How much could this stand hold?

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Hi everyone, I'm building a stand for a pizza oven that weighs 560 pounds and I just wanted to make sure the design and material could safely hold the weight.  Here is the design...by the way its 1 inch square stainless tubing. I cant really change the design but if I have to I can use 1.5 inch square tubing. Thanks for the input!You miss 100% of the shots you never take - the great one
Reply:you must consider the thickness of the material not just the size of the form  to determine its strength.so for ex 1" square with 1/4" thick wall is lots stronger than 1 1/2" square with 1/16" wall...
Reply:Vertical load, it should hold it all right.  Any pushing or pulling from the side with that load on it might fold it up.Two turn tables and a microphone.
Reply:The thickness is definitely thicker than 1/16" but im not totally sure since I havent ordered it yet and have the option.You miss 100% of the shots you never take - the great one
Reply:1"x1"x1/8" sq. tube will definitely hold the load, but I always use 1 1/2" tube for stands like this. Damage to the legs from carts or items being pushed into it will be more of a concern. Are you going to be installing casters or pinning it to the floor? If you create a lower shelf for storage, any additional weight placed on it will aid in lowering its center of gravity.
Reply:I think I will end up using 1 1/2" tubing just for piece of mind.  The height of the shelf is requested by the client to be able to mop underneath easily.  The shelf wont be holding any considerable weight, mostly just pizza trays.You miss 100% of the shots you never take - the great one
Reply:Originally Posted by brunodog17I think I will end up using 1 1/2" tubing just for piece of mind.  The height of the shelf is requested by the client to be able to mop underneath easily.  The shelf wont be holding any considerable weight, mostly just pizza trays.
Reply:Maybe add kickers from the bottom of the legs back to the shelf cross members to keep the legs from being able to push in should this thing get pushed or hit by anything. 560lbs between the 4 legs is only 140lbs per leg so you should be good there.
Reply:Is it possible to anchor it to the floor?  That would make the legs much more stable.
Reply:Add a couple gussets for diagonal support.Syncro 250 DX Dynasty 200 DXMM 251 w/30A SG XMT 304 w/714 Feeder & Optima PulserHH187Dialarc 250 AC/DCHypertherm PM 1250Smith, Harris, Victor O/ASmith and Thermco Gas MixersAccess to a full fab shop with CNC Plasma, Water Jet, etc.
Reply:You don't show the 560# oven itself. How high is the top of the oven gonna be off the ground? I'm no engineer but it seems to me your COG is gonna be pretty darn high, which will make it tippy and prone for the frame to fold up if it gets jostled around or if those spindly legs get crashed into with wheeled mop buckets, fat and drunken pizza chefs, etc.I don't think I would want to stand next to a 560# object that was almost 37" off the floor – at its LOWEST point – when the base of the stand holding it up was only 32" on one side...the whole thing will end up being quite a bit taller than it is wide, and top-heavy as Sam Hill.You won't have to bash the ends of those legs inward very far for you to get a pretty substantial "tipping moment" that wants to flop that thing on its side on top of you.On the other hand, these concerns would be moot if the legs were bolted to the floor such that the supports were plumb and the load was level...Last edited by Kelvin; 04-13-2011 at 02:53 PM.
Reply:So from reading all this I guess my biggest concern is the integrity of the stand against bumping.  Ill add some 1" angle supports going from about three-four inches off the floor to the front, back and side cross members.  I asked about it being anchored and they didnt want it.  Would this solve all the issues? Sorry for the fast cruddy paint job.You miss 100% of the shots you never take - the great one
Reply:Now you've got the stand you need.Two turn tables and a microphone.
Reply:You are going to want gussets on the top frame and bottom shelf, just putting the gussets on the shelf will not be sufficiant for the lateral loads that the frame will be subjected to.Id also recomend adjustable feet that will allow the frame to be leveled so it can not rock. As mentioned before, 32 inches is a little narrow, id be worried about some kid leaning up against it and pushing it over depending on how tall the oven is. IS there any reason you are not putting a solid table top on it?
Reply:I think even though they said they didn't want to anchor it to the floor I'm going to add plates to the feet and leave it up to them.  I found something interesting... here is the manufacturer's stand for this oven (piz3), it looks even more narrow than mine!!! And doesn't even have any corner stop to prevent someone from knocking a corner off.  wow. So this is where i stand as of now.  1.5" square tubing 1/8th wall with 1" angle or square tubing (depending on what is available) gussets like in the image above and plates for anchoring if they so desire. You miss 100% of the shots you never take - the great one
Reply:I think your last post image answers most of the questions.   the OEM design eliminate the bending of the lower legs.  If you stick with your initial design I would put plates on the bottom of all 4 legs and run your bracing from the floor up to the lower cross members else your legs are still going to bend at the bracing attachment point on the lower legs.  Guess who will get sued when the pizza oven falls over on an employeeTiger Sales:  AHP Distributor    www.tigersalesco.comAHP200x; AHP 160ST; MM350P,  Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma.  For Sale:  Cobra Mig 250 w/ Push-pull gun.  Lincoln Wirematic 250
Reply:I would have to agree, there is a chance that the legs could buckle below those braces.  You could use an X brace instead, just on the bottom of both sides that are 35". If the consumer is worried about sweeping under it, than only put and X brace on the bottom in the back on the 32" side.  This would leave the front open to still sweep under.  All in all there could be a hundred ways to build this rack, but as long as you reinforce it, you'll be sure it won't come down.
Reply:I'd forget the gussets & add an X brace under the shelf, it will add stability.Last edited by Old Skool; 04-20-2011 at 02:45 PM.Reason: clarification