BC Owner Builder Test| Ques ons and answers |
Updated RATED A+ | 2026
At what depth is shoring required?
1.2m/4
Which is not an acceptable method for determining the correct grading for a trench?
An experienced excavator says it's ok
Which best describes the principle of rain water deflec%on?
Design and construc%on that prevents water from ever entering
What ligh%ng safety cer%fica%ons are required in Canada?
CSA safety cer%fica%on
What grit of sandpaper would get the smoothest result?
Higher grit with get a smoother finish
What is the maximum rise in a flight of stairs?
The ver%cal height of any flight of stairs should not exceed 3.7m
What is the minimum distance that a ladder must extend above a parapet wall or landing?
3
What heights are end dams to be on windows and door flashings?
25mm/1 inch
When should you call for inspectors to make them efficient as possible?
Group inspectors together when possible and call when work is complete
When is an HRV required?
Almost always
What can you build under the owner-builder HPO process?
Single detached home under a single %tle. Single dwelling a6ached to pre-exis%ng building older
than 10 years. Single dwelling a6ached to a new non-residen%al building.
, Who issues permits for a gas fireplace?
Safety Authority (call Technical Safe BC)
Can an owner builder take out their own electrical permit?
Yes, up to 200A
What is the best way to apply asphalt waterproofing on a founda%on?
Spray-on or roll on dry founda%on with 2in. below grade
When is the appropriate %me to backfill a founda%on?
A er damp-proofing
What do you need to do when applying a peel and s%ck waterproof membrane founda%on?
Use an approved primer before installing
What are gas meter installa%on requirements?
The distance from the gas vent to the roof must be greater than the overhang of the roof,
nothing can be with in 1m either side or 4.5m above a gas meter
When do you need to install a handrail or have fall protec%on?
10 , 4 if no fall protec%on
How high does a construc%on fence around a site need to be?
6
When installing the footer, it was dug down 2in. deeper than what the eleva%on should be.
What needs to happen?
Install the foo%ng form at proper eleva%on and fill with extra concrete
When installing flashing for a roof valley how much do the asphalt shingles need to overlap?
6in.
What would cause a blister on a flat roof?
Moisture trapped under roof
Water is backing up in a skylight, what do you do to fix it?
Clear drainage
What needs to be done first when star%ng to install asphalt shingles on a roof?
Updated RATED A+ | 2026
At what depth is shoring required?
1.2m/4
Which is not an acceptable method for determining the correct grading for a trench?
An experienced excavator says it's ok
Which best describes the principle of rain water deflec%on?
Design and construc%on that prevents water from ever entering
What ligh%ng safety cer%fica%ons are required in Canada?
CSA safety cer%fica%on
What grit of sandpaper would get the smoothest result?
Higher grit with get a smoother finish
What is the maximum rise in a flight of stairs?
The ver%cal height of any flight of stairs should not exceed 3.7m
What is the minimum distance that a ladder must extend above a parapet wall or landing?
3
What heights are end dams to be on windows and door flashings?
25mm/1 inch
When should you call for inspectors to make them efficient as possible?
Group inspectors together when possible and call when work is complete
When is an HRV required?
Almost always
What can you build under the owner-builder HPO process?
Single detached home under a single %tle. Single dwelling a6ached to pre-exis%ng building older
than 10 years. Single dwelling a6ached to a new non-residen%al building.
, Who issues permits for a gas fireplace?
Safety Authority (call Technical Safe BC)
Can an owner builder take out their own electrical permit?
Yes, up to 200A
What is the best way to apply asphalt waterproofing on a founda%on?
Spray-on or roll on dry founda%on with 2in. below grade
When is the appropriate %me to backfill a founda%on?
A er damp-proofing
What do you need to do when applying a peel and s%ck waterproof membrane founda%on?
Use an approved primer before installing
What are gas meter installa%on requirements?
The distance from the gas vent to the roof must be greater than the overhang of the roof,
nothing can be with in 1m either side or 4.5m above a gas meter
When do you need to install a handrail or have fall protec%on?
10 , 4 if no fall protec%on
How high does a construc%on fence around a site need to be?
6
When installing the footer, it was dug down 2in. deeper than what the eleva%on should be.
What needs to happen?
Install the foo%ng form at proper eleva%on and fill with extra concrete
When installing flashing for a roof valley how much do the asphalt shingles need to overlap?
6in.
What would cause a blister on a flat roof?
Moisture trapped under roof
Water is backing up in a skylight, what do you do to fix it?
Clear drainage
What needs to be done first when star%ng to install asphalt shingles on a roof?
