With reference to structural engineering
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a plate folded like a prism
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gravity and air resistance.
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Please refer to the following link:
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The following site has the answer
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hmm.. sounds like a homework question.  tsk tsk..
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Distribution of force over area.
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Displacement increases with time, and velocity increases linearly\n\ntrue
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it seems crazy that sky scrapers can be so high and not fall down on their own.  this is because it is full of materials that have been tested before to failure.  the structural engineer knows that every beam, joist or member has a certain design load capacity.\n\nby figuring out what the design of the building is, what materials will be used and what the different loads will act on the structure, the structural engineer will be able to adequately design a system that can carry the load.\n\nfor example.  a 5 story building is to be built.  the soil needs to be tested to see if it can support the foundation.  depending on how many people will load the floors, structural beams will be designed to support such loads and more.  most structural systems have been done and tested before so there is plenty of documented evidence that a certain structural system will work.\n\nnot to mention that many structural engineers now build their work virtually.  they can apply different simulations e.g. seismic loads to see if their calculations work and see it virtually withstand the loads.\n\nhope this helps.
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This link for a PDF File in Rapid Share website, it a book called "Bridges Design Manaual"\n\nI hope it will help you.\n\nhttp://rapidshare.de/files/37074217/bridgedesignmanual.rar
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Just search for 'moment of inertia'.  There are plenty of tables that show a square beam.  If it is offset, you can use the parallel axis theorem.
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http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
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hydrological AND hydrodynamical engineering
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*** search it on website of " The Institution of Engineers ( India ), Calcutta.\nif you don't know the website, plz search it on www.google.com
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Look at the Eifel Tower or a local steel bridge. A model airplane shop could help with the wood and look at an airplane body frame. \nTo calculate, look for a statics book. Engineers need to know how much force each piece has to hold.
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Look this one up on the internet.  I doubt you're gonna find anyone here to do it for you.  That's too much information.  Don't you have a textbook? Use that.
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I think going through some of the professional organizations for the civil engineering profession may help you. Try the American Society of Civil Engineers or the Canadian one (I'm putting the websites below). Some states also have their own Civil Engineering Society groups, so you could try there as well. Hope this helps a bit and good luck! :)
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what's the boundary conditions?\nself weight problem? \nthen, what's the material of the beam?\n\npls be clear :)