Soil Testing Is Important For Construction

Feb 12, 2020 Posted by Admin

Soil testing becomes very important to check the quality of the soil before making your dream home or dream office. This is important because the ground or plain where you are going to build the building should have great quality. So, checking the ground or soil quality before the construction work starts is a must. Because protecting the home from earthquakes etc is vital. One should know Tips to Protect Your Home From an Earthquake.

Soil testing is done basically to check the bearing capacity. The physical and chemical composition of the soil goes under quality check. Along with soil testing, one should know other Tips to Build a Strong Foundation of a Building

The soil should have the capacity to withstand the weight of the building. Soil quality ensures the structure stabilization. The quality of soil depends on various factors like weather, climate changes, etc.

The depth and length of the pillars are determined depending on the soil quality. The amount of water or water level can be determined during soil testing. Based on the quality of soil tested, the type of Construction Materials to be Used can be decided. Baes on soil testing reports Quality of TMT Bars to be used can be determined. 

Example – If because of moisture the area is prone to corrosion, then it becomes essential to choose only corrosion – resistant TMT bars for the construction purpose. Also one should know the Tips to Save Steel and TMT Bars from Corrosion.

To have a better understanding of TMT Bars (saria) and Rebar, it becomes important to know the Manufacturing Process of Steel and also Manufacturing Process of TMT Bars

The testing of soil is a very important step in the whole construction process. If the soil testing is not done then the building becomes more prone to unknown dangers and the end result of that can be fatal.


Gravity Test
The gravity of the soil is the ratio between the unit weight of soil solids and water. 

There are few methods by which the gravity test can be done but the Density Bottle Method and Pycnometer Method is one of the most simple and common ones to get the desired results. In the Pycnometer Method, Vertex specific gravity bottle is known as pycnometer, which is weighed in 4 different cases that are:

•    Empty weight (M1)
•    Empty + dry soil (M2)
•    Empty + water + dry soil (M3)
•    Pycnometer filled with water (M4)

Specific gravity is determined by above given 4 masses at the room temperature by the below-given formula:

G = (M2 – M1) / (M2 – M1) – (M3 – M4)

Moisture Test

In this method, samples are collected from the site and weighed before it is put on the oven before drying. After taking the weight it is out on the oven and dried at 110o + 5oC.

After 24 hours, it is taken out from the oven and weighed again. The difference between the two weights is noted and the water or moisture content is determined from the difference in weight.

Atterberg Limits Test

Atterberg limits test on the soil is performed at 3 levels. The component for testing is done with fine, grained soil and if any critical component from water is present then it can be determined with it. The three limits that are evaluated:

•    Liquid Limit
•    Plastic Limit
•    Shrinkage Limit

Liquid Limit Test
The device used for this test is known as Casagrande’s Liquid Limit Device. This device consists of a cup with a moving up and down mechanism. The cup is moved up and down using a handle. The movement stops at some moment. After the water content of the soil is determined, the same procedure of if needs to be repeated 3 times post that a graph is to be drawn between log N and water content of the soil. Water content corresponding to N=25 is the liquid limit of soil.

Plastic Limit Test
In this test, a small ball of soil is to be created by adding some water. After resting it for some time the small balls are placed into a glass plate and rolled to 3mm diameter.
Until the thread breaks while rolling into the diameter that is less than 3mm water content is to be continuously reduced. It is to determine the water content of resultant soil which value is nothing but plastic limit.

Shrinkage Limit Test
The existing water in the soil is sufficient to fill the voids. The below-given formula is used to apply shrinkage test on soil:

Ws = (M2 – M1)n – (V1 – V2) Pw / M2

M1 = initial mass
V1= initial volume
M2= dry mass
V2= volume after drying
Pw = density of water
Dry Density Test
Dry Density Test of soil is performed at 2 Levels.

Core Cutter Method
The cylindrical core cutter of a standard dimension is used to cut the soil from the ground and the sample is tested by weighing. Water content from the sample is determined and then the dry density is calculated from the below-given relation: 

P = (M/V) / 1+w

Sand Replacement Method
Under this method, by excavation, a hole is created and the soil dry density is to be measured with it. The hole is fully filled with uniform sand of known dry density. Dividing the mass of sand poured into the hole with a dry density of sand gives the volume of the hole.


So now you know why soil testing is important for any construction purpose and also the different methods of testing the soil quality. If you are in Jaipur and Looking for The Best TMT bar Supplier, then Contact AV Steel which is the authorized dealer of Birla TMT bars in the state of Rajasthan. 



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