Timber Frame Design


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A basic overview of timber frames and timber frame design.

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Timber Frame Design

  1. 1. Project Timber Frame: Design<br />A general overview of timber frame design<br />Putting the pieces together<br />Annemarie Mitchell<br />Legacy Timber Frames Inc<br />
  2. 2. The Timber Frame: A brief summary<br />Timber frame vs. log construction<br />Timber Frame vs. Post & Beam<br />Timber frame components<br />Timber frame types<br />The Design: A place to start<br />The design process<br />Design considerations<br />Budget<br />Lifestyle<br />Building site<br />Putting it on paper<br />
  3. 3. Timber Frame vs. Log Construction<br />In timber frame construction, the timbers are vertical posts and horizontal beams.<br />Timber frames need a separate enclosure system on the outside of the frame<br />In log construction, the logs are stacked horizontally on top of each other to create the exterior walls. <br />The logs are the exterior and interior wall surface<br />
  4. 4. Timber Frame vs. Post & Beam<br />Post & beam construction consists of posts & beams<br />Can be connected by bolts, metal, nails, or any other structural means<br />Timber Frame is post & beam construction connected exclusively with wood joinery and wooden pegs<br />
  5. 5. Timber frame components<br />Bents<br />The timber frame section that defines the structure<br />Bays<br />The space between the bents<br />
  6. 6. The Basic Frame<br />
  7. 7. Timber Frame Types<br />Principal rafter/ purlin roof trusses<br />Can allow for clear spans in cathedral areas<br />King post truss<br />Hammer beam truss<br />Other styles of truss<br />Common rafter roof systems<br />Can give you living space in the roof area<br />Ridge beam, center post<br />Queen post frame<br />Hybrid construction<br />A mix of timber frame and other framing methods<br />
  8. 8. King Posts TrussPrincipal rafter/ Purlin<br />
  9. 9. Hammer Beam TrussPrincipal rafter/ Purlin<br />
  10. 10. Principal rafter/ purlinOther truss styles<br />
  11. 11. Ridge Beam/ Center PostCommon Rafter system<br />
  12. 12. Queen PostCommon rafter system<br />
  13. 13. Hybrid ConstructionA mix of timber frame and other<br />
  14. 14. The Design Process <br />A full set of blueprints/ construction drawings are needed prior to construction<br />Allow enough time for the design process <br />which can be about 4-6 months or more for a custom design<br />The more thought out your design is, the easier and more cost-effective the construction will be<br />Each timber frame company handles design differently<br />Stock plans to choose from<br />In- house design services<br />Architects they work with<br />Work with your architect/ designer<br />Choose your timber frame company before completing design<br />Each timber frame company has different framing systems and building requirements<br />If you have a timber frame company do the design, copyright laws prevent you from taking the plans to another timber framer to build that design<br />The more information you can bring to the design process, the better<br />Don’t worry about drawing floor plans; a bubble diagram or even a list of your needs is a great place to start<br />
  15. 15. Design Considerations: Budget<br />Establish your budget early, and be open about the budget with all your construction trades.<br />Simple roof lines are more economical than complex roofs<br />
  16. 16. Design Considerations: Lifestyle<br />Lifestyle is the key consideration for design.<br />How many people will be living in the house?<br />How much and what type of entertaining?<br />What are the present and future needs for space?<br />What are the sleeping habits of each of the household? <br />What is a typical day of each of the members? How will that change over the years?<br />Are there any pets? If so do they require special space?<br />Are there any hobbies that require space or separation?<br />
  17. 17. Design Considerations: The Site<br />Your site will determine some aspects of your design:<br />The size and shape of the site and distance required between the road/ neighbors and the building<br />North, south, east, west orientation of the house <br />Locating the house to maximize the views<br />The lay of the land: a flat site, or a slope for a walk-out basement<br />Local building codes and restrictions can limit size, height , colors, etc.<br />Access to the road, driveway location will dictate garage and house placement<br />
  18. 18. Design Consideration: StyleTwo stories<br />
  19. 19. Design Considerations: StyleOne story<br />
  20. 20. Design Considerations: StyleA Story and a Half<br />
  21. 21. Valley or Hip Roof<br />Valley with dormer<br />Valley is a cross gable roof<br />Hip roof<br />Hip is where there is no gable, just roof<br />
  22. 22. A Place to Start Your Design<br />Have each member of the household write down a “must have” list and a “wish” list of everything that is important to them.<br />Think about how you live, and which rooms are the most used.<br /> Measure the rooms that work, and don’t work, in your present home<br />Begin a file with clippings from magazines & take photos of homes in the style you like<br />Write down anything you can think of about the spaces you’d like<br />Think about how your budget and site will lend themselves to the design.<br />Don’t worry about having drawings before talking with timber frame companies or designers. They can help you put your thoughts on paper—it’s what they do every day. <br />
  23. 23. The Bubble DiagramPutting it on paper<br />Once you have an idea of the spaces you need, a bubble diagram is a great next step.<br />Make a circle of paper for each room or space you need. Make the circle big if you need lots of room, and small if you don’t. Don’t worry about scale.<br />Cut out the circles, Sometimes it helps to make them different colors.<br />For each story of the house, place the circles on a large paper in the general area you want them to be. They can overlap. <br />Place the rooms that need to interact (like kitchen & dining) next to each other, or just draw a line connecting them.<br />When you find an arrangement you like, you have the start of your home design.<br />
  24. 24. Questions<br />Please feel free to ask any questions<br />Contact: Legacy Timber Frames Inc<br />691 County Rd 70<br />Stillwater, NY 12170<br />Phone: (518) 279-9108<br />Fax: (518) 581-9219<br />E-mail: info@legacytimberframes.com<br />