OBC Practice Exam – House – Tauton Services Ltd.

#1. The minimum uniformly distributed live load (UDL) for the stairs serving dwelling unit in a House

1.0 kpa

2.4 kpa

1.9 kpa

not specified

#2. A home is being designed for year round residence in Atikokan and utilizes wall sheathing with an air leakage characteristic of 0.09 L/(s×m2) at 75Pa and water vapour permeance of 50 ng/(Pa×s×m2). What is the value of the Ratio of Outboard to Inboard Thermal Resistance given for this location and material condition?

0.20

0.30

0.40

0.35

#3. In a building serving a Group D occupancy only, a third storey window located in an exit stair extends to 1000 mm above the finish floor. That window must be;

made of tempered safety glass

made of wired glass,

protected with a guard

suitably marked

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

perpendicular to the direction of the floor joists

parallel to the direction of the floor joists

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

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

#5. 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

#6. The maximum roof slope for asphalt base (without gravel) of Built-up Roofing is

1 in 2

1 in 3

1 in 4

no limit

#7. A house is to be constructed in Hamilton below escarpment and east of Highway 403. The building area is 8 m by 12 m. The specified design snow load for roof framing is:

0.9 kPa

0.4 kPa

0.895 kPa

1.005 kPa

#8. What is the minimum thickness for hardboard interior finish panels placed directly on studs at 406 mm o.c.?

3 mm

6 mm

9 mm

11.1 mm

#9. The minimum thickness of panel-type underlay is

6 mm

7.9 mm

9.5 mm

12.7 mm

#10. Loadbearing elements in a two storey building of masonry construction are required to have earthquake reinforcement described in Subsection 9.20.15. if the seismic spectral acceleration

Sa(0.2) is not greater than 0.35

Sa(0.2) is greater than 0.35

Sa(0.2) is not greater than 0.55

Sa(0.2) is greater than 0.55

#11. In a dwelling unit, hot and cold water must be provided to the following fixtures;

hose bibs and water closets

kitchen sink and laundry area

bathtubs and shower areas only

all fixtures.

#12. A three way switch is requied at the head and bottom of a stair from the first to second level in a side split house if stairshave

3 or more risers

4 or more risers

5 or more risers

all stairs require lighting

#13. In a house, a guard serving exit stairwell opening between the ground floor and second floor shall be not less than:

900mm

920mm

965mm

1070mm

#14. The spout on a drinking fountain located in a Barrier-Free path of travel is to be located not more than:

865 mm above the floor

900 mm above the floor

915 mm above the floor

1200 mm above the floor

#15. In a steel storage building, a mezzanine that supports mechanical equipment at the back of the building and to which access is provided for maintenance purposes only. The height of the guard required around the mezzanine is:

No minimum

920 mm

860 mm

1070 mm

#16. An air-supported structure occupied by the public must be separated from other structures on the same property by a minimum of;

less than 3 m

more than 3 m

as required by the spatial separation requirements

at least 6 m

#17. The minimum compressive strength for concrete used for concrete slabs-on-ground is;

15 MPa at 28 days

20 MPa at 28 days

25 MPa at 28 days

30 MPa at 28 days

#18. What is the minimum metal thickness of steel studs exclusive of any coatings in an interior non-loadbearing wall with no required fire-resistance rating?

0.46 mm

0.53 mm

0.69 mm

0.85 mm

#19. When you design a cavity wall, which of the following parameter will NOT affect the lateral support on top of the wall?

Flashing beneath weep holes

Thickness of inner wythe

Spacing of intersecting masonry walls

Thickness of outer wythe

#20. Collar ties may be assumed to provide intermediate support to roof rafters if the roof slope is:

1 in 4 or greater

1 in 4 or less steep

1 in 3 or greater

1 in 3 or less steep

#21. A sheathing membrane that forms part of the second plane of protection for an exterior wall must comply to:

CAN/CGSB-51.32-M

CAN/CGSB-51.33-M89

CAN/CGSB51.34-M86

CGSB 37-GP-56M-1985

#22. In a loadbearing flat ICF wall, a lintel must also be reinforced for shear with stirrups at openings when the opening is:

more than 900 mm in width

more than 900 mm but not more than 1 200 mm in width

more than 900 mm but less than 1 200 mm in width

more than 1 200 mm in width

#23. A home being constructed in Windsor, Ontario has been changed to include an addition of an indoor swimming pool. The wall assemblies of the swimming pool incorporate materials with a water permeance of less than 60 ng/(Pa×s×m²). High moisture generation will occur and therefore the wall assemblies;?

Are sufficient if all penetrations are sealed,

Shall be designed according to Part 5

Are insufficient and are required to be designed by a qualified person

Must be thermally insulated to Table 2.1.1.2.A.

#24. Consider a dwelling unit where a guard is installed while it is not required by Article 9.8.8.1. The openings through the said guard, which is not required by Article 9.8.8.1., must be of a size that will:

prevent the passage of a spherical object having a diameter of 100 mm

permit the passage of a spherical object having a diameter of 200 mm

prevent the passage of a spherical object having a diameter of 100 mm and permit the passage of a spherical object having a diameter of 200 mm

prevent the passage of a spherical object having a diameter of 100 mm or permit the passage of a spherical object having a diameter of 200 mm

#25. If a streel column that is required to have a fire-resistance rating of not less than 2h. (member demotion: B=164mm. H = 258 mm, mass = 32.8kg/m) Using Section 2.6.1 of Supplementary Standard SB-2, the minimum thickness of type X gypsum wallboard protected protection to be:

63.5mm

50.8mm

47.6mm

44.5mm

#26. Vertically applied metal siding may only be fastened:

through 14.3 mm thick lumber

to framing or furring members or to blocking between studs

through 12.5 mm thick plywood, OSB or waferboard

through 14.3 mm thick lumber or 9.5 mm thick plywood, OSB or waferboard

#27. A required smoke alarm in a dwelling unit must be installed:

at or near the ceiling

at or near the ceiling and in accordance with the manufacturer’s instructions

in accordance with UL 2034

on any floor level provided it is audible within the bedrooms when the intervening doors are closed.

#28. Which one of the following is not an acceptable method for supporting an assembly which required to have a fire-resistance ratings of not less than 45min?

1 h rated loadbearing steel stud wall

2 h rated poured concrete wall

30 rated wood stud wall

1.0hr protected wood beams and columns

#29. A window is located in an exterior wall of a building adjacent to an enclosed exit stair which also has windows in its exterior wall at every landing level. This particular window is 2 500 mm above the landing and 2 500 mm away from the stair;

this window must be protected with wired glass in fixed steel frames or glass block

the window in the stair wall must be protected with wired glass in fixed steel frames or glass block

either window must be protected with wired glass in fixed steel frames or glass block

no window protection is required

#30. Wall assembly, with wood studs @ 406 mm o/c in a single row, using two layers of 15.9 mm Type X gypsum board on each side, with the loadbearing wall FRR 1.5h, nonloadbearing wall FRR 2h. STC 38. The proper wall number in SB-3 is:

W2a

W15b

W10b

W8a

#31. The maximum force permitted to open an interior exit door in a Barrier-Free path of travel is;

90 N

45 N

38 N

22 N

#32. A guard is required to be installed in a motel to protect guests on second floor. What is the required specified load?

0.75 KN/m design load and a concentrated design oad of 1. 0 KN applied at any point

no load inwards, only outwards

0.75 KN/m specified load or a concentrated specified load of 1.0 KN applied at any point

concentrated specified load of 0.5 KN applied at any point on individual elements

#33. The minimum average level of illumination ina Barrier-Free path of travel is set at:

2 Ix measured at floor level

100 Ix measured at floor level

50 Ix measured at 1200 m above the finished floor level

50 Ix measured at the finished floor level

#34. A barn is being designed which will fall within the area limitations of Part 9. The structural members for this building must be designed

under Part 4

under Div. A, 1.3.1.2

using the tables found in Part 9

by a professional engineer and/or architect.

#35. The rear sliding door in a house on the main floor level, the finished floor on one side of the floor is 750mm above the out side ground level on the other side of the sliding door, the door shall be:

Protected by a mechanism capable of controlling the sliding door so as to limit any clear unobstructed opening to not more than 100 mm

The door must be blocked

Protected by closure

Protected by a shutter capable of controlling the sliding door so as to limit any clear unobstructed opening to not more than 100 mm

#36. In an open floor area, the travel distance to an exit is measured:

from one exit facility to another exit facility

from any point in the floor area in a straight line

from any point in the floor area along the path of exit travel

one-half the maximum distance from one exit to another exit

#37. 1. A summer cottage will be located in Bancroft, Ontario. The long dimension of low permeable 12.5 mm thick wall sheathing will be applied perpendicular to the wall framing. What installation requirement will insure venting of the framing space and exemption from the requirements of Sentence 9.25.5.1.(1)?

A 2 mm gap between installed sheets

A 1/16 in gap between installed sheets

A 2 mm overlap of installed sheets

A 0.2 mm gap between installed sheets

#38. Where the exterior walls of an exit intersect the exterior walls of a building wired glass in steel frames or glass block is required for either the building windows or the exit enclosure windows, where the walls meet at an angle

A more than 135"and the openings are within 3000 mm horizontally

Less than 135"and the openings are more than 3000 mm horizontally

Of 135"and the openings are within 3000 mm horizontally

Less than 135 and the openings are within 3000 mm horizontally

#39. What is the minimum required number of water closets for a group F, Division 2 occupancy located in a one (1) storey, 600m2 building. The Group F, Division 2 occupancy is located in a suite that is 400m2 in area with occupant load of 18 persons in the suite.

One water closet for each sex

One water closet to serve both sexes

Two water closets to serve both sexes

Two water closets to each sex

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

3/ sex

4 / sex

2 / sex

no washrooms are required.

#41. A Barrier-Free corridor is less than 1 600 mm wide throughout it's length, then widened areas must be provided every 30 m max. These widened areas are;

1600 wide by 1600 long

1 060 wide by 1600 long

1 600 wide by 1060 long

1 800 wide by 1800 long

#42. The minimum length of nails used to fasten 7.9 mm thick wood strip flooring is;

83 mm

50 mm

38 mm

22 mm

#43. What is the maximum number of dwelling units permitted within a self-service storage building?

one

two

not permitted

unlimited as long as the building is designed for the two major occupancies.

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

800 mm

965 mm

1 070 mm

1 100 mm

#45. Plywood roof sheathing on a 45 degree peak roof with rafters are spaces at 610 mm o.c., the minimum thickness of roof sheathing to be:

7.5 mm when fastened to the roof rafters

9.5 mm when edges are supported

7.5 mm when edges are supported

9.5 mm when tongue-and-grooved edged plywood is used

#46. Automatic hand dryers for a lavatory in a Barrier-Free washroom are to be located;

between 900 mm and 1200 mm above the floor

not more than 1 200 mm above the floor

not more than 1 000 mm above the floor

not more than 1 500 mm above the floor

#47. An enclosure used for the storage or parking of motor vehicles is considered a carport if it has

a roof and the perimeter is more than 60% enclosed

not less than 40% of the perimeter open

has less than 40% of the perimeter open

a roof and less than 40% of the perimeter open

#48. In a House the maximum temperature for hot water supply to fixtures other than dishwashers and clothes washers is

49°C

55°C

61°C

follow the manufacture's specification

#49. A window in a waiting area in a third storey doctor's office extends from the finish floor to the finished ceiling. That window must

(a) be protected by guards,

non-openable and designed to resist guard loading,

be suitably marked

is not addressed by the code

#50. A manufactured building falls under the parameters of Section 9.39 if compile with:

the CAN/CSA-Z241 Series-M standard

the CAN/CSA-Z241 Series-M standard and is used as a seasonal recreationally building

the CAN/CSA-Z241 Series-M standard and is used as a seasonal recreationally building and is used for a residential occupancy

Part 4

#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

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

#52. A non sprinklered floor area is divided into 2 zones. The occupancy on the floor area is Group D. What is the maximum travel distance from the most remote point in one zone to the door leading into the other zone?

25 m

40 m

45 m

105 m

#53. A wall in a building of residential occupancy that is located on a property line shall be constructed as a fire wall except:

Where the dwelling units each have a separate mean entrance

Where the dwelling units are sprinklered

Where the property line is between houses or between dwelling units in which three is no dwelling unit above another dwelling unit

Firewalls are required in all cases

#54. The minimum uniformly distributed live load (UDL) for the attic (dry wall ceiling) with access hatch conforming to Subsection 9.19.2. of Division B and having limited accessibility in a House:

1.4 kpa

1.0 kpa

2.4 kpa

0.35 kpa

#55. What is the minimum thickness of plywood subflooring applied over floor joists spaced at 610 mm o.c. when 19 mm thick hardwood strip flooring is applied over the subfloor?

12.5 mm

12.7 mm

15.9 mm

18.5 mm

#56. The suites open into a dead end corridor and have another egress door leading into a exit. What are the specifics for this dead end?

max. length = 6 m, and not more than 4 suites

max. length = 6 m, and not more than 30 people

the dead end corridor may be of any length and may serve any number of persons

max. length = 9 m, and not more than 30 people.

#57. Exterior door assemblies leading to dwelling units from the exterior, an attached garage or other ancillary space or a storage garage need not conform to the “Resistance to Forced Entry” requirements of Articles 9.7.5.2.(3) to 9.7.5.2.(7) provided they conform to:

ASTM F476-84(1996), “Standard Test Methods for Security of Swinging Door Assemblies” with a security level of at least 10 as described in the Annex to the said Standard

CAN/CSA-0132.2-M1997, “Wood Flush Doors’

CAN/CGSB-82.1-M89, “Sliding Doors’

CAN/CGSB-82.5-M88, “Insulated Steel Doors”

#58. Consider a two storey single dwelling unit House. The number of required exits is:

1exit door

1exit door per storey

two exit doors if the travel distance is more than 30 m

unregulated in the case of the detached House

#59. 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 8.81

RSI 2.80

RSI 4.40

RSI 5.46

#60. The stair case connecting ground floor and basement is:

An exit

A public corridor

A part of space belonging to basement fire compartment

A shaft

#61. Except occupancy C, if the combustible content is NOT more than 50kg/m2 or 1200MMJ/m2, this occupancy most likely could be:

Group E occupancy

Group F Division 3 occupancy

Group D occupancy

Group F Division 2

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

low slope asphalt shingles

built-up roofing

cedar shingles or shakes

0.33 mm thick galvanized steel sheets

#63. Plywood sheathing, on a flat roof that will be used as a patio with a waterproof vinyl roof and walking deck membrane system that complies with CAN/CGSB-37.54, “Polyvinyl Chloride Roofing and Waterproofing Membrane”, when the roof joists are spaced at 406 mm o.c. must have a minimum thickness of:

15.9 mm with edges unsupported or supported

15.9 mm with edges supported

15.5 mm with edges supported

15.5 mm with edges unsupported or supported

#64. The minimum diameter for nails used for the attachment of stucco lath is;

2 mm

3.2 mm

4 mm

4.5 mm

#65. Collar ties must be laterally braced at right angle with a 19 mm × 89 mm brace, if they span more than:

1 200 mm

1 830 mm

2 240 mm

2 400 mm

#66. 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?

2 minimum

1

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

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

#67. Where an exit door leading directly to the outside is subject to being obstructed by a parked vehicle or storage because of its location?

A visible sign prohibiting such obstructions shall be temporarily mounted on the either side of the door.

A visible sign prohibiting such obstructions shall be permanently mounted on the exterior side of the door.

A visible sign prohibiting such obstructions shall be temporarily mounted on the exterior side of the door.

A visible sign prohibiting such obstructions shall be permanently mounted on the interior side of the door.

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

at least 3 m

at least 6 m

as required for the means of egress

No requirement as long as the condition is considered afe

#69. 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::

spatial separation

minimum door sizes

minimum window sizes for natural fighting

minimum headroom clearance above stairs.

#70. Consider the storage garage of a HOUSE it is detached from the dwelling unit it serves but attached to another storage garage on the adjacent property, the party wall between each section of the storage garage must be constructed as a fire separation with a fire-resistance of not less than:

30 minutes

45 minutes

1 hour

2 hours and constructed as a firewall

#71. An exit opens directly into a lobby in an apartment building. The floor is unsprinklered, the lobby is enclosed with a fire separation having a 1hourfire resistance rating. The lobby is 1 m above the ground level and the distance of travel from the exits to the outdoors is 15 m and a suite door opens into a vestibule which in turn opens into the lobby

the condition complies with the code requirements

the lobby must be sprinklered

the exit must open into a vestibule which in tum opens into the lobby

a lobby is not permitted serving residential suites

#72. The manufacturing standards of Tempered or Laminated Safety Glass is:

CAN/CGSB-12.1-M

CAN/CGSB-12.3-M

CAN/CGSB-12.10-M

CAN/CGSB-12.11-M

#73. The exit door serving the House

must swing in the direction of exit travel

must swing inward

may swing in the direction of exit travel or inward

must in the direction of exit travel and inward

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