BC OWNER BUILDER EXAM 186 2026
CERTIFICATION EVALUATION EXAMS
COMPLETE QUESTIONS AND ANSWERS
◉ How high does a construction fence around a site need to be?
Answer: 6ft
◉ When do you need to install a handrail or wear fall protection?
Answer: 10 ft. above grade
◉ When installing the footer, it was dug down 2 inches deeper then
what the elevation should be. What needs to happen?
Answer: Install the footing form at proper elevation and fill with
extra concrete
◉ When installing flashing for a roof valley how much do the asphalt
shingles need to overlap it?
Answer: 6in
◉ What would cause a blister on a flat roof?
Answer: Moisture trapped under the roof
,◉ Water is backing up in a skylight what do you do to fix it?
Answer: Clear drainage
◉ What needs to be done first when starting to install asphalt
shingles on a roof?
Answer: Install eve protection
◉ What kind of fastener can you use in a wood that had been treated
with chromated copper arsenate (pressure treated)?
Answer: Lumber manufacturer approved fastener
◉ When should there be insulation under a basement slab?
Answer: When there is heating or above frost line
◉ How deep should the control joint be in a concrete slab?
Answer: 1/4 of the slab
◉ What kind of insulation should be installed under the slab?
Answer: XPS extruded poly styrene
◉ When framing a header of a staircase, the framer needs to know
the nailing pattern. Where does he get it?
,Answer: Use the BC code section 9 nailing pattern for the header
◉ What document must the owner submit to WorkSafe BC prior to
starting construction?
Answer: Notice of project
◉ What is the nailing/screw pattern for backer board?
Answer: Manufacturer approved pattern
◉ When installing a bi-fold door, the door binds at the side jamb on
the top what can be done?
Answer: Adjust the top pivot point
◉ What should be done when joist and beams have contact with
bare concrete wall?
Answer: Use pressure treated wood and leave 12 mm air space
◉ What is the minimum depth for a beam support (beam pocket in
foundation wall)?
Answer: Not less than 89mm, 3 inch
◉ When is a footing inspection conducted?
, Answer: When the forms and steel reinforcing are complete, but
prior to placing any concrete
◉ Sash hinged windows are called?
Answer: Casement
◉ What is the moisture permeability of 6mil poly?
Answer: 0.03 US perm (1.7 SI perm) or 1.7 ng
◉ New fire places come with an air box around the fire box what is it
for?
Answer: More controlled heat distribution
◉ When can BC Work Safe authority come to your construction site?
Answer: Anytime
◉ What is the best way to build a water tight wall?
Answer: Rain screen
◉ Moisture content of framing lumber at the time of installation
must not exceed?
Answer: 19%
CERTIFICATION EVALUATION EXAMS
COMPLETE QUESTIONS AND ANSWERS
◉ How high does a construction fence around a site need to be?
Answer: 6ft
◉ When do you need to install a handrail or wear fall protection?
Answer: 10 ft. above grade
◉ When installing the footer, it was dug down 2 inches deeper then
what the elevation should be. What needs to happen?
Answer: Install the footing form at proper elevation and fill with
extra concrete
◉ When installing flashing for a roof valley how much do the asphalt
shingles need to overlap it?
Answer: 6in
◉ What would cause a blister on a flat roof?
Answer: Moisture trapped under the roof
,◉ Water is backing up in a skylight what do you do to fix it?
Answer: Clear drainage
◉ What needs to be done first when starting to install asphalt
shingles on a roof?
Answer: Install eve protection
◉ What kind of fastener can you use in a wood that had been treated
with chromated copper arsenate (pressure treated)?
Answer: Lumber manufacturer approved fastener
◉ When should there be insulation under a basement slab?
Answer: When there is heating or above frost line
◉ How deep should the control joint be in a concrete slab?
Answer: 1/4 of the slab
◉ What kind of insulation should be installed under the slab?
Answer: XPS extruded poly styrene
◉ When framing a header of a staircase, the framer needs to know
the nailing pattern. Where does he get it?
,Answer: Use the BC code section 9 nailing pattern for the header
◉ What document must the owner submit to WorkSafe BC prior to
starting construction?
Answer: Notice of project
◉ What is the nailing/screw pattern for backer board?
Answer: Manufacturer approved pattern
◉ When installing a bi-fold door, the door binds at the side jamb on
the top what can be done?
Answer: Adjust the top pivot point
◉ What should be done when joist and beams have contact with
bare concrete wall?
Answer: Use pressure treated wood and leave 12 mm air space
◉ What is the minimum depth for a beam support (beam pocket in
foundation wall)?
Answer: Not less than 89mm, 3 inch
◉ When is a footing inspection conducted?
, Answer: When the forms and steel reinforcing are complete, but
prior to placing any concrete
◉ Sash hinged windows are called?
Answer: Casement
◉ What is the moisture permeability of 6mil poly?
Answer: 0.03 US perm (1.7 SI perm) or 1.7 ng
◉ New fire places come with an air box around the fire box what is it
for?
Answer: More controlled heat distribution
◉ When can BC Work Safe authority come to your construction site?
Answer: Anytime
◉ What is the best way to build a water tight wall?
Answer: Rain screen
◉ Moisture content of framing lumber at the time of installation
must not exceed?
Answer: 19%
