5.4. Element Design Consideration

Try these first

1. 1.

   What are introduced loads on flat roofs?

   Hint

   Think about what activities might take place on flat roofs.

2. 2.

   What is the weight range of sloping roofs?

   Hint

   Consider the lighter loads involved.

3. 3.

   What is the range of imposed loads for flat roofs?

   • 1.0 - 2.5 kN/m²
   • 1.5 - 3.0 kN/m²
   • 2.5 - 4.0 kN/m²

   Hint

   Check the minimum occupancy load standards.

4. 4.

   True or False: Bolted connections are preferred for their strength and rigidity.

   • True
   • False

   Hint

   Think about what makes a connection easier to work with.

5. 5.

   Given a flat roof with a live load of 2.5 kN/m² and a dead load of 1.2 kN/m², calculate the total load and assess if it meets safety standards if the safety factor is defined as 1.5.

   Hint

   Ensure to understand your safety load factors when assessing.

6. 6.

   If a truss experiences wind uplift of 1.8 kN/m² and a permissible uplift design factor is 1.4, calculate the safe uplift load that can be accommodated in truss design.

   Hint

   Remember, calculate based on the permissible uplift factors.