Soil Tests: Field density method (sand replacing method) Introduction: Apparatus: Procedure: Calculations:

1. Field Density Method
(Sand Replacing Method)
Presented By:
Faizan Tanoli

2. FieldDensityMethod
Apparatus:
1- Scale.
2- Proctor Mold.
3- Plastic Bottle.
4- Sand Cone.
5- Base Plate.
6- Trowel.
7- Evaporating Dish.

3. FieldDensityMethod
Procedure:
1. First find the weight of empty proctor
mold. (W1- in Kg)
2. Fill the proctor mold with dry sand.
3. Now again weight this proctor mold filled
with sand. . (W2- in Kg)
4. Find the volume of proctor mold. (V1)
For Dry unit weight of sand
W2-W1/V1 (kg/m3)

4. FieldDensityMethod
5. Now install entire assembly of sand cone.
(plastic bottle + sand cone)
6. Fill the bottle with dry sand and weight the
assembly. (W3 - in Kg)
7. Shut the button of cone, invert the cone and open
it release one cone of sand and weight again the
assembly. (W4 – in Kg)
For weight of conefull of sand
W3-W4 (=Wc – in Kg)
Procedure:

5. FieldDensityMethod
Procedure:
8. Out on field screwed the base plate to leveled
area of ground and dig a hole about 10-15cm.
9. Put the digged sand into plastic bag.
10. Put the assembly on base plate and release sand
in dig.
11. Back in the lab and weight the complete
assembly again. (W5 – in Kg)
For Volume of hole
W3-W5-Wc / dry unit weight of sand (=V2 – in
m3)

6. FieldDensityMethod
12.Finally weight evaporating dish. (W6
– in Kg)
13.Put all collected sand into the dish
and weight. (W7 – in Kg)
14.Put the dish in oven and after 24-hrs
weight it again. (W8 – in Kg)
For moist unit weight of the soil
W7-W8 / V2 ( Kg/m3)
Procedure:

7. FieldDensityMethod