How come you are not using the 30 degree angle as you specified at the start of the video on your speed square but 22.5 instead? Is this because the speed square is imperial and not metric?
The 30 degree angle is the plumb cut for your common rafter, which you use as a reference to get the angle of your plumb cut on your hip rafter, which ends up being 22.5 degrees.
the first he was on is the angle for your common rafters. because a hip is running 45 degree from the ridge it will be at a different angle. hence why he used the hip rafter angle
You could, but you would be off by .87 of a degree. That example is a coincidence. It is not useful as a rule of thumb. Example 6/12 pitch. 45-6= 39. A 6/12 pitch is actually 26.57°
Sorry, I forgot to tell you my method for your original question. "How do I find degree given a pitch?" The formula is: tan^-1(rise/run) Example: what is degree equivalent for a 9/12 pitch? Tan^-1(9/12)= 36.87° Real world: set your speed square or mitre saw just a hair less then 37°
Because the hips and valley rafters are longer than common rafters. They go diagonally from the plate to the ridge so their length increases. A longer rafter with the same rise means a lower pitch. In this case 22.5 degrees for the hip valley plumb cut.
To add to the great answer from the original replier, the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5° If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance. So, you decrease the angle of rise for those framing members so that it meets the correct elevation. Hope that helps
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5° If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance. So, you decrease the angle of rise for those framing members so that it meets the correct elevation. Hope that helps
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5° If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance. So, you decrease the angle of rise for those framing members so that it meets the correct elevation. Hope that helps
If you mean, for Jack rafters, it’s always 45 degrees, unless your doing a roof that isn’t a classic 90 degrees, looking down at the roof in a Birds Eye view format.
If using a circular saw, just set your fence to 45° and cut along your plumb cut. Otherwise, (especially if cutting timbers) use your framing square tables. The side cut of hips and jacks lines 5 & 6 with some stair gauges will get that for you.
If I understand your question correctly, I think you are talking about the degree of bevel for the cheek cut. On a true hip rafter the cheeks will be cut at a 45° bevel because a hip fits into a 90° inside corner. In the real world it will likely deviate slightly by a degree or two. Hope this helps
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5° If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance. So, you decrease the angle of rise for those framing members so that it meets the correct elevation. Hope that helps
After hours of research, this bloke explains it in seven seconds.
😂
Indeed 😊
In carpentry it’s nice to have good angle tools and also to know a fair bit about angles👍
You are correct. Love the Swanson speed square. Such a great tool.
Use framing square for rafters
Framing squares and speed squares serve the same purpose.
@@Jayrealright_no
Also cutting out that slimy green knot at the same time in one cut.
Perfect 🎉
Top tip 👌
Glad you liked it
How come you are not using the 30 degree angle as you specified at the start of the video on your speed square but 22.5 instead? Is this because the speed square is imperial and not metric?
The 30 degree angle is the plumb cut for your common rafter, which you use as a reference to get the angle of your plumb cut on your hip rafter, which ends up being 22.5 degrees.
Good to know...from now on, every roof I build will be a 40° pitch.
After dozens upon dozens of videos, he explains it using plain English.
Do another video explaining the hip rafter angle to make it known 🤷🏼
He just did ?
Can someone translate?
Why do you transfer 7 to 7?
the first he was on is the angle for your common rafters. because a hip is running 45 degree from the ridge it will be at a different angle. hence why he used the hip rafter angle
A 7/12 pitch equates to 30° 👍🔨🇮🇪
A hip cut 7/12 is 22°
@@lewisbrotherscarpentry Apologies that was for a common, 🙄😆
@@TheToolnut don’t worry mate I gathered have a good day.
@@lewisbrotherscarpentry Good man, great top there, 👍😁🔨🇮🇪
Kinda new to carpentry, but let's say Im doing a 9/12 pitch. Cant I go to a miter saw and subtract 9 from 45 and get 36 degrees?
You could, but you would be off by .87 of a degree. That example is a coincidence. It is not useful as a rule of thumb. Example 6/12 pitch. 45-6= 39. A 6/12 pitch is actually 26.57°
@@RedSealCarpentry I realized this 2 weeks later..... 😂 😂 Thanks my man, appreciate ya. It's nice learning from ppl
Definitely, I always want to keep learning.
Sorry, I forgot to tell you my method for your original question. "How do I find degree given a pitch?"
The formula is: tan^-1(rise/run)
Example: what is degree equivalent for a 9/12 pitch?
Tan^-1(9/12)= 36.87°
Real world: set your speed square or mitre saw just a hair less then 37°
@@RedSealCarpentryyuh I looked it up good thing I have a construction calculator.
if you measure 30⁰ why don't you just cut at 30⁰???
Because the hips and valley rafters are longer than common rafters. They go diagonally from the plate to the ridge so their length increases. A longer rafter with the same rise means a lower pitch. In this case 22.5 degrees for the hip valley plumb cut.
To add to the great answer from the original replier, the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5°
If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance.
So, you decrease the angle of rise for those framing members so that it meets the correct elevation.
Hope that helps
@@RedSealCarpentry thanks for explaining for others. My RUclips doesn’t show comments annoyingly. 😢
First 30 and then 22.5?
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5°
If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance.
So, you decrease the angle of rise for those framing members so that it meets the correct elevation.
Hope that helps
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5°
If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance.
So, you decrease the angle of rise for those framing members so that it meets the correct elevation.
Hope that helps
I’m not sure how to phrase this question, but what about the angle of the compound mitre off of the pitch angle? If that makes sense
If you mean, for Jack rafters, it’s always 45 degrees, unless your doing a roof that isn’t a classic 90 degrees, looking down at the roof in a Birds Eye view format.
If using a circular saw, just set your fence to 45° and cut along your plumb cut. Otherwise, (especially if cutting timbers) use your framing square tables. The side cut of hips and jacks lines 5 & 6 with some stair gauges will get that for you.
Plumb cut is 22, and on usual square hip it's 45. So make this 22 mark, set your circular saw base at 45 and your good to go.
If I understand your question correctly, I think you are talking about the degree of bevel for the cheek cut.
On a true hip rafter the cheeks will be cut at a 45° bevel because a hip fits into a 90° inside corner.
In the real world it will likely deviate slightly by a degree or two.
Hope this helps
Um can’t understand the chap. Translate to English
So the pitch of the roof is 7/12, roughly 30°. However, he is cutting a hip rafter which uses a different scale on the speed square to account for the longer length a hip rafter has to travel. So he switched to the scale for hip/valley rafters, found the 7 and showed that it was roughly 22.5°
If you are still curious, they have two different scales because a hip/valley rafter travels to the same height as a common rafter (ridge) but it does it over a longer horizontal distance.
So, you decrease the angle of rise for those framing members so that it meets the correct elevation.
Hope that helps
He's speaking English?! Where are you from?
Never understood why not just mark it all in degrees instead of transferring numbers ???
There is a better way but I will keep that to myself 😉
Pls share !