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Q: Which method of deigning RCC structures/ elements is also termed as ultimate load method?
  • A. Limit state method
  • B. Load factor method
  • C. Working stress method
  • D. Modular ratio method
Correct Answer: Option B - Ultimate load method (ULM)–The ultimate load method (ULM) was evolved in 1950 as an alternative to the WSM. It is more economical than WSM • The method is based on the ultimate strength of reinforce concrete at ultimate load. • The ultimate load is obtained by enhancing the service load by some factor referred to as load factor for giving a desired margin of safety. Hence the method is also referred to as the load factor method or the ultimate strength method.
B. Ultimate load method (ULM)–The ultimate load method (ULM) was evolved in 1950 as an alternative to the WSM. It is more economical than WSM • The method is based on the ultimate strength of reinforce concrete at ultimate load. • The ultimate load is obtained by enhancing the service load by some factor referred to as load factor for giving a desired margin of safety. Hence the method is also referred to as the load factor method or the ultimate strength method.

Explanations:

Ultimate load method (ULM)–The ultimate load method (ULM) was evolved in 1950 as an alternative to the WSM. It is more economical than WSM • The method is based on the ultimate strength of reinforce concrete at ultimate load. • The ultimate load is obtained by enhancing the service load by some factor referred to as load factor for giving a desired margin of safety. Hence the method is also referred to as the load factor method or the ultimate strength method.