OBC Practice Exam – House – Tauton Services Ltd.

#1. The maximum spacing of lateral support for the 230mm loadbearing cavity wall is:

3066 mm

2780 mm

4320 mm

2800 mm

#2. Except for sliding glass partitions that separate a public corridor from an adjacent occupancy and that are open during normal working hours, transparent panels that could be mistaken as a means of egress shall be:

Suitably marked to indicate their existence and position

Tempered glass

Protected by barriers or railings

Colored glass

#3. When the foundation wall of the House is constructed as a prescribed flat ICF foundation wall, the concrete:

must conform to CAN/CSA-A23.1, “Concrete Materials and Methods of Concrete Construction, with a maximum aggregate size of 19 mm and Part 4, Structural Design”

must conform to CAN/CSA-A23.1, “Concrete Materials and Methods of Concrete Construction”, with a maximum aggregate size of 19 mm or Part 4, “Structural Design”

must be site-batched

can be site-batched,

#4. The function of the of the second plane of protection is to:

provide a continuous barrier to air leakage

minimize the passage of rain and snow into the exterior wall assembly

prevent condensation in the exterior wall space

intercept and effectively dissipate to the exterior any precipitation that gets past the first plane of protection

#5. A washroom containing plumbing fixtures for restaurant employees shall be located in;

the building within 45 m

the restaurant

within 45 m

the building

#6. What is the minimum size of pickets in accordance with Detail ED-1 in SB-7?

89 X 89

38 X 89

32 X 32

45 X 45

#7. An exterior exit door is located in an exterior wall at the main floor of a three storey office building. There is no internal enclosure to the exit stair and the main floor has a single tenancy (i.e., no public corridor). Adjacent to the exit door is a window which is 1 200 mm away from the door; this window;

must be protected with wired glass in fixed steel frames

no window protection is required

must be protected with wired glass infixed steel frames or glass block

must be protected with glass block

#8. OSB and waferboard panels used as cladding must have all their vertical and horizontal edges supported and treated with:

a sealer

a primer or sealer

a primer

suitable paint or sealer

#9. The minimum length of nails for the attachment of wood trim is:

40

32

38

51

#10. Wood ledger boards supporting floor joists that span 4.2 m must be anchored to flat ICF walls with:

staggered 16 mm anchor bolts that are spaced not more than 400 mm apart

staggered 12.7 mm anchor bolts that are not more than 300 mm apart

staggered 12.7 mm anchor bolts that are not more than 275 mm apart

secured joist hangers

#11. Interior wall finishes for garages;

must comply with Section 9.29., "Interior Wall and Ceiling Finishes"

must have the same surface flame spread rating as required for the house

must be provided only where insulation is provided or required

are not required (however gas proofing may be required in certain instances).

#12. Wooden stairs used as an exit stair for a Group D occupancy span from the 1st floor to the 2nd floor. The stairs are free-standing. What is the minimum stringer size?

25 X 235 on each side of the stair

38 X 235 on each side of the stair

38 X 235 @ 600 mm o/c

25 X 235 @ 900 mm o/c

#13. At the intersection of masonry chimney and a shingle roof, counter flashing

shall be embedded not less than 50 mm in the masonry

shall be caulked along the top to create a seal with the masonry wall

shall be embedded not less than 25 mm in the masonry

shall extend not less than 75 mm behind the sheathing paper

#14. Tents not occupied by the public are required to be separated from each other by

at least 6 m

as required for the means of egress

at least 3 m

No requirement as long as the condition is considered afe

#15. Granular material under slabs-on-ground is;

not required under slabs-on-ground if the slab rests on undisturbed soil

only required under structural slabs-on-ground

not required under garage slabs-on-ground

required under all slabs-on-ground

#16. Grab bars in water closet stalls that are required to be Barrier-Free accessible must be designed to resist the following load(s);

1.3 kN applied horizontally and vertically

11.3 kN applied vertically

1.3 kN applied horizontally

1.3 kN applied horizontally or vertically

#17. The minimum vertical clearance from an entrance to a parking storey provided with Barrier-Free access is;

2 750 mm

2 000 mm

1 600 mm

2 100 mm

#18. According to Row 2, Column 3 of Table 9.15.3.4., the minimum width of strip footings supporting interior walls of a two storey house is 350 mm. If the House was to be constructed on gravel, sand or silt where the elevation of the water table was 450 mm below the underside of footing elevation, the width of the footing supporting an interior load- bearing partition (without masonry) would need to be a minimum of:

700 mm

350 mm

as required by design under Part 4

1 000 mm

#19. The maximum temperature for hot water is

60°C

49°C

49°F

(d) in accordance with the service water heater's manufacturer's instructions

#20. The expansion gap between sheets of panel-type roof sheathing must:

not be more than 20 mm

not be less than 2.0 mm

not be more than 2.0 mm

not be less than 20 mm

#21. Asphalt-coated or asphalt-impregnated fibreboard conforming to CAN/ULC-S706, “Wood Fibre Thermal Insulation for Buildings”, is permitted to be used as a roof sheathing over supports spaced not more than 406 mm o.c., the fiberboard to be

not less than 11.1 mm thick

not more than 11.1 mm thick

not less than 12.7 mm thick

not more than 12.7 mm thick

#22. Concrete for a column must have a compressive strength, after 28 days, of not less than:

15 MPa and reinforced in accordance with part 4

32 MPa

15 MPa

20 MPa

#23. 4. A dwelling unit that contains sleeping accommodations for not more than 2 persons contains:

two bedrooms or bedroom spaces in combination with other spaces

two bedrooms

one bedroom or bedroom space in combination with other spaces

one bedroom

#24. The minimum thickness for matched hardwood wood strip flooring applied on joists spaced at mm o/c with a plywood subfloor is;

7.9 mm

38.1 mm

19 mm

25.4 mm

#25. What would be the stud size, thickness and spacing for a non-loadbearing exterior wall 3 500 mm high?

30 mm × 91 mm × 0.85 mm @ 305 mm o.c. max.

30 mm × 91 mm × 1.0 mm @ 406 mm o.c. max.

30 mm × 91 mm × 0.85 mm @ 406 mm o.c. max.

30 mm × 91 mm × 0.53 mm @ 305 mm o.c. max.

#26. What is the minimum required width of strip footing (dimension “A”) for the wall shown?

450 mm

710 mm

No prescriptive solution

480 mm

#27. The minimum footing sizes of Table 9.15.3.4. are based on a maximum specified live load, on any floor supported by the footings, of:

2.4kPa

3.6kPa

1.9kPa

1.4kPa

#28. The maximum surface flame spread rating for enclosing material in a crawl space is

150

200

75

100

#29. A required guard in a Group D occupancy is required to be;

900 mm high

1800 mm high

1070 mm high

800 mm high

#30. if a building is built of masonry units in a earthquake area and it is determined that the total amount of reinforcing steel is to be 750 mm2, what is the minimum amount of horizontal steel in this case?

200 mm2

250 mm2

100 mm2

150 mm2

#31. The depth of chases located in 240 mm thick masonry walls are limited to

are not permitted.

100 mm

75 mm

1/3 of the thickness of the wall

#32. According to Table 4.1.5.3., by way of Clauses 9.4.1.1.(1)(c), 9.23.4.1.(1)(a) and (b), the minimum specified uniformly distributed live load on any area of floor other than floors of bedrooms in Houses is

2.4 kPa

3.6 kPa

1.4kPa

1.9 kPa

#33. The maximum height for a handrail on a ramp serving a Group C occupancy is

965 mm

1 100 mm

1 070 mm

800 mm

#34. Mirrored glass doors conforming to CAN/CGSB-82.6-M, “Doors, Mirrored Glass, Sliding or Folding, Wardrobe” and mirrored glass doors reinforced with a film backing that meet the impact resistance requirements specified in CAN/CGSB-12.5-M, “Mirrors, Silvered” may be used

bedroom door

mechanical room door

on any door to a at the entrance to clothes closets clothes closet

study room door

#35. The minimum length of nails for the attachment of metal siding is:

52 mm

38 mm

31 mm

40 mm

#36. Wood frame foundation walls enclosing a crawl space must conform to

CAN3-S406-M93, "Construction of Preserved Wood Foundations"

Part 4

CAN3-S406-M93, "Construction of Preserved Wood Foundations" or Part 4

to the requirements of Section 9.23. Wood-Frame Construction

#37. As a general rule, a wall plate in a stud wall comprised of 38 mm × 64 mm studs is:

38 mm × 64 mm on edge

19 mm × 64 mm

38 mm wide

38 mm × 64 mm on the flat

#38. Waferboard or OSB subflooring must be installed with the direction of face orientation:

at an angle of not less than 45° to the direction of the floor joists

perpendicular to the direction of the floor joists

parallel to the direction of the floor joists

at an angle of 45° or more to the direction of the floor joists

#39. Combined occupancies that are prohibited include;

Group F, Division 2, major occupancy and a Group C major occupancy

Group F, Division 1, major occupancy and Group D major occupancy

Group F. Division 1 major occupancy and Group A, B or C occupancies

Group F, Division 2, major occupancy and a live/work unit

#40. in a Division B Part 9 house, if the space between roof joists in a cathedral ceiling with a slope of 1 in 3 are installed, the ratio of vent area to insulated ceiling area to be provided shall be not less than:

1:150

No venting required

1:300

1:450

#41. As a general rule, the provisions found in Section 9.20. apply to unreinforced walls that are;

designed by an architect or an engineer

not more than 3 storeys high

up to 11 m high

unlimited in height.

#42. Lumber roof sheathing must not be wider than

235 mm

184 mm

89 mm

286 mm

#43. A second storey window in a lounge area in a seniors' apartment building (i.e., Group C Residential and NOT Group B lnstitutional)extends to within 300 mm of the finish floor. That window is required to be

only made of wired glass

made of tempered safety glass

may be made of regular glass

protected with a guard

#44. A kitchen that is 7 m2 in a dwelling unit designed to accommodate more than 2 persons the minimum ceiling height of 2 300 mm must be provided over an area of not less than:

2.78 M2

4,20 M2

5.25 M2

3.15 M2

#45. A projecting sign overhangs a sidewalk; the minimum clearance to this sign is;

4.25 m

not permitted

7.5 m

2.4 m

#46. If the minimum width of the strip footing supporting the exterior walls of the a House is at 480 mm. If the House was to be constructed on gravel, sand or silt where the elevation of the water table was 450 mm below the underside of footing elevation, the width of the footing supporting the exterior walls would need to be a minimum of:

960 mm

as required by design under Part 4

900 mm

1 000 mm

#47. Blocking between framing members that is referenced in Sentence 9.27.5.1.(1) must not be less than:

than the size of the studs to which they are fastened

38 mm × 38 mm

38 mm × 89 mm

89 mm × 9.5 mm

#48. Which one of the following is NOT an acceptable method of supporting an assembly in a non-combustible construction building, and required to have a fire resistance rating of not less than 1.5 h:

1.5 h rated protected steel beams and columns

2h rated poured concrete wall

2h rated block wall

1h rated load-bearing steel stud wall

#49. In a three storey Group D building, the windows located above the first storey are required to

not open more than 100 mm vertically or horizontally

be designed to resist the loads for a balcony guard,

be protected by a guard,

not regulated by the Ontario Building Code

#50. A parapet wall for a part 9 building shall

be not less than 3 times the wall thickness in height above the adjacent roof surface

be not more than 3 times the wall thickness in height above the adjacent roof surface

be solid masonry that extends from the top of the parapet wall to not more than 300 mm below the adjacent roof level

Be non combustible construction

#51. The roof framing supported on the top of an ICF wall must be fixed to a top plate which is anchored to the wall with anchor bolts:

of not less than 12.7 mm in diameter and not less than 100 mm long and spaced not more than 1 200 mm o.c.

in accordance with Table 9.23.3.4.

of not less than 12.7 mm in diameter

of not less than 12.7 mm in diameter and embedded not less than 100 mm into the concrete and spaced not more than 1 200 mm o.c.

#52. A curved stair is being used as an exit serving a Group E occupancy. What is the minimum tread run exclusive the nosing?

no limit

240 mm

230 mm

335 mm

#53. A self-service storage building has an occupant load of 50. How many water closets and lavatories are required?

4 / sex

no washrooms are required.

3/ sex

2 / sex

#54. The maximum slope for an exterior pedestrian ramp serving a Group D occupancy is;

1 in 6

1 in 12

1 in 8

1 in 10

#55. A building has 4 pedestrian entrances. How many of those entrances must be Barrier-Free entrances?

3

2

1

4

#56. Struts used to provide intermediate support for roof framing members must be inclined by:

45° to the horizontal

not less than 45° to the horizontal

not more than 45° from the horizontal

45° to the vertical

#57. A House occupied year-round has a basement and a single storey with cathedral ceilings attached to roof joists. It is equipped with electric baseboard heaters and has two air circulation fans hanging from cathedral ceilings. What is the minimum nominal thermal resistance of ceiling insulation if the House was constructed in Kapuskasing?

RSI 4.40

RSI 2.80

RSI 8.81

RSI 5.46

#58. If an owner wants to build ICF foundation walls for the basement, what he needs to do?

The ICF wall must have R10 interior and R10 exterior insulation for all the compliance package

Except package A5, the ICF wall must have R10 interior and R10 exterior insulation

must be min 10" thick

use qualified manufacture supplied ICF foundation wall

#59. A suite serves a business and personal services occupancy, has an area of 150 m2 and the distance to the nearest egress door is 30 m. How many egress doors are required?

as many as required to have a 25 m max. travel distance

1

as many as required to have a 40 m max travel distance

2 minimum

#60. When the foundation wall of a House is constructed as a prescribed flat ICF foundation wall, the maximum spacing of horizontal reinforcement for the wall is:

1-10M bar placed not more than 300 mm from the bottom of the foundation wall and 10M bars spaced not more than 600 mm o.c.

1-10M bar not more than 300 mm from the bottom of the foundation wall

1-10M bar not more than 300 mm from the top of the foundation wall

1-10M bar placed not more than 300 mm from the top of the foundation wall and 10M bars spaced not more than 600 mm o.c.

#61. According to division B, Subsection 9.10.18., a janitor room:

Must be sprinklered

Can be separated from the remainder of the building by a fire separation

Must be provided with a smoke detector

Must be provided with a heat or smoke detector, if a fire alarm system is required.

#62. An unfinished basement has an area of 100 m2. How many lighting fixtures are required

3

4

as long as the illumination output is adequate

5

#63. The minimum uniformly distributed live load (UDL) for Exterior balcony that serves a single dwelling unit in a House is:

1.9 kpa

0.35 kpa

2.4 kpa

1.0 kpa

#64. In a house, a bedroom door shall be NOT less than:

810 mm wide by 2100 mm high

810 mm wide by 1980 mm high

610 mm wide by 2100 mm high

760 mm wide by 1980 mm high

#65. An interior stair not serving a dwelling unit is required to have a landing(s) at the

bottom only if the door at the top swings away from the stair

top and bottom of the stair

top only

top and bottom of the stair and where a doorway occurs

#66. A roof, with Code complying asphalt fibreboard sheathing, may support the following type of roofing.

0.61 mm thick aluminum steel sheets

cedar shingles or shakes

low slope asphalt shingles

built-up roofing

#67. In loadbearing flat ICF walls, what is the maximum opening that can be utilized without a lintel?:

1 200 mm

1 000 mm

900 mm

800 mm

#68. A laundry dyer exhaust duct in a division B, Part 9 house:

Can be installed in an enclosed location not accessible for maintenance

Is permitted to be connected to another exhaust duct

Can have its interior lined with insulation

Is NOT permitted to be interconnected with any other exhaust duct

#69. A 0.76 mm carbon steel sheet connector is required to have corrosion-resistance which is in accordance with

ASTM A123/A123M and a coating of 305 g/m²

ASTM A123/A123M and a coating of 610 g/m²

ASTM A153/A153M and a Class B2 coating

ASTM A153/A153M and a coating as per ASTM A153

#70. If the construction site has high water table issue, the width of foundation (dimension “A”) to be:

To determine the width of foundation wall, the allowable bearing capacity of soil shall be 50% of that determined in accordance with article 9.4.4.1.

No change

Doubled regardless the soil bearing capacity

1.5 times

#71. An exit doorway serving more than one dwelling unit that has a pair of doors and both are active leaves, they shall be

no limitation

not less than 1210 mm wide

more than 800 mm wide

not less than 800 mm wide

#72. The minimum thickness of plywood cladding (face grain parallel to studs at 400 mm o.c) applied over sheathing is

8 mm

9 mm

6 mm

11 mm

#73. A building being used as a seasonal recreational building need not to comply with the following previsions as found in part 9 except for the following::

minimum window sizes for natural fighting

spatial separation

minimum door sizes

minimum headroom clearance above stairs.

#74. What is the maximum width of lumber subflooring applied to joists at 406 mm o.c.?

19.0 mm

184 mm

286 mm

any width provided that ir is uniform

#75. Slab on ground that support a roof load in a one storey part 9 building

must be increased by twice the minimum thickness found in part 9

must be designed using part 4

must be designed using Part 4

may be desined using the requirement found in Part 9

OBC Practice Exam – House

#1. The maximum spacing of lateral support for the 230mm loadbearing cavity wall is:

#2. Except for sliding glass partitions that separate a public corridor from an adjacent occupancy and that are open during normal working hours, transparent panels that could be mistaken as a means of egress shall be:

#3. When the foundation wall of the House is constructed as a prescribed flat ICF foundation wall, the concrete:

#4. The function of the of the second plane of protection is to:

#5. A washroom containing plumbing fixtures for restaurant employees shall be located in;

#6. What is the minimum size of pickets in accordance with Detail ED-1 in SB-7?

#8. OSB and waferboard panels used as cladding must have all their vertical and horizontal edges supported and treated with:

#9. The minimum length of nails for the attachment of wood trim is:

#10. Wood ledger boards supporting floor joists that span 4.2 m must be anchored to flat ICF walls with:

#11. Interior wall finishes for garages;

#12. Wooden stairs used as an exit stair for a Group D occupancy span from the 1st floor to the 2nd floor. The stairs are free-standing. What is the minimum stringer size?

#13. At the intersection of masonry chimney and a shingle roof, counter flashing

#14. Tents not occupied by the public are required to be separated from each other by

#15. Granular material under slabs-on-ground is;

#16. Grab bars in water closet stalls that are required to be Barrier-Free accessible must be designed to resist the following load(s);

#17. The minimum vertical clearance from an entrance to a parking storey provided with Barrier-Free access is;

#19. The maximum temperature for hot water is

#20. The expansion gap between sheets of panel-type roof sheathing must:

#21. Asphalt-coated or asphalt-impregnated fibreboard conforming to CAN/ULC-S706, “Wood Fibre Thermal Insulation for Buildings”, is permitted to be used as a roof sheathing over supports spaced not more than 406 mm o.c., the fiberboard to be

#22. Concrete for a column must have a compressive strength, after 28 days, of not less than:

#23. 4. A dwelling unit that contains sleeping accommodations for not more than 2 persons contains:

#24. The minimum thickness for matched hardwood wood strip flooring applied on joists spaced at mm o/c with a plywood subfloor is;

#25. What would be the stud size, thickness and spacing for a non-loadbearing exterior wall 3 500 mm high?

#26. What is the minimum required width of strip footing (dimension “A”) for the wall shown?

#27. The minimum footing sizes of Table 9.15.3.4. are based on a maximum specified live load, on any floor supported by the footings, of:

#28. The maximum surface flame spread rating for enclosing material in a crawl space is

#29. A required guard in a Group D occupancy is required to be;

#30. if a building is built of masonry units in a earthquake area and it is determined that the total amount of reinforcing steel is to be 750 mm2, what is the minimum amount of horizontal steel in this case?

#31. The depth of chases located in 240 mm thick masonry walls are limited to

#32. According to Table 4.1.5.3., by way of Clauses 9.4.1.1.(1)(c), 9.23.4.1.(1)(a) and (b), the minimum specified uniformly distributed live load on any area of floor other than floors of bedrooms in Houses is

#33. The maximum height for a handrail on a ramp serving a Group C occupancy is

#34. Mirrored glass doors conforming to CAN/CGSB-82.6-M, “Doors, Mirrored Glass, Sliding or Folding, Wardrobe” and mirrored glass doors reinforced with a film backing that meet the impact resistance requirements specified in CAN/CGSB-12.5-M, “Mirrors, Silvered” may be used

#35. The minimum length of nails for the attachment of metal siding is:

#36. Wood frame foundation walls enclosing a crawl space must conform to

#37. As a general rule, a wall plate in a stud wall comprised of 38 mm × 64 mm studs is:

#38. Waferboard or OSB subflooring must be installed with the direction of face orientation:

#39. Combined occupancies that are prohibited include;

#40. in a Division B Part 9 house, if the space between roof joists in a cathedral ceiling with a slope of 1 in 3 are installed, the ratio of vent area to insulated ceiling area to be provided shall be not less than:

#41. As a general rule, the provisions found in Section 9.20. apply to unreinforced walls that are;

#42. Lumber roof sheathing must not be wider than

#43. A second storey window in a lounge area in a seniors' apartment building (i.e., Group C Residential and NOT Group B lnstitutional)extends to within 300 mm of the finish floor. That window is required to be

#44. A kitchen that is 7 m2 in a dwelling unit designed to accommodate more than 2 persons the minimum ceiling height of 2 300 mm must be provided over an area of not less than:

#45. A projecting sign overhangs a sidewalk; the minimum clearance to this sign is;

#47. Blocking between framing members that is referenced in Sentence 9.27.5.1.(1) must not be less than:

#48. Which one of the following is NOT an acceptable method of supporting an assembly in a non-combustible construction building, and required to have a fire resistance rating of not less than 1.5 h:

#49. In a three storey Group D building, the windows located above the first storey are required to

#50. A parapet wall for a part 9 building shall

#51. The roof framing supported on the top of an ICF wall must be fixed to a top plate which is anchored to the wall with anchor bolts:

#52. A curved stair is being used as an exit serving a Group E occupancy. What is the minimum tread run exclusive the nosing?

#53. A self-service storage building has an occupant load of 50. How many water closets and lavatories are required?

#54. The maximum slope for an exterior pedestrian ramp serving a Group D occupancy is;

#55. A building has 4 pedestrian entrances. How many of those entrances must be Barrier-Free entrances?

#56. Struts used to provide intermediate support for roof framing members must be inclined by:

#58. If an owner wants to build ICF foundation walls for the basement, what he needs to do?

#59. A suite serves a business and personal services occupancy, has an area of 150 m2 and the distance to the nearest egress door is 30 m. How many egress doors are required?

#60. When the foundation wall of a House is constructed as a prescribed flat ICF foundation wall, the maximum spacing of horizontal reinforcement for the wall is:

#61. According to division B, Subsection 9.10.18., a janitor room:

#62. An unfinished basement has an area of 100 m2. How many lighting fixtures are required

#63. The minimum uniformly distributed live load (UDL) for Exterior balcony that serves a single dwelling unit in a House is:

#64. In a house, a bedroom door shall be NOT less than:

#65. An interior stair not serving a dwelling unit is required to have a landing(s) at the

#66. A roof, with Code complying asphalt fibreboard sheathing, may support the following type of roofing.

#67. In loadbearing flat ICF walls, what is the maximum opening that can be utilized without a lintel?:

#68. A laundry dyer exhaust duct in a division B, Part 9 house:

#69. A 0.76 mm carbon steel sheet connector is required to have corrosion-resistance which is in accordance with

#70. If the construction site has high water table issue, the width of foundation (dimension “A”) to be:

#71. An exit doorway serving more than one dwelling unit that has a pair of doors and both are active leaves, they shall be

#72. The minimum thickness of plywood cladding (face grain parallel to studs at 400 mm o.c) applied over sheathing is

#73. A building being used as a seasonal recreational building need not to comply with the following previsions as found in part 9 except for the following::

#74. What is the maximum width of lumber subflooring applied to joists at 406 mm o.c.?

#75. Slab on ground that support a roof load in a one storey part 9 building

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