The screw jacks support the floor joists and keep them out of contact with the ground.
Proper shed floor joist support.
After cutting all lumber mark off your two band boards for joist layout at 12 on center.
Since you can span 13 with a 2 8 spf joist on 16 inch centers but you ultimately decide to only span 8 feet with your joist on 12 inch centers the weight.
Gather the proper lumber to cut your floor joists rim joists and 2 two band boards and 4x4 skids.
So what is the proper shed floor joist spacing.
Also cut your 4 x 4 skids to length.
The runners are set back from the shed frame the distance of the overhang.
The distance between the two points should be 5 feet.
To square the area measure 3 feet along one string and 4 feet along the adjacent string.
Although a 2 6 can span 11 10 a span 8 feet or longer should have a center support beam.
Set batter boards and mason line to mark the perimeter of the posts that support the runners.
The spacing of both joists and bearers will be governed by the type of structural floor decking that is used.
Providing more support and rigidity than cross bracing solid blocking is a reasonable alternative but can be an obstacle for running plumbing pipes and electrical wire between floor joists.
Cut all floor joists to proper length along with your 2 rim joists and two band boards and skids.
The amount of weight a 2 8 can support is going to depend on the span of the joist and how far apart it is from the next joist.
It should be placed at eight foot intervals between any floor joists 2x10 or longer.
Solid blocking should be used where floor joists overlap over beams.