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WorksheetsGrade 12 PWY A Christmas Theory Exam
Total questions: 40
Worksheet time: 20mins
Part A – Multiple Choice (1 mark each) A building section is drawn to show:
The exterior design of the building
The internal construction and vertical relationships of spaces
The roof framing layout
The landscaping plan
Part A – Multiple Choice (1 mark each) A longitudinal section is taken:
Across the narrow width of the building
Along the length of the building
At roof level only
Only through a staircase
Part A – Multiple Choice (1 mark each) A lateral (cross) section cuts through:
The building’s centerline lengthwise
The shorter side or width of the building
The foundation plan
The roof plan
Part A – Multiple Choice (1 mark each) In AutoCAD Architecture, which tool helps create a 2D section directly from a 3D model?
Line tool
Section/Elevation tool
Hatch tool
Trim command
Part A – Multiple Choice (1 mark each) Which of the following should always be labeled on a building section drawing?
Room names only
Furniture and fixtures
Floor levels, ceiling heights, and materials
Site boundary and landscaping
Part B – True or False (1 mark each) Choose True or False: Longitudinal and lateral sections help show hidden structural details.
True
False
Part B – True or False (1 mark each) Choose True or False: Sections are always drawn at a smaller scale than plans and elevations.
True
False
Part B – True or False (1 mark each) Choose True or False: In AutoCAD Architecture, a section line can be inserted in plan view to generate a section view.
True
False
Part B – True or False (1 mark each) Choose True or False: A section should include line weights to distinguish cut elements from background elements.
True
False
Part B – True or False (1 mark each) Choose True or False: The ground line is not necessary when drawing a building section.
True
False
Part A – Multiple Choice (1 mark each). The roof framing plan is drawn to show:
The interior finishes of the roof
The layout of structural members supporting the roof
Trusses
Purlins
Part A – Multiple Choice (1 mark each). The main horizontal structural member that supports common rafters is called the:
Joist
Ridge board
Purlin
Hip rafter
Part A – Multiple Choice (1 mark each). The sloping members that extend from the ridge to the wall plate are known as:
Rafters
Studs
Common rafters
Jack rafters
Part A – Multiple Choice (1 mark each). In a hip roof, the diagonal members that form the external angle where two roof slopes meet are called:
Valley rafters
Hip rafters
Common rafters
Jack rafters
Part A – Multiple Choice (1 mark each). When creating a roof framing plan in AutoCAD Architecture, which feature would best help ensure all rafters are aligned accurately?
Trim command
Snap and Ortho modes
Hatch command
Text tool
Part B – True or False (1 mark each). Jack rafters are shorter rafters that connect the ridge board to the hip or valley rafter.
True
False
Part B – True or False (1 mark each). Roof framing plans are always drawn at a larger scale than floor plans.
True
False
Part B – True or False (1 mark each). The ridge board must be the same thickness as the rafters for proper alignment.
True
False
Part B – True or False (1 mark each). In AutoCAD Architecture, roof elements such as hips, valleys, and ridges can be automatically generated using the Roof Tool.
True
False
Part B – True or False (1 mark each). Overhangs are not shown on a roof framing plan.
True
False
Part C – Short Answer and Practical (2 marks each). Explain the difference between a hip rafter and a valley rafter.
A hip rafter forms the external corner where two roof planes meet; a valley rafter forms the internal corner where two roof planes meet.
A hip rafter supports ceiling joists; a valley rafter supports wall studs.
A hip rafter is horizontal; a valley rafter is vertical.
A hip rafter is only used on gable roofs; a valley rafter is only used on flat roofs.
Part C – Short Answer and Practical (2 marks each). State two key pieces of information that should be labeled on a roof framing plan.
Rafter size and spacing
Roof color and shingle brand
Window schedule and furniture layout
Landscaping details and driveway material
Part C – Short Answer and Practical (2 marks each). In a hip roof, how do jack rafters differ from common rafters in placement and length?
Jack rafters run from the wall plate to a hip or valley and are shorter; common rafters run from the ridge to the wall and are full-length within the span.
Jack rafters are vertical supports under the ridge; common rafters are horizontal beams.
Jack rafters run parallel to the ridge and are longer; common rafters run perpendicular to the ridge and are shorter.
Jack rafters and common rafters are identical in placement and length.
Part C – Short Answer and Practical (2 marks). Why is it important for a drafter to include dimensions and spacing on the roof framing plan?
It ensures accurate construction, correct alignment of members, and reliable material estimation.
It improves the visual appeal of the drawings for presentations.
It replaces the need for structural specifications and engineering review.
It allows interior decorators to choose finishes more easily.
Part A – Multiple Choice (Circle the correct answer) The main purpose of a foundation is to: [1pt]
Decorate the building
Prevent structural settlement or failure
Make walls easier to paint
Provide ventilation
Which material is used as a Visqueen vapour barrier in foundations? [1pt]
Wire mesh
Rebars
Thick plastic sheet
Concrete blocks
Which of the following is a reinforcement material in concrete foundations? [1pt]
Compact fill
Rebars
Pesticide
Bearing surface
A slab foundation is best described as: [1pt]
A flat layer of concrete spread over compacted fill
A column of concrete placed deep in the ground
A wall of blocks above ground
A wood post resting on soil
Which of the following is placed under a concrete slab to prevent moisture from entering the building? [1pt]
Rebars
Bearing surface
Visqueen vapour barrier
Concrete blocks
What is the main purpose of compacted fill in a foundation? [1pt]
To decorate the ground surface
To provide a stable, level base for construction
To strengthen rebars
To prevent insects from entering the building
Which type of foundation uses posts or columns driven deep into the soil to carry heavy loads? [1pt]
Slab foundation
Pile foundation
Masonry foundation
T-foundation
Why is pesticide sometimes applied during foundation construction? [1pt]
To harden the soil
To prevent termites and other pests from damaging the structure
To make the soil waterproof
To speed up concrete curing
Concrete blocks come in different widths. Which of the following widths is NOT commonly available for foundation use? [1pt]
2 in.
4 in.
6 in.
18 in.
Part B – True or False Wire mesh is used to strengthen concrete foundations. [1pt]
True
False
A T-foundation is shaped like the letter T and used to support load-bearing walls. [1pt]
True
False
Masonry foundations are always made of wood. [1pt]
True
False
Part C – Short Answer List two things a foundation helps prevent in a building. [1pt]
Structural settlement and moisture intrusion
Moisture intrusion and wall paint fading
Termite infestation and roof leaks only
Window drafts and paint chipping
Name three components (materials) commonly used in foundation construction. [3pts]
Rebars
Compact fill
Pesticide
Thick plastic sheet (Visqueen vapour barrier)
Decorative paint
Name one type of shallow foundation and one type of deep foundation and give a short description of each. [4pts]
Slab foundation spread over compacted fill; pile foundation with posts driven deep into the soil
T-foundation resting on untreated soil; slab foundation supported by wooden posts
Masonry foundation built of wood; pile foundation made of lightweight foam columns
Slab foundation used only above ground; pier foundation described as a thin plastic sheet under concrete
Part C – Short Answer and Practical (2 marks each). Describe the role of rebar in concrete foundations.
It provides tensile strength to the concrete.
It is used to support insulation materials.
It acts as a decorative element.
It helps in waterproofing the foundation.
