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.
Development of non-profit housing in the United States
Housing trust funds (HTFs) are established at all levels of government (national, state, county and local). These funds are created specifically for the provision of affordable housing to low- and moderate-income households and are based on collected revenue sources. HTFs generally have far fewer restrictions than other forms of public financing and may be used for a wide range of development activities. For example, eligible activities under the National Housing Trust Fund include but are not limited to: property acquisition, development/rehabilitation costs, construction costs, and some operating expenses.