ALL ABOUT GEOTECHNICS: KLASIFIKASI UNTUK TANAH GAMBUT

Khusus untuk tanah gambut, maka berikut merupakan metode klasifikasinya berdasarkan tingkat pelapukannya :

Degree of Humification	Description
H1	Completely undecomposed peat which releases almost clear water. Plant remains easily identifiable. No amorphous material present.
H2	Almost completely undecomposed peat, which releases clear or yellowish water. Plants remains still easily identifiable and no amorphous material present.
H3	Very slightly decomposed peat which releases muddy brown water, but for which no peat passes between fingers. Plant remains still identifiable and no amorphous material are present.
H4	Slightly decomposed peat which releases very muddy dark water. No peat is passed between the fingers but the plant remains are slightly pasty and have lost some of the identifiable features.
H5	Moderately decomposed peat which releases very “muddy” water with also a very small amount of amorphous granular peat escaping between the fingers. The structure of plant remains is quite indistinct, although it is still possible to recognize certain features. The residue is strongly pasty.
H6	Moderate strongly decomposed peat with very indistinct plant structure. When squeezed about one third of the peat escapes between the fingers. The residue is strongly pasty but shows the plant structure more distinctly then before squeezing.
H7	Strongly decomposed peat. Contains a lot of amorphous material and very dry indistinct plan structure. When squeezed about one half the peat escapes between the fingers. The water, if any is released, is very dark and almost peaty.
H8	Very strongly decomposed peat with a large quantity of amorphous material and very dry indistinct plant structure. When squeezed about two third of the peat escapes between the fingers. A small quantity of plant material remaining in the hand consists of residues such as roots and fibres that resist decomposition.
H9	Practically fully decomposed peat in which there is hardly any recognizable plant structure. When squeezed, almost all of the peat escape between the fingers as fairly uniform paste.
H10	Completely decomposed peat with no discernible plant structure. When squeezed, all the wet peat escapes between the fingers.