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Rezvan Design
Bronze Threshold
← Index005 · Material Study · Dusk

Tehran, Iran · 2025 · Studio research

Bronze Threshold.

Location

Tehran, Iran

Year

2025

Typology

Material Study

Status

In Construction

Area

·

(i) · Brief

An ongoing inquiry into the joint as ornament · board-formed concrete and oxidised bronze in slow conversation.

An on-going material study installed in the studio courtyard: forty full-scale joint conditions tested in concrete, bronze, and lime plaster. The piece is rebuilt every season.

We are interested in the ornament that emerges from honest assembly · the chamfer that the welder leaves, the patina that the rain writes, the shadow that the joint casts at four in the afternoon.

The work has no client. It has only weather, and time, and the slow attention of the people who walk past it.

(i·b) · Concept ↔ Built

From the first line to the last stone.

Concept · Section A·A
Built · Plate I
Scale 1 : 200
Drag to compare
◀ ▶

Drawing N° 01 · Section A·A · 2025 · drag to reveal

(ii) · Solar Study · live

How the year moves across the façade.

Drawing · SOL · 01

Solar study

Latitude
35.70° N
Façade
0° (N)
Site
Tehran, Iran
Season
Summer · day 172
Solar hour · 13:00
Altitude · 72.1°
Azimuth · 230.8°

Altitude

72.1°

Azimuth

231°

Incidence

·

Irradiance

shaded

Hour of day13:00
05:0013:0020:00
Day of year172 · Summer
JanAprJulOct

NOAA solar position · ±0.5° · drag the sliders to walk the year

(iii) · Stratigraphy · 1:5

A wall, read as a geology.

Detail · STR · 02

Wall stratigraphy

Total thickness

252 mm

Mass · m²

597 kg

Embodied CO₂

105 kg

Scale
1 : 5

Bronze Threshold · build-up

  • 01Hand-troweled lime
    16 mm24 kg/m²3 co₂
  • 02Board-formed concrete
    180 mm432 kg/m²52 co₂
  • 03Bronze armature
    12 mm106 kg/m²36 co₂
  • 04Air cavity
    40 mm0 kg/m²0 co₂
  • 05Bronze sheet, patinated
    4 mm35 kg/m²14 co₂

(ii) · Materials

  • 01Board-formed concreteThree formwork patterns, sandblasted
  • 02Oxidised bronzeLiver-of-sulphur patina, waxed
  • 03Hand-troweled limeThree pigments, six finishes

Drawing · Section A-A

(iv) · Credits

  • Lead

    Sina Rezvani

  • Material Research

    Studio team

  • Photography

    Studio archive

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Hinterland Tower