As mentioned above concrete is the best option for a garage.
Concrete piers for shed base.
Concrete offers the best support for vehicles.
Shed dimensions determine the number of piers you need.
Your concrete piers must be a set depth to go below the frost line in your area.
Increase to 12 piers with 6x6 posts.
The number of piers needed to properly support your shed is based on the overall size of the shed you plan to build.
If your shed has 3 runners the middle runner can just be supported with the blocking at equal intervals usually about every 4.
Before the concrete hardens in the piers set pier or post ties and align in place.
Find deck blocks at lowe s today.
Years of driving a vehicle in and out can cause a building on gravel to start to shift.
This design is normally made up of seven or more concrete piers that are made by digging 4 feet down and pouring concrete into a mold placed in the hole.
Once the piers have cured beams can be set in place on the piers or pier and post and leveled with shims.
If you re only installing a shed concrete piers at each corner combined with a gravel foundation may be satisfactory.
Usually on the shed floors i build i will have a minimum of 2 concrete foundation piers up to 4.
Concrete piers for sheds may be necessary if the shed site has considerable slope.
The concrete piers with a pre attached wood nailer must be buried into the ground while the lumber ones must be placed in a hole and secured in place with cement.
A lumber frame sits on top of these piers.
The shed is then attached to the wood posts usually with steel connecting plates or post brackets.
An 8 x12 shed would use 6 piers 3 per long side.
Then i will use the blocking described above spaced evenly between the anchors about every 4 or so.
Unlike setting a shed on blocks which are also built in piers concrete piers go fairly deep into the ground and are a permanent foundation.
Concrete piers are built by digging holes inserting tubes called sonotubes and pouring them full of concrete.
You must set the posts on top of concrete with a post base to protect from rot.