020202a Framing Systems Flashcards

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1
Q

Name the 5 systems used for wood frame construction.

A
A) Platform Framing
B) Balloon Framing
C) Post and Beam
D) Pole Construction
E) Structural Insulated Panels
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2
Q

What is the distinguishing feature of western platform framing?

A

Floors and walls are constructed separately with the completed floor becoming the working platform.

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3
Q

What acts as firestops in platform framing?

A

Wall Plates

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4
Q

What is the disadvantage of using solid lumber floor joists in platform framing?

A

Shrinkage occurs in the width of the floor joists.

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5
Q

In balloon framing, how high do the wall-studs extend in a two-storey building?

A

Each stud is toenailed to the sill plate and is continuous from the sill plate to the roof rafters.

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6
Q

How are floors supported in balloon framing?

A

The main floor rests on the foundation mud sill. Upper floors are nailed to the side of the studs and rest on a let-in ribbon.

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7
Q

What is a major advantage of balloon framing?

A

Balloon framing has fewer problems associated with shrinkage of the framing lumber.

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8
Q

Why can framing members in post and beam construction be spaced farther apart than in platform or balloon framing?

A

Individually, the larger framing members are able to support greater loads.

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9
Q

Why is thicker roof sheathing required for post and beam construction?

A

Roof beams are spaced farther apart and the thicker sheathing is needed to reduce its deflection.

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10
Q

What is the interior and exterior finish attached to in post and beam construction?

A

Framed stud walls are erected between the posts to provide a means of attachment for the exterior and interior wall finishes.

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11
Q

What function do the poles serve in pole construction?

A

The poles act as a foundation for the building.

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12
Q

Why are structural insulated panels ideally suited for exterior walls?

A

The polyurethane foam core has excellent insulation properties.

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13
Q

What is the maximum allowable moisture content for framing lumber?

A

19 %

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14
Q

In platform systems, which framing member is used to support loads that occur over openings in walls?

A

Lintels

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15
Q

In balloon framing, how are roof and floor loads transferred to the foundation?

A

Roof loads are transferred directly to the foundation by the walls studs. Upper storey floor loads are transferred to the studs by a let-in ribbon. The studs then transfer the loads to the foundation.

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