How To Make A Curved Roof Rafter

You saw the curved rafters in a back issue of fhb.

How to make a curved roof rafter.

To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch. In clamart project kerto lvl replaced glulam which is generally used for building long curved beams. Fourteen curved rafters are attached to a 6 6 beam and a 2 by 9 1 2 ridge beam. Curved kerto lvl forms the oval opening for the track and field area.

Fink trusses were originally invented for the purpose of beefing up bridges but many contractors now use them to increase the strength of interior structures. If not the 60 grit will remove wood more quickly than the 150 will to bring out the desired curves. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter. Start with the 60 grit and go over the whole length of the ceiling rafter that you ve just cut.

In a fink truss the internal joists are arranged in a w shape ensuring even weight distribution from one end to the other. Use the 60 grit to make sure the curve dimensions are exactly what you want. Mark and cut the first rafter ends the first step in building the roof rafters is to cut one rafter board to length with the ends angled properly and then to mark and cut the birds mouth and seat on the rafter. Along the sides of the pergola are 8 curved corner braces.

The final layer could be 2x 1 4 or kerfed 1. The use of kerto lvl enabled greater architectural liberty allowing wide spans and optimising the wooden structure itself. Curved rafter 9 enough clearance for roof sheets to drain into the house gutter fix bracket as close as possible to the base of the gutter rafter strengthening bracket outback roof sheet 150 attachment beam 8 10 beam capping clearspan only beam channel clearspan only 150 attachment beam spacer nut rafter strengthening bracket. There are 6 slightly larger curved braces that stiffen the structure side to side and add support to the rafters.

The ridge end of the rafter and often the eve end will need to be cut to the angle of the roof slope. If my memory is correct it was the cover shot and entailed scabbing a new tail to the standard straight rafter at the min.