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INDONESIA
Inersia : Jurnal Teknik Sipil dan Arsitektur
ISSN : 0216762X     EISSN : 2528388X     DOI : -
Core Subject : Engineering,
INERSIA is stand for INformasi dan Ekspose hasil Riset Teknik SIpil dan Arsitektur. This scientific journal is managed by the Department of Civil Engineering and Planning Education, Faculty of Engineering, Yogyakarta State University, in cooperation with the Persatuan Insinyur Indonesia (PII). It publishes and disseminates research results from lecturers and post graduate students from various universities in Indonesia, which has contributed to the development of science and technology, especially in the field of Civil Engineering and Architecture. INERSIA is published twice a year, in May and December.
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Articles 312 Documents
STUDI KASUS IMBANGAN ANGKUTAN SEDIMEN DI KALI PUTIH Rizal Gunawan, Darmono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 11, No 1 (2015): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.339 KB) | DOI: 10.21831/inersia.v11i1.9951

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ABSTRACTThis study aims to find out the volume of a flood plan and balance between sediment raised in themining of sand and sediment that comes in the time of flooding in kali Putih river’s area regional ofSrumbung. The method of study is using observation method, interview method, and literaturemethod. Hydrology data used in this study is map kali Putih river, map rain stasiun, and gradationof sand grains. To calculate the volume of a flood plan is using the rational method, weduwenmethod, and hasper method. And to calculate sediment transport using Mayer, Peter and Mullerformulation. The calculation based on 5 rain station Argomulyo, G.maron, Ngepos, Babadan, andKaliadem station using (1) Rasional, (2) Weduwen and (3) Hasper to 5 year reissue period are: (1)233,94 m3/sec, (2) 80,67 m3/sec, (3) 129,48 m3/sec. Tthe result of the calculation of sedimenttransport using Meyer, Petter and Muller formulation produces sediment transport base for theentire widht of the river of 4,66 m3/second, and base sediment transport for 1 hour of 16776m3.From the result of mining sediment of Srumbung area is 492750 m3/year. So the mining wasdone in Srumbung for 1 year is 492750 m3can be offset by during floods for 11,54 hours resultingheaps of 493214,4 m3.
ANALISIS NILAI PGA (PEAK GROUND ACCELERATION) UNTUK SELURUH WILAYAH KABUPATEN DAN KOTA DI JAWA TIMUR Siti Ayu Kumala, Wahyudi
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 12, No 1 (2016): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.546 KB) | DOI: 10.21831/inersia.v12i1.10348

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ABSTRACTThis study aims to forecast of seismic hazards in Indonesia have done, but detail analysis of each region needsfurther assessment. East Java is an area with high earthquakes Frequency. Therefore, the analysis of seismichazard in East Java in detail is necessary as a first step in disaster mitigation. This research aims to make PGAmap for for 10% and 2% PE in 50 years (return period of 500 years and 2500 years) as mitigation of tectonicearthquake disaster in East Java region. The PSHA 2007 from USGS (United State Geological Survey) is asoftware that was used in this analysis process. Data of the earthquake catalog used in this analysis is thehistorical events earthquake from 1900 to 2015, with area 109oBT - 116oBT and 6oLS - 12oLS.The result of thiscalculated obtained distribution hazard value in PGA condition for 10% and 2% PE in 50 years (return period of500 years and 2500 years) in bedrock are 0,2 g – 0,4 g and 0,45 g – 0,65 g. This result is higher than result fromRevison of Earthquake Maps of Indonesia SNI-03-1726-02 (2010) and show that East Java is including area withdetermine middle to high seismic hazardKeywords: PGA, PSHA, Seismic Hazard AnalysisABSTRAKPenelitian mengenai prediksi dari resiko bahaya gempa (seismic hazard) di Indonesia telah banyak dilakukan,tetapi untuk detail analisis untuk setiap wilayah perlu dilakukan kajian lebih lanjut. Jawa Timur merupakan salahsatu wilayah yang cukup sering terjadi gempabumi, oleh karena itu penelitian mengenai analisis seismic hazardsecara mendetail penting sebagai langkah awal mitigasi bencana. Tujuan penelitian ini adalah untukmenghasilkan peta kontur PGA (peta hazard) wilayah Jawa Timur untuk probabilitas terlampaui 10% dan 2%dalam 50 tahun (gempa 500 dan 2500 tahun) sebagai upaya mitigasi bencana gempabumi tektonik di wilayahJawa Timur. Analisis ini menggunakan bantuan program PSHA 2007 dari USGS. Data yang digunakan dalampenelitian ini adalah data katalog kejadian gempabumi periode tahun 1914 sampai 2015, pada area 109oBT -116oBT dan 6oLS – 12oLS. Hasil studi ini berupa peta PGA Nilai hazard pada kondisi PGA (T = 0,0 detik) untuk10% PE 50 tahun yaitu 0,2 g – 0,4 g dan untuk 2% PE 50 tahun 0,4 g – 0,65 g. Hasil ini lebih tinggi dari hasil Petagempa Indonesia SNI-03-1726-02 revisi (2010) dan menunjukkan bahwa Jawa Timur merupakan daerah dengantingkat kerawanan bencana gempabumi dengan kategori sedang sampai tinggi.Kata kunci: Analisis seismic Hazard, PGA, PSHA
APLIKASI GREEN ARCHITECTURE PADA RUMAH GEDONG . Anisa
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 6, No 2 (2010): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2479.095 KB) | DOI: 10.21831/inersia.v6i2.10544

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ABSTRACTGreen architecture is a scheme process in lessening unfavourableenvironmental impact, increase comfort of man by increasing efficiency, and reductionof usage of resource, energy, usage of farm, and management of effective garbage inarchitecture level (Kwok Allison dalam Ming Kok, Cheah, 2008). This research result,that is found some element in houses gedong which are evidence green architecture.(1) vegetation optimalisation which form out of two yard at house gedong; (2) Themany building side which diekspos and mass configuraton in site; (3) Design fasadebuilding, possible to maximize natural atmosphere and illumination; (4) Terrace;coreand teritis. Terrace amounting to multiple and teritis the in all heat Create building sideto depend and don't coming into house; (5) Draught with crossed ventilation,presentation of from aperture in the form of door, window, roster and other aperture atpart of building wall.Keyword: Green architecture, rumah Gedong
PENGARUH PENAMBAHAN SUPERPLASTISIZER TERHADAP CAMPURAN BETON RINGAN YANG MENGGUNAKAN STYROFOAM Kusnadi Kusnadi; Dewi Sulistyorini
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 2 (2011): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1300.485 KB) | DOI: 10.21831/inersia.v7i2.3684

Abstract

The risk of failure of structures effect of earthquake be high due to the heavyvolume of concrete has a fairly high (2400 kg/m3). Advances in technology and theimpact of the economic crisis encourage construction of infrastructure use concretemasonry units under 1900 kg/m3 in weight. The use of lightweight concrete is thefiller material styrofoam intend at non structural components like wall. One of theproblem of making lightweight concrete using styrofoam is the low value of slump, sothat the mix becomes difficult (low workability). It is therefore necessary to addmaterial superplastisizer This research used 20 cylinder test samples. Thecomposition of the mixture consists of sand, cement and grain of styrofoam. Thestyrofoam in concrete is 20% in volume. The Sample variation consists of lightweight concrete using styrofoam without superplastisizer is four cylinder, with addedsuperplastisizer four cylinder were 0.5%, 1.0%, 1.5% and 2%, respectively in weightof cement. The results showed the addition of superplastisizer 0.5%, 1%, 1.5% and2% of the cement weight increases the value of slump were 100%, 183%, 216% and507% respectively. The addition of superplastisizer 0.5%, 1%, 1.5% and 2% of thecement weight increase ceompression strength were 8.48% 4.25%, 12.67% and17.37% respectively. The addition of superplasticizer will increases the slump for thesame water content in fresh concrete, so can increase the compressive strength ofconcrete cylinder.Keyword : beton styrofoam, workabilitas, superplasticizer
Pengaruh Pembalutan Carbon Fiber Wrap (CFW) terhadap Daktilitas Balok Beton Bertulang Sri Rejeki Laku Utami; Nuroji Nuroji; Antonius Antonius
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 12, No 2 (2016): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (990.415 KB) | DOI: 10.21831/inersia.v12i2.12589

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ABSTRACT Wrapping Carbon Fiber Wrap on reinforced concrete beams are expected to contribute to the improvement of ductility. In this study four beam specimens. The first test object beam 3D16 Normal used as a normal beam. The test object into two beams 3D16 CFW is used as a treatment beam with the dressing CFW. The test object to the three beams 4D16 Normal is used as a normal beam. The test object into four beams dalah 4D16 CFW is used as a treatment beam with the dressing CFW. Dimensional beam - the beam is 150 x 250 mm, the effective length 2000 mm. Imposition given One Point Loads, to test the loading on beam flexural planned to put the pieces of force P symmetrically at a distance that is equal to ½ L 1000 mm. And given a dressing CFW on the beam 3D16 CFW along the 600 mm (2.4 h) the middle span length of 2000 mm with treatment CFW Completely Wrapped Member. From the test results maximum bending capacity respectively for beams 3D16 Normal of 104.04 kN while on the beams 3D16 CFW increased maximum bending capacity of 119.52 kN, increase in ductility displacement on the beam by 33%. On the beam 4D16 Normal has a maximum bending capacity of 161.28 kN the beam 4D16 CFW increased maximum bending capacity of 162.64 kN, increase in ductility displacement on the beam by 45%. The maximum nominal value at the moment of reinforced concrete beam greatly affect the capacity maximum moment on the beam 3D16 Normal with beams 3D16 CFW after dressing CFW on the beams increased by 13% while on the beam 4D16 Normal with beams 4D16 CFW increased by 1%. Ductility curvature on beam 3D16 Normal with beams 3D16 CFW increased by 63% whereas for beams 4D16 Normal with beams 4D16 CFW curvature ductility increased by 67%. Keyword:  CFW (Carbon Fiber Wraps), ductility, flexural strength, moment-curvatur.  ABSTRAK Pembalutan Carbon Fiber Wrap pada balok beton bertulang diharapkan memberikan konstribusi terhadap peningkatan daktilitas. Pada penelitian ini empat buah benda uji balok. Benda uji pertama adalah balok 3D16 Normal yang digunakan sebagai balok normal. Benda uji ke dua adalah balok 3D16 CFW yang digunakan sebagai balok dengan perlakuan pembalutan CFW. Benda uji ke tiga adalah balok 4D16 Normal yang digunakan sebagai balok normal. Benda uji ke empat dalah balok 4D16 CFW yang digunakan sebagai balok dengan perlakuan pembalutan CFW. Dimensi balok – balok tersebut adalah 150 x 250 mm, dengan panjang efektif 2000 mm. Pembebanan diberikan One Point Loads, untuk melakukan uji lentur maka pembebanan pada balok direncanakan dengan menempatkan satu buah gaya P secara simetris pada jarak ½ L yaitu sebesar 1000 mm. Dan diberikan pembalutan CFW pada balok 3D16 CFW sepanjang 600 mm (2,4 h) ditengah bentang yang panjangnya 2.000 mm  dengan perlakuan CFW Completely Wrapped Member. Dari hasil pengujian kapasitas lentur maksimum secara berturut- turut untuk balok 3D16 Normal sebesar 104,04 kN sedangkan pada balok 3D16 CFW  mengalami peningkatan kapasitas lentur maksimum sebesar 119,52 kN, peningkatan daktilitas perpindahan pada balok sebesar 33%. Pada balok 4D16 Normal memiliki kapasitas lentur maksimum sebesar 161,28 kN sedangkan balok 4D16 CFW mengalami peningkatan kapasitas lentur maksimum sebesar 162,64 kN, peningkatan daktilitas perpindahan pada balok sebesar 45%. Nilai momen nominal maksimum pada balok beton bertulang sangat mempengaruhi peningkatan kapasitas momen maksimum pada balok 3D16 Normal dengan balok 3D16 CFW setelah dilakukan pembalutan CFW pada balok mengalami peningkatan sebesar 13% sedangkan pada balok 4D16 Normal dengan balok 4D16 CFW mengalami peningkatan sebesar 1%. Nilai daktilitas kurvatur pada balok 3D16 Normal dengan balok 3D16 CFW mengalami peningkatan sebesar 63% sedangkan untuk balok 4D16 Normal dengan balok 4D16 CFW mengalami peningkatan daktilitas kurvatur sebesar 67%. Kata kunci: CFW (Carbon Fiber Wraps), daktilitas, kuat lentur, momen-kurvatur.
KAJIAN BANGUNAN DI INDONESIA DENGAN AMERIKA (STUDI KASUS RUMAH DI BANTUL) Adi Setiabudi Bawono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 7, No 1 (2011): Mei
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (812.541 KB) | DOI: 10.21831/inersia.v7i1.3706

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One of the activities of mitigation the earthquake is detect of damage andestimate the probability of building material losses because of earthquake in each typical building on an area. In the developed countries attempt to predict the probability of damage  to  the building caused by the quake has been a lot done. One method used is HAZUS Method (Hazard United States). In evaluating the damage to buildings, one method is used assessing HAZUS level the probability of damage to each building. This study is an initial study to compare building in Bantul-Indonesia and United State Of America.The Data collected includes the characteristic of houses. Conclusion obtainedfrom this research is that house in bantul different with HAZUS type of building.
ANALISIS PERKUATAN LENTUR BALOK KAYU SENGON DENGAN SISTEM KOMPOSIT BALOK SANDWICH (LAMINA DAN PLATE) Teguh Mulyo Wicaksono; Ali Awaludin; Suprapto Siswosukarto
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 13, No 2 (2017): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (951.472 KB) | DOI: 10.21831/inersia.v13i2.17176

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ABSTRACTThe using of wood beam for structural purposes are still wood-oriented of good type and quality. Along with the increasing use of wood in the field of construction, the availability of large size wood and good quality becomes more limited. Moving from previous research on weak wood composite, an idea was made to analyze the strength of bending of logs from weak wood through composite engineering. Sengon wood is weak wood with compretion strength 16,91 MPa, tensile strength 46,33 MPa, shear strength 3.51 MPa, flexural strength 23,52 MPa, MOE 4210,99 MPa and classification of E6. Component press lamina keruing with compretion strength 47,58 MPa. Component tesile plate steel with tensile strength 267,28 MPa. The maximum load of intact sengon beam (BSU) 8.04 kN while the composite laminated beam (BLK) of maximum load of 16.82 kN increased 109%. The flexural elasticity module of BSU 7.002,62 Mpa while the BLK of 10,419 MPa increased 49%. Flexural strength BSU 20.65 MPa while at 39.72 MPa BLK increased 92%. BSU rigidity at 6.4 kN proportional load is 153,02 while at BLK 325,06 it increases 112,43%. The curvature of BSU -77.42 at maximum load of 8.04 kN whereas in BLK is -24.03 increased 69%. The efficiency structure of the BSU is 1.07 and in the BLK 1.24 is increased by 15.89%. The pattern of BSU failure is brittle on linear loading with disconnected fibers. While BLK sengon damage does not cause the beam collapsed because it is still held steel plate and lamina keruing. The analysis for live load is 350 Kg / m2, then the maximum load is 10.5 kN. At BLK able to withstand the maximum load of 16.82 kN, the concept of this laminated composite beam can be used as a structural beam.Keywords: sengon, beams, composites, structural beams.AbstrakPenggunaan balok kayu untuk keperluan struktur masih berorientasi pada kayu dari jenis dan mutu yang bagus. Seiring dengan makin banyaknya penggunaan kayu dalam bidang konstruksi maka ketersediaan kayu ukuran besar dan bermutu baik menjadi semakin terbatas.Beranjak dari riset-riset terdahulu tentang perkuatan kayu lemah, dibuatlah gagasan untuk menganalisis kekuatan lentur balok dari kayu lemah melalui rekayasa komposit.Kayu sengon merupakan kayu lemah dengankuat tekan 16,91 MPa, kuat tarik 46,33 MPa, kuat geser 3,51 MPa, kuat lentur 23,52 MPa, MOE 4210,99 MPa dan termasuk klasifikasi E6. Komponen tekan lamina keruing dengan kuat tekan 47,58 Mpa. Komponen tarik steel plate dengan kuat tarik 267,28 Mpa. Beban maksimum balok sengon utuh (BSU) 8,04 kN sedangkan balok laminasi komposit (BLK) beban maksimum16,82 kN meningkat 109%.Modulus elastisitas lentur BSU 7.002,62 MPa sedangkan BLK sebesar 10.419 Mpa meningkat 49%. Kuat lentur BSU 20,65 MPa sedangkan pada BLK 39,72 Mpa meningkat 92%.Kekakuan BSU pada beban proporsional 6,4 kN adalah 153,02 sedangkan pada BLK 325,06 meningkat 112,43%.Kelengkungan BSU -77,42 pada beban maksimum 8,04 kN sedangkan pada BLK adalah -24,03 meningkat 69%.Efisiensi struktur BSU sebesar 1,07 dan pada BLK didapatkan 1,24 meningkat 15,89%.Pola kegagalan BSU bersifat getas pada pembebanan linear dengan serat terputus. SedangkanBLK kerusakan sengon tidak menyebabkan balok runtuh karena masih ditahan steel plate dan lamina keruing. Analisis untuk beban hidup 350 Kg/m2, maka beban maksimum adalah 10,5 kN. Pada BLK mampu menahan beban maksimum 16,82 kN, maka konsep balok laminasi komposit ini dapat digunakan sebagai balok struktural.Kata kunci: sengon, balok, komposit, balok struktural.
KAJIAN SIFAT MEKANIK BETON RINGAN DENGAN PENGGUNAAN POLYSTYRENE SEBAGAI BAHAN SUBSTITUSI AGREGAT HALUS Siamet Widodo
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 1, No 1 (2005): Maret
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (864.268 KB) | DOI: 10.21831/inersia.v1i1.8229

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ABSTRACTLightweight concrete offers some advantages in reinforced concreteconstruction. It can be produced by replacing the normal aggregate (sand andgravel) with lightweight aggregate, either partially or fully, depending upon therequirements of density and strength. The present study covers the use ofexpanded polystyrene as fine lightweight aggregate in order to produce structurallightweight aggregate.These mixes were designed by using several variances of polystyrenevolume percentage by total fine aggregate. The substitution was done with 0%,25%, 500/0, 750/0 and 1000/0 by total volume of fine aggregate, with 0,50 watercement ratio. The Properties of hardened concrete namely compressive strength,splitting tensile strength and flexural strength were tested in 28 days of curingperiod.It is observed that polystyrene lightweight concrete has sufficient strengthto be accepted as structural lightweight concrete in 25~'O substitution by totalvolume of fine aggregate, with 17,35 MPa of compressive strength, but thecompressive strength will always decrease depending on the increasing ofpolystyrene percentage. The splitting tensile strength of polystyrene lightweightaggregate approximately 14%--18% of its compressive strength,for the normalconcrete it is nearly 10% of 28 days compressive strength. The flexural strengthwas ranging between 20%-30% of its compressive strength, higher than normalconcrete that nearly 15% of its compressive strength.Keywords: lightweight concrete, mechanical properties, polystyrene
PENILAIAN FASILITAS JALUR PEDESTRIAN DARI ASPEK SAFETY, HEALTH, AND ENVIRONMENT (SHE) Dinda Fardila; Henricus Priyosulistyo; Andreas Triwiyono
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 14, No 2 (2018): Desember
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.906 KB) | DOI: 10.21831/inersia.v14i2.22536

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ABSTRACTPedestrian way is a space providing services for pedestrian in carrying out their activities. This research aims to evaluate the liability of the pedestrian facilities in complying the prevailing standards and safety, health, and environment (SHE) instead of determining the priority rank for improving the performance of pedestrian facilities. This research was conducted on the pedestrian way of Malioboro area in Yogyakarta, by field survey on 23-27 January 2018. The research used questionnaires with incidental sampling technique. The data was performed and statistically analyzed by SPSS program in terms of Importance Performance Analysis (IPA) method and inference analysis using Rank Spearman's truth test. The result of this research showed that the pedestrian way had generally met the standards (57.14%) but several facilities (38.10%) did not meet the criteria and 4.76% was not available in the pedestrian way of Malioboro.The level of performance of pedestrian facilities based on SHE was mostly high (satisfied). The facilities that must be improved were the cleanliness of the pedestrian way and the toilet. Some respondences were still able to accept the conditions as follow: the speed of motor bike, the noises, street vendor layout, shop sign layout and the quality of building materials. Keywords: Environment, Importance Performance Analysis (IPA), Pedestrian way, Safety, Health ABSTRAKJalur pedestrian merupakan ruang yang memberikan layanan kepada pejalan kaki dalam melakukan aktivitasnya. Kajian ini bertujuan untuk mengevaluasi kelayakan kondisi fasilitas jalur pedestrian terhadap standar yang berlaku, safety, health, and environment (SHE), dan menentukan prioritas layanan yang diperlukan untuk peningkatan kinerja fasilitas jalur pedestrian. Kajian ini dilakukan pada jalur pedestrian Kawasan Malioboro dengan cara survey lapangan pada tanggal 23-27 Januari 2018. Kajian ini menggunakan kuesioner berskala Likert dengan teknik pengambilan sampel insidental sampling.Analisis data menggunakan analisis statistik deskriptif, metode Importance Performance Analysis (IPA) dan analisis inferensi (uji korelasi  Spearman Rank). Hasil kajian menunjukkan bahwa fasilitas jalur pedestrian telah memenuhi standarsebesar 57,14%, tetapi 38,10% tidak memenuhi kriteria dan 4,76% fasilitas tidak terdapat di jalur pedestrian kawasan Malioboro. Fasilitas yang harus ditingkatkan kinerjanya pada prioritas utama adalah tingkat kebersihan pedestrian dan toilet. Beberapa pedestrian masih dapat menerima kondisi berikut :kecepatan pengendara bermotor, kebisingan, tata letak PKL, tata letak papan nama toko dan kualitas bahan bangunan. Kata kunci: Environment, Importance Performance Analysis (IPA), Jalur pedestrian, Safety, Health
PENGARUH KADAR AIR TERHADAP KUAT GESER PADA TANAH LANAU Endaryanta Endaryanta
Inersia : Jurnal Teknik Sipil dan Arsitektur Vol 2, No 1 (2006): Maret
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1292.912 KB) | DOI: 10.21831/inersia.v2i1.8300

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Landslide disaster such as bank slide or embankment slide often occurs.This it begins with a simple problem, that is infiltration of rain water into soilcausing the decrease of soil strength resulting in collapse. The research triesto explain the water influe'nce at the shear strength of soil to find out how muchwater content may induce soil collapse.This experimental research was conducted in the soH laboratory usingmud from Imogiri, Bantul conditioned in several water contents (from 10% to500/0) and direct shear tests were then applied. This experiment would produceCD (internal soil shear angle), c (soil cohesion), and finally slide off soil safetyfactor (F).This research has resulted:1. at a low water content (10%) the CD soil is low, the CD increases by increasingthe water content, but the next increas of water' content causes a decreaseof CD. The maximum CD (32.5°) reaches at 23% of water content.2. at a low water content (10%) the c soil is low, the c increases by increasingthe water content, but the next increasing of water content causes a decreaseof c. The maximum c (0.076 kg/cm2) reaches at 22% of water content.3. at a low water content (100/0) the F soil is low, the CD increases by increasingthe water content, but the next increasing of water content causes a decreaseof F. The maximum F reaches at 21% of water content.Key words: mud, soil, water content, shear strength, cohesion, land slide.

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