Http://www.askthebuilder.com founder, tim carter, demonstrates in this diy shed series how to build a wood frame floor using treated lumber and 6 x 6 wood po.... How to build a shed - part 1 building the floor - duration: 22:52. houseimprovements 2,713,985 views. 50 free backyard shed ideas & garden plans that will help you diy a shed. Diy sheds - lots of designs. 15 free shed building plans. many of them will include a material list and are super easy to follow. get your garden or storage shed started with the help of these instructions. remember to check with your local building authorities for the requirements and permits you may need..