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WorksheetsSTRUCTURAL CONCEPTUALIZATION - M-02 - 06
Total questions: 20
Worksheet time: 10mins
the basic principle of pre-stressing was applied to construction centuries ago; when bands were tightened, they were under tensile pre-stress which in turn created compressive pre-stress between the staves and thus enable them to resist hoop tension produced by the internal liquid pressure
Wooden Staves
P.H. Jackson
C.E.W. Doehring
C.R. Steiner
None of the Above
in 1886, an engineer in San Francisco, California obtained patents for tightening steel tie rods in artificial and concrete arches to serve as floor slabs
Wooden Staves
P.H. Jackson
C.E.W. Doehring
C.R. Steiner
None of the Above
In 1888, independently secured patent for concrete reinforced with metal that tensile stress applied to it before the slab was loaded
Wooden Staves
P.H. Jackson
C.E.W. Doehring
C.R. Steiner
None of the Above
In 1908, suggested the possibility of retightening the reinforcing rods after some shrinkage and creep of concrete had taken place in order to recover some losses
Wooden Staves
P.H. Jackson
C.E.W. Doehring
C.R. Steiner
None of the Above
In 1925, tried high-strength steel bars coated to prevent bond with concrete; after the concrete had set, the steel bars were tensioned and anchored to the concrete by means of nut
R.E. Dill
E. Freyssinet
C.E.W. Doehring
C.R. Steiner
None of the Above
Modern Development of pre-stressed concrete credited to him, who in 1921 started using high-strength steel wires for pre-stressing
R.E. Dill
E. Freyssinet
C.E.W. Doehring
C.R. Steiner
None of the Above
concrete which there have been introduced internal stresses of such magnitude and distribution that the stresses resulting from given external loading are counteracted to a desired degree.
Reinforced Concrete
Pre-Stressed Concrete
High Stress Concrete
Compressive Concrete
None of the Above
the pre-stress is commonly introduced by tensioning the steel reinforcement
Reinforced Concrete
Pre-Stressed Concrete
High Stress Concrete
Compressive Concrete
None of the Above
credited to E. Freyssinet pre-stressed concrete as essentially concrete which is transformed from a brittle material into an elastic one by pre-compression given to it
Prestressing for combination of High-Strength Steel with Concrete
Prestressing as a design option
Prestressing to transform concrete into an Elastic Material
Prestressing to achieve load balancing
None of the Above
the concept is to consider pre-stressed concrete as a combination of steel and concrete, similar to reinforced concrete, with steel taking tension and concrete taking compression so that the two materials form a resisting couple against the external moment
Prestressing for combination of High-Strength Steel with Concrete
Prestressing as a design option
Prestressing to transform concrete into an Elastic Material
Prestressing to achieve load balancing
None of the Above
the concept is to visualize pre-stressing as an attempt to balance the loads of a member
Prestressing for combination of High-Strength Steel with Concrete
Prestressing as a design option
Prestressing to transform concrete into an Elastic Material
Prestressing to achieve load balancing
None of the Above
Which is NOT an advantage of pre-stressing as a design option?
improved service load behavior
efficient use of high strength steel and concrete
smaller span structures; more slender structures
improved fatigued resistance
None of the Above
Which is NOT a disadvantage of pre-stressing as a design option?
improper use of high pre-stress at large eccentricity can produce an excessive and unacceptable upward camber
requires adequate knowledge in handling and detailing
requires precise construction operations which in turn require the services of skilled labor, special equipment and high-quality materials
All of the Above
None of the Above
Which is NOT a type/method of Pre-stressing Concrete?
Pre-tensioning/ Post-tensioning
Linear/ Circular
Bonded/ Unbonded
Vertical/ Horizontal
None of the Above
Which is NOT a system of Pre-stressing Concrete?
AMSYSCO
BBR
Dywidag
Daikon
None of the Above
ASTM for Uncoated Seven-Wise Steel Strad for Pre-stressed Concrete Grade 250 and Grade 270
ASTM A416/416M
ASTM 421/421M
ASTM 322
ASTM A29
None of the Above
ASTM for Uncoated Stress-Relieve Steel Wire for Prestressed Concrete
ASTM A416/416M
ASTM 421/421M
ASTM 322
ASTM A29
None of the Above
ASTM for High Strength Allow Steel Bars
ASTM A416/416M
ASTM 421/421M
ASTM 322
ASTM A29
None of the Above
ASTM for High Strength Carbon and allow Hot Wrought and Cold Finished
ASTM A416/416M
ASTM 421/421M
ASTM 322
ASTM A29
None of the Above
BEAM-COLUMN JOINTS: forces in longitudinal beam reinforcement at the joint face shall be determined by assuming that the stress in the flexural tensile reinforcement is _____
1.0 fy
1.25 fy
1.90 fy
1.50 fy
None of the Above
