DIY Doctor

Truss identification for fink trusses with extra beam

Postby Andy J » Mon Jul 20, 2020 10:18 pm

Hi All,

New here and hoping to pick brains.

My 1960s bungalow loft has what looks like Fink trusses, except they have an extra beam joining the top chords, above and parallel to the bottom chord at about thigh height, starting and finishing at the joint of top chord and compression webs. They don’t appear on any truss designs I can find online so they intrigue me. They get in the way and need to be clambered over when moving around the loft, so I’d love to cut out the middle section between the tension webs, but I’m assuming it’s there for a reason and I shouldn’t mess with it. I just can’t identify why it’s there in the first place.

Any ideas what I’m looking at?

Andy J
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Postby stoneyboy » Wed Jul 22, 2020 8:03 pm

Hi andyj
Sorry you have not had a reply - your duplicate post has been removed.
These tie rafters are common even in cut roofs and they are used where there is some doubt regarding cross tying at lower levels or lack of support under the roof structure. It's probably worth getting a structural engineer to have a look before you cut them out.
Regards S
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