Width rafter width rafter boards usually 10 15 cm.
Gable roof shed rafter spacing.
For standard shed roof rafter spacing see rafter span chart.
For instance 2 grade 2x4s at 16 on center will span just over 9.
For light load roofs 24 o c.
Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length.
Roof overhang the distance from the edge of the wall to the edge of the roof.
The program will draw a plan of rafters a gable roof and displays the results of the calculation of the gable roof for the entered data in the form of a drawing of a gable roof at different angles.
Thickness rafter thickness rafter boards usually 5 cm gash depth is the distance from the edge of the board to the extreme end of drinking can t do more than 1 3 of the width of the rafter board.
After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors.
Spacing your 2 4 shed rafters at 24 on center limits the width of your roof.
There is no standard spacing it depends on what size of rafters you want to use and the span of your shed.
If you get premium kiln dried lumber then you could span 10 5 with the same size of lumber and rafter spacing.
Moving to 16 on center you could span your spf 2x4s up to 6 for heavy loads and 9 for light loads which would still work with a 12 12 gable shed.
Gable roof rafters spacing layout.
2 4 rafters can span up to 7.