needles

[david31uk]

Hi guys,

This is my first post so bear with me haha............

ok so I've got a goalpost steel frame to install in the back wall of my house to open into the extension I'm building, I considered having the steel beam 'flush' with the existing ceiling but after considering having to needle through our en-suite bathroom which has floor to ceiling tiles etc etc we decided we could live with a small nib.

my question is I plan to use the smallest possible needles in order to keep the steel beam as close to the floorboards as poss- meaning a smaller nib.

Does anyone know if a 100 x 55 universal beam would be strong enough to use as a needle I plant to support both skins on each needle. (the wall is thermal block (both skins) with 20mm render???????

Thanks for any help

David

 

[jeds]

Should be plenty as long as they're not too long and not spaced too far apart. I'd say max 1m.

 

[tony1851]

Does anyone know if a 100 x 55 universal beam would be strong enough

Do they do steel beams that size?

 

[jeds]

Yes. 100x55x8kg

Just to add; not Corus though. But lots of steel stock suppliers list them.

 

[tony1851]

Yes. 100x55x8kg

Just to add; not Corus though. But lots of steel stock suppliers list them.

Thanks.
Never seen them in the standard tables. Would you happen to know who - if anyone - provides tables of properties?

 

[dave31uk]

Hi guys thanks for getting back to me, I managed to speak to my se and he gave me the go ahead for that size needle at 600mm centres!

Went and picked some up cost me £80 for them to cut me 8 @ 1m long so happy days!

Re the properties, it's all Dutch to me but useful bit of kit to have if you want smaller nibs without punching through room above. In my case I'll have about 112mm of nib and I could always drop the ceiling to get it flush if need be!

Cheers

 

[jeds]

Good question. They're not listed on my software. A quick google throws up this document. There's a properties table towards the bottom. To be honest I can't see much use for them. If I ever need anything this small I would use 50x100 SHS.

http://www.iitk.ac.in/nicee/RP/2005_Indian_Hot-Rolled_SERC.pdf