Structural insulated panel

from wikipedia:

Structural insulated panels (or structural insulating panels), SIPs, are a composite building material. They consist of a sandwich of two layers of structural board with an insulating layer of foam in between. The board is usually oriented strand board (OSB) and the foam either expanded polystyrene foam (EPS), extruded polystyrene foam (XPS) or polyurethane foam.

SIPs share the same structural properties as an I-beam or I-column. The rigid insulation core of the SIP performs as a web, while the OSB sheathing exhibits the same properties as the flanges. SIPs replace several components of conventional building such as studs and joists, insulation, vapor barrier and air barrier. As such they can be used for many different applications such as exterior wall, roof, floor and foundation systems.

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Folly

from wikipedia:



In architecture, a folly is a building constructed strictly as a decoration, having none of the usual purposes of housing or sheltering associated with a conventional structure. They originated as decorative accents in parks and estates. "Folly" is used in the sense of fun or light-heartedness, not in the sense of something ill-advised.

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