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Roof trusses

Web (truss web)

Webs are the internal members of a truss that connect the top and bottom chords and divide the truss into triangles.

Also known as webs, web member, truss web, diagonal, strut

Webs are what make a truss a truss: by triangulating the space between the chords they turn the frame into a rigid structure. Depending on their position, each web works in tension or compression, carrying load from one chord to the other.

The web pattern gives many truss types their name: a W in the fink truss, radiating members in the fan truss, verticals and diagonals in the Howe truss.

Apex (ridge) Nail plate Top chord Web Bottom chord Heel Overhang Span
The parts of a typical fink (W) roof truss. Every joint is held by a nail plate.
Related terms
Top chordThe top chord is the upper, usually sloping member of a truss that forms the roof slope and carries the roof covering. Bottom chordThe bottom chord is the lower member of a truss that ties the two ends together and usually carries the ceiling. Fink trussA fink truss is the standard pitched roof truss, with internal webs arranged in a W; it is the most widely used truss type for houses.
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