Uba, Brazil.
Operation Flow: Gera Chair offers intuitive interaction. Weighing only 4 kg, it can be easily moved and repositioned. As the user sits, the leather gently adapts to body weight, enhancing comfort without adjustments or mechanisms. The curved wooden structure supports the back naturally. Comfort is achieved through the behavior of materials and form rather than mechanical systems, resulting in a simple and immediate user experience.
Patents: pendind patent number
Image Credits: Photografer Alessandra Delgado Design, 2025