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40 Cards in this Set
- Front
- Back
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Plumb cut |
Square cut of the birds mouth |
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What is the horizontal distance measured between birds mouth pump cut of Common rafter directly opposite of each other |
Common rafter line length or building width |
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What runs parallel to the edge of the rafter and through the working point of the bird's mouth |
Working line |
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What two cuts on a rafter are laid out using the body of the framing square |
1- seat cut 2- shorting at the tail for the fascia |
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What is the distance from the top of the wall plate to the working point at the ridge |
Total common rafter line length |
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What is measured from the birds most Plumb cut to the center of the ridge |
Common rafter line length |
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As it applied to rafter layout what is SGF |
Slope Gain Factor, applied to the run |
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Total Line length is measured between what two points |
The rough fascia and the ridge |
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How are short names laid out |
Working point at the centre of the ridge to the outside of the fascia |
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What is a line length of a gable roof ridge |
Building length plus two overhangs |
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What is the cut length of a hip roof Ridge |
Building length minus building width pluss thickness of one common rafter |
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How much is an end common rafter shortened at the ridge |
Half the thickness of a common |
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What kind of shortening is made at the tail of a valley rafter to accommodate the fascia |
Single cheek cut |
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What is added together to calculate the total line length of a common rafter |
Common rafter line length and the rafter tail line length |
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What vertical framing members are notched to support A rafter |
A notched Gable stud |
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If a single top wall plate is used Why must a raptor or trust fall within 50 mm of it Center |
Help with load transfer |
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Dwarf walls extend between what two points |
Ceiling joist and underside of rafters |
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How is a line length calculated for the supporting Valley rafter |
Half the building span x SGF. SGF x by the minor common rafter |
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What is the main difference between calculating the line length of the supporting and the supported Valley rafters |
Supporting rafters- the run of major roof Supported rafters- the run of the minor roof |
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What is the ridge shortening of a hip rafter |
Half the diagonal thickness of a common rafter |
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What is the difference between the valley jack rafter and the cripple valley jack rafter |
Valley jack is a single cheek cut and the cripple valley jack rafter is a double cheek cut |
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How do you calculate the line length of a cripple valley rafter |
Distance of minor ridge x SGF90 |
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What is the difference between a rake rafter and a common rafter |
Rake rafters do not have a birds mouth |
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What is the difference in the shortening between a hip rafter and a supporting valley rafter |
Half the diagonal thickness |
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How is the common difference calculated for a jack rafter |
On centre spacing x SGF90 |
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What are the first framing components to be erected in a gabled roof |
Centre gable stud and the ridge |
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In terms of roof framing, what components are found on a table roof that are not found on a hip roof |
Rake/barge rafter |
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How many sides are found on a mansard roof |
8 |
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What is the difference between a hip roof and a mansard roof |
2 roof slopes |
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What is required for a intersecting roof ridge to match/ intersect that of the major roof |
Increase the slope to make the building the same |
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What would happen if intersecting roof with the same slope as a major roof but different building spans were to have The Ridges aligned |
Soffit would be at different heights |
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What are two circumstances were a bird mouth is altered |
Drop the hip, push the birds mouth back or a double cheek cut |
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Why is the theoretical line length of a valley rafter different than the Plumb cut |
It's to push out and accommodate the double cheek cut |
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On a common rafter what is the shortening at the ridge |
Half the thickness of ridge 10mm |
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On a common rafter what is the shortening at the fascia |
Full thickness of the fascia 38mm |
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End common what is the shortening at the ridge |
Half the thickness of the common |
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End common what is the shortening at the fascia |
Full thickness of the fascia |
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Hip rafter what is the shortening at the fascia |
Full diagonal thickness of the fascia |
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Jack rafter what is the shortening at the hip |
Half diagonal thickness of the hip |
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Jack rafter what is the shortening at the fascia |
Full thickness of the fascia |
