Another great project for the lake house, this canoe boat rack plans set is from our free shed plans collection. make it easy with our step by step guide. this is. Instant access to 518 different plans – from small wooden boat plans to large sailboat plans – free boat plans. How to build wood joist floor plans . or . or. how are floors constructed? floors may be based on shafts or joists or use structures like pre-assembled empty center.