Replies

1. 
   Piffin | Jun 16, 2009 11:13pm | #1

   I'll take the pair of 2x8 if they are clear solid lumber, not 'cabin grade'

    

    

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1. 
   vincent843 | Jun 17, 2009 06:58am | #2

   Thanks for respond.  It just standard lumber that carry in HD...Clear, you meant no knots? 

   Is there a link or article that talking about load support?  Thanks.

1. 
   Piffin | Jun 17, 2009 01:57pm | #3

   depth of a beam contributes far more to load bearing capacity than width and that strength increases geometrically. so a 2x10 would be way more than twice as strong as a 2x6Are you asking for a resource that teaches all about engineering for loads? 

    

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1. 
   cameraman | Jun 17, 2009 03:59pm | #4

   Liked your term, "cabin grade" !!!!!

1. 
   Piffin | Jun 17, 2009 06:35pm | #16

   Help!I'm running out of words. Make some up for me quick 

    

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2. 
   seattlejoe70 | Jun 17, 2009 04:24pm | #5

   Well first of all 200 gallons of water only weighs 1,668lbs  not even 1ton.

   my advice on the structure of your stand would be . not to put beams in it at all, but but build a box with say 3/4" plywood with a 2x iner frame. all six sides.  and i think most importaint thing would be to make sure that the floor it will be sitting on. is strong enough to hold it. id avoid building a stand with legs ,as they would consintraite the wieght to four small points. make the footprint as large as possable. and perpindicular to the dirrection of the joists in the floor.  just my two cents.

    

1. 
   Piffin | Jun 17, 2009 05:02pm | #6

   I noticed weight too, and thought he was figuring the weight of the steel tank and dead load of the structure, but it is looking like he is not that far advanced in understandiong loads.but four 4x6 legs is not small for this load, unless they have no footing under them to spread it.so maybe the thing we want to be doing is asking OP - do you need some help designing this whole thing? Please describe the overall situation....and start from scratch. 

    

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1. 
   vincent843 | Jun 17, 2009 05:21pm | #8

   The pic shows only a single 2x6 leg, but it will be glued and screwed with anothe 2x4 in the inner to support the second 2x6 header for the double front header. 

1. 
   seattlejoe70 | Jun 17, 2009 05:48pm | #11

   or  maybe something like this

   
1. 
   vincent843 | Jun 18, 2009 07:10am | #18

   seattlejoe70 , you got mine thought, but I don't want the middle support, that why I look for a better header (red beam).  Yes Puffin, It is for the fish tank, and the foundation is concrete slab.  The pic I provide is not complete, there is some blue braces on the top and bottom. and the front red beam will be double, the back red beam will have some vertical supports. There is also a 3/4" plywood on top. The over all dimension would be 61Lx31Wx36H.  There also a skin or face solid wood with doors, but wont be attached to the frame.

    

    

2. 
   seattlejoe70 | Jun 17, 2009 05:50pm | #12

   http://www.aquariumlife.net/projects/diy-aquarium-stand/56.asp

3. 
   Piffin | Jun 17, 2009 06:26pm | #13

   I'm not sure of dimensions on that, or which piece you are calling a header. 

    

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2. 
   vincent843 | Jun 17, 2009 05:11pm | #7

   Sorry, I mixed up with dec.  I meant 2000lbs. Here is an sample of the frame of the stand I plan to build.  The top header is 2x6, evrything is 2x4 with the exception that the front header will be double 2x6 and the front legs will be 2x6 so given the wide opening of 48".  BTW, there will be some brace support the back header so it won't need  double 2x6.

1. 
   seattlejoe70 | Jun 17, 2009 05:32pm | #9

   that frame will work just fine. but id still sheet it with plywood so that the frame doesnt rack under the weight. and with the plywood you wouldnt even need the 2x6 just make it all 2x4

1. 
   Piffin | Jun 17, 2009 06:28pm | #14

   You are scaring me. I wouldn't let my dog sleep under that with a full tank of water they way you are talking about building it.Hey vincent, will this be on a concrete slab or what sort of foundation? 

    

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1. 
   seattlejoe70 | Jun 18, 2009 04:02am | #17

   Your nuts, Ive been building Concrete forms with that same method for 25 years and theres allot more load put on them than what hes looking to put on his stand.

2. 
   Piffin | Jun 18, 2009 01:11pm | #19

   I may be nuts, but I know the difference between the lateral loads concrete forms experience and the vertical loads this guy is dealing with 

    

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2. 
   seattlejoe70 | Jun 17, 2009 05:37pm | #10

   and  add two more blue 2x4s in the top, and do away with the green ones.

3. 
   Piffin | Jun 17, 2009 06:34pm | #15

   It might be helpfull to know the footprint of this thing and whether you are building for a water storage tank or a fish aquarium and what is under it for a floor. Is it to be interior or exterior.

    

    

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