Jack rafter | Article about jack rafter by The Free Dictionary
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jack rafter[′jak ‚raf·tər]
A short, secondary, or simulated rafter.
Any rafter shorter than the full length of the sloping roof, such as one beginning or ending at a hip or valley. See also: Rafter
Any rafter that is shorter than the usual length of the rafters used in the same building; esp. occurs in hip roofs.
References in periodicals archive
Next, screw the curved corner bracket to each bracket support (two screws on each side) and to the upper jack rafter
To mark the common and jack rafters
, clamp a 2x4 precisely above the spot where it will be installed (Photo 17).
Then measure, cut and nail the valley jack rafters
every 24 in.
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.