Footings

There is no one standard footing. The size and depth will be determined from the ground conditions, soil conditions and if you have any trees near or on the footings. Generally a trench fill foundations 600mm wide but the depth would be needed to taken down when finding firm ground, this as said would need to be determined by the structural engineer and to be approved by building control before pouring concrete. Kind Regards Avion Homes

These are generally dug to a depth of 1m deep and 600mm wide, however since cavities got wider to 150mm then really the trench should be made a bit wider. the footings would need to be confirmed via building control first after digging. things that can alter the depth would be trees near by, the plasticity of the soil if clay, and ground type. thanks hanley smith building (worcestershire)