16x20 shed plans with dormer include the following: materials list: the shed plans come with a complete materials list that is broken down by parts of the shed. foundation the shed plans include plans for a wood rail foundation; floor: 2x6 floor joists with 3/4" floor sheathing. floor loft: 2x8 floor joists with 3/4" floor sheeting. walls framing: 2x4 framing at 16" on center with a double top. If you need extra storage space these shed plans can solve that problem. these free shed plans are for different designs and are simple to follow along. free shed plans. shed designs include gable, gambrel, lean to, small and big sheds. these sheds can be used for storage or in the garden. see the list of free plans below. lean to shed plans. Shed plans 16x20 shed plans 16x24 shed plans 8x10 shed plans 8x8 shed plans nz shed plans pdf shed plans uk shed plans with loft shed plans with porch shed ramp plans shed plans free shed.