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Clamping Scaffold Legs in Steel Deck


tom.walford

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So here is the thing...

 

I have to build some seating tiers out of 8' x 3' Steel Deck.

 

The problem is that I have to be able to clamp the legs together to stop the blocks moving back and forth (side to side is no problem as the rostra can be bolted together)

 

Standard scaff clamps are no good as the thickness of the clamp is bigger than the gap between the two scaffold tube.

 

Cable ties are my weapon of choice, but I have been told my the theatre owners that they want a scaffold product rather than plastic holding if all together. Who am I to argue?

 

 

 

 

Thanks

 

 

 

 

Tom.

 

 

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Band and plate coupler will join two poles in parallel with no gap. They're designed to be used at right angles but will join in parallel too.

 

For this application though we use 8x4 decks and just put short legs on the front and rest them on the row in front.. Then only 8x3 at the back row. Deck is easier to find as it's more standard. We bolt them together and don't worry about it walking (it doesn't)

 

Wait a minute - I think I've got this wrong - I though you meant it spread it too much but you might be it fouls the leg of the next deck on the same row?

Band and plate couple might still fit especially if you take away the inside little bolt that clamps onto the first leg.

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allow me to be the party-pooper and ask why you're attempting to bodge a grandstand solution, using non-standard parts and not following the manufacturer's recommendations?

 

There are plenty of off-the-shelf grandstand systems available to do what you're trying to do. Steeldeck also do brackets, seats and widgets to properly convert their kit in to seating terraces if you're adamant about using that product.

 

There are a whole host of regulations you have to comply with when creating grandstands that you're probably not aware of and note #1 in your RA for this project will have to be explaining why "asking strangers on the internet how to do a bodged fix instead of proper seating system or properly designed steeldeck adaption system" was the decision made.

 

//gets off grumpy soapbox//

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The bit you need to take from Tom's post (apart from the "do it properly" sentiment) is that Steeldeck have a clamp they have developed for doing just that quickly and easily. Give them a shout.
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We used to run bracing front to back clamped on to the back of each row, and then at some point I think after 5 rows deep start a second row of bracing. Our build's were designed and built by steeldeck, but maybe the leg product is new? Either way give them a call im sure they can help out.
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I don't know about historically but their current method is to stack so that everything can be built with standard units and it eliminates the movement problem the OP is trying to overcome. They also fit front-to-back tie beams and have special seats which fix directly to the deck (because you can't have "loose" seating on grandstands) which also provide additional side-to-side locking of the decks. Finally they have handrails and side rails to fit to the deck which are completely different rails to the ones used for regular staging jobs because the regulations are completely different.

 

Obviously I'm a big fan of properly designed grandstand systems but the official steel deck solution is a good half-way house if you're adamant about using deck.

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We use Steeldeck for temporay risers but it's because we already have a ready supply of deck and over 300 locking seats. The seats lock together and we screw them down ever 3-4 seats.

The problem is our available seats don't fold up like a properly designed system so we have to make the rows deeper to account and it's not space efficient.

 

(We also hire a proper system sometimes, usually when space / compacting maximum number of seats in is important.)

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