Make sure you are wearing appropriate safety protection throughout the entire process.
Depths required for concrete hard standing:
Driveways and garages: 100mm (minimum)
Heavy vehicles: 150-200mm
Commercial yards: 200mm (minimum, plus additional sub base)
STEP 1: Excavation
Excavate to the depth needed, depending on how thick the concrete needs to be.
Level off any soft areas and fill these soft areas with compacted sub-base material to provide a good, firm sub-base. Edgings and kerbs should be put in at this point.
STEP 2: Sub-Base
On good ground and when the drive will be used for domestic purposes, a sub-base is not necessary. Instead, lay a damp proof membrane over the sub-grade. The concrete can be applied directly onto this membrane.
On driveways which will hold heavier vehicles or on poorer ground, lay a geo-membrane over the sub-grade before laying a compacted granular sub-base.
Cross section of concrete hardstanding
STEP 3: Laying the Concrete
Concrete should always be laid on to a damp proof membrane, whether that is on top of the sub-grade or on top of the sub-base.
Make sure any joins in the membrane are taped down with an overlap of at least 350mm. The concrete will need to be contained either through existing barriers such as walls, or through the construction of a permanent (walls or kerbs) or temporary barrier. The use of timber shuttering is an effective temporary method.
STEP 4: Levelling the Concrete
Level the concrete out with a rake or shove and then use a straight-edged timber to tamp down the concrete.