Graphical Construction Glossary >> Roofs and roofing. >> Roof Trusses >> gang nail truss

Gang nail truss
One of a series of trusses made with light timber sections joined together with metal nail plates.

gang nail trusses

plan of gang nail trusses

The traditional idea of a roof truss (see Queen post truss) was to have a few heavy trusses spaced well apart supporting many rafters.

Smaller roofs are made without the use of trusses, by skilled roof carpenters using a collection of separate components like rafters, ridge boards, hip rafters, ceiling joists and ties.

The gang nail system replaced all that with individual lightweight trusses that took the position of each equivalent rafter.

Go to this link for further reading on this type of roof truss.

For more detail on how nail plate trusses handle valley construction go here.

gang nail trusses

Above are details of how the metal nail plate truss systems build hips, using trusses named after and copying the functions of hip rafters and jack rafters with hip trusses (in blue) and jack trusses (green) supported on one or more truncated girder trusses.

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"What can be added to the happiness of a man who is in health, out of debt, and has a clear conscience?
Adam Smith 1723-1790

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

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Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
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