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Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 12:09

I want to build a 'stage/platform'

It had to be 6000x4000mm, constructed of aluminium, have legs to support it at a height of 1m (approx) and one side (a 6m long side) will be attatched to a wall. The frame would be covered in 18mm ply.

What size box ally should be used? What intervals should the 'joists' be in? And at what positions should the legs be attached.

Was looking at 50mm box but seems a bit overkill.

Any help greatly appreciated.

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 14:14

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

3rd Jul 12 at 15:15

We have used these things called Easi-joists in the past.

Am sure they have a calculator thing to work out how far they span and how deep they are.

Tbh you could design it with them and just make your own joists

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

3rd Jul 12 at 15:15

http://www.wolf-system.co.uk/easijoist_overview.asp

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 15:21

Seems to only be big stuff on there 3cm.

As i can have a supporting leg however often i like the house building stuff isnt much help.

Obv i could use 20mm box but would need a hell of a lot of supports. Just looking for a happy medium.

micra_pete

Premium Member

Registered: 23rd Apr 03
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 15:24

quote:
Originally posted by Gary
Seems to only be big stuff on there 3cm.

As i can have a supporting leg however often i like the house building stuff isnt much help.

Obv i could use 20mm box but would need a hell of a lot of supports. Just looking for a happy medium.

[Edited on 03-07-2012 by micra_pete]

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 15:28

Well thats gone right over my head.

Dan

Premium Member

Registered: 22nd Apr 02
Location: Gorleston on Sea, Norfolk
User status: Offline

3rd Jul 12 at 16:11

I'd imagine it depends Alot on the load it will be under?

Adult GiftsClick here to vist us

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 16:13

A stage full of people. Prob a ton spread out max

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

3rd Jul 12 at 16:16

Can you not use this type of stuff?

http://www.ebay.co.uk/itm/270976684137

That one is expensive and the wrong shape, but that is module and fairly strong.

You'll probably spend as much money buying and fabricating lengths of alu box

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 16:28

Think it would end up been too heavy. Its quite bulky stuff

Got a good price on 50mm box so I think ill go with that. 600ctrs on joists with supports at 1000ctrs.

Unless someone comes up with a reason against?

Ian

Site Administrator

Registered: 28th Aug 99
Location: Liverpool
User status: Online

3rd Jul 12 at 16:31

TIG welding, mostly.

Plus do you need to design in some way of collapsing it or is semi-permanent?

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

3rd Jul 12 at 16:35

Legs/supports will be detatchable.

Can convert my mig to a spool on gun for around £100. Mates a welder who can help. Its also something id like to learn how to do.

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

4th Jul 12 at 08:11

http://www.ebay.co.uk/itm/Stage-Decks-Staging-Blocks-Portable-Stage-Mobile-Stage-/221061530456?pt=UK_Sound_Vision_Other&hash=item33784b4358#ht_1481wt_1396

Taking something like that into account i think 50box is definatly overkill. Providing there is a support every 600-800mm x+y

Any thoughts?

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

4th Jul 12 at 08:35

we made a bandstand for the local village fete, was made of wood and came apart in panels so they could reuse it.

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

4th Jul 12 at 08:37

Cool beans.

Any Thoughts on the strength of the ally idea
?

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

4th Jul 12 at 08:38

Nope, i like wood

3CorsaMeal

Member

Registered: 11th Apr 02
User status: Offline

4th Jul 12 at 08:39

I can spec a nice bit of green oak that will span 4m metres though

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

4th Jul 12 at 08:46

Spec it up in 40mm square timber and ill find an ally with the same strength

Sam

Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
User status: Offline

4th Jul 12 at 09:03

quote:
Originally posted by Gary
Well thats gone right over my head.

Derek Acorah = (pretend) "medium"...

Gary

Premium Member

Registered: 22nd Nov 06
Location: West Yorkshire
User status: Offline

4th Jul 12 at 09:07

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