Old fashioned gas stove with automatic lighting - how? Not just any weight, but 350 pounds. So a stand supported vertically buy 5 1x4s could handle 45000 lbs of vertical load; WAY more than a fully loaded 156 gallon tank will weigh. (The allowable bending stress for the above 38 x 89 mm lumber is Sb = 10.34 MPa.). Water weighs roughly 8lbs/gallon. It will crack without any support with anyone other than a kid sitting on it. Something to keep in mind. With no back and a removable front panel you will have very little rack strength as other have mentioned. It will hold the weight, but that stand is going to be top heavy and will fall over if you sneeze on it. Continuous and Point Loads - Support loads, stress and deflections ; Board Feet Chart and Calculator - Board feet - volume measurement of lumber; Type of Wood. 280 lbs for the 2 of us plus another 100 or so for the mattress (and some occassional, ahem, wrestling)? An ~8ft long beam sits horizontally. Finally, the bottom of the tank needs to be supported very evenly. What kind of plywood are you using to skin the piece? Why not just build it out of 3/4" plywood? 3 primer spray cans and 3 black spray cans. Has never wobbled or given any hint of issues. Should work fine w/o the notches if that's too difficult. For this question, you must consider the load position. Selecting hydraulic motors and a pump for hydrostatic transmission. In other words, the 2 x 4 is laying horizontal like a joist w/ the 4" side vertical. In other words, it can support a lot of load for a short period, but that same load will cause sagging and eventual failure over time. I agree. For an expansion of the corresponding factors, read through for better understanding of how much is a 2x6 load capacity. per foot or about 2,100 lbs. You can back calculate what your loads can be from there if you know span and spacing. On edge, plywood is VERY strong. May not be necessary if you use 2x6 rails. Is the load uniform or only a point load? Here is my plywood fishtank stand: http://wordsnwood.com/2009/fishtankstand/ For five years it has stood in my house, holding over 300lbs (30 gallon fish tank plus gravel, plus all the stuff we put IN the stand), It is supported by 3/4" plywood on each side, and down the center, and a 1/4" plywood back. They don't extend past the bed, and you can be sure they're designed to hold it properly. JavaScript is disabled. The ends are secured, so how much load can a 6' span of SPF 2x4 support when turned on 3.5"? Do you have a box spring and mattress or just mattress? Yes, at the time I looked up the weight-carrying capacity of plywood on edge. ... wood (go ahead with the dick jokes), is that it is susceptible to failure due to loading over time. I need to get this into an apartment up some stairs, and I just generally would appreciate the lighter, moveable aspect of it. Please submit links to how-to pages and videos, pictures of beautiful and amazing pieces you made for us to admire, or help you finish. total for a 12' span. From the center of the beam hangs a ~200lb object such as a punching bag or a (living) human body. For anyone who cares, here's the album of the build so far! How much weight (roughly) can a 8 foot normal 2x4 hold standing straight up? If you're worried about strength, you can always test it before. Build a shelf to put some pots and pans on, or deck the top of a bridge? Factors that Determine the Weight A 2x6 Can Support. 6. Make sure that you have a good bearing surface at the ends to support the ends. I'm surprised I had to scroll down this far to see this. You should be more concerned about GOOD solid corners and a solid platform to rest the bed on. And consider what a mess 10 gallons of water, gravel, and fish will make when it comes crashing down. Yeah. Prefabricated was a thought but I didn't quite find exactly what I wanted. 7. You can support a lot of weight with 2x4s, but you've got to do it right. How much weight can a 1x4 support? The tank will be sitting on a plywood top, so it won't rest completely on the frame itself. Solid as a rock. Will this be enough to support me, my gf and mattress? It also has a plywood top and lower shelf. I tend to overbuild fish tank stands because taking the chance to under-build (?) I built a bed frame for a California King mattress, and it has worked out great. If you attach plywood sides and a back, you have a better chance. The 2x4 also eats up (obviously very slightly) a little more room on the inside of the stand, which I would like to keep open for sump addition, maintenance, equipment, etc. I think 1x12 cedar boards at lowes are like $30 for 8' and they're pretty nice on the finished side. Vertical, load basically in the middle half, dynamic. Screws are a little sketchy for this application, if you ask me. Builders make use of yellow pine during building constructions for holding up everything in the newly built houses, from the floors to porches, which in turn offer a minimum support of 35LBs per square foot. Instead it is just more of a pain to work on, and the thing rocks back and forth since it is on carpet. I would run a 2x4 on edge centered underneath it. Finally, the bottom of the tank needs to be supported very evenly. And make sure the top plywood is high grade and dead flat. You should consider adding a diaganol brace at the back one leg from upper right/left to lower left/right would probably suffice. I'm pretty sure this will work for a 40 gallon tank. "Storing" energy when it is not being used? Could you build it out of cedar? And I did a pretty substantial rack test by leaning on it from all four sides. The stress level is 106.5 %, which exceeds 100 %. For example, a 10-foot 2×4-inches frame with an even load of 40 pounds would have a maximum bending moment of 1000 feet pounds. Sorry for the late reply, I was out of town for a bit at a wedding. How much weight can a 2x4 hold or support horizontally? It will be plywood skinned, but the rear will be left open and the front will be removable, so there won't be any support structure from the ply on the front or back. MountainManGanjaGrower Active Member. How much weight will it hold assuming all the weights/pressure is coming from above the 2x4, and its standing straight up. I would love to notch the 6x6's and the side rails but I don't have any cutting equipment, all cuts will be done by Home Depot and I don't think they'd be willing to do that (nor would I trust them). Any one have some favorite designs to build from? Use a 6x6 in the center if you can. As for the torque, is it because of the height of the stand (40") or the slim wood? How long are you planning on it holding this weight? Add another 20lb for the weight of the empty aquarium itself, and another 10-20lb for gravel and ornaments, and you have an idea of what you need to support. You probably don't need to worry about the compression strength, but would be worried about the corner joints if there is any chance of that weight being shoved to one side. New comments cannot be posted and votes cannot be cast, More posts from the woodworking community. Will the screw points be enough? Attach the middle blue rail to the red rails via joist hangers. A single 2x2 can easily support 300 lbs of vertical load. Holding up a double mattress in your dorm room? The tank can sit slightly out of "level" without problems but the top it sits on has to be dead on flat! This is one of the best replies to a question I've ever read on this forum. I too am slightly nervous about the screw lengths. If you change your mind about the 76-mm-long screws, and the slat screws, I think you could carefully remove one 76 mm screw at a time, drill a slightly deeper (very small) pilot hole, then carefully install, e.g., a 102-mm-long screw (and a 64-mm-long slat screw). On the other end, a 2x6 can support a V8 engine of between 600 – 700 lbs. The Ls cancel out, leaving us with just 3.5/1.5 = 2.333. Add another 20lb for the weight of the empty aquarium itself, and another 10-20lb for gravel and ornaments, and you have an idea of what you need to support.