Difference in Wall plate height.

[Ureyg]

I cannot get my head around how I’m going to do this!
Ideally I want the wall plate sat back so it isn’t exposed too low.
Structural engineer said I can do it either way, sit on top of shorter beam coming out of extension or sat on the post, I can’t see how it would work on picture one? Can anyone help, what’s the best way to go about it?
If I did it like picture two the beam would sit quite low and be exposed.
I’ve just rested the beams roughly where they would be, obviously they’d be notched into the brickwork

 

[JohnD]

You mean the front one?

I suppose it is mostly ornamental, rather than structural?

Would it not look better, set back to the side wall of the house, rather than the front?

 

[noseall]

I cannot get my head around how I’m going to do this!
Ideally I want the wall plate sat back so it isn’t exposed too low.
Structural engineer said I can do it either way, sit on top of shorter beam coming out of extension or sat on the post, I can’t see how it would work on picture one? Can anyone help, what’s the best way to go about it?
If I did it like picture two the beam would sit quite low and be exposed.
I’ve just rested the beams roughly where they would be, obviously they’d be notched into the brickwork
View attachment 335090View attachment 335091

Is that going to be a hip end?

Obviously the further back the WP goes, the higher it will need to sit. The problem you'll have if it's a hip end, is that it will clash with the hip rafter.

 

[noseall]

I cannot get my head around how I’m going to do this!
Ideally I want the wall plate sat back so it isn’t exposed too low.
Structural engineer said I can do it either way, sit on top of shorter beam coming out of extension or sat on the post, I can’t see how it would work on picture one? Can anyone help, what’s the best way to go about it?
If I did it like picture two the beam would sit quite low and be exposed.
I’ve just rested the beams roughly where they would be, obviously they’d be notched into the brickwork
View attachment 335090View attachment 335091

...and if it is a hip end, do the two roof elevations pitch to the same hight (top end) and are they the same pitch?

 

[Ureyg]

You mean the front one?

I suppose it is mostly ornamental, rather than structural?

Would it not look better, set back to the side wall of the house, rather than the front?

Yes the front one, this is how I want it. Would it be possible to do it having it set back? Structural engineer said to do it this way but it will clash with the hip rafter.

 

[noseall]

Yes the front one, this is how I want it. Would it be possible to do it having it set back? Structural engineer said to do it this way but it will clash with the hip rafter.
View attachment 335113

The first thing you need to do is mock up a front rafter (full) and put in place and prop it at the low end to the correct pitch - i.e the only full one that runs right to the peak of those running down the garage.
Mock up the hip blade.

You can then have a look and see just where you can position your wall plate bearer. Take into account any birdsmouths into both the rafter and the hip blade, when working out just how high you can position the bearer.

 

[Ureyg]

The first thing you need to do is mock up a front rafter (full) and put in place and prop it at the low end to the correct pitch - i.e the only full one that runs right to the peak of those running down the garage.
Mock up the hip blade.

You can then have a look and see just where you can position your wall plate bearer. Take into account any birdsmouths into both the rafter and the hip blade, when working out just how high you can position the bearer.

Thank you, I’ll do that! Would there be any reason to not try and match the porch pitch to minimise work on the porch roof and have two different pitches? Thanks