Are you allowing for brick and cavity?

@Buildsum

Жыл бұрын

Hi Yes that is covered in this video kzread.info/dash/bejne/k2SHtZqlp9TMZ8o.html Hope this helps

Good contents. Thanks mate.

@Buildsum

4 жыл бұрын

No problem 👍

Are you saying 'half the mitre thickness of the ridge' when you mean hip?

@Buildsum

11 ай бұрын

Hi, yeah looks like should have said Hip althougn the hip and the ridge in this case are the same size so the dimension is the same.

Hi Buildsum Just a quick question Are we able to deduct 519.6mm from the setout length of rafter without using the 510mm method at the beginning? And just keep creeping each creeper 519.6mm to longpoint?

@Buildsum

Жыл бұрын

Hi Mate, if you did that all your rafters would be slightly out of line, maybe not enough for a novice to notice but a Tradesman would not accept it.

@shadzmuhiddine428

Жыл бұрын

Ok thanks mate

Hi, love your videos, do you have any videos where you explain the "plan" lines and dimensions. They really help to understand everything as a whole but there isn't very much info readily available. Thanks

@Buildsum

4 жыл бұрын

Hi Jordan, thanks for your comments, sorry no videos like that.

Hey Mate, just to let you know its only a 10mm reduction not 14.14mm, its probably why you were out on the birds mouth, you were calculating the hypotenuse. Other than that great videos

@Buildsum

2 жыл бұрын

Hi Mate, in this video I was covering the reduction for the long point of the first creeper rafter which will have no effect on the position of the Birdsmouth. Yes the Ridge reduction for a 20mm ridge is 10mm but this is covered in this video kzread.info/dash/bejne/k2SHtZqlp9TMZ8o.html not the one you have commented on. Hope this clarifies things.

Hi Buildsum I tried to work it out the length of the hip rafter by using the same method of gable rafter or common rafter. I don't want to relay on calcs or Hancock red roofing book , at least if I am using it want to know what are those numbers exactly standing for. My question is , is there any standard formula measuring hip rafter? or what is missing from common rafter formula to be added to hip rafter ? thanks for your time !

@Buildsum

8 жыл бұрын

+jivara sulaiman Just remember that the angle of the hip is less than the pitch of the roof because it runs over a longer distance kzread.info/dash/bejne/n6ujo9mspdqzqaw.html kzread.info/dash/bejne/gKmhmtRqqMevj5s.html kzread.info/dash/bejne/gquJmtKQf7DJkdo.html kzread.info/dash/bejne/gGZszsWFqtrMg9Y.html These videos will give you a few different options Hope they help

@jivarasulaiman9814

8 жыл бұрын

Thanks again !!! you are legend !!

Hi Buildsum, Just wanting to confirm I have these calculations correct and also have a couple of questions. The first step is to deduct half the rafter thickness and add on half the ridge thickness (14.14) which gives the first measurement (510) and then the other measurements are 519 from the 510 mark and so on until I get down to the birdsmouth (roughly)? I was reading a couple of roof construction books I have and the calculation they have for creeper reduction is rafter spacing x rise per meter/run (450x1.154 = 519.3). They then use that measurement as a reduction but don’t use the first part your talking about. I’m just curios to know are their a few different ways or preferred methods? Also, would the calculations (14.14 half thickness of ridge squared) be the same for different thicknesses of ridges, say a ridge beam (75/2 = √53.03? Hope that makes sense. Appreciate your time!

@Buildsum

4 жыл бұрын

Hi Mark From your calculations i am assuming that you are talking about calculating the creeper reductions. Your calculations are correct. However i dont do this in this video. In this video I take half the ridge plan thickness and deduct it from the centre line to give me the true length of the common rafter. I then deduct half the rafter plan thickness from the centre line to get the true length of the Crown end rafther. The method that I use to get the positions of the creepers is a different method to the one that you are working with, I take take plan length of the creeper directally from the setout of the roof and then convert it to the true length. There are lots of different ways of working this out, everyone has there own prefered method, mine is as i have shown in the video, short of the spreadsheet that works out all the lengths for you. Yes this works regardless of the thickness of the original ridge. Hope this helps.

@markdineen

4 жыл бұрын

That makes perfect sense, really appreciate your time. I have learned so much from your videos. For some reason I have a love for roofs, especially cut roofs, something that is a common practice back where I’m from (Ireland) so its a skill i want to perfect especially with truss roofing becoming the go to. Good to have the traditional way in the back of the mind. Thanks again

I remember we did different at Tafe. We marked hips on the other end .

@Buildsum

7 жыл бұрын

Hi Roger That must have been with someone else as this is the only way i do it.

@rogerlz349

7 жыл бұрын

could you revise me what is the connection between birdsmouth side and back side of the pattern rafter, please? i remember we draw some cross line on the narrow edge of the pattern as well.

@Buildsum

7 жыл бұрын

Hi Roger As per the video, we use the back of the Pattern Rafter to draw a representation of the top plate and the positions of our creepers. We can the measure the plan length and use this to calculate the length of our creeper. These lengths are then marked on the other side of the Rafter and the edge bevels marked on the edge of the timber.

Was it me or did we miss the all important hip rafter calculation 🤭

@Buildsum

5 жыл бұрын

Hi Mikey, no we don't include the hip calculations on the pattern rafter because the Hip is longer and therefore a different angle to the rafter. If you would like to know about the Hip calculations these videos should help. kzread.info/dash/bejne/gGZszsWFqtrMg9Y.html