jack rafter

(Building) a short rafter used in a hip roof

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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References in periodicals archive

If you're making a jack rafter, you also need to mark the underside of the 2x4 along the hip rafter.

Stone & timber yard shed

Cut and fit the shorter jack rafter between the ridge board and the roof plates, positioning them every 24 in.

Classic front porch

You can use them later for the shorter valley jack rafters (Photo 10).

Frame a gable dormer: looks great on the outside. Expands and brightens the inside

Metal connectors and solid blocking were also used for jack rafters along hips and valleys, and these areas sometimes called for creative nailing techniques at the inside angles.

The New American Home '95: construction

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