Design failure theory

British thermal unit (Btu) A British thermal unit is the energy needed to raise the temperature of 1 lb of water ]°F (0.6°C) at sea level. As an example, one lb of solid waste usually contains 4,500 to 5,000 Btu. Plastic waste contains greater Btu than other materials of waste. See calorie energy consumption heat, brittle Easily broken, damaged, disrupted, cracked, snapped. See design-failure theory, Griffith metal fracture. 

T , See melt temperature, theorem See mathematical theorem, theoretical versus actual properties See plastics, theoretical versus actual values of. theory A unifying principle that explains a body of facts and tbe laws that are based on those facts. See atomic theory design design-failure theory design theory and strength of material empirical engineering approach versus practical approach mathematical theorem mixing theory. 

---