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Pole Barn, Garage, Post Frame Building Glossary
Bottom Chord The bottom board of a truss that spans the width of the building.
Bottom Chord on Truss
Clear Span - Indicates that the roof trusses do not require any center support inside the building. The trusses are fully supported by the eave sides of the building.
Clear Span
Eave Side The side of the building that the rain spout would be attached to. The roof trusses rest on and are supported by the eave sides.
Eave Side
F&J trim - A single trim piece that is the combination of J channel & F channel. J channel is used to finish the siding ends. F Channel finishes the soffit ends.
F & J Trim
Face Board - A board that is nailed to the tail of the trusses, running the length of the building. It helps to support the ends of the trusses and is also used to fasten spouting to the building.
Face board on pole bulding
Fascia Metal trim that covers the face board (see above).
Fascia trim on pole building
Gable End - The gable end of the building is the side that shows the rook peak. Only the two end trusses will rest on the gable ends. All of the other trusses on the roof will rest across the Eave Sides.
Gable End
Gambrel A roof truss style that has 4 angles to it. This style is used to give an attic more head room, also known as a "barn style" roof.
Gambrel Roof Truss
Hurricane Ties - Also know as Hurricane Clips. A metal bracket used to connect the top board of the building to the truss. The hurricane ties secure the roof from lifting up in high winds and are required by almost all regional building codes.
Hurricane Clips (or Ties)
Jamb The sides and head board frame of an opening, it is most often used in reference to doorways.
Door Jamb
Knee Bracing - Used to tie the roof trusses to the posts of the building for additional stability. The knee bracing is nailed to the side of the post and angles up to meet and be nailed to the truss.
Knee Bracing
Lateral Truss Bracing - 2x4s are attached in a diagonal position across the truss frames, running the length of the building. The lateral braces help to keep the trusses from falling over during and after constructions. Complete bracing details are included with our truss installation instructions.
Lateral Truss Bracing
Perma Column A concrete and metal form that is cemented into the ground. Posts are then attached to the Perma Column. This helps eliminate the potential for any post rotting.
Perma Column
Rat Guard A concrete and metal form that is cemented into the ground. Posts are then attached to the Perma Column. This helps eliminate the potential for any post rotting.
Rodent Guard
Ridge Vent Greatly reduces heat build up in the ceiling peak by allowing air to vent out. The ridge vent is then covered by a ridge cap which prevents rain from entering through the vent.
Ridge Vent
Roof Purlin - The purlins are 2x4s spanning across the trusses, placed 2 apart. The purlins help with truss stability and are what the metal roof gets attached to.
Purlins on Truss
Skirt Board This is the bottom board of the building, The treated lumber skirt board ties the posts together at the bottom of the structure, and is also where you attach the rat guard. In addition, the skirt board makes up the form for a concrete floor if you choose to pour one.
Skirt Board
Snow Guard - A flat plate of metal or plastic screwed to the metal roof in an upright position to keep snow from sliding off the roof in masses.
Snow Guard for Metal Roof
Top Chord The top board of the truss. This is where the purlins and plywood are attached.
Top Chord on Truss
Translucent Panels Siding panels that allow natural light into the building.
Truss Block - A small piece of lumber nailed to the top of the truss carrier board (see below). The blocks are attached truss thickness apart so that the trusses can be set between them. This aids in stabilizing the trusses as well as working as a guide during installation.
truss block
Truss Carriers The top board attached to the interior and exterior sides of the posts on the structures eave sides. This is where the trusses rest.
truss block
Uplift Wind force that may raise a building off of its foundation, or raise the roof off of the building.
Wainscotting Siding of a different color than the primary siding that is applied to the bottom portion of the exterior walls. Matching trim is used to divide the two colors.
Wall Girt The wall girts are the 2x4s running parallel around the walls of the building 2 apart, they tie the post together and are the boards needed to fasten the metal to the building.
Wall Girt
Web Pieces of lumber that cross between the top and bottom chord of the truss. The web helps to brace and support the structural integrity of the truss.
Truss Web
Y Bracing - Bracing used to stabilize the building by attaching a short 2x onto the post at one end and angling it and attaching the other end of the 2x to the header of the building, by doing this on both sides of the post it form a Y.
Y Bracing
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44 Gettysburg Street
Arendtsville, PA 17303
Phone: 1-888-261-2488