1. Grain Size Analysis Sieve Analysis
Experiment # 1
Grain Size Analysis
Sieve Analysis

3. * Sizes of solid particles * Their Proportion in the soil mass
Grain Size Analysis
* Sizes of solid particles
* Their Proportion in the soil mass

4. *And between Grave and Sand using Sieve No. 4 Size 4.75mm
According to the ASTM
*Differentiate between coarse and fine using Sieve No. 200 Size mm
*And between Grave and Sand using Sieve No. 4 Size 4.75mm

5. To Determine Grain Size analysis.
OBJECTIVES
To Determine Grain Size analysis.
To classify the soil.

6. Apparatus Set of Sieves Mortar and rubber-tipped pestle.
Riffle box or Splitter
Balance
Brush
Mechanical shaker

7. Sample Preparation Air-dried. Sandy Soil ( Jahra Sand)
Minimum weight of Sample = 110
Used about 500 gm.

8. REQUIRED MEASUREMENTS
1. Weight of each sieve.
2. Total weight of dry soil samples, Ws.
3. Weight of each sieve and retained soil.
4. Weight of oven dried soil passing No. 200 sieve.

9. CALCULATIONS 1. Cumulative weight retained = summation of weight retained on this sieve and the upper sieves 2. Percent retained: Percent passing (or percent finer than): Percent passing = 100  (cumulative percent retained)

10. Sieve No.
Sieve diameter (mm)
Sieve weight (g)
Weight of sieve + soil
(g)
Weight of soil retained (g)
Cumulative soil retained
Cumulative percent retained
Percent passing 4
4.75 10
2.0 20
0.84 40
0.42
100
0.15
200
0.075
pan

11. Grain Size Distribution Curve

12. Two criteria must be applied in making this determination
The first criterion is the coefficient of curvature, Cc:
The second criterion is the coefficient of uniformity, Cu
where, D10 = grain diameter at 10% passing D30 = grain diameter at 30% passing D60 = grain diameter at 60 % passing

13. For a soil to be well graded, the following must be satisfied:
1 < Cc < 3
and
Cu > 4 (for gravel)
Cu > 6 (for sands)
If the soil fails one, or both, of these criteria, it is considered to be poorly graded.
Special cases of poorly graded soils are gap-graded and uniformly graded soils

14. Type Of Compaction Curve

15. Hydrometer Analysis:
To Determine Grain Size Distribution for fine soil