Abstract: An easily transported and erected building structure formed in part as a vault made of interlocking voussoirs in the form of identical insulated boxes. Permanent exterior joint connectors prestress the voussoirs for strength. Easily installed interior clips join the voussiers. A floor made of insulated boxes is supported on a quickly-assembled adjustable structural frame. End walls made of insulating boxes close the ends of the vault or vaults. External cladding and interior finishing panels, corresponding generally to the dimensions of the voussoirs, are easily installed and removed. Interior raceways are formed along the joinder lines of the insulated boxes. All of the parts of the structure are designed for erection of the structure in harsh environments, without handling small loose parts.

Abstract: An insulated cold frame includes an insulated box having an upwardly extending insulated rear wall and a rigid insulated cover rotatable about a horizontal axis from a sealed position to a fully open position. A glazing cover inside the insulated cover permits light to reach the interior of the cold frame and provides a heat gain during daylight hours when the insulated cover is open. The glazing cover is rotatable about substantially a common axis with the insulated cover to provide ventilation and temperature control.