3.3. Load Transfer

Try these first

1. 1.

   What is the main function of purlins in a roofing system?

   Hint

   Think about their position in the structural framework.

2. 2.

   Define dead load.

   Hint

   Consider what materials contribute to this weight.

3. 3.

   What is the primary role of purlins?

   • Support dead loads
   • Transfer loads to trusses
   • Connect trusses to supports

   Hint

   Think about where purlins fit in the structure.

4. 4.

   True or False: Live loads remain constant in a building.

   • True
   • False

   Hint

   Consider how different uses of a space can change the loads.

5. 5.

   A roofing system has to support a snow load of 2 kN/m² on top of a dead load of 1.5 kN/m². Evaluate how loads should be optimized through either purlins or trusses.

   Hint

   Consider the structural capacities of both purlins and trusses.

6. 6.

   Consider a scenario where a sudden gust of wind leads to unanticipated uplift forces on a sloping roof. What measures could be put in place to strengthen trusses against this uplift?

   Hint

   Think about how structural stability is enhanced under stress.