Test 10 Flashcards
What forms if the joints between two pours of concrete is not properly made?
A. Flail joints
B. Split joints
C. Cold joints
D. Hot joints
C. Cold joints
What happens when the concrete fails in steel skeleton construction?
A. It crumbles in place
B. It shifts over
C. It falls down
D. It explodes up
D. It explodes up
What is the slab temporarily connected to when each reaches the designated strength in lift slab construction?
A. Purlins
B. Trusses
C. Beams
D. Columns
D. Columns
What is the framework of most imitation concrete panels made of?
A. Plastic
B. Glass
C. Wood
D. Steel
D. Steel
What is a small device that is designed to keep the rods up off the surface of the form, so concrete will flow underneath the rods?
A. Lifts
B. Chairs
C. Lallies
D. Panels
B. Chairs
Which statement is NOT correct about concrete floors?
A. Cracks may permit the passage of fire from floor to floor
B. Distortion may put door frames out of alignment
C. Concrete swells
D. Concrete floors require expansion joints
C. Concrete swells
What is provided that strengthens the bond between the rod and the concrete in columns?
A. Screws
B. Poke through
C. Ridges
D. Ties
C. Ridges
What is it presumed will act as a barrier to the extension of fire in a fire resistive building?
A. Ceiling
B. Void space
C. Walls
D. Floor
D. Floor
What must be true for reinforced concrete to accomplish the designed function?
A. The concrete must be thinner than the steel
B. The concrete and steel must remain in contact
C. The steel ends must protrude from the concrete
D. The concrete and steel must not touch
B. The concrete and steel must remain in contact
Where does the collapse danger lie with serious fires in fire resistive buildings?
A. Roofing
B. Concrete
C. Steel
D. Contents
B. Concrete
What fraction of the weight by volume of traditional concrete is autoclave aerated concrete?
A. 1/8
B. 1/4
C. 1/2
D. 1/3
B. 1/4
What does the efficiency of fireproofing depend upon first?
A. Building department staff
B. Competence of the subcontractor
C. Adequacy of the materials
D. Diligence of the fire department inspectors
B. Competence of the subcontractor
Where is the load of the cantilevered platform delivered?
A. Floor below
B. Floor above
C. Platform
D. Adjacent wall
B. Floor above
What will occur if a column is lost in a cast in place, monolithic concrete building?
A. building will begin to lean
B. Catastrophic collapse
C. Weight will redistribute
D. Partial collapse
C. Weight will redistribute
What is used to pack the recess provided for the joints in a precast concrete building?
A. Plastic
B. Plaster
C. Mortar
D. Cement
C. Mortar
Which statement is NOT correct about spray on fireproofing?
A. The base steel must be free of oils and rust scales
B. Thickness and density of application is easily monitored
C. Adhesion of the material to the steel is of concern
D. Sprayed on material is often knocked off by other trade members
B. Thickness and density of application is easily monitored
What has made the installation of elevators, even in two story structures (except private R3 residences), a requirement in new construction?
A. OSHA
B. ADA
C. NFPA
D. RDA
B. ADA
At what temperature is there virtually complete loss of prestress?
A. 1,000 degrees Fahrenheit
B. 1,100 degrees Fahrenheit
C. 900 degrees Fahrenheit
D. 800 degrees Fahrenheit
D. 800 degrees Fahrenheit
Which of the following is NOT considered a type of cast in place concrete?
A. Plain concrete
B. Post tensioned concrete
C. Reinforced concrete
D. Pretensioned concrete
D. Pretensioned concrete
What is a short column with a large cross section in proportion to its length called?
A. Pile
B. Ridge
C. Rod
D. Pier
D. Pier
What is produced when concrete cures?
A. Flame
B. Gases
C. Heat
D. Smoke
C. Heat
In which type of concrete does a two way structural system use closely spaced beams set at right angles to one another and unnecessary concrete is formed out?
A. Hollow
B. Waffle
C. Prestressed
D. Stranded
B. Waffle
What material is used in parking garages that can lead to corrosion?
A. Nitrogen
B. Water
C. Salt
D. Aluminum
C. Salt
How much of the cost of a concrete structure can the formwork represent?
A. 30%
B. 60%
C. 40%
D. 50%
B. 60%
Where is concrete eliminated to create hollow tiles?
A. Above the neutral place
B. Below the neutral plane
C. Anywhere is acceptable
D. Within the neutral plane
B. Below the neutral plane
What rating was given to an 8 inch thick autoclaved aerated concrete block wall?
A. 6 hour
B. 3 hour
C. 4 hour
D. 5 hour
C. 4 hour
What causes spalling to occur?
A. Expansion of moisture in the concrete
B. Impregnation with improper fireproofing
C. Removal of heat from the concrete
D. Condensation of water on the surface
A. Expansion of moisture in the concrete
Which tool should be carried with the TI when examining the ceiling void for the unknown source of smoke?
A. Irons
B. Pike pole
C. halligan
D. Axe
B. Pike pole
What are the planks that the shores rest called?
A. Strands
B. Shore planks
C. Tendons
D. Mudsills
D. Mudsills
How is the problem of keeping the column sizes the same despite differing usable area and subsequent greater loads from floor to floor dealt with?
A. increasing the number of concrete columns
B. Increasing the size of the reinforcing steel
C. Increasing the amount of aggregate in the concrete
D. Increasing the size of the concrete columns
B. Increasing the size of the reinforcing steel
What is used near columns to assist in resisting the natural tendency of the floor to shear off at the column?
A. Lally columns
B. Mushroom caps
C. Reinforcing rods
D. Drop panels
D. Drop panels
What does the floor plate rest upon in the flat plate structural system?
A. Columns
B. Purlins
C. Beams
D. Chairs
A. Columns
Where are reinforcing bars placed in the concrete beam to provide needed tensile strength?
A. Top of the beam
B. Throughout the beam
C. Center of the beam
D. Bottom of the beam
D. Bottom of the beam
Which type of fireproofing for concrete protects individual members?
A. Assembly
B. Encasement
C. Membrane
D. Alternating
B. Encasement
What fire resistance rating does the code require for columns on a concrete building?
A. 1 hour
B. 2 hour
C. 4 hour
D. 3 hour
D. 3 hour
Which is considered the best construction type from a fire protection perspective?
A. Fireproof
B. Noncombustible
C. Heavy timber
D. Fire resistive
D. Fire resistive
In which of the following types of buildings is there a monolithic rigid framed building?
A. Cast in place steel building
B. Precast pinned concrete building
C. Cast in place concrete framed building
D. Wooden framed building
C. Cast in place concrete framed building
Which type of construction has the advantage of a lack of inherent voids?
A. Steel
B. Frame
C. Glass
D. Concrete
D. Concrete
Which function of concrete in fire resistive construction is accomplished in proportion to the thickness of the concrete cover?
A. Transferring shear forces to the foundation
B. Conjoining two tilt slab panels
C. Resisting compressive stresses
D. Protecting the tensile strength of steel from fire
D. Protecting the tensile strength of steel from fire
What is almost the only thing that can be done to a building after it is completed that benefits the fire suppression effort?
A. Reinforcement of the steel columns
B. Enclosure of void spaces
C. Installation of automatic sprinklers
D. Addition of a party fire wall
C. Installation of automatic sprinklers
What is used to shape concrete?
A. Formwork
B. Pinning
C. Bracing
D. Shores
A. Formwork
How long did the portion of the roof that collapsed at the military records center fire near St. louis, Missouri in 1973 hold together after the start of the fire?
A. 22 hours
B. 14 hours
C. 37 hours
D. 19 hours
A. 22 hours
Up to what amount of the height from floor to ceiling may consist of in ceiling or under floor voids in the modern office building?
A. 1/8
B. 1/4
C. 1/2
D. 1/3
D. 1/3
What were high rise buildings often fireproofed with until the post world war ll era?
A. Concrete
B. Steel plates
C. Treated plastics
D. Plaster
A. Concrete
What is the setting of concrete dependent upon?
A. Height
B. Aggregate
C. Temperature
D. Vibration
C. Temperature
What was left unprotected when performing encasement, but has been corrected?
A. Top web of beams
B. Non load bearing columns
C. Bottom web of beams
D. Load bearing columns
C. Bottom web of beams
Where does wall formwork go out when it bursts?
A. Top
B. Center
C. Bottom
D. Sides
C. Bottom
What is used to sheathe type l buildings under construction?
A. Plywood
B. Metal
C. Glass
D. Plastic
D. Plastic
What was used to make waffle slab concrete more aesthetically pleasing?
A. Suspended ceiling
B. Concrete skim coat
C. Recessed lighting
D. Complete overhaul
A. Suspended ceiling
What is an early method of encasement?
A. Steel sheeting
B. Sprayed on coating
C. Terra cotta tile
D. Plywood planks
C. Terra cotta tile
