Objective

To find the percolation rate of the soil samples.

Apparatus used:

Funnel, Funnel stand, Stopwatch, Graduated cylinder, Beaker, Sand, Silt etc.

Description Percolation rate test is used to determine the water absorption capacity of the soil and plays a major role to determine filter field design and site suitability for an on-site wastewater treatment facility.

STEP  1 

Choose one of two soil type : Sandy soil or Silty soil.

Sandy soil Sample Silty soil Sample

STEP  2 

Take a funnel and put it on a funnel stand.

STEP  3 

Take the soil sample and put it in the funnel.

STEP  4 

Place the graduated cylinder below the funnel.

STEP  5 

Take a known amount of quantity of water (say 100ml) and pour it slowly over the soil in the funnel.

STEP  5 

Start the stopwatch and note down the amount collected in the cylinder after a known time and find the percolation rate of the sample.

Time, t (min)	Water level in the cylinder, a (ml)	Water collected in 15 mins, b (min)	Percolation rate, (b/t) (ml/min)
0	0	0	0

0

CHECK RESULT Please Enter Value to proceed

Time, t (min)	Water level in the cylinder, a (ml)	Water collected in 15 mins, b (min)	Percolation rate, (b/t) (ml/min)
0	0	0	0

0

CHECK RESULT

Result:

Average percolation rate of Sandy soil= 1.65 ml/min.

Average percolation rate of Silty soil= 0.72 ml/min