Draining off a Driveway, Paths, Patio or a Courtyard can prove to be quite a challenge but if your design has thought this process through then it can be just a matter of implementing it. Some ideas that might help are the following:
1. If you have a driveway that heads downhill to your garage then of course it is essential you have a system in place that will catch the storm water before it gets to the entrance to your garage. You may only need one right in front of the entrance or you may need several along the length of the drive. These are usually in the form of grate drains which are a trough with a grate over the top. These will extend right across the drive and or plumbed at the end into a stormwater pipe, which is then taken out to an outlet of some kind.
Driveways can be a fairly large surface area so it’s important to remember that in a storm whereas before your drive was there the rain water would just soak into the ground…now it’s not going to do that, so you have to deal with it.
2. Paths are somewhat smaller and usually you are able to deal with the rainwater by just allowing it to flow off the edge, however, sometimes you might have both edges built up along the path so this is not quite so simple, I would try somehow to have an agg line buried off the edge with some gravel or loose soil with the agg line socked. Or if this isn’t possible and you are still in the building stage then place some stormwater drainage pickups in the path, these are like the floor waste in your bathroom except for stormwater. These are then plumbed to a pipe and dealt with that way. This allows you to build up both sides of your path.
3. Courtyards and patios can often be the same as a driveway in that it can be a large area. Usually the best way for these areas to incorporate a drainage system is to have storm pits that are placed in strategic position to allow the water to be collected and removed by underground piping. However, this all has to be prepared prior to laying your hard surface, then adjusting the levels for the water to flow to the pits. It is a bit harder if your surface is already there…. If you are having water problems with that, then really the surface will need to be re-done, or at least cut into to lay these pits and pipes etc. Just take not of where the water is lying after some rain and there is where you will place your pit.
The most important thing to remember is that water lying around the area is not a good thing, it will encourage mould and mildew to grow, which will become very slippery to walk on. Dealing with these drainage issues should be high on your priority list for your landscaping.