Forbidden Vernaculars

In the spring of 2020, a dormant construction site in Ljubljana became the setting for the production space Krater. Here, mobile workshops enable on-site production methods with local matter, such as plants, earth and fungi. Despite the successful reception of Krater, we cannot overlook the fact that the use of natural construction materials in Slovenia is greatly challenged by costly certification processes*, preventing these resources from being widely applied. As the legislation currently stands, local material landscapes have become forbidden vernaculars.

* In June 2022 new construction law legalised the use of uncertified construction materials in simple, small-scale buildings.

Cover photo: Aljaž Plankl / Krater

Team

Krater

Mentors

Atelier LUMA – Daniel Bell and Marie Vernay
BC Materials – Jasper Van der Linden

Website

Krater.si

Instagram

@kratercollective

Team Members

Rok Oblak
Gaja Mežnarić Osole
Altan Jurca Avci
Andrej Koruza
Sebastjan Kovač
Primož Turnšek
Anamari Hrup
Eva Jera Hanžek
Gaja Pegan Nahtigal

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Researching materials at Krater

Krater
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A short insight into the research stage at Krater, a temporary production site that emerged from an abandoned, crater-like construction site near the city centre of Ljubljana.

The design collective Krater, in dialogue with Atelier LUMA and BC Materials, has researched rammed earth architecture and locally sourced building materials to create a teahouse that is situated on the crater-like construction site in the heart of Ljubljana occupied by Krater.

In response to the ongoing climate crisis and biodiversity loss, Krater’s team members joined forces with cutting edge practitioners from Atelier Luma and BC Materials to pose an important question: How could Krater become a landscape-based forum to discuss the accessibility of sustainable materials in Slovenia?

Materials such as clay, wood or straw bales are either imported from abroad or used in construction illegally. The rich resources of an urban site enabled material experimentation with wild clay, invasive plants and gravel as construction materials for building a site-specific rammed earth pavilion for BIO27. The new space will host a series of public talks with practitioners and decision-makers, who will all be served herbal tea in wild clay vessels sourced from the urban site. Discussing the legal, social and ecological implications of designing with local materials will hopefully support a fresh start in making these forbidden practices part of the vernacular again.

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Krater section of 
BIO27 Exhibition at MAO

Photo: Klemen Ilovar / MAO

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Prototyping: Legal toxicity, prohibited nature

Rammed earth cube: wild clay, gravel. Cob cube: wild clay, sand, Canadian goldenrod. Krater, March 2022 – ongoing

Photo: Lin Gerkman

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Building with Rammed Earth International Workshop

With Atelier LUMA and BC Materials, June 2022

Photo: Lin Gerkman, Amadeja Smrekar

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Objects – Why can’t we design with mushrooms and wild clay?

Rok Oblak and Primož Turnšek Krater cup: wild clay; Capsule: mycelium; Krater; Pests, instead of local resources, Andrej Koruza; Wild herbs tea: Japanese knotweed rhizomes; Burek platter: Black locust wood; Seating pad: Canadian goldenrod, Japanese knotweed

Photo: Klemen Ilovar / MAO

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Public Programme

Pop-Up Shop at Plečnik’s Kiosk and Building with Rammed Earth Children’s Workshop

Photo: Rok Oblak, Lin Gerkman / MAO

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Building of the rammed earth tea pavillion

Concept: Gaja Mežnarić Osole, Rok Oblak
Design and pavilion build: Rok Oblak, Andrej Koruza, Altan Jurca Avci, Jasper van der Linden, Daniel Bell, Aline Dalgleish
Texts: Gaja Mežnarić Osole
Project assistants: Gaja Pegan Nahtigal, Sebastjan Kovač

Photo: Amadeja Smrekar