Graphical Construction Glossary >> Roofs and roofing. >> Roof Trusses >> Aisled Barn

Aisled Barn
A type of roof truss construction that has aisles down the side to increase the span
Arcade post, Aisle post
1.)A post that supports an exterior arcade, or inside a church it supports the structure that allows extra space at the side of a central aisle. 2.) In roofing, A post at the side of a cruck truss to share the load and shorten the span. Usually seen in pairs in aisle barn construction.

The great barn at Great Coxwell

Interior photo of Great Coxwell Barn. A large 14th century barn in Oxfordshire, England.
Photo thanks to Wikipedia. Go there for a larger version if you wish to copy it.

In the photo above it is easy to see where this style of roof construction gets it's name from. At first glance it may seem an awkward layout, but in actual fact using smaller timbers,a lot more space is provided, than may have been possible with larger expensive timbers and construction methods.

The Arcade posts can be seen sat on masonry plinths. Also of note are the horizontal bracketed struts, with the bottom of the brackets sat on timber members bedded into the masonry.

Great Coxwell barn interior

Another interior photo of the Great Coxwell Barn.
Photo thanks to Wikipedia. Go there for a larger version if you wish to copy it.

In the photo above we are looking towards the side of the building and the strut braces to the arcade posts are easily seen. The posts themselves support double collar ties that in turn support a king post to the ridge.

Other side bracing can be seen under the common rafters to the first purlin.

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Adam Smith 1723-1790

"When we build, let us think that we build for ever."John Ruskin 1819-1900

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