Types of trusses
Architectural trusses
Architectural trusses are left exposed inside a building to create a visual impact. They are constructed from relatively large cross-sectional timbers which are bolted together. The spacing between trusses generally ranges from three to six metres, however they may be spaced at greater distances depending on the individual design.
Gang nail trusses
Gang nail trusses are designed and manufactured using a licensed system. The trusses' members are relatively small, usually 90 - 150 mm deep. These trusses are spaced closer together than architectural trusses at 600 - 1,200 mm spacing depending on their design and what they are supporting. Due to the appearance of the gang nail plates used in their construction, these trusses are generally concealed. They span distances up to 15 m and no on-site modification should be made as this affects their performance.
