Gable Roof Pattern Rafter

How to setout a pattern rafter for a Gable Roof

[@petergilliard1981]

How refreshing. An Aussie accent, clear descriptions and metric measurements. My applause is attached.

[@Buildsum]

Thanks Peter, I'm glad you like it.

[@bentaylor1939]

This is really great. Learning way more from your vids than MBA course. Please keep making content, the industry needs it!!!

[@Buildsum]

Thanks mate, will do!

[@seth6836]

Thank you for your videos. Currently doing an apprenticeship via online learning and the information given is very little and not always clear. Your videos are making everything make sense and allowing me to answer questions that I would be unable to answer otherwise.

[@Buildsum]

Hi Mate, thanks for your comment, great to hear that the videos are helping.

[@matto8601]

I am in the same boat as you seth. Thankyou Buildsum this appreniceship would be terrible without you!

[@jackh2237]

Thanks very much. Your videos are awesome and helping a lot with my apprenticeship. Cheers!

[@Buildsum]

Hi Mate, that is great to hear thanks

[@michaelfayad6764]

These videos are great.. big help 🙏

[@Buildsum]

Thanks Mate, I'mgGlad you like them!

[@Sherlockly]

If you have a rafter run of lets say 3678 how would you shorten that for the square? I understand the shortening for the rise

[@Buildsum]

Hi Mate, If you have a look at the 7.30min mark you will see how this can be done.

[@danielcauchi9677]

Great videos mate. One thing that always gets me with calculating rafters is that we measure from the ridge to the corner of the top plate for our rafter length but the top of the rafter sits higher than the top plate. I figure that the actual ridge height will now be higher by the distance of the bird’s mouth to the top of the rafter plum straight up? For example using a 90mm rafter with a 30mm bird’s mouth means the ridge will actually be 60mm higher than or original rise measurement. Is this correct? Cheers

[@Buildsum]

Hi Daniel, you are correct however your figures are slightly out, a 90mm rafter will have a distance greater than 90 on the plumb. Your concept is spot on. The length of the rafter is from the ridge to a position plumb up from the back of the birdsmouth. If you want to measure to the corner of the plate you have to mark the back of the birsdsmouth. I have demonstrated this in the attached video with relation to the hip. kzbin.info/www/bejne/o6jScqqpqtyAr6s Hope this helps.

[@andrestevenson6045]

Just what I was looking for. Thank you.

[@Buildsum]

Thanks, Andre, Glad you like it.

[@rogerlz349]

Hi John, Is the depth of birds mouth will affect the roof pitch little bit? Thanks

[@Buildsum]

Hi Roger, no, because the rafter will drop at both ends by the depth of the Birdsmouth it wont piviot

[@rogerlz349]

@@BuildsumThanks for your reply. The ridge height is depends on the birds mouth depth, is that correct?

[@Buildsum]

Hi Roger, the ridge will move up or dowm depending on the depth of the birdsmaouth, yes.

[@TheJohnson861]

4.51 why in the Pythagoras are you adding 1.092

[@Buildsum]

Hi Mate, 1.092 is the square of 1.045 which is the rise of the roof.

[@pjfam1653]

Does the thickness of the ridge not matter?

[@Buildsum]

Hi PJ, at the 10.00 min mark of the video i make a deduction of 10mm which in this example is half the thickness of the ridge. As the rafter is only on one side of the roof this is all that is required. Hope this helps.

[@josecorona102]

Muy buenos videos amigo Me podrías recomendar un libro de techos de casas

[@Buildsum]

Hi Mate, This is problay the best one www.booktopia.com.au/the-roof-building-manual-the-easy-step-by-step-guide-with-tables-and-bevels-5th-edition-staines-hiddle-allan-lloyd/book/9781875217328.html

[@josecorona102]

Gracias amigo por esta informacion

[@markdineen]

Hey. I'm just curious. I understand how to use pythagoris/trigonometry to get the length of a rafter but say you don't know the span (2090m) and you want to use the square, is there a way to mark the 310 measurement on the steel square as the 310 measurement for example doesn't sit on the timber to be able to mark? I'm learning a lot from your videos so thank you

[@Buildsum]

Hi Mark Not sure I understand what you mean by not knowing the half span but if the measurement you require is not sitting on the timber then you can use a combination of try square off the blade of the Roofing square to transfer the mark to the timber

[@markdineen]

Buildsum Sorry, i've just looked back on the video. I understand now, I would have to know the measurement 2090 before hand. What you said regarding using the combination square answers my question though so thank you.

[@anthonywibberley9592]

hi.. im sorry if im being thick but on my calculator tan 30 x1.810 is= 1.242 or tan 30= 6.40533.. Advice would be great

[@Buildsum]

Hi Anthony Tan30 or 30Tan on some smartphones should give you 0.577, this multiplied by 1.810 gives you 1.045

[@mirjandjali6928]

sorry master but in wich part of world 30(degree) multiplied for 1.810 (half span)=1.045 . sorry maybe i didnt understand well

[@mirjandjali6928]

Buildsum First of all thanks for your seriousity,second thanks for your videos i like them all very much

[@ASKing-xh7fs]

+mirjan djali take your time and calculate it carefully. Tan 30 = 0.57735026919 x 1.81 (half span) = 1.045

[@colinanderson7319]

my head has just exploded

[@phillylove7290]

Yeah hes definitely some type of evil wizard or something.