A shed loft, or attic in your shed can be used for a multitude of purposes! of course, the most obvious is using it for increased storage. shed loft in a 12x16 barn shed. my 10x12 gable shed plans instant pdf download comes complete with shed plans, detailed gable shed building guide, materials list, email support, and 3d model.. 12x16 shed plans, with gable roof. plans include drawings, measurements, shopping list, and cutting list. build your own storage with construct101. also, i made loft storage in the rafters of the front and back 5′ or so and left the middle 6′ or so open for access to the lofts and better lighting. i left the lower cords out in the. 12x16 lean to storage shed plans include the following. materials list:the plans come with a complete materials list that is broken down by parts of the shed. foundations: there are 5 different foundations are included in the plans; wood skid, concrete slab, concrete block pier, poured concrete pier and precast pier. floor: 2x6 floor joists at 16" on center with 3/4" floor sheathing..