Owner Builder EXAM LATEST 2025
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS WITH
RATIONALES(VERIFIED
ANSWERS)|ALREADY GRADED A+
height of end dams on window and door flashings - Answers - ✔✔25mm or 1 inch
max rise in a flight of stairs - Answers - ✔✔3.7m
when is an HRV (heat recovery ventilation) required? - Answers - ✔✔almost always.
some exceptions in mild climates may have passive vents
permit needed for tree removal if tree is greater than - Answers - ✔✔8" or greater in
diameter
Order of inspections - Answers - ✔✔1: forms, basement and crawlspace
2: Plumbing, dampproofing, foundation drainage , sanitary sewer, storm sewer, sump,
water service
3: plumbing, electrical, mechanical, gas
4: framing inspection
5: insulation and vapour barrier
6: rainscreen/exterior finishs, drywall
7: building envelop inspection
8: final inspection
roof trusses are placed - Answers - ✔✔24" oc
floor joists are spaced out - Answers - ✔✔16"
fall protection must be used when fall height is - Answers - ✔✔10ft or if fall less than
that could result in injury
guardrail is required if - Answers - ✔✔4' drop
the house must be no closer than _____ from the front of the lot - Answers - ✔✔25'
minimum distance on all sides of the house is - Answers - ✔✔10'
when must slides of excavation be sloped - Answers - ✔✔if dig is over 4'
, shoring must be done when the trench is - Answers - ✔✔greater than 4' deep
gas lines are to be installed ______ on private property - Answers - ✔✔12 inches
With an overdig how much extra do you dig around the perimeter - Answers - ✔✔4-6
inches
For foundation drainage you should lay down - Answers - ✔✔4-6" of 3/4 gravel
Temperature of concreate must be maintained between - Answers - ✔✔10-25 degrees
step footings have a maximum rise and minimum run of - Answers - ✔✔2' (600mm)
crawlspaces must be _________ and _____________ - Answers - ✔✔heated and
ventilated
windows wells must be __________ above final grade - Answers - ✔✔4-6"
window well projection must be at least _________ for bedrooms - Answers - ✔✔30
inches
bottom of a window well must extend _______ below the window - Answers - ✔✔10-12
inches
what moisture barrier is placed under slab foundations and crawlspaces - Answers -
✔✔6-15 poly
moisture barrier seams must be overlapped ____ inches - Answers - ✔✔12
water meters must be placed _________ inches from the property line - Answers -
✔✔12
the sump must be placed within _________ feet of the building - Answers - ✔✔6
basement slab minimum thickness is - Answers - ✔✔4"
anchor bolts maximum spacing is - Answers - ✔✔8 inches
maximum notch on joists is - Answers - ✔✔1/3 of joist depth
remaining portion on non load bearing stud after notch is - Answers - ✔✔40 mm
EXAM QUESTIONS AND CORRECT
DETAILED ANSWERS WITH
RATIONALES(VERIFIED
ANSWERS)|ALREADY GRADED A+
height of end dams on window and door flashings - Answers - ✔✔25mm or 1 inch
max rise in a flight of stairs - Answers - ✔✔3.7m
when is an HRV (heat recovery ventilation) required? - Answers - ✔✔almost always.
some exceptions in mild climates may have passive vents
permit needed for tree removal if tree is greater than - Answers - ✔✔8" or greater in
diameter
Order of inspections - Answers - ✔✔1: forms, basement and crawlspace
2: Plumbing, dampproofing, foundation drainage , sanitary sewer, storm sewer, sump,
water service
3: plumbing, electrical, mechanical, gas
4: framing inspection
5: insulation and vapour barrier
6: rainscreen/exterior finishs, drywall
7: building envelop inspection
8: final inspection
roof trusses are placed - Answers - ✔✔24" oc
floor joists are spaced out - Answers - ✔✔16"
fall protection must be used when fall height is - Answers - ✔✔10ft or if fall less than
that could result in injury
guardrail is required if - Answers - ✔✔4' drop
the house must be no closer than _____ from the front of the lot - Answers - ✔✔25'
minimum distance on all sides of the house is - Answers - ✔✔10'
when must slides of excavation be sloped - Answers - ✔✔if dig is over 4'
, shoring must be done when the trench is - Answers - ✔✔greater than 4' deep
gas lines are to be installed ______ on private property - Answers - ✔✔12 inches
With an overdig how much extra do you dig around the perimeter - Answers - ✔✔4-6
inches
For foundation drainage you should lay down - Answers - ✔✔4-6" of 3/4 gravel
Temperature of concreate must be maintained between - Answers - ✔✔10-25 degrees
step footings have a maximum rise and minimum run of - Answers - ✔✔2' (600mm)
crawlspaces must be _________ and _____________ - Answers - ✔✔heated and
ventilated
windows wells must be __________ above final grade - Answers - ✔✔4-6"
window well projection must be at least _________ for bedrooms - Answers - ✔✔30
inches
bottom of a window well must extend _______ below the window - Answers - ✔✔10-12
inches
what moisture barrier is placed under slab foundations and crawlspaces - Answers -
✔✔6-15 poly
moisture barrier seams must be overlapped ____ inches - Answers - ✔✔12
water meters must be placed _________ inches from the property line - Answers -
✔✔12
the sump must be placed within _________ feet of the building - Answers - ✔✔6
basement slab minimum thickness is - Answers - ✔✔4"
anchor bolts maximum spacing is - Answers - ✔✔8 inches
maximum notch on joists is - Answers - ✔✔1/3 of joist depth
remaining portion on non load bearing stud after notch is - Answers - ✔✔40 mm
