Definitions
Traditional Framed Roof
Cornice/Eave
Roof Slope/Roof Trusses
Roof Ventilation/Ventilation Methods
100
one of the most common roof types in residential construction; constructed with two sloping sides that meet to form a ridge.
What is a gable roof?
100
the distance to be spanned, the spacing of the rafters, and the loads exerted on the roof from dead loads and live loads.
What does the rafter size depend on?
100
Is composed of all the materials used to join the roof and exterior sidewalls.
What is the cornice?
100
The vertical distance.
What is rise?
100
Comes from the inside of the house (bathing, cooking, and cleaning)
What is moisture?
200
common in areas with little rain or snow.
What is a flat roof?
200
extends from the ridge to a wall corner in a hip roof.
What are hip rafters?
200
Protects the walls and openings from weather; controls the amount of natural light that enters
What is the roof overhang?
200
The distance equal to 1/2 of the building span.
What is run?
200
helps cool the attic area of the house in summer; removes moisture that forms in the attic area
What is the purpose of roof ventilation?
300
also called a barn roof.
What is a gambrel roof?
300
typically placed every second or third set of rafters.
What are collar beams?
300
Used with exposed beam construction; Rafter tails are exposed and sometimes tapered or curved for appearance
What is an open cornice?
300
Rise and run.
What is roof slope?
300
A small structure built above the main roof level to provide light and ventilation.
What is a cupola?
400
wall of less than full height.
What is a knee wall?
400
reduces rafter span.
What are knee walls?
400
Forms the eave line; Projects below the soffit to form a drip edge; May be nailed to the lookout
What is a fascia?
400
Able to span long distances without interior load bearing walls or beams.
What are roof trusses?
400
Gable end vents, cupola, ridge vents, and soffit vents.
What are methods of ventilation?
500
covers the rafter end enclosing the overhang.
What is a fascia?
500
extends from the double top plate to either a hip or valley rafter.
What are jack rafters?
500
Can be constructed in a manner similar to the other walls.
What are the gable end overhangs?
500
Horizontal members, known as purlins, are placed perpendicular to the trusses to provide additional stability and nailing surface.
What is a truss assembly?
500
Covered with wire to prevent insects and pests from entering the attic area
What are soffit vents?
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