Consider the following statements Proper use of internal vibrators include Vibrators can be used to move concrete horizontally To avoid the internal effects of bleeding, the vibrator should penetrate to the bottom of the layer and at least 150 mm into any previously placed layer The distance between insertions should be about 1 ½ times the effective radius of the vibrator To speed up the compaction, Internal vibrators can touch the reinforcing bars of the element but not the formwork. Of these statements Select one: A. All statements (1-4) are correct B. 2 and 3 are correct C. 2 and 4 are correct D. 1 and 3 are correct
Consider the following statements Proper use of internal vibrators include Vibrators can be used to move concrete horizontally To avoid the internal effects of bleeding, the vibrator should penetrate to the bottom of the layer and at least 150 mm into any previously placed layer The distance between insertions should be about 1 ½ times the effective radius of the vibrator To speed up the compaction, Internal vibrators can touch the reinforcing bars of the element but not the formwork. Of these statements Select one: A. All statements (1-4) are correct B. 2 and 3 are correct C. 2 and 4 are correct D. 1 and 3 are correct
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Consider the following statements
Proper use of internal vibrators include
- Vibrators can be used to move concrete horizontally
- To avoid the internal effects of bleeding, the vibrator should penetrate to the bottom of the layer and at least 150 mm into any previously placed layer
- The distance between insertions should be about 1 ½ times the effective radius of the vibrator
- To speed up the compaction, Internal vibrators can touch the reinforcing bars of the element but not the formwork.
Of these statements
Select one:
A.
All statements (1-4) are correct
B.
2 and 3 are correct
C.
2 and 4 are correct
D.
1 and 3 are correct
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