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Patio roof


JohnBishop

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43 minutes ago, JohnBishop said:

I use both, the stainless steel will go central over the expansion gap, the other one will go to the other side. The remaining 2 will be the ones that submerge to the concrete.

 

So you got two of each?

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4 hours ago, Onoff said:

 

So you got two of each?

Have a look. I also made the crossbeams horizontal. It just does not make sense to make it at an angle, difficult to do and impractical.

 

 

Screenshot_2024-05-11_01-18-11.jpg

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Cut through housings in your roof joists at the appropriate angle to fit over the front and rear goalposts. Just Google "pergola designs" and then Images for ideas.

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Posted (edited)
3 hours ago, Onoff said:

Cut through housings in your roof joists at the appropriate angle to fit over the front and rear goalposts. Just Google "pergola designs" and then Images for ideas.

Do you mean not to bother with mortis and tendon just use 2x12 for girders and 2x10 for rafters? This would actually level everything.

 

Screenshot_2024-05-11_09-57-35.jpg

Edited by JohnBishop
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Posted (edited)

I can see in most cases they use girders even on both sides but it looks ugly if you ask me.
Screenshot_2024-05-11_10-09-24.jpg

 

In one case I can see the girder is inside posts with a sufficient cut I reckon to conceal it

Screenshot_2024-05-11_10-07-10.jpg

 

In this case the crossbeams go on top of the posts so I reckon this is still mortis and tendom but inserted from the top not from the side what makes more sense.

Screenshot_2024-05-11_10-07-50.jpg

 

It looks like I have over-engineered mine. I have to decide if I want to go the crossbeam on top or girders way. The girders way seems the simplest.

Edited by JohnBishop
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  • 2 weeks later...

I have drilled some holes and it looks like the concrete is only 4 inches = 10cm deep and from PDFs you attached (thank you) the anchor length is 13cm minimum for M10

M10 studs 130/170/190mm
M12 studs 160/190/220/260mm

I think in this case I have to cut the concrete out and see if I can make twice as deep footings like 40cm deep or something.

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Ok, a small update. I got 4 of these new bases. Since I will have to remove the existing concrete and pouring new concrete bases I am going to do all 4 of the in the same way.
 

base5d.thumb.jpeg.ef8919b543663c0d8203fa508bdafc14.jpegbase5a.thumb.jpeg.5b984c942672228c65e832b5a6ca1c1d.jpeg


What do think about these?
These are 5mm galvanised on the big piece however the 40x40mm foot it looks like is only 3mm thick steel. Is this enough?

 

Screenshot_2024-06-05_19-43-02.thumb.jpg.f497a37a9a8a5132545f7093d59ec286.jpgbase5c.thumb.jpeg.f2fdd9dd5a3848be298bd3488a68958b.jpeg



The old ones after good few weeks exposure to elements. It looks like the most expensive, stainless steel one developed some rust!
 

base2.thumb.jpeg.344463e63aea99108b33e64dd5fdf5d4.jpegbases.thumb.jpeg.87b640794ad8164d44821d10120383cf.jpeg



Now in terms of concrete bases themselves. How wide and deep these concrete bases should be? 30x30cm and 1.5 feet deep?
They will go 24cm away from the wall. Unfortunately it looks like they all end up on the existing expansion gaps.

 

spot.thumb.jpeg.360966e089abe33f3a8c3295a5ba5c5f.jpegbase.thumb.jpeg.997025ac1ffb86b5676bb5445678f13d.jpeg
 

Please advise

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