Carport Considered to be Garage

[sunyaer]

This is from Ontario Building Code Division B:
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9.35.2.1. Carport Considered to be Garage
(1) Where a roofed enclosure used for the storage or parking of motor vehicles has more than 60 percent of the total perimeter enclosed by walls, doors or windows, the enclosure shall be considered a garage.
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When a carport does not meet this requirement and is not considered to be a garage, is the carport required to meet limiting distance for glazed openings facing the property line? (a carport with all sides open is proposed to be built close to one neighboring property line with small limiting distance, like 1.2 m. So the question is actually: is this carport allowed to be built with the side facing the neighbor open according to building code? assume municipal zoning is allowed.)

 

[Inspector Gadget]

Whether or not it's a garage or carport, if it's *attached* to a house, it must meet the spatial separation requirements of 9.10.15. (NBC)

If it's detached, it's under 9.10.14 - see NBC 9.10.14.4(8) and 9.10.14.4(10).

End answer; your unprotected openings must meet the spatial separation restrictions.

 

[tmurray]

yes, but still needs to mee spatial separation requirements.

 

[sunyaer]

yes, but still needs to meet spatial separation requirements.

Still need where there is more than 60% of the perimeter wall open to the air?

 

[Inspector Gadget]

Still need where there is more than 60% of the perimeter wall open to the air?

Yes. It makes no difference ... carport or garage .... it's still a structure and a fire load (ie: a car) that is potentially near another property line.

Presuming the long end of a 7m long, 2.8m tall carport, you could still have 60% openings at 4m limiting distance (assuming a 10m fire department response 90% of the time) But a completely open carport of the same size would only be possible at 5m.

The only question is which section of Code you're working from... 9.10.15 for carports attached to a single-family house, 9.10.14 for carports attached to accessory buildings or buildings of another occupancy.

The only real "benefit" to declaring a carport versus a garage is that
a) you can use 4x4 posts for supporting the roof (don't get me started)
b) no requirement for air-tight seals on the door/self-closing hinges/CO alarms in or within 5m of bedrooms.

 

[sunyaer]

…
The only question is which section of Code you're working from... 9.10.15 for carports attached to a single-family house, …

This is my situation. Three sides of the carport is open with one side at a limiting distance of 1.2 m to the adjacent property line. Does this carport comply with national building code of Canada?

 

[Inspector Gadget]

This is my situation. Three sides of the carport is open with one side at a limiting distance of 1.2 m to the adjacent property line. Does this carport comply with national building code of Canada?

Process and workflow habits will help you answer this question.

I need to know
a) Is the carport attached to a single-family house or single-family house with a secondary suite?
b) What is the fire department response? (10 min response 90% of the time?)
c) Length of the carport facing the property line
d) Height of the carport facing the property line (ground level facing the adjacent property line to the height of the supporting lintel/beam.)

Confirm the side facing the property line is unenclosed (ie: no walls).

 

[sunyaer]

Process and workflow habits will help you answer this question.

I need to know
a) Is the carport attached to a single-family house or single-family house with a secondary suite?
b) What is the fire department response? (10 min response 90% of the time?)
c) Length of the carport facing the property line
d) Height of the carport facing the property line (ground level facing the adjacent property line to the height of the supporting lintel/beam.)

Confirm the side facing the property line is unenclosed (ie: no walls).

a) single-family house with no secondary suite (how does this affect the carport?)
b) 10 minutes
c) 20 feet
d) 8 feet

Yes, the side facing the property line is unenclosed.

 

[Inspector Gadget]

a)

1) Detached garages have some relief from cladding and fire-resistance requirements under 9.10.14(5) that are not afforded garages attached to a single-family dwelling.
2) Garages attached to houses/houses with a secondary suite are afforded some fire-resistance relief that are NOT afforded to garages that are attached to other kinds of structures. (9.10.15 - for houses - is quite lenient versus 9.10.14).

Anyhow: these calculations are made using the formula that drive the part 3 tables.

Building (compartment) Width (m)	6.096
building (compartment) height (m)	2.44
Limiting Distance (m) (>= 1.2m)	1.2
Percentage openings allowed	7.78%