NO:………………............. Dated: 07/02/05

To………………………………………………..

……………………………………………….

………………………………………………

Sub: Laboratory Test reports for Soil Samples from Independent laboratory for Subgrdae & Core Construction for Upgradaton & Improvement Works of Silchar Dwarbond Gaglacherra Phaisen road under tenth five yr. Plan of NEC sponsored Scheme.(Package –S….)

Dear Sir,

You are requested to get the laboratory tests conducted for the soil samples collected

as listed below from any independent recognized laboratory in order to assess their suitability

for the above said construction.

Please treat it as most urgent.

Tests to be conducted are:a) Sand Content Test/Sieve Analysis [IS 2720(Part-4)]

b) Plasticity Test[IS 2720(Part-5)]

i) Liquid Limit(LL)

ii) Plastic Limit(PL)

iii) Plasticity Index(PI)

c) Proctor Density Tests[IS 2720(Part-7/8)]

d) Moisture Content Test[IS 2720(Part-2)]

e) CBR Test[IS 2720(Part-16)]

The Laboratory Report should include the graph of density plotted against

moisture content, mentioning the maximum dry density, OMC etc.

Yours faithfully,

Assistant Engineer, PWD(R) Hailakandi NEC Subdivision HailakandiCopy to:

1) AEE, PWD(R), Hailakandi NEC Subdivision, Hailakandi for favour of kind information.

Assistant Engineer, PWD(R) Hailakandi NEC Subdivision Hailakandi

To, Dated: 08/02/05

…………………………………..

………………………………….

…………………………………..

Sub: Laboratory tests for Soil Samples

Dear Sir,

You are requested to conduct the tests as mentioned below for soil samples

submitted which is proposed to be used for Subgrdae & Core Construction for Upgradaton &

Improvement Works of Silchar Dwarbond Gaglacherra Phaisen road at location from 41st

KM to 45th KM. These being the direction from the concerned department vide their letter

no. NO: TR1/Soil/S …. Dated: 07/02/05 enclosed for your reference.

Tests to be conducted are:f) Sand Content Test/Sieve Analysis [IS 2720(Part-4)]

g) Plasticity Test[IS 2720(Part-5)]

i) Liquid Limit(LL)

ii) Plastic Limit(PL)

iii) Plasticity Index(PI)

h) Proctor Density Tests[IS 2720(Part-7/8)]

i) Moisture Content Test[IS 2720(Part-2)]

j) CBR Test[IS 2720(Part-16)]

The Laboratory Report should include the graph of density plotted against

moisture content, mentioning the maximum dry density, OMC etc.

Yours faithfully,

Enclosed: Photostat Copy of Deptts. Letter

No:………………............. Dated:

To………………………………………………..

……………………………………………….

………………………………………………

Sub: Laboratory Test report for Soil ,Granular material, River Boulder from Independent laboratory for Construction of Approach 300m on either Side for RCC BR.No1/1 over river Katakhal at Gaglacherra under tenth five yr. Plan of NEC sponsored Scheme.(Package –SB 10)

Dear Sir,

You are requested to get the laboratory tests conducted on the samples of the above

said materials collected which is proposed to be used for the above said Construction as per

the enclosed Annexure from any independent recognized laboratory in order to assess their

suitability for the construction.

Please treat it as most urgent.

Yours faithfully,

Assistant Engineer, PWD(R) Hailakandi NEC Subdivision Hailakandi

Enclosed:

1) Annexure stating List of tests

Copy to: AEE, PWD(R), Hailakandi NEC Subdivision, Hailakandi for favour of kind

information.

Assistant Engineer, PWD(R) Hailakandi NEC Subdivision Hailakandi

To, Dated: ……………………

…………………………………..

………………………………….

…………………………………..

Sub: Laboratory tests for materials (Soil, Sand Gravel, river Boulder) to be used for road

Construction.

Dear Sir,

You are requested to conduct the tests as mentioned in the enclosed annexure on the

materials submitted which is proposed to be used for Construction of Approach 300m on

either Side for RCC BR.No1/1 over river Katakhal at Gaglacherra. These being the direction

from the concerned department vide their letter no. NO: …………….. …. Dated…………….

enclosed for your reference.

Yours faithfully,

For Modern Construction Co.,

R.P.Road, Dispur, Guwahati-6

Enclosed:

2) Annexure stating List of tests

3) Photostat Copy of Deptts. Letter

LIST OF TESTS OF THE MATERIALS TO BE CARRIED OUT AT INDEPENDENT LABORATORY:

1) LABORATORY TESTS ON SOIL FOR CONSTRUCTION OF EMBANKMENT, SUBGRDAE (INCLUDING SHOULDER):

a) Sand Content Test/Sieve Analysis [IS 2720(Part-4)]

b) Plasticity Test[IS 2720(Part-5)]

i) Liquid Limit(LL)

ii) Plastic Limit(PL)

iii) Plasticity Index(PI)

c) Proctor Density Tests[IS 2720(Part-7/8)]

d) Moisture Content Test[IS 2720(Part-2)]

e) CBR Test[IS 2720(Part-16)]

The Laboratory Report should include the graph of density plotted against

moisture content, mentioning the maximum dry density, OMC etc.

2) LABORATORY TESTS ON GRANULAR SUB-BASE MATERIAL (GSB):

a) Sieve Analysis /Grading test

b) Atterberg Limits(LL & PL )

c) CBR Tests

d) Proctor test(OMC & Dry density)

e) Deleterious Constituents

Note: The Laboratory Report should include the LL & PI value corresponding the material

passing the 425 micron sieve

3) LABORATORY TESTING ON MATERIALS TO BE USED AS ROAD AGGREGATES:

The river boulder as the parent material proposed to be used for road aggregates should

be tested for the following properties:

a) Aggregate Impact value

b) Water Absorption

c) Los Angeles Abrasion Value

d) Specific Gravity Soundness Test etc.