The simple post and beam line of building plans offer much more than just the structural frame plan. In addition to everything provided in our structural frame plans, we go above and beyond to show foundation plans, siding and roof area takeoffs, a trim schedule, door and window schedules, section views, trim details, and other related details. This 20' x 20' Barn is perfect for any property. It uses simple mortise and tenon joinery making it easy to cut for anyone with a few common tools. It features two 8' x 8' garage doors on the front which are ideal for storing cars or other large equipment. It has a standard "man door" on the right side along with a 30"x30" window. The left and back walls each feature two 30"x30" windows as well. The frame is made up with 8x8 posts, 8x10 plate beams, 8x8 tie beams, 4x8 rafters, 4x6 overhang rafters, 2x8 collar ties, 4x4 wall plates, 4x6 wall braces, 3x8 sill plate covers, 4x6 door posts and a 3x10 ridge board. It also has an optional gable truss accent to add a timber frame element to the exterior which is made up with all 4x6 components. Let us help you get started today with these plans!


Building Specifications:

  • Size: 20' x 20'
  • Total Square Footage: 400


Frame Specifications:

  • Joinery: Mortise and Tenon
  • Posts: 8x8 and 8x10
  • Plate Beams: 10x10
  • Tie Beams: 8x8
  • Rafters: 4x8
  • Wall Braces: 4x6
  • Wall Plates: 4x4
  • Door Posts: 4x6
  • Collar Ties: 2x8
  • Ridge Board: 3x10
  • Sill Plate Covers: 3x8
  • Truss Post: 4x6
  • Truss Web: 4x6
  • Bottom Chord: 4x6
  • Overhang Rafter: 4x6
  • Roof: Main: 8 Pitch
  • 1st Floor Wall Height: 9'-1 1/2"


Plan Specifications:

  • Rendering
  • Elevations
  • Material List
  • Foundation Layout
  • Post/Wall Layout
  • Wall Layouts
  • Rafter Layout
  • Section View
  • Fastening Details
  • Trim Details
  • Details
  • Single Beam Drawings

20 x 20' Simple Post & Beam Barn

SKU: SMT8G2020
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