Chapter 10 Flashcards
In what shape is a concrete beam most frequently cast
Tee
Which type of reinforcing is provided in addition to steel reinforcing bard to avoid possible buckling of a column
Lateral
What is the nonbearing exterior wall attached to the building with a rigid steel frame called
Curtain wall
What is a ledge that projects from the column and supports the beam
Corbel
Which of the following came make the overhaul operations very uncomfortable
Heat sink effect
What is used to check the moisture content of concrete
Slump test
After what time period is normal design strength of concrete reached
28 days
What effect does the super plasticizer have when added to a concrete mixture
Makes the concrete flow more freely
Which type of stresses are created in the concrete when the steel reinforcement is prestressed
Compressive
Which of the following is not see as an advantage to using precast concrete
The size of what can be precast is unlimited
Which type of force is applied to the reinforcing steel during the posttensioning process
Tensile
Which of the following is an acceptable reason to cut reinforcing steel during fire fighting operations
Rescue trapped victims
What is the primary function of placing reinforcing steel in concrete
Resist tensile forces
What is the fine aggregate used in concrete
Sand
How are the reinforced wall panels constructed in tilt up construction
Onsite in horizontal casting beds
In which application would concrete NOT be reinforced with steel
Sidewalks
Which of the following statement is correct
Prestressed concrete systems may be somewhat more vulnerable to failure than ordinary reinforced concrete
Which type of concrete frame consists of a concrete slab supported by concrete columns
Flat slab concrete frame
In what way is concrete strong
Compression
In the simplest of precast designs, how are the precast slabs connected
Rest on a column
Which of the following provides a thicker slab while eliminating the weight of unnecessary concrete in the bottom half of the slab
Waffle construction
What is the chemical process involved in the hardening of concrete
Hydration
What is excess will result in the concrete spalling on fire conditions
Water
Which comparison statement between structural lightweight concrete and ordinary concrete is not correct
Structural lightweight concrete has a lower density than ordinary concrete
What is the ideal temperature range that concrete should be kept within during curing
50-70 degrees Fahrenheit
10-21 degrees Celsius
Which type of deflection is often seen when the steel strands are released during the pretensioning process
Upward
Which type of concrete slab is used for short spans up to approximately 30 feet
Solid
Which type of frame is good for use in buildings with light floor loads
Slab and Beam framing
What are the stirrups designed to resist in ordinary reinforcing of concrete
Diagonal tension
Which type of assessment must be made and constantly updated as the operation continues
360 degree
