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If the problem were to just make a box that itself did not burn in an housefire, that seems trivial and somewhat useless - 100 cm cube of brick that holds 0 (pick your volumetric units) contents If the goal is to protect the contents from a fire you have to understand that many items one wants to protect would deterioriate with heat. Even the best insulation ...


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First, you need a better specification than "fireproof." Is the objective to build a box that survives a flame for a certain time? Is it to protect the contents? Does the box need to keep people out or things in? Be specific. Fireproof items will be typically built with some type of clay-ish fire brick. Depending on how long and how hot the ...


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The main problems is the size. At that size, you might as well build it using brick if you want it fireproof and at a low cost. Having 1.5 mm metal thickness is too small for welding and to structurally support any load. Even at 1.5[mm] thickness the weight will be at least 70 kg, so practically it will be immovable. If you double the thickness (which I ...


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