Location of Firewall

Can we put firewalls on any location we like to build one huge building?
There are 3 firewalls on the floor plan below. What are the implications of these firewalls in our design?
#design #building #firewalls

Firewall vs Fire Separation

On the following two floor plans, one has a 1h fire separation and the other has a 2h firewall at the same location.
What shall we consider differently in designing? Please give your list of differences by comments.
#firewalls #fireseparation

Tell the Difference

2015 National Building Code

9.10.4.4. Roof-Top Enclosures

1) Roof-top enclosures provided for elevator machinery, stairways or service rooms, used for no purpose other than for service to the building, shall not be considered as a storey in calculating the building height.

2018 BC Building Code

9.10.4.4. Roof-Top Enclosures

1) A roof-top enclosure shall not be considered as a storey in calculating the building height if the roof-top enclosure is provided for

a) elevator machinery,

b) a service room,

c) a stairway used for no purpose other than for access or egress,

d) an elevator lobby used for no purpose other than for access or egress, or

e) a combination thereof

The difference is:

If you are designing a 3 storey townhouse with a roof top patio and stairway, it will be 3 storey in BC, but 4 storey in other provinces, such as Alberta and Saskatchewan.