Problem 2: Short Answers True or False: Wet unit weight is better than dry unit

Question

Problem 2: Short Answers True or False: Wet unit weight is better than dry unit weight for assessing the degree of compacted fills In the USCS a soil is classified by a symbol XY. What does X and Y indicate Name two methods to measure unit weight in the field. Name two types of compactors used in the field What are the compaction energy for the Standard Proctor effort: how many lifts, how many blows per layer, size of mold Name two methods used to determine grain size distribution of a soil sample

Explanation / Answer

Answer 1 :

FALSE.   To assess the degree of compaction, it is necessary to use the dry unit weight, which is an indicator of compactness of solid soil particles in a given volume.

Answer 2 :

In USCS classification system X stands for Soil Component , Y stands for Component Characteristics.

Answer 3 :

Methods to measure unit weights in field are

Answer 4 :

Types of compacters used in field

Answer 5 :

Standard proctor

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