SLIDE 11 Proposed Change to National Building Code
Existing Code with Proposed Change:
5) Windows need not be protected in accordance with Sentence (4), where the bottom edge of the openable portion of the window is a) more than 900 mm above the finished floor, or the window serves a dwelling unit that is not located above another suite, a) the window serves a house with a secondary suite, b) the only opening greater than 100 mm by 380 mm is a horizontal
- pening at the top of the window,
c) the window sill is located more than 450 mm above the finished floor on one side of the window, or d) the window is located in a room or space with the finished floor described in Clause (d) b) located less than 1 800 mm above the floor or ground on the other side of the window. (See Note A-9.8.8.1.(4).)
Effectively: ▪ Openable able wind ndow in a singl gle e or two r two family ly re residenc dence e to be the same e as fo for r multi-famil family dwell llin ings gs re requiri ring: ng:
- Guard
- Limiter (permanent)
rmanent)
- Minimum 900mm (35”) openable sill
above floor OR OR
- Maximum 1800mm (70”) openable sill
above grade