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Determine The In-Situ Dry Density Of Soil By Core Cutter Method

This test is done to determine the in-situ dry density of soil by core cutter method as per IS: 2720 (Part XXIX) – 1975.The apparatus needed for this test is

i) Cylindrical core cutter
ii) Steel dolley
iii) Steel rammer
iv) Balance, with an accuracy of 1g
v) Straightedge
vi) Square metal tray – 300mm x 300mm x 40mm
vii) Trowel

Procedure Determine The In-Situ Dry Density Of Soil By Core Cutter Method
i) The internal volume (V) of the core cutter in cc should be calculated from its dimensions which should be measured to the nearest 0.25mm.

ii) The core cutter should be weighed to the nearest gram (W1).


iii) A small area, approximately 30cm square of the soil layer to be tested should be exposed and levelled. The steel dolly should be placed on top of the cutter and the latter should be rammed down vertically into the soil layer until only about 15mm of the dolly protrudes above the surface, care being taken not to rock the cutter. The cutter should then be dug out of the surrounding soil, care being taken to allow some soil to project from the lower end of the cutter. The ends of the soil core should then be trimmed flat in level with the ends of the cutter by means of the straightedge.

iv) The cutter containing the soil core should be weighed to the nearest gram (W2).

v) The soil core should be removed from the cutter and a representative sample should be placed in an air-tight container and its water content (w)


Bulk density of the soil g cc Y = [W2 – W1]/ V g/cc
Dry density of the soil g cc Yd = 100Y/[100+w] g/cc

Average of at least three determinations should be reported to the second place of decimal in g/cc.
A sample proforma for the record of the test results is given below


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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

If you have a query, you can ask a question here.

51 comments on "Determine The In-Situ Dry Density Of Soil By Core Cutter Method"

u.v.s.rao says:

whether sand replasement test can be used for testing semi densebituminous concrete

praveen says:

very interesting to browse the entire subject in internet.

N.Uma Sentil says:

what is bituminous sheet?whether this item being used in higways if used what is the methodology of execution and quality control checks.

rajesh says:

sir , please tell me the cement, sand ,aggregate ,and water consumption of all types of mixes and its calculation.And also for plastering.Thank you.

J.K.Sahu says:

what is the procedure for determine the %age of compaction of soil by procyor dencity test?.

keyur raijiwala says:

what is minimun soil density requier for embackment of earthwork?
is it 1.8 or anything ease.?

tarun says:

at my site backfilling is going on…
I hv..
Core cutter appratus and a moisture meter in my lab..
Can u plz tell what can i do for compaction testing of soil with use of these appratus…
Plz rply…
Thnk u…

Sanjay s. bijwe says:

I read the detail core cutter method. It is found useful to us.I will always in
contact with your website.

Muhammadh Fahdan says:

As a civil engineering student I take this site as an opportunity to improve my knowledge on the dynamic field of civil engineering and its aspects. This site helps a lot on practicals which are essential in civil engineering. We too recently had the core cutter method practical simultaneously with the sand cone method.

rajesh says:

please clarify compaction test shall be conducted for bottom layer of open foundation or not

Muhammad Zain says:

Core Cutter Procedure is given in a very tremendous way

Ch. Prabin Chandra says:

Core Cutter Procedure is given in a difficult procedure. i could not understand clearly… give easy way of procedure and self explanatory….

emeshc says:

Mr. Ch prabin chandra do you know how can we do a core test.
what are the requirement?

emeshc says:

How can we determine field dry density of soil and a brief description of Core test for compacted soil.

awaiting replay

emeshc says:

What is Hardcreete?

praveenkumar says:

What is the limiting value of field dry density of soil by core cuttr method?


How many number of core cutter test(field soil density) require for each 300mm layer compaction for 1000 sq. mtr. plot area


Why need to necessary to make a number of repeat determination for a avg. Result
we can take one core after site condition / observation and choose the suitable area if the result ontain constant , i think that should be authentic .

Dike henry ozioma says:

What are the procedure to determine the in-situ density test using speedy moisture tester. Pls reply.

Vinod says:

It is so….. good to browse

s.s.hati says:

What is the method to check the stone dust(4.75mm to 75 mocron) compaction?can i use sand compaction method?

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