40.6. Load Combinations (IS 456 & IS 1893)

Try these first

1. 1.

   What does DL stand for in load combinations?

   Hint

   Think about the weight of the structure.

2. 2.

   True or False: Live Load is a fixed weight.

   Hint

   Consider what might be placed in a building.

3. 3.

   What does the acronym DL represent?

   • Dead Load
   • Design Load
   • Dynamic Load

   Hint

   It’s related to the weight of materials used.

4. 4.

   True or False: The load combination 1.5(DL + LL) increases the risks in design.

   • True
   • False

   Hint

   Think about safety factors.

5. 5.

   A multi-story building is designed with an average DL of 1500 kN and live load LL of 600 kN. Calculate and analyze the design based on the load combination 1.2(DL + LL ± EL) assuming EL is 300 kN.

   Hint

   Always add and subtract EL before multiplying.

6. 6.

   Propose a strategy for designing a hospital using the load combination 1.5(DL + LL + EL), discussing the factors that govern the importance of this design.

   Hint

   What additional factors are considered in hospitals?