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?

To allow for larger span lengths of the floor joists. Signup and view all the answers

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

Dynamic Loads Signup and view all the answers

Which factor does NOT typically influence floor performance?

Paint color of walls Signup and view all the answers

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

To provide structural support and transfer loads. Signup and view all the answers

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

Internal partitions that do not support loads. Signup and view all the answers

What defines cantilevered floors in framing systems?

Floor joists that extend beyond their support. Signup and view all the answers

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

It simplifies the construction of load-bearing walls. Signup and view all the answers

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

Pre-engineered floor joists. Signup and view all the answers

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

To end at a header rather than being continuous. Signup and view all the answers

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

Dead Loads Signup and view all the answers

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

Plywood, OSB, or similar materials. Signup and view all the answers

What is a common building material used for subfloors?

Plywood Signup and view all the answers

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

Parallel chord truss Signup and view all the answers

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

To absorb lateral thrust Signup and view all the answers

Which table should be referenced for sizing ceiling joists?

Table A-3 Signup and view all the answers

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

They reduce on-site labor and are suitable for adverse weather Signup and view all the answers

How should wood trusses be handled during hoisting?

They should be carefully handled to prevent nailing plate damage Signup and view all the answers

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

Gable roof truss system Signup and view all the answers

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

Snow loads only Signup and view all the answers

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

Vaulted or cathedral ceiling Signup and view all the answers

Which of the following best describes a girder truss?

It carries a higher load than other trusses in the same construction Signup and view all the answers

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

The overall width or dimension from face to face of supports Signup and view all the answers

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

The distance between beam supports and the floor load Signup and view all the answers

What is the definition of an actual span?

The span from the face of one support to the face of another support Signup and view all the answers

What is the purpose of guards in building design?

To prevent accidental falls at various openings or edges Signup and view all the answers

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

Weighing aesthetics against load capacity Signup and view all the answers

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

Stairs, ramps, handrails, and guards Signup and view all the answers

What information does the height over stairs provide?

The vertical clear space above the stairs Signup and view all the answers

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

The actual span between supports Signup and view all the answers

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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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.