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A · B · C · D · E · F · G · H · I · J · K · L · M · N · O · P · Q · R · S · T · U · V · W · X · Y · Z   entire Web this site wall A vertical structural element that holds up a roof, encloses part or all of a room, or stands by itself to hold back soil. From the point of view of energy efficiency, vital considerations are wall insulation and wall orientation. Related category    • BUILDING AND ARCHITECTURE Also on this site: Encyclopedia of Science Transport Concepts & Designs (partner site) BACK TO TOP