Foundation (engineering)
Foundations are designed to have an adequate load capacity depending on the type of subsoil/rock supporting the foundation by a geotechnical engineer, and the footing itself may be designed structurally by a structural engineer. The primary design concerns are settlement and bearing capacity. When considering settlement, total settlement and differential settlement is normally considered. Differential settlement is when one part of a foundation settles more than another part. This can cause problems to the structure which the foundation is supporting. Expansive clay soils can also cause problems.
Open building
Base building: the part of a multi-tenant building that directly serves and affects all occupants. In conventional North American practice, base buildings are constructed by speculative office building developers, leaving choice and responsibility for the reminder of the building–the fit-out - to occupants. The base building normally includes the building's primary structure; the building envelope (roof and facade) in whole or part; public circulation and fire egress(lobbies, corridors, elevators and public stairs); and primary mechanical and supply systems (electricity, heating and air conditioning, telephone, water supply, drainage, gas, etc.) up to the point of contact with individual occupant spaces. Base buildings provide serviced space for occupancy; Supports is another term for base building.