Efisiensi penggunaan material jenis tanah pada suatu pelaksanaan pekerjaan konstruksi, pemilihan jenis tanah yang akan digunakan harus disesuaikan dengan jenis pekerjaan konstruksi yang akan dilakukan. Untuk mengetahui spesifikasi jenis tanah dapat dilakukan penyelidikan tanah atau pengujian tanah sehingga sifat-sifat fisik dan mekanis pada tanah tersebut dapat diketahui. Penelitian untuk mengetahui sifat-sifat fisik tanah ini dilakukan di laboratorium Mekanika Tanah Jurusan teknik Sipil Fakultas Teknik Universitas Borneo Tarakan dengan lokasi pengambilan sampel berada di Kelurahan Juata Laut, Kota Tarakan. Penelitian ini dilakukan dengan pengambilan sampel tanah sebanyak 16 titik dengan kedalaman antara 3 sampai 4 meter di 3 lokasi quarry yang berbeda yang berada di Kelurahan Juata Laut, Kota Tarakan dengan jumlah total sampel sebanyak 120 sampel yang terdiri dari 60 sampel terganggu (disturbed sample = DS) dan 60 sampel tidak terganggu (undisturbed sampel = UDS). Pengambilan sampel dilakukan dengan cara pemboran menggunakan bor tangan (hand bor). Mengacu pada sistem klasifikasi tanah menurut ASTM, data yang diperoleh dari hasil pengujian kadar air, analisa saringan, berat jenis dan Atteberg limit (batas cair dan batas plastis) kemudian diklasifikasikan menurut jenis tanah masingmasing sampel berdasarkan kedalamannya. Dari hasil pengujian yang telah dilakukan, dapat diambil kesimpulan bahwa tanah di beberapa quarry tempat pengambilan sampel termasuk dalam golongan tanah berbutir kasar dengan tingkat plastisitas rendah sampai dengan sedang. Pada lokasi pertama, dilakukan pengambilan sampel sebanyak 5 titik dengan persentase pada kedalaman 1 meter dan 2 meter 60% termasuk jenis pasir berlempung (SC) dan 40% termasuk pasir berlanau (SM). Sedangkan pada kedalaman 3 meter 80% termasuk jenis pasir berlempung (SC) dan 20% termasuk jenis pasir berlanau (SM). Pada lokasi kedua dilakukan pengambilan sampel sebanyak 5 titik dengan persentase pada kedalaman 1 meter 80% termasuk pasir berlempung (SC) dan 20% termasuk pasir berlanau (SM). Sedangkan pada kedalaman 2 meter sampai dengan 4 meter 100% termasuk jenis pasir berlempung (SC). Pada lokasi ketiga dilakukan 6 titik pengambilan sampel dengan persentase pada kedalaman 1 meter sampai dengan 4 meter 50% termasuk pasir berlempung (SC) dan 50% termasuk jenis pasir berlanau (SM).

For efficiency using the material of land type ground at one particular construction work execution, type of land ground election to be used have to be adapted by type of construction work to be conduced. To know the specification of type of land ground can be conducted by investigation of land ground or examination of land ground so that the nature of physical and mechanical at the land ground knowable. this Research to know the nature of physical of this land ground is conducted in laboratory Mechanics of Land Ground Majors technique Civil Faculty Of Technique in Borneo University Tarakan with location of intake of sample reside in Chief Of Village of Juata laut, Tarakan city. This research was conducted with intake the sample of land ground as much 16 dot with deepness between 3 until 4 meters in some quarry residing in Chief Of Village of Juata laut, Tarakan city with the score is sample as much 120 sample consisted by 60 sample annoyed (disturbed sample = DS) and 60 sample is not annoyed (undisturbed sample = UDS).Intake of Sample conducted by drilling to use (hand drill). Relate at system of qualified land ground according to ASTM, data obtained from result for examination of rate irrigate, filter analysis, specific gravity and Atteberg limit (liquid boundary and boundary plastic) later then disqualified according to type of land ground each sample of pursuant to its deepness From this result of examination which has been conducted can be taken by conclusion that land ground in some quarry place intake of sample is included in faction of harsh granulous land ground with storey level of low plastisitas up to medium. At first location, conducted by intake of sample as much 5 dot with percentage at deepness 1 meter and 2 meters 60% inclusive type of sand clay ( SC) and 40% inclusive of sand silt ( SM). While at deepness 3 meters 80% inclusive type of sand clay ( SC) and 20% inclusive type of sand silt ( SM). At location of second conducted by intake of sample as much 5 dot with percentage at deepness 1 meter 80% inclusive of sand clay ( SC) and 20% inclusive of sand silt ( SM). While deepness 2 meters up to 4 meters 100% inclusive type of sand clay (SC). Conducted by third location 6 dot of intake of sample with percentage of deepness 1 meters up to 4 meter 50% inclusive of sand clay ( SC) and 50% inclusive type of sand silt ( SM).