Included in your download for these barn shed plans is a nice sized loft, 6' roll up shed door, 3' side entry door of the 6' wide side porch which can be used for just taking it easy in your favorite rocking chairs, or can even be used for storing firewood.. The gambrel barn roof shed plans will help you build the perfect gambrel shed in your yard or garden. the gambrel shed is both beautiful and useful. the roof design makes your storage or work shed look like a country barn. inside that same roof creates a large attic space for increased storage, almost doubling the floor space of the shed.. This step by step diy project is about 10