Degree of saturation of soil

Answer: a) Ratio of the volume of water to the total volume of voids. Explanation: The voids in soil mass are filled with water & air. The volume of water volume to the total volume of voids in a given soil mass is called a degree of saturation. All the voids are filled with water … Read more

Correct relationship between porosity and void ratio

Answer: b) 1-n= 1/(1+e) Explanation: Consider, • e is the void ratio. • n is the porosity. Void ratio is simply the ratio of volume of void to the volume of soil solid. i.e. , e = Vv / Vs e = Vv / Vs = n/(1+n) n= Vv/V = e/(1+e) n= e x (1-n) … Read more

State the following statement true or false.

Answer: a) True Explanation: The value of the degree of saturation according to the different soil sample are shown in the following table; Sr. No.      Soil Sample                    Range of degree of saturation 1                  Humid      … Read more

Degree of saturation of soil

Answer: c) 81.81% Explanation: Given Data: The specific gravity of soil, G=2.7 Void ratio of soil, e=0.66 The moisture content of the soil, w=20%=0.2 The formula of the degree of saturation is, S = w G / e S = (0.2 x 2.7) / 0.66 S = 0.8181 In percentage, the degree of saturation is … Read more

Maximum safe bearing capacity

Answer: d) 50 Explanation: Actually, the value of safe bearing capacity is very less for very soft, wet & muddy clay. Since the presence of very poor intermolecular attraction between the molecules in such type of soft soil, it possesses deficient bearing capacity.

Maximum safe bearing capacity

Answer: b) 3300 Explanation:  The maximum safe bearing capacity of the soil is the term that is used to indicate the maximum amount of pressure that is soil can withstand without the occurrence of any risk of shear failure & settlement.

Density index

Answer: b) 1 Explanation: The value of the void ratio is equivalent to the minimum value of the void ratio when the cohesion-less soil is present in its loosest form. i.e., e = e (min.)…(i) The density index is, ID = (e (max.) – e)/(e(max.)-e(min.))…(ii) From equation (i) & (ii), we will get, ID = … Read more

Correct range of cobble

Answer: b) 80 to 300mm Explanation: The Indian Standard grain size classification is given in the following table: Boulder = Size greater than 300mm Cobble = 80mm to 300mm Size Gravel = 4.75mm to 80mm Size Sand = 0.075mm to 4.75mm Size Silt = 0.002 to 0.075 mm Size Clay = Less than 0.002 mm … Read more

Density index

Answer: b) 80.2% Explanation: The relationship between the relative compaction & density index is shown as, Rc = 80 + (0.2 x ID) Where,  Rc is relative compaction.  ID is density index. Substitute the value of density index as one; then the relative compaction will become, Rc = 80 + (0.2 x 1) … Read more

Relative compaction

Answer: c) γd / γd(max.) Explanation: The ratio of soil’s dry density to its dry density corresponding to the most compact state is called relative compaction. Rc = γd / γd(max.) Where,  Rc = Relative compaction  γd = Dry density of soil  γd(max.) = Dry density of soil corresponding to the most … Read more