Gable shed building plans 10x12 gable storage shed. these gable shed plans are for a shed that is so easy to build, and your new shed will have lots of storage. click here to see a sample of these gable shed plans. roof trusses which you pre-fab with plywood gussets.. 10x12 gable roof storage shed. the gable roof shed is the most common style of shed. the 10x12-g gable design has a lower wall height that is 6'-7" tall. this saves a bit on siding and construction labor because the siding is able to go from the top of the wall plates down to below the wall bottom plate.. This step by step diy project is about 10