International Conference of Health Polytechnic Surabaya, International Conference

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PERCOLATION METER FOR PERCOLATION TEST ( Design of Measurement Tools an attempt for Patent)
Winarko ., Ferry Kriswandana, Sudjarwo ., Ernita Sari

Last modified: 2016-12-07

Abstract


Introduction: Up to now, measurement of the soil absorbing power is done through a percolation test, an
experiment conducted to determine the ability of soil to pass water, expressed in minutes per inch
(minutes/inch).. Percolation rates resulted from the experiment are used to build catchment areas that can be
either leach field or infiltration wells. The experiments were performed in a location that will be used as a
catchment area by preparing six (6) tube shaped holes with a diameter of 10-30 cm, or a square with sides 1030
cm
and
a depth
of
60 cm,
and
100
cm
distance
between
holes.

This
study
generally
aims
to
analyze
the
ability
of
the
percolation
meter
to
measure
the
soil
absorption
rate
in

minutes
per
inch,
and
especially
to
determine
soil
percolation
rate
without
the
proposed
percolation
meter,
and

the
soil
percolation
rate
using
the
proposed
percolation
meter,
to

analyze the difference of percolation rates
between both measurement results, with and without percolation meter and to determine correction figures to
obtain actual results.
Method: The method used in this study was a "Field Experiment", using artificial medium as the catchment
area consisting of a mixture of sand stone and garden soil. The sample size in the experimental design is based
on the number of replication. Theory and Applications (Walter T. Federer 1955). According to Kuntoro,
Faculty of Public Health, University of Airlangga, in a correspondance (12 February 2012) with Samad
Hedayat Dept. of Mathematics, Statistics and Computer, Illinois University, Chicago USA, that the formula for
replication is: (r -) (k - 1) ≥ 15 where r = number of replications and k = number of treatments. The number of
treatment is 2 (two kinds of measurement) so that: r ≥ {15: (2 -1)} + 1 to obtain a sample size (replication) or r
≥ 16 replication, so that sample size are 32 consisting of 16 samples in the control group and 16 samples in the
treatment group(16 replication x 2 treatment groups). Data from the experiment are shown in tabular form
which will then be subjected to descriptive analyses to obtain a correction factor.
Result: The results indicated that percolation rate measured without Percolation Meter ranges between 2.2
through 4.1 minutes per inch with an average of 2.7 minutes per inch., while the percolation rate measured
with Percolation Meter ranges between 0.5 - 1 minute per inch with an average of 0.6 minutes per inch and the
correction factors for use with this tool ranges from 3.7 meter through 6 with an average of 4.
Conclution: This study suggests to do experiments using Percolation Meter with specifications: 4-inch
diameter PVC pipe, 60 cm long provided with 0.5 inch hole, 15 cm from the bottom, transparent pipe fitted
with a 0.5 inch wide 15 cm, height 45 cm and marked along the upper and lower limits 6 inch long, and the
result is multiplied by a correction factor of 4, it is necessary to conduct further study on actual soil with
varying soil textures, using the same procedures prior to making attempts for Haki or to obtain a patent.

Key words : Percolation Meter, Percolation test and Percolation rate

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