Concrete Technology and Design of Concrete Structures
Critical section for shear in case of flat slabs is at a distance of

d/2 from periphery of column/capital/ drop panel
at the drop panel of slab
effective depth of slab from periphery of column/drop panel
at the periphery of column

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Concrete Technology and Design of Concrete Structures
Select the incorrect statement...

The loss of prestress is more in pre-tensioning system than in post-tensioning system.
Pretensioning system has greater certainty about its durability.
None of these
For heavy loads and large spans in buildings or bridges, post-tensioning system is cheaper than pretensioning system

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Concrete Technology and Design of Concrete Structures
Examine the following statements :
i) Factor of safety for steel should be based on its yield stress,
ii) Factor of safety for steel should be based on its ultimate stress,
iii) Factor of safety for concrete should be based on its yield stress,
iv) Factor of safety for concrete should be based on its ultimate stress.
The correct statements are

(ii) and (iv)
(i) and (iii)
(i) and (iv)
(ii) and (iii)

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Concrete Technology and Design of Concrete Structures
High carbon content in the steel causes

decrease in both tensile strength and ductility
increase in both tensile strength and ductility
decrease in tensile strength but increase in ductility
increase in tensile strength but decrease in ductility

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Concrete Technology and Design of Concrete Structures
Select the correct statement for

Elastic modulus of high tensile steel is more than that of mild steel
High tensile steel is cheaper than mild steel
Carbon percentage in high carbon steel is less than that in mild steel
Elastic modulus of high tensile steel is nearly the same as that of mild steel

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