Spot the mistake

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Chris Hall
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Spot the mistake

Sat Jun 20, 2015 2:08 pm

A photo from Uchida Miya Daiku's page:
a0322824_20383001-small.jpg
a0322824_20383001-small.jpg (219.47 KiB) Viewed 6057 times
See the goof up? Well, I'm thinking it is a goof up, otherwise it is an odd way to do things.

A hint: it's not visible in this pic:
a0322824_20385060-small.jpg
a0322824_20385060-small.jpg (222.27 KiB) Viewed 6057 times
Thinking that Derek or Jack might get this one, or maybe the maestro has some trick up his sleeve I'm not seeing...
AntoineLaMothe
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Re: Spot the mistake

Sat Jun 20, 2015 9:15 pm

I've been spending the last 15 minutes on it and now I feel a bit stupid. I have no idea what the goof is!
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Chris Hall
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Re: Spot the mistake

Sat Jun 20, 2015 9:35 pm

I will say this is not an obvious sort of thing to spot, so don't feel bad if you are stumped.
Jack_Ervin.
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Re: Spot the mistake

Sat Jun 20, 2015 9:44 pm

So how's he going to do this on the other end?
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Chris Hall
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Re: Spot the mistake

Sat Jun 20, 2015 10:53 pm

Be more specific...

Do what exactly?
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Yxoc
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Re: Spot the mistake

Sun Jun 21, 2015 12:44 am

Hmmm...

The first thing I notice is some jack rafters missing at the other end (and possible some common rafters? can't quite see the whole section clearly) however the receiving mortices on the hip rafter appear to be cut ready to receive them - and as they don't rest on a supporting structure I don't see that it would be impossible to fit them retrospectively.

It looked at first like the Keta lap joint on the far side had not been cut but looking closer it appears that the crossover is set further back into the structure, and surely it would be impossible to get this far without a member so structurally important to be in place?

It's interesting to look at the whole complex structure when we have just been studying isolated components. It would appear that this is a double roof system? or is that a second story sitting atop the first level of rafters? The deeply notched beam sitting atop the common rafters would receive the rafters for the second, or top roof no...?

Not sure I've found the problem

Derek
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Chris Hall
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Re: Spot the mistake

Sun Jun 21, 2015 10:48 am

It's under construction, so one could expect there to be parts missing -- an aspect which does not, in other words, constitute a mistake of any kind.
Jack_Ervin.
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Re: Spot the mistake

Sun Jun 21, 2015 11:22 am

Chris Hall wrote:Be more specific...

Do what exactly?
I don't understand what is going on with the material on top of the hip rafter!!!
Mathieu
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Re: Spot the mistake

Sun Jun 21, 2015 11:27 am

A couple of days ago when looking at his blog I noticed immediately that there is a pocket for a jack rafter tenon at the keta level in the hip rafter. Either this pocket should not be there, one too many or I have no idea how he will attach the jack to the keta AND into the hip.
I guess this anomaly is not what we are looking for? But I am still pondering about this one too.
...
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Chris Hall
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Re: Spot the mistake

Sun Jun 21, 2015 11:55 am

Jack_Ervin. wrote:
Chris Hall wrote:Be more specific...

Do what exactly?
I don't understand what is going on with the material on top of the hip rafter!!!

That's all quite normal when building up an eave with both field rafters and decorative rafters. Nothing unusual there. In the study group we only studied the decorative eave portion of hip rafter framing, for the sake of simplicity.

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