Steel Ridge beam to rafter connection details

[OldSpot]

I wonder whether anyone could offer any thoughts on this connection detail please?

 

The extension we have has a steel ridge beam to allow a vaulted ceiling.

The rafters have been skewed to a 2" timber with what look like your standard nail gun framing nails. The timber has been bolted to the steel i-beam.

Make-up is as shown in the picture below.

The rafters haven't been birds-mouthed onto the timber but are just as shown.

(The horizontal timber shown is a ceiling joist so doesn't extend from wall plate to wall plate and is about a 1.4m down from the ridge. Floor to ceiling is 2.5m)

 

Any thoughts as I'm slightly concerned about the roof loading and restraint onto the steel.

 

 

Edited August 22, 2024 by OldSpot

[TommoUK]

..check it off with an engineer..you cant guess it

[OldSpot]

  On 22/08/2024 at 15:20, TommoUK said:

..check it off with an engineer..you cant guess it

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Thanks Tommo, I wouldn't guess it but unfortunately it's already built (before we bought the property)!

[markc]

+1 to @TommoUK comment. A similar detail is sometimes used but with a factory made truss, block infil and hedgehog (spikes plate) connection holding it all together at the apex.

if the rafters are loose, no birds mouth and only nailed, there is only the wall plate holding the rafter from slipping down the roofline

[DevilDamo]

[Mike]

  On 22/08/2024 at 15:47, markc said:

block infil and hedgehog (spikes plate) connection holding it all together at the apex

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+1.

[OldSpot]

  On 22/08/2024 at 15:47, markc said:

+1 to @TommoUK comment. A similar detail is sometimes used but with a factory made truss, block infil and hedgehog (spikes plate) connection holding it all together at the apex.

if the rafters are loose, no birds mouth and only nailed, there is only the wall plate holding the rafter from slipping down the roofline

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 Thanks all.

Alas I fear that's exactly what might be happening 😡.