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91 Cards in this Set

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  • Back
What type of roof is this?
What type of roof is this?
gable roof
gable roof
What type of roof is this?
What type of roof is this?
gable roof
gable roof
What type of roof is this?
What type of roof is this?
hip roof
hip roof
What type of roof is this?
What type of roof is this?
hip roof
hip roof
What type of roof is this?
What type of roof is this?
intersecting roof
intersecting roof
What type of roof is this?
What type of roof is this?
intersecting roof
intersecting roof
What type of roof is this?
What type of roof is this?
gambrel roof
gambrel roof
What type of roof is this?
What type of roof is this?
gambrel roof
gambrel roof
What type of roof is this?
What type of roof is this?
mansard roof
mansard roof
What type of roof is this?
What type of roof is this?
mansard roof
mansard roof
What type of roof is this?
What type of roof is this?
butterfly roof
butterfly roof
What type of roof is this?
What type of roof is this?
butterfly roof
butterfly roof
What type of roof is this?
What type of roof is this?
shed roof
shed roof
What type of roof is this?
What type of roof is this?
shed roof
shed roof
What is the name of the centre board in this image?
What is the name of the centre board in this image?
the centre board is the ridgeboard
the centre board is the ridgeboard
What is the name of the rafter pictured?
What is the name of the rafter pictured?
common rafter
common rafter
What is the name of this piece in black?
What is the name of this piece in black?
ridgeboard
ridgeboard
What are the pieces in blue called?
What are the pieces in blue called?
common rafters
common rafters
What are the pieces in red called?
What are the pieces in red called?
hip rafters
hip rafters
What are the orange pieces called?
What are the orange pieces called?
valley rafters
valley rafters
What are the purple pieces called?
What are the purple pieces called?
hip jack rafters
hip jack rafters
What are the pieces in yellow called?
What are the pieces in yellow called?
valley jack rafters
valley jack rafters
What are the pieces in green called?
What are the pieces in green called?
cripple jack rafters
cripple jack rafters
What are the pieces in dark gray called?
What are the pieces in dark gray called?
collar ties
collar ties
What are the pieces in light grey called?
What are the pieces in light grey called?
gable end studs
gable end studs
What are the two types of roof framing systems?
1. Truss
2. Hand-cut (a.k.a. rafter)
Which roof system is better overall?
truss
What does calculating the line length tell you?
Where the bird's mouth is located
What are the three methods to measure/determine rafter length?
1. Estimated rafter length
2. Step-off method
3. Calculated rafter length
How does the step-off method work?
The step-off method is based on the unit of run (12 inches for the common rafter). Set the framing square at the proper slope, starting from the plumb cut at the ridge. Then step the rafter down as many times as there are feet in the run.
What is SLOPE?
It is the angle of the roof, given in the form of a unit triangle and a ratio of something to 12.
It is the angle of the roof, given in the form of a unit triangle and a ratio of something to 12.
What is the SPAN?
The span is the width of the building.
The span is the width of the building.
What is the RUN?
The run is half of the span.
The run is half of the span.
What the the LINE LENGTH, and how do you calculate it?
Line length is the length of the rafter from peak to bird's mouth. You calculate it by multiplying the units of run by the L.C.P.F.R.
What is the TAIL LENGTH, and how do you calculate it?
Tail length is the length that the rafter extends beyond the double top plate (i.e., beyond the bird's mouth). You calculate it by multiplying the units of projection by the L.C.P.F.R.
What is TOTAL RAFTER LENGTH, and how do you calculate it?
Total rafter length is the total length of the rafter from peak to the end of the tail. You calculate it by adding together the line length and the tail length.
What reductions need to be taken into consideration when calculating and cutting rafters?
Reduce the peak side of the rafter by 1/2 the width of the ridgeboard and the tail of the rafter by the width of the fascia. Make these deductions at right angles to the plumb lines, NOT along the edge of the board.
When do you mark your reductions?
Mark reductions AFTER drawing all 3 plumb lines.
What is another name for "bird's mouth"?
Bird's mouth = seat cut
What is the H.A.P.? What length does it need to be?
H.A.P = Height Above Plate. It needs to be 2/3 the rafter height along the plumb line.
How do you know which direction to draw the bird's mouth?
Beak to the peak!
How do you calculate the number of rafters you'll need?
Width of the roof (in inches) ÷ O/C spacing + 1
What size of ridgeboard should you use?
Ridgeboard must be 1 nominal size larger than the rafters.
How do you know where to place gable end studs?
Gable end studs should line up with O/C studs of your walls.
Why should you be sure to cut the end of the gable end stud at least as low as the rafter?
Shrinking!
What is the name of the pieces of blocking that connect the rake rafter to the next common rafter?
lookouts
What is the first rafter called?
rake
What is another term for H.A.P.?
H.A.P. = rafter stand
What takes the place of rafters in a truss system?
upper chords
What takes the place of ceiling joists in a truss system?
lower chords
What is the name of the diagonal members in a truss system?
webs
Are carpenters allowed to build trusses?
Yes, as long as they use approved designs. Carpenters are NOT allowed to design trusses.
What type of truss is this?
What type of truss is this?
Fink or W truss
Fink or W truss
What type of truss is this?
What type of truss is this?
Modified Fink truss
Modified Fink truss
What type of truss is this?
What type of truss is this?
Howe truss
Howe truss
What type of truss is this?
What type of truss is this?
Pratt truss
Pratt truss
What type of truss is this?
What type of truss is this?
Attic truss
Attic truss
What type of truss is this?
What type of truss is this?
Scissors truss
Scissors truss
What type of truss is this?
What type of truss is this?
Hip carrier truss
Hip carrier truss
What type of truss is this?
What type of truss is this?
Warren truss
Warren truss
What is the most common truss used in residential construction?
Fink (W) truss
Fink (W) truss
How do you install trusses?
According to the provided instructions! They will tell you how to place, brace, etc.
What is a critical step before installing the first truss?
build bracing!
build bracing!
How are trusses typically connected to the plate?
metal framing connectors
How do you determine the method of permanent bracing of trusses?
Bracing design is created by the truss engineer and provided on the plans.
How should truss chords be cut to install skylights, etc.?
Truss chords should never be cut!
What are two important purposes of roof sheathing?
1. Provide rigidity to roof frame
2. Provide nailing base for roof covering.
For roof sheathing, should the grain run parallel or perpendicular to rafters or top chords?
Perpendicular
What type of sheathing is typically used in post-and-beam framing?
plank decking (minimum 2" nominal thickness)
What is another name for "tail level line"?
Tail level line = soffit cut
Do you need to have edge support with roof sheathing? If so, what type?
Yes: T&G plywood/OSB, or H-clips (2 between each rafter)
What is the purpose of venting the roof?
To remove hot/cold/damp air from the attic space
What are the two reasons that you vent?
1. Provide comfort level
2. Allow wet air to exit
What type of venting is required on the top of all houses?
One of these:
- Standard roof vent
- Turbine vent
- Ridge vent
What venting is required along the eaves?
Soffit vent
What venting is required along the inside of the roof?
Posi-vent (a.k.a. Positive ventilation chute)
When would you use a gable end vent?
With a gable roof, especially if house was oriented so that prevailing winds in the area would make good use of it.
What are the 6 different types of house venting we should know about?
1. Standard roof vent
2. Turbine vent (wind-operated or electric)
3. Soffit vent
4. Posi-vent / Duro-vent / positive ventilation chute
5. gable end vent
6. ridge vent
What 3 vents are required on all houses?
1. standard and/or turbine and/or ridge vent
2. soffit vent
3. posi-vent
What are 6 signs of poor venting?
1. mould (shows up last)
2. heat
3. stale air
4. breakdown of shingles
5. sheathing decays
6. rot
How much venting is required?
1 sq ft of vent for every 300 sq ft of insulated ceiling
What are 6 styles of shingles, and which is most common?
1. asphalt (most common)
2. cedar (shakes or shingles)
3. slate
4. clay
5. flat (tar and gravel)
6. metal
What are the 6 components of finishing a roof?
- Roof deck
- Underlayment
- Drip edge
- Starter strip
- First course of shingles
- Next courses of shingles
What part of the roof is shown here?
What part of the roof is shown here?
roof deck
roof deck
What is this?
What is this?
underlayment
underlayment
What is this?
What is this?
drip edge
drip edge
How far up the roof do you need eaves protection?
900mm, and 300mm in from double top plate
What underlayment does Lawrence use along the bottom of the roof?
ice and water
What underlayment, at minimum, should be used for the rest of the roof?
15 lb tar paper
What is shown here?
What is shown here?
starter strip
starter strip
What is this person installing?
What is this person installing?
first course of shingles
first course of shingles