The engineering properties of soils are affected by four main factors: the predominant size of the mineral particles, the type of mineral particles, the grain size distribution, and the relative quantities of mineral, water and air present in the soil matrix.
Sifat-sifat keteknikan tanah dipengaruhi oleh empat faktor utama : dominasi ukuran partikel mineral, tipe partikel mineral, distribusi ukuran butir, jumlah relatif mineral, air, dan kehadiran udara di matriks tanah.