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Glossary and Illustrations
  JOINERY
 
Typical Joinery Joinery is the most structurally astonishing and complicated aspect of timber framing. In its simplest form, joinery is the art of connecting large timbers to one another by Mortise and Tenon.

Mortise and TenonA Mortise is a cavity carved into a beam that will receive a Tenon. The Tenon is the reduced end of a beam that inserts into the mortise. A wooden peg is then driven through both assembled members to lock them in place.

 

MortiseTenon
  BENTS

Bents are like slices of bread that make up a loaf. Their major function is to transfer the roof’s load evenly throughout the frame to the foundation.

 
     
  Bent  
     
 

Bents are primarily composed of post, tie beams, and trusses (rafters). To stiffen them and keep bents from racking braces, collar ties, and struts are added.

 
     
Frame view
     
 

Finally, to connect each bent of a frame together, connecting girts, top plates and ridge beams are used. See illustration

 

 
     
  TRUSSES

Trusses are the triangle forms that transfer the weight from the roof to the rest of the framework or bents. Depending on the span that they cover or the homeowner’s preference, trusses can be designed several ways.

 

 
  Simple Truss
Simple Truss
 
King Post Truss Queen Post Truss
King Post Truss   Queen Post Truss
  Hammer Beam Truss
Hammer Beam Truss
 
     
   
  STRESS SKIN PANELS
 
       
 

Are like a well made sandwich comprised of an Oriented Strand Board (OSB) exterior shell, a foam insulated core, and a gyp-rock face, all glued together by an adhesive sealant. Another form of panel called a structural panel, which is made up of two OSB sides adding extra strength to areas where it might be needed.

 

  Structural Insulated Panel
         
Schematic of Stress-Skin Panel  

The advantages of using these insulated panels over conventional methods of exterior wall framing are as follows. Panels save time and unnecessary expenses because the panels come prefabricated and ready for installation. They are energy efficient, lowering your heating and cooling cost over 30%. Structural panels also give added strength to the over all frame. They are able to resist loads caused by wind, snow and seismic activities. Furthermore, all electrical wiring can be passed through channels that are prefabricated in the foam. Feel free to visit www.plastifab.com for more information on structural insulated panels.

  Typical Joint Design Options of Stress-Skin Panels
         
  Covering a Timber Frame with Stress-Skin Panel  
 
Covering a Timber Frame with Stress-Skin Panels
 
 


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