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ABSTRAK

Dinding penahan tanah merupakan salah satu dari berbagai metode untuk

mengatasi kelongsoran suatu lereng. Banyaknya metode yang bisa digunakan

memiliki sisi kelemahan, kelebihan dan kesesuaian dengan kondisi dilapangan.

Salah satu metode yang dapat digunakan ialah dengan menerapkan lembaran

geosintetik sebagai bahan perkuatan tanah.

Studi kasus lereng sungai pada proyek pembangunan gedung D3

Ekonomi UII, terdapat suatu dinding penahan tanah dengan pasangan batu.

Perencanaan redesain dinding penahan tanah dengan pasangan batu diawali

dengan menentukan stabilitas eksternal dan stabilitas internal struktur tersebut.

Tahapan redesain dengan menggunakan geotekstil akan diperoleh dimensinya,

selanjutnya dianalisis stabilitas eksternalnya untuk mengetahui tingkat keamanan

dan menghitung Rencana Anggaran Biaya (RAB).

Design dinding penahan tanah dengan pasangan batu, dinyatakan aman

terhadap stabilitas eksternal dan stabilitas internal. Hasil analisis desain dinding

penahan tanah dengan geotekstil woven tipe georeinfox, didapat dimensi lebar

4m dan tinggi 6,75 m, dan dipasang 15 lapis geotekstil dengan jarak antar

geotekstil yang bervariasi dari 0,25 m, 0,5 m,dan 0,75 m. Stabilitas eksternal

dinding penahan tanah dengan geotekstil didapat faktor aman untuk stabilitas

terhadap gaya geser sebesar 2,4289,stabilitas gaya guling diperoleh sebesar

4,0876 , stabilitas terhadap daya dukung tanah didapat 5,1407. RAB hasil

redesain menggunakan geotekstil sebesar Rp. 391.236.337,064 lebih mahal

dibandingkan dengan RAB dinding penahan tanah dengan pasangan batu,

sebesar Rp 277.331.198,087.

Kata kunci : Dinding penahan tanah dengan pasangan batu, geotekstil ,

stabilitas internal dan stabilitas eksternal, RAB.

ABSTRACT

Soil retaining wall is considered as one of many to overcome the slide slope.

Various types of methods that can be applied surely have their own weakness,

strength, and appropriation within the fields condition. One of possible method to

apply is by employing the geo-synthetic sheet as the substance to fortify the land.

From the case study along the river slope in D3 UII buildings founding

project, it can be perceived that there is a kind of soil retaining wall by utilizing

stones. The redesign planning of soil retaining wall by utilizing stones was started

with deciding the external and the internal stability from its structure. From

employing the geo-synthetic sheet in the redesign stage, the buildings dimension will

be obtained, next the external stability is analyzed to measure the security level and

to calculated the budget plan (RAB).

The design of soil retaining wall by utilizing stones, considered as the save

one toward the external and internal stability. From the analysis of soil retaining

wall design by applying woven geo-textile type geo-reinfox, the result indicates that

wide dimension of its calculated as 4 meters width with the 6,75 meters height, and it

is also equipped with 15 layers of geo-textile that have variation in it is gap, from

0,25 meters, 0,5 meters, and 0,75 meters. The external stability of soil retaining wall

with geo-textile is also considered as the save one towards the sliding force friction

as shown by 2,4289 point, with the spinning force as shown by 4,0876 point, as well

as the 5,1407 point shown by land supporting power stability. The result of the

budget plan which applying geo-textile is Rp 391.236.337,064 ,it is more expensive

than budget plan for the soil retaining wall which applying stones, which is Rp

277.331.198,087.

Keyword : Soil Retaining Wall with Stones, Woven Geo-textile , Internal Stability,

External Stability, Budget Plan.

4. ABSTRAK5. ABSTRACT