Protection of Openable Windows

Confused over window requirements for residential buildings and early childhood centres??? 
Key considerations are:

  • Applies to bedrooms or early childhood centre windows more than 2m above the surface beneath.
  • Options:
  1. Fit a device or screen to restrict the window opening, so a 125mm diameter sphere cannot pass through;
  2. Provide a window sill to any opening at 1.7m or more above the floor.
  • Device or screen to be designed to resist 250N horizontal force.