Fixing joist on steel beam

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Peter500

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I have a timber joist that will sit on a steel beam and will support a flat roof. It will also meet a pitched roof as shown in the picture below. I was wondering whether a screw would be adequate to prevent uplift or whether something like nails would be required? I would also put some blocking between the joists (not sure whether to do timber or my 7N medium dense blocks.

Screws would be easy as I have a mag drill, but hiring a gun would be costly and difficult as they would need to go in at an angle due to the bottom flange of the beam.

1719519556850.png
 
Can you drop the joist and fit between the flanges?
 
blup said:
Can you drop the joist and fit between the flanges?
Click to expand...
I would lose head height, need to remove and cut blocks, and have additional timber to raise the height, so I don't really want to do that. I may also need to rethink locations of pipes etc. It's a garage, so the additional height would allow more storage. I'm hoping that there would be an easy way to do this.
 
Peter500 said:
I have a timber joist that will sit on a steel beam and will support a flat roof. It will also meet a pitched roof as shown in the picture below. I was wondering whether a screw would be adequate to prevent uplift or whether something like nails would be required? I would also put some blocking between the joists (not sure whether to do timber or my 7N medium dense blocks.

Screws would be easy as I have a mag drill, but hiring a gun would be costly and difficult as they would need to go in at an angle due to the bottom flange of the beam.

View attachment 347440
Click to expand...
If it's just holding down you're after, then just hook a short strap under the flange and fix it to a batten screwed to the side of the joist.
 
noseall said:
If it's just holding down you're after, then just hook a short strap under the flange and fix it to a batten screwed to the side of the joist.
Click to expand...
I'm not sure what you're describing, but it sounds like it could be a good idea. What sort of straps do you mean?

I've also just had the idea of bolting timber (like a wallplate) to the underside of the steep and then using something like truss clips with twist nails. So it'll be like a wall plate but instead of resting on something solid, it'll be held up by the bolts. This would just limit my options slightly where the bolt heads are.
 
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