Chapter 11 Flashcards
Which type of arch is seen in exhibition halls
Lamella arch
Which of the following is usually built without ceilings
Industrial building
Which is a thicker wooden roof covering
Shake
Which is frequently provided in buildings with a pitched roof to increase light and ventilation in the attic space
Dormer
Which layer protects the roof from mechanical abrasion
Wear course
Which safety point about roofs is not correct
Roofs are generally stronger than floors because they are typically designed to support heavier live loads
Which part of the bowstring truss is curved
Top chord
What is the simplest pitched roof
Shed
Where is a new ceiling often installed when creating a new interior decor
beneath the old one
What are the structural forces of a dome roof similar to
arch
Where are the main joists of an inverted roof located
at ceiling level
Which type of roof is curved and will not support the weight of fire fighters
Air supported
Which of the following does the vapor barrier reduce the diffusion of the interior moisture into
Insulation layer
What type of roof incorporates a garden space into the design
Green roof
Which type of nails should be used when steel sheeting is used in the roof construction
Steel
Which type of roof covering comes is most commonly 12x36 inches
Asphalt shingles
What type of smoke do asphalt shingles produce under fire conditions
Heavy black
Which part of the box beam renders it susceptible to early failure in a fire
Web portion
Which of the following is a small structure erected on the main roof of a building
Penthouse
Which is required by code in the skylight
Wired glass
Which pitch equals a 45-degree angle
12/12
What height above the floor must be the roof be before code will allow the omission of fire proofing from roof supports
20 feet
Which class of roof covering is effective against a severe fire exposure
Class A
Which roofing material can have a life expectancy of 150 years
Slate
What is the thickest gauge of corrugated steel used as roof decking
12 gauge
Which of the following is not a problem encountered with slate tiles under fire conditions
The tiles are highly combustible and will result in an explosion of the tile
Which direction does a flat roof drainage slope typically run
Front to rear
What basically determines the behavior of the roof supported by an arch
Material the arch is constructed from
What feel will be present before the traditional wood joisted roof fails under fire conditions
Spongy
At what interval is the wood nailing strip placed into the cast in place concrete used as roof decking
3 feet
Which type of rigid roof insulating material is a rigid low-density board of glass fibers and a binder
Glass fiberboard
Which type of load does the rooftop garden represent
Dead
What material is commonly used to construct rafters
Wood
What is a second roof constructed over an existing roof called
rain roof
Where are the test procedures located for the evaluations of fire hazards of roof covering
NFPA 256
Which type of roofing material is used as decorative generally
Thatch
Which type of roof is designed to provide light and ventilation
Monitor
Which of the following is seen as a disadvantage of the wood shake
Easy ignition
What are the standard supports used in shed, gable and hip style roofs
Rafters
How many layers of roofing felt is a common design
four
Which is a commonly seem truss in residential construction
Fink
Which is a commonly used material with single ply membrane roofs
Ethylene propylene diene monomer
How much of the length of the wood shingle is actually exposed to the weather once installed
one third
Which type of roof slopes in two directions with a break in the slope on each side
Gambrel
What provides the water resistant barrier for the roof system
roof covering
What will be the minimum nominal thickness of wood planks used for roof decking
1 inch
Which roof deck material serves as the roof deck and the roof covering
Corrugated steel
Which is typical of lightweight trusses
Monoplane
Which is created using spherical triangulation
Geodesic dome
Which type of roof is seen on large area warehouses and shopping center
flat
Which type of roof design consists of two inclined surfaces that meet at their high side to form a ridge
Gable
On which type of roof would the use of fluid-applied membranes be useful
Dome
What provides the water resistant barrier for the roof system
Roof covering
