Loads

Loads

1. The loads applied must equal the internal loads resisted

   • Loads are factored for leeway
     • Forces in N, KN
       • Moments in Nmm (Force x distance)

2. Dead

   • How to calculate dead loads
     • 1) find the volume
       • area (m3) of a material x specific weight (Kn/m3)of a material
     • 2) Multiply by factor
   • Locked in loads
     • Compressive load due to thermal expansion
       • thermal bending if fixed ends beams
       • thermal rotation if hinged beams
     • Dynamic loads
       • impact loads
       • resonant loads

3. Live

4. Point loads

   • Act at a point
     • KN or N

5. Uniformly Distributed Loads

   • Acts along a line
     • KN/m or N/mm
       • Multiply over UDL over length to get point load

6. Area Loads

   • Acts on an area
     • KN/m2 or N/mm2
       • Multiply area load by tributary width to get UDL

7. Calculating a force from a mass

   • Force = mass x acceleration
   • KN or N
     • 1N = 1kg x m/s2