data sheet

Dr. Ranga Swamy Geotechnical Engineering, CED NIT Calicut

FIELD DENSITY BY SAND REPLACEMENT METHOD A. Calibration for Bulk unit weight of Sand

S.No. Observations & calculations Determination No.

1 2 3

Observations

1. Volume of calibrating cylinder, Vc

2. Weight of pouring cylinder filled with sand, W1

3. Weight of pouring cylinder after pouring sand into the calibrating container and cone, W3

4. Mean weight of sand in the cone, W2

Calculations

5. Weight of sand in the calibrating container, Wc = W1-W3-W2

6. Bulk unit weight of sand, cs

c

WV

γ =

B. Dry unit weight of soil


1 2 3

Observations

1. Weight of excavated wet soil from hole, Wews

2. Weight of pouring cylinder filled with sand, W1

3. Weight of pouring cylinder after pouring sand into the hole and cone, W4

Calculations

5. Weight of sand in the hole, Wh = W1-W4-W2

6. Volume of sand in the hole, hh

s

WVγ

=

7. Bulk unit weight of soil, ewsb

h

WV

γ =

8. Water content, w

9. Dry unit weight of soil, 1

bd w

γγ =+


C. Water content by Oven-drying method


1 2 3

Observations

1. Container No.

2. Weight of empty container, W1

3. Weight of container + wet soil, W2

4. Weight of container + dry soil, W3

Calculations

5. Weight of water, Ww= W2-W3

6. Weight of solids, Ws= W3-W1

7. Water content, 100w

s

WwW

= ×

SPECIFIC GRAVITY OF FINE GRAINED SOIL SOLIDS BY THE DENSITY BOTTLE METHOD


1 2 3

Observations

1. Density Bottle No.

2. Weight of empty density bottle, W1

3. Weight of bottle + dry soil, W2

4. Weight of bottle + soil + water, W3

5. Weight of bottle filled with water, W4

6. Test Temperature (T°C)

Calculations

7. ( )

( ) ( )2 1

2 1 3 4

100T C

W WG

W W W W−

= ×− − −

o

8. ( )

( ) ( )2 1

42 1 3 4

100TC

W W GG

W W W W−

= ×− − −

o


GRAIN SIZE ANALYSIS A. Coarse Sieve Analysis

Total weight of dry soil taken for sieve + pipette analysis, W = ______________

S. No. OBSERVATIONS CALCULATIONS

Sieve No. Sieve opening Weight of soil retained

Percentage retained

Cumulative % retained % finer

1 40 2 20 3 10 4 6.3 5 4.75 6 2 7 1 8 0.6 9 0.3 10 0.15 11 0.075 12 pan

B. Fine Sieve Analysis by Pipette method

Weight of dry soil, W′ = Wd =50 gm Effective depth = 10 cm Volume of suspension = 1000 cc

Vol. of pipette = 10 cc Vol. of dispersing agent added = 25 ml Wt. of dispersing agent added = 1 gm

B.

No.

Observations Calculations

Elapsed time, t (sec)

Temp (°C)

Wt. of dish+ dry soil (W1)

Wt. of dish (W2)

Particle size, D (mm) WD N′ N

1 30

2 60

3 120

4 240

5 480

6 900

7 1800

8 3600

9 7200

10 86400

11


LIQUID LIMIT TEST


1 2 3 4 5

Observations

1. No. of blows (N)

2. Container No.

3. Container weight , W1



Calculations

7. Weight of water, Ww = W2 - W3

9. Weight of dry soil, Ws = W3 – W1

8. Water content, 100wl

s

WwW

= ×

9. Flow Index, If

PLASTIC LIMIT TEST


1 2 3 4 Avg.

Observations

1. Container No.

2. Container weight , W1



Calculations

5. Weight of water, Ww = W2 - W3

6. Weight of dry soil, Ws = W3 – W1

7. Water content, 100wp

s

WwW

= ×

8. Plasticity Index, Ip

9. Toughness Index, It

9. Natural water content, wn

10. Consistency Index, Ic


SHRINKAGE LIMIT TEST

S. No. Observations & calculations Determination No.

1 2 3 4 Avg.

Observations

1. Weight of Shrinkage dish

2. Weight of shrinkage dish + wet pat

3. Weight of wet soil pat, W1

4. Weight of dry soil pat, Ws

5. Weight of mercury weighing cup, Wc

6. Wt. of mercury filling the shrinkage dish + mercury weighing cup, W2

Trail -1

Trail -2

Trail -3

Avg.

7. Weight of mercury displaced by pat + mercury weighing cup, W3

Trail -1

Trail -2

Trail -3

Avg.

Calculations

8. Wt. of mercury filling the shrinkage dish, W2-Wc

6. Weight of mercury displaced by pat, W3-Wc

7. Volume of wet soil pat, V1

8. Volume of dry soil pat, V2

9. Shrinkage limit, ws

10. Shrinkage ratio, SR

11. Volumetric shrinkage, VS

Soil Gradation Atterberg Limits, %

ClassificationGravel Sand Silt Clay D50 Cu Cc LL, % PL, % PI


CONSTANT HEAD PERMEABILITY TEST Dimensions of specimen: Length, L =____________ Diameter, D =_________________

Area, A = ________ Volume, V =_____________ Dry density of sample, γd =______

Test temperature, T° C = ________ Weight of sample, W =_____

S. No.

Trail No.

Hydraulic Head, h (cm)

Hydraulic gradient, i

Time (sec)

Quantity of water, Q (cm3)

Avg. Qty. of Q (cm3)

kT° C (cm/sec)

K20° C (cm/sec)

1. 1 2 3

2. 1 2 3

Average:

COMPACTION TEST Mould Dimensions: Diameter, D = _______ Height, H = __________ Volume, V = ______

Weight of the mould and base, W1 = _______

Compaction details: No. of layers, Nl = ______ Blows/Layer, Nb=_____ Hammer weight =___

Hammer drop, h = _____ Specific gravity of solids, G = _____________

A. Unit weight of soil:


1 2 3 4 5

Observations

1. Weight of mould + base plate + compacted soil, W2

Calculations

2. Wt. of compacted soil, W = W2 – W1

3. Bulk unit weight of soil, γb

4. Dry unit weight, γd

5. Void Ratio, e

6. Degree of saturation, S

7. Dry unit weight at 100% saturation

8. Dry unit weight at 80% saturation


B. Water content determination:


1 2 3 4 5

Observations

1. Container No.

2. Weight of empty container, W1



Calculations

5. Weight of water, Ww= W2-W3

6. Weight of solids, Ws= W3-W1

7. Water content, 100w

s

WwW

= ×

data sheet

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