The insulating barrier of a panel including has a first stratum and a second stratum, each having a plurality of ridges that face each other, and run athwart of each other. Clearance between at least some adjacent pairs of the ridges provide a mechanical chase that reaches across at least most of the panel. A cladding overlaying at least one side of the insulating barrier is denser than the barrier. The mechanical chase is in the form of a groove through which a utility feed can be routed when the panel is to be mounted in a building.

A building structure comprising a main steel frame structure 3 and roof 41, wall 74, window and door portions 137, 166, 142, 152 directly or indirectly attachable to the main structural support and are configured, in use, to combine to form a thermally insulative barrier 34, 37, 21 between the interior of the building and the external atmosphere, the barrier also acting to at least partially inhibit travel of air therebetween.

The insulating barrier of a panel including has a first stratum and a second stratum, each having a plurality of ridges that face each other, and run athwart of each other. Clearance between at least some adjacent pairs of the ridges provide a mechanical chase that reaches across at least most of the panel. A cladding overlaying at least one side of the insulating barrier is denser than the barrier. The mechanical chase is in the form of a groove through which a utility feed can be routed when the panel is to be mounted in a building.

A building system may include at least one diaphragm beam having opposite ends connected to an external structural frame of a building, at least one pre-assembled floor-ceiling panel adjacent to a vertical side of and coupled to the diaphragm beam, and at least one pre-assembled wall adjacent to a horizontal side of and coupled to the diaphragm beam, The diaphragm beam may be filled with a mineral-based material, such as concrete. The one or more pre-assembled floor-ceiling panels may each include a plurality of joists extending perpendicular to the diaphragm beam, a floor-panel including at least one metal layer attached to the joists on a floor side of the pre-assembled floor-ceiling panel, and a ceiling panel including at least one layer comprising mineral-based material attached to the joists on a ceiling side of the pre-assembled floor-ceiling panel. The one or more pre-assembled walls may include interior and/or exterior walls of a building.

In various example embodiments, a multi-layer building panel structure is described, comprising an interior and exterior panel layer, waterproof channel layers comprising adjacent parallel channels running from input and output manifolds fed by a remote fluid source. Each set of input and output manifolds may be configured to serve a zone of channels within the waterproof channel layers. Hot or cold fluid is pumped through the channel layers in order to heat or cool a space within a room of a building. The multi-layer building panel structure further provides structural support for a building and may be a wall, ceiling, or floor.

A construction element of a null-energy system includes a body on which the construction element can further include a porous material compartment with porous material to store water and evaporate the stored water outwards from the porous material through a holding layer on the opposite side of the porous material compartment to the body. The null-energy system uses a construction element of null-energy system as embodied therein.

An environmental system is disclosed. The environmental system is configured to provide varying degrees of ventilation and shading. In addition, the environmental system can include provisions for collecting rainwater and holding greenery. The system can includes a mounting structure, a set of frames, a plurality of bars, skins, beams, and optionally one or more plants.

A construction element of a null-energy system includes a body on which the construction element can further include a porous material compartment with porous material to store water and evaporate the stored water outwards from the porous material through a holding layer on the opposite side of the porous material compartment to the body. The null-energy system uses a construction element of null-energy system as embodied therein.