Wood Framing Systems Quiz
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Questions and Answers

What is a primary characteristic of balloon framing?

  • It is constructed with closely spaced vertical wood members called studs. (correct)
  • It uses thick, widely spaced vertical wood members.
  • It incorporates a single continuous floor system.
  • It consists of solid, heavy-load bearing materials.

    • Which of the following components is primarily responsible for providing bearing support between the concrete foundation and the wood frame?

  • Cantilevered Joists
  • Rim Joists
  • Tail Joists
  • Sill Plate (correct)

    • What characterizes the rigidity of a truss compared to a beam?

  • A truss can accommodate larger spans than a beam.
  • A truss is made of materials that are lighter than those of a beam.
  • A truss is more rigid than a beam with the same amount of material. (correct)
  • A truss is less rigid than a beam with the same amount of material.

    • What is the purpose of bridging, strapping, and blocking in floor framing?

    <p>To allow for larger span lengths of the floor joists. (A)</p> Signup and view all the answers

    Which of the following options is NOT a type of load in wood frame systems?

    <p>Dynamic Loads (A)</p> Signup and view all the answers

    Which factor does NOT typically influence floor performance?

    <p>Paint color of walls (A)</p> Signup and view all the answers

    What is the primary function of subfloors in wood frame systems?

    <p>To provide structural support and transfer loads. (A)</p> Signup and view all the answers

    What type of wall is referred to as non-loadbearing?

    <p>Internal partitions that do not support loads. (D)</p> Signup and view all the answers

    What defines cantilevered floors in framing systems?

    <p>Floor joists that extend beyond their support. (A)</p> Signup and view all the answers

    What is a significant advantage of platform framing over balloon framing?

    <p>It simplifies the construction of load-bearing walls. (B)</p> Signup and view all the answers

    I-joists are characterized as what type of floor joists?

    <p>Pre-engineered floor joists. (D)</p> Signup and view all the answers

    What is the role of tail joists in a floor framing system?

    <p>To end at a header rather than being continuous. (B)</p> Signup and view all the answers

    Which type of load is typically constant and does not change over time?

    <p>Dead Loads (D)</p> Signup and view all the answers

    What materials can be used for subfloors in floor framing systems?

    <p>Plywood, OSB, or similar materials. (B)</p> Signup and view all the answers

    What is a common building material used for subfloors?

    <p>Plywood (B)</p> Signup and view all the answers

    Which type of truss is described as having members that form interconnected triangular forms?

    <p>Parallel chord truss (A)</p> Signup and view all the answers

    What is the main function of ceiling joists in a roof system supported by a structural ridge beam?

    <p>To absorb lateral thrust (C)</p> Signup and view all the answers

    Which table should be referenced for sizing ceiling joists?

    <p>Table A-3 (B)</p> Signup and view all the answers

    What is a key advantage of using prefabricated wood trusses in construction?

    <p>They reduce on-site labor and are suitable for adverse weather (D)</p> Signup and view all the answers

    How should wood trusses be handled during hoisting?

    <p>They should be carefully handled to prevent nailing plate damage (D)</p> Signup and view all the answers

    What design is characterized by gable end trusses sitting on the end walls and carrying roof loads?

    <p>Gable roof truss system (C)</p> Signup and view all the answers

    What must be accounted for when sizing roof joists according to the content?

    <p>Snow loads only (C)</p> Signup and view all the answers

    Which of the following roof systems does not require ceiling joists to absorb lateral thrust?

    <p>Vaulted or cathedral ceiling (B)</p> Signup and view all the answers

    Which of the following best describes a girder truss?

    <p>It carries a higher load than other trusses in the same construction (A)</p> Signup and view all the answers

    What does the nominal span typically indicate in the design process?

    <p>The overall width or dimension from face to face of supports (A)</p> Signup and view all the answers

    What is the primary factor in determining the size of a beam?

    <p>The distance between beam supports and the floor load (D)</p> Signup and view all the answers

    What is the definition of an actual span?

    <p>The span from the face of one support to the face of another support (C)</p> Signup and view all the answers

    What is the purpose of guards in building design?

    <p>To prevent accidental falls at various openings or edges (B)</p> Signup and view all the answers

    Which of the following is NOT a consideration outlined in the Ontario Building Code for stair design?

    <p>Weighing aesthetics against load capacity (A)</p> Signup and view all the answers

    In the Ontario Building Code, what does Section 9.8 primarily address?

    <p>Stairs, ramps, handrails, and guards (D)</p> Signup and view all the answers

    What information does the height over stairs provide?

    <p>The vertical clear space above the stairs (B)</p> Signup and view all the answers

    Which of the following is used to determine the minimum depth of floor joists?

    <p>The actual span between supports (C)</p> Signup and view all the answers

    Flashcards

    Vaulted Ceiling

    A roof system where rafters are supported by a structural ridge beam, eliminating the need for ceiling joists to absorb lateral thrust.

    Ceiling Joist Sizing

    Use Table A-3 to determine the appropriate size for ceiling joists based on span and load.

    Roof Rafter Sizing

    Use Tables A-6 and A-7 to determine the appropriate size for roof rafters based on span, load, and snow load.

    Roof Truss Prefabrication

    Pre-engineered wood trusses, made of thin 2x members and connected with nailing plates, are commonly used for large roof spans, providing faster construction and cost-effectiveness.

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    Girder Truss

    A type of truss designed to span the roof and carry heavier loads than other trusses in the same structure.

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    Gable Roof Truss System

    The simplest roof truss system featuring gable end trusses at both ends supporting the roof load directly into the walls and common trusses in between.

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    Truss Uplift

    A potential problem with trusses where they tend to move upward, impacting ceiling finishes. Addressing this issue through flexible ceiling finishes is essential.

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    OBC References for Roofing

    Consult sections 9.23.13 (Roof and Ceiling Framing) and 9.23.15 (Roof Sheathing) in the OBC for guidelines and regulations.

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    Balloon Framing

    An older wood frame construction method using continuous studs from foundation to roof, with floor systems built as platforms.

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    Platform Framing

    A more modern wood frame construction method using platforms (floors) to create load-bearing walls for each level.

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    Sill Plate

    The transition piece between the concrete foundation and the wood frame above, providing bearing support and anchorage.

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    Joist Depth

    The vertical dimension of a floor joist, influencing its strength and load-bearing capacity.

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    Joist Spacing

    The distance between floor joists, affecting their spacing and overall structural integrity.

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    Tail Joists

    Floor joists that end at a header, creating a discontinuity in the floor system.

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    Cantilevered Floors

    Floor joists extending beyond their support, allowing for overhangs or balconies.

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    Bridging, Strapping, Blocking

    Framing members added to floor joists to distribute load, increase span, and prevent twisting.

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    I-Joists

    Pre-engineered floor joists made of wood, wood products, or metals with a high strength-to-weight ratio. They offer dimensional stability, stiffness, and strength, allowing for large openings and long spans.

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    Light Frame Wood Trusses

    Prefabricated structural frames made of individual members joined together to form triangular shapes, creating a rigid structure that resists distortion under load.

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    Composite Trusses

    Trusses designed for larger spans and lighter weight. They can accommodate mechanical systems and provide flexibility in design.

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    Loadbearing Walls

    Walls supporting floor and/or roof loads, either internal or external.

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    Non-loadbearing Walls

    Room partitions that do not support structural loads, typically interior walls.

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    Live Loads

    Loads that change over time, such as people, furniture, and weather conditions.

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    Dead Loads

    Loads that remain relatively constant, such as the weight of the building itself and permanent fixtures.

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    Floor Sheathing

    A structural panel product that provides a bearing surface for the floor and transfers loads to the joists.

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    Nominal Span

    The overall width of a building or the dimension from the outside face to the center of an interior support. It's a general estimate used early in design.

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    Actual Span

    The exact distance between two supports, measured from face to face. This precise dimension is used to determine the minimum depth of floor joists or beams.

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    Beam Size Factors

    The size of a beam is determined by two main things: the weight it carries and the distance between its supports (the actual span).

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    OBC References

    The Ontario Building Code provides specific guidelines and regulations for structural components, including beam sizing and stair construction.

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    Stair Width

    The minimum width of a staircase, as defined by the Ontario Building Code (OBC), ensures safe and comfortable passage.

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    Stair Treads and Risers

    The horizontal part of a step is the tread, the vertical is the riser. The OBC has specific requirements for their size and uniformity.

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    Stair Configurations

    The Ontario Building Code (OBC) allows for different types of staircase layouts: rectangular treads, angled treads, or winders (curved steps).

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    Guards

    Protective barriers installed around openings or at the sides of stairs to prevent falls. The OBC defines their requirements and placement.

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    Study Notes

    Module 6

    • Types & Terminology: Covers terminology related to roofs, including slopes, framing elements (ceiling joists, rafters, intermediate supports), and specific roof types (trusses, rakes, lookouts, flat roofs, sheathing, eaves, soffits, fascias, and chimneys).
    • Roof Framing: Discusses ceiling joists, rafters, intermediate supports, sizing calculations, roof trusses, terminology and framing methods (conventional dimensional wood/stick framing, and pre-engineered framing)
    • Roof Slopes: Explains roof pitch, expressed as rise/span, and conversion to degrees. Provides a table showing pitch calculations.
    • Roof Framing-Hip & Valley Rafters: Describes the minimum depth and thickness requirements of hip and valley rafters relative to common rafters.
    • Roof Rafters: Outlines situations where rafters require support from a ridge beam, specifying this as a vaulted or cathedral ceiling method.
    • Roof Framing - End Bearing: States minimum length requirements for end bearing of joists and rafters.
    • Intermediate Support: Explains roof support systems, including common rafters, collar ties. This may also address considerations for dwarf/knee walls and struts.
    • Roof and Ceiling Framing - Openings: Discusses how to frame around openings larger than two joist or rafter spans. This describes adding supports on both sides of the openings.
    • Roof Framing Sizing Ceiling Joists & Roof Rafters: Details steps for determining the sizes of ceiling joists and roof rafters. This emphasizes the importance of using tables for calculations, along with considering snow loads.
    • Roof Framing - Sizing Roof Joists: Outlines the process for sizing roof joists based on span, and the need to consider snow loads.

    Module 7

    • Floor Framing Systems: Covers different systems like balloon framing and platform framing, and their anchor systems focusing on major components like headers, rim joists, headers, trimmers, tail joists, and cantilevered floors.
    • Wood Frame Systems - Evolution: Discusses historical development and adaptation of light frame construction to various innovations (insulation, electricity, etc.). Highlights the efficiency and adaptability of wood framing systems
    • Wood Frame Systems - Platform Framing vs Balloon Framing: Explains the differences between these two wood framing systems, noting that balloon framing is a heavy-load construction using closely spaced vertical members.
    • Anchorage Systems: Explaining the function and importance of sill plates (mud sills), including providing bearing support, a level surface for wood framing and anchoring to the structure itself.
    • Wood Sill Plate: States the need for sill gasket and 1/2" diameter anchor bolt installations.
    • Fitting Sills to the Foundation: Explains the importance of filling gaps and providing proper support.

    Module 8

    • Spans: Describes two types of spans: nominal and actual span. Nominal span is the overall building dimension, while actual span is the distance between support points.
    • Beams: Details how to calculate beam size for consideration of load and support distance. Explains different beam types such as steel beams, wood beams, and beam pockets.
    • Additional Beam Types: This module outlines different types of beams commonly used in construction. Different types of lumber are considered (Parallam, PSL, Laminated Veneer... etc.).

    Module 9

    • Stairs: Discusses stair construction, component terminologies, various stair layouts, and fire-rated stair considerations.

    Module 10

    • Steps to Calculate Rise and Run: Provides the steps for calculating the total rise, number of risers, riser height, and total run of a staircase, considering OBC requirements.
    • The Total Rise: Describes how to calculate the total height from one floor to another (using floor heights to determine overall height)
    • The Number of Risers: Discusses the calculation of the number of risers considering the maximum and minimum rise constraints determined by OBC requirements, and then discusses how to handle non-whole number requirements.
    • Height over stairs: Details the minimum acceptable height for stairs relative to different building types.
    • The Total Run: This explains how to calculate the total run of a stairway and details different factors that may come into play when calculating a total run.
    • Landings: Gives an overview of the criteria for placing landings in stairs, considering OBC requirements and avoiding any obstacles.

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    Related Documents

    Exam Prep Module 6-10 PDF

    Description

    Test your knowledge about wood framing systems, including the characteristics of balloon and platform framing. This quiz covers essential components like subfloors, wall types, and the functions of bridging and blocking in floor framing. Dive into various load types and their impact on performance in building structures.

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