a. When is it necessary to consolidate concrete by vibration in test method C231? Discuss the process  of vibration when placing and consolidating the sample. b. When rodding a layer of concrete in method C138, is it okay to hit the bottom of the measure? If not,  how is it supposed to be done? c. Calculate the yield of concrete if the mass of the batch is 4800 kg and its density is found to be 350  kg/m3.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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a. When is it necessary to consolidate concrete by vibration in test method C231? Discuss the process 
of vibration when placing and consolidating the sample.
b. When rodding a layer of concrete in method C138, is it okay to hit the bottom of the measure? If not, 
how is it supposed to be done?
c. Calculate the yield of concrete if the mass of the batch is 4800 kg and its density is found to be 350 
kg/m3.

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