America (traditional; North Asia?) Dugout, zemlyanka (Russia), elsewhere (pre-modern) PLACE TECHNIQUE COMMENT 10m earth walls, timber/ rammed earth, 1m thick, eaves prevent solar ingress, local materials Ice-made structure, spherical construction Cone-shaped, skin-and- wood structure Partly/completely bermed (earth-bound) structure Thermal mass principle, local materials (using available materials for binding), dense housing concept Paradigm of local materials, optimisation of surface area/volume ratio; ice can be natural/essential material, or frivolous material Natural ventilation, local materials/ resources, portable, carbon neutral, re- usable building material, climate adaptable, shape (cone) wind-resistant, biodegradable, movable openings, localized heating Inherent insulation, thermal massing, land-use efficiency, landscape integration, inherent interior design/ furniture options; vs water seepage, humidity, ventiliation, flexibility, lighting Saturday, February 2, 13