What is the total rise of a hip rafter compared to a common rafter?

It is the same as that of a common rafter.

It is less than that of a common rafter.

It is more than that of a common rafter.

It is twice that of a common rafter.

What must be found first to determine the length of a hip rafter?

The rise per foot of run of the roof

The length of the common rafter

The total length of the hip rafter

What must be added to the length of the hip rafters to determine their overall length?

The length of the common rafter

When aligning the bird’s mouth seat cut with the top plane of the common rafter, how is the seat cut adjusted?

It is dropped by half the thickness of the rafter

It is extended by the thickness of the rafter

It is dropped by the thickness of the rafter

It is raised by half the thickness of the rafter

Why must the bird’s mouth plumb cut be angled on a valley rafter?

To allow the rafter to drop down into the inside corner of the building

To allow the rafter to extend beyond the building

To support the weight of the roof

To connect the rafter to the ceiling joist

What must be done to the tail end cuts of a valley rafter?

They must be made so that the corner made by the valley lines up with the rest of the roof overhang.

They must be cut at an angle to fit the ridgeboard.

They must be shorter than the common rafter.

They must be reinforced with additional material.

How must the valley rafter be aligned?

Aligned with the plane of the common rafter.

Perpendicular to the common rafter.

At a 45-degree angle to the hip rafter.

What are cheek cuts used for in valley rafters?

To allow them to fit between two ridgeboards.

To attach the valley rafter to the ridgeboard.

To connect the valley rafter to the hip rafter.

To create a decorative edge on the valley rafter.

How does the layout of valley jack rafters differ from that of hip jack rafters?

Valley jack rafters run in the opposite direction, toward the ridge.

Valley jack rafters are shorter.

Valley jack rafters do not require cheek cuts.

Valley jack rafters are installed at a different angle.

What must be done to jack rafters to prevent the hip or valley from bowing?

They must be cut and installed in pairs

They must be installed at a specific angle

They must be reinforced with metal brackets

When laying out additional jack rafters, what must be subtracted to find the common difference?

The length from the last jack rafter laid out

The length of the common rafter

For each jack rafter with a cheek cut on one side, what must be present on the opposite side?

A jack rafter of equal length with the cheek cut

A jack rafter of shorter length

What is the first step in using a Speed Square to establish cuts for a hip or valley rafter?

Place the lumber on a pair of sawhorses with the top edge and crown facing away from you.

Place the square a few inches away from the bottom of the lumber.

Place the lumber on a pair of sawhorses with the top edge and crown facing towards you.

Move the square so that the pivot point and the 4 on the hip valley scale are even with the top edge.

After placing the lumber correctly, where should the Speed Square be placed before drawing the line?

A few inches away from the top of the lumber.

At the pivot point and the 4 on the hip valley scale even with the top edge.

A few inches away from the bottom of the lumber.

Even with the outside edge of the lumber.

When using the Speed Square to draw a line for a hip or valley rafter cut, what should be aligned with the outside edge of the lumber?

The pivot point and the 4 on the hip valley scale.

What is the first step in laying out the length required for the hip rafter according to the instructions?

Measure with a tape measure along the top edge of the rafter and mark the point.

Place the square with the pivot point on the edge of the mark.

Draw a line along the edge of the square.

Move the square until the 4 on the hip valley scale is even with the edge of the lumber.

What should you do after placing the square with the pivot point on the edge of the mark?

Move the square until the 4 on the hip valley scale is even with the edge of the lumber.

Draw a line along the edge of the square to establish the plumb cut.

Measure the length of the rafter again.

Mark another point on the rafter.

What is the purpose of drawing a line along the edge of the square?

To establish the plumb cut of the seat cut (bird’s mouth).

To measure the length of the hip valley scale.

To mark the top edge of the rafter.

When using a Speed Square to obtain a horizontal cut, how should the square be positioned?

With the small line at the pointed end of the square covering the previously drawn line

With the square's right angle placed against the edge of the lumber

With the square's hypotenuse aligned with the edge of the lumber

With the square's top edge aligned with the bottom edge of the lumber

What is the next step after placing the lumber on edge to establish the center of the rafter?

Draw a line on the center of the rafter so that it is over the ridge cut

Measure the width of the rafter and mark the center

Cut along the line previously drawn with the Speed Square

Flip the lumber over and repeat the process on the other side

What should be deducted to find the distance back from the original plumb cut (ridge cut)?

3/4 inch plus the diagonal measure of the ridge

1-1/16 inches plus half the diagonal measure of the ridge

3/4 inch minus half the diagonal measure of the ridge

The diagonal measure of the ridge only

Where should the same angle be drawn on the opposite side of the center line as shown in the image?

On the opposite side of the center line

On the same side as the first angle

On the opposite side of the second line

What is the procedure outlined for making a hip rafter also used for?

Measuring the length of the hip rafter

What are the two alternative methods of cutting the seat cut (bird’s mouth) of the hip rafter?

Cutting the rafter plate at the intersection of two plates or cutting at a double 45-degree angle

Cutting at a single 45-degree angle or using a speed square

Cutting at a 90-degree angle or using a template

Cutting with a handsaw or using a circular saw

What is the method of cutting a valley rafter?

Cutting a reverse 45-degree cut to fit into the intersecting corners

Cutting a straight cut to align with the ridge board

Cutting a bird’s mouth at a single 45-degree angle

Cutting at a 90-degree angle for a snug fit

27112 PPT #7 (CJ & RF) Characteristics of Intersecting Roofs

Authored by Christopher Foy

Specialty

9th Grade

Used 1+ times

27112 PPT #7 (CJ & RF) Characteristics of Intersecting Roofs

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41 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a characteristic of an intersecting roof?

It has a single section that slopes in one direction.

It has two or more sections that slope in the same direction.

It has two or more sections that slope in different directions.

It is flat without any slopes.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which combination is given as an example of an intersecting roof in the learning material?

Mansard and shed combination

Gable and hip combination

Gambrel and flat combination

Saltbox and bonnet combination

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in the procedure for laying out hip and valley sections according to the appendix?

Install the ridgeboards.

Lay out the rafter locations on the top plates.

Cut the common rafters.

Lay out the ceiling joist locations.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the second step in the procedure for laying out hip and valley sections?

Lay out the rafter locations on the top plates.

Install the ridgeboards.

Lay out, cut, and install the common rafters and the ridgeboards.

Measure the length of the hip and valley sections.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a hip rafter?

The horizontal beam that supports the roof

The diagonal of a square formed by the walls and two common rafters

The vertical support in the center of the roof

The outermost rafter on the edge of the roof

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are hip rafters longer than a common rafter?

Because they are made of a different material

Because they are used for aesthetic purposes

Because they travel on a diagonal to reach the ridge

Because they are doubled for extra strength

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit run of a hip rafter?

12 inches

16.97 inches

17 inches

18 inches

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27112 PPT #7 (CJ & RF) Characteristics of Intersecting Roofs

What is a characteristic of an intersecting roof?

Which combination is given as an example of an intersecting roof in the learning material?

What is the first step in the procedure for laying out hip and valley sections according to the appendix?

What is the second step in the procedure for laying out hip and valley sections?

What is a hip rafter?

Why are hip rafters longer than a common rafter?

What is the unit run of a hip rafter?

How many hip rafters are there in every hip section?

For every hip roof of equal pitch, how many inches does the hip rafter run for every foot of run of common rafter?

What is the total rise of a hip rafter compared to a common rafter?

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