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Calculating Gable End Stud Lengths And Adjustments
Calculate the
theoretical stud length
of the longest stud as shown on
figure 42. Measure the
distance from the outside face of the wall to the centre of the stud.
Divide the distance by the unit run to find the number of units of run.
Multiply the number of units of run by the unit of rise to get the
theoretical stud length. If the distance to the centre of the stud from
the outside wall face is 1200 mm and the unit run is 250 mm, the number
of run units is 1200 mm divided by 250 mm = 4.8. If the unit rise is
150 mm, the theoretical line length will be 4.8 times 150 mm
=
720 mm. The theoretical gable end stud length at its centre is the
distance
between rafter line length and top plate.
The theoretical gable end stud length must be adjusted for the rafter and top plate. The vertical depth of the birdsmouth and sloping top plate must be subtracted and cut from the stud length as shown in figure 42.
