Drive stakes to mark out the path of the drain and measure the change in elevation between each pair of stakes. To do this, tie a string to the base of the stake nearest the beginning of the drain, stretch it to the next stake, put a line level on the string and center the bubble...
Excavate the rain garden and place the soil on the downhill side to build a berm and retain water. Turn the base of the garden deeply (2-4 feet). If soil texture is high in clay, add compost improve in drainage. Then level out the base so that water spreads evenly across the rain ...
How to build a French drain for a patio: Dig a channel 500mm deep. The width of your trench should also be wide enough to fit your French drain in, as well as at least 25mm either side. Ensure your channel maintains a fall of 1 to 80, checking with a spirit level for accuracy. ...