11.2.4. Top Girder Moments

Try these first

1. 1.

   What is the relationship between load and moment on a girder?

   Hint

   Think about the formula M+ = wL²/8.

2. 2.

   Define static equilibrium.

   Hint

   Remember equilibrium is about balance.

3. 3.

   What formula calculates the maximum positive moment in a girder?

   • M = wL²/2
   • M = wL²/4
   • M = wL²/8

   Hint

   Think about the factor that includes length and load.

4. 4.

   True or False: Girders in multi-storey frames are treated as discrete beams.

   • True
   • False

   Hint

   Remember the principle of continuity in design.

5. 5.

   A structural designer needs to ensure that the maximum moment in a beam does not exceed 10 kN*m. Calculate the maximum allowable uniform load if the beam length is 5 meters.

   Hint

   Make sure you correctly convert the formula to find the load.

6. 6.

   For a girder supporting multiple floors with an imposed load leading to a shear force of 15 kN, what is the maximum moment produced assuming the span length is 4 meters?

   Hint

   Remember to identify the distance correctly to relate force to moment.