Test: Prestressed Concrete - 2 - Civil Engineering (CE) MCQ

# Test: Prestressed Concrete - 2 - Civil Engineering (CE) MCQ

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## 10 Questions MCQ Test - Test: Prestressed Concrete - 2

Test: Prestressed Concrete - 2 for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Test: Prestressed Concrete - 2 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Prestressed Concrete - 2 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Prestressed Concrete - 2 below.
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Test: Prestressed Concrete - 2 - Question 1

### High strength steel used in prestressed concrete can take how much maximum strain?

Test: Prestressed Concrete - 2 - Question 2

### For a rectangular prestressed beam designed for operating stress conditions, what is the maximum prestressing force?

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Test: Prestressed Concrete - 2 - Question 3

### If a simply supported concrete beam, prestressed with a force of 2500 kN, is designed by load balancing concept for an effective span of 10 m and to carry a total load Of 40 kN/m, the central dip of the cable profile should be

Detailed Solution for Test: Prestressed Concrete - 2 - Question 3

Let the dip of the cable be h.
Upward pressure provided by the parabolic cable = 8Ph/L2
8Ph/L2 = w
⇒  = 40  ⇒ h = 0.2 m
⇒ h = 200 mm

Test: Prestressed Concrete - 2 - Question 4

A prestressed concrete beam has a cross- section with the following properties:
A = 46,400 mm2, I = 75.8 x 107 mm4,
ybottom = 244 mm, ytop = 156 mm.
It is subjected to a prestressing force at an eccentricity ‘e’ so as to have a zero stress at the top fibre. The value of ‘e’ is given by

Detailed Solution for Test: Prestressed Concrete - 2 - Question 4

For zero stress at top fibre,
P/A = Pe/Z
⇒
⇒

Test: Prestressed Concrete - 2 - Question 5

in pre-stressed concrete

Test: Prestressed Concrete - 2 - Question 6

The purpose of reinforcement in pre-stressed concrete is

Test: Prestressed Concrete - 2 - Question 7

Prestress loss due to friction occurs

Test: Prestressed Concrete - 2 - Question 8

The coefficient of shrinkage for high grade concrete for pre-tensioned work is

Test: Prestressed Concrete - 2 - Question 9

If 'P' is the prestressing force applied at a maximum eccentricity 'g' at mid-span, figure, to balance the concentrated load 'W', the balancing load will be

Test: Prestressed Concrete - 2 - Question 10

Consider the following factors
1. initial prestress
2. losses in prestress
3. depth of cable from extreme compression fibre
Those which affect the ultimate moment capacity of a prestressed concrete beam would include

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