Agriculture and horticulture offer many challenges when it comes to planning buildings and structures, some tend to be specialised and need to be built to a very high standard in order that they function properly for their design life. These industries offer a very hostile environment to buildings with corrosive and difficult to handle materials such a silage, dairy effluent and bulk fertilisers. Other challenges are offered with such things as wash water from processing. There is now considerable regulation around these activities and standards of building and installation have to be met. There is also a requirement for maintenance that need to be met as failure (as in the case of dairy effluent) can have an immediate polluting potential.