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iwan ristanto, Iwan Ristanto
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ANALISIS HUBUNGAN PENILAIAN INFRASTRUKTUR DESA BERDASARKAN INDEKS DESA MEMBANGUN (IDM) DESA METODE SINTAX CONTRAST HELMERT DI KABUPATEN WONOGIRI iwan ristanto, Iwan Ristanto; Handiana Devi, Rida; Azhar Firdausi, Annisa
Inisiasi Volume 13, Edisi 1, Juni 2024
Publisher : Badan Perencanaan Pembangunan Daerah dan Penelitian dan Pengembangan Kabupaten Wonogiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59344/inisiasi.v13i1.214

Abstract

Wonogiri Regency, there are 299 villages with village status that receive Village Fund (DD) allocations from the Central Government. Based on the Village Development Index (IDM), the average status of villages in Wonogiri Regency is as underdeveloped villages and developing villages. One of the reservoirs of poverty in Wonogiri Regency is in Kismantoro District and Tirtomoyo District. Limited human resources, in this case the Activity Implementation Team (TPK) in the field of village development, are an obstacle constraint in village development in Tirtomoyo District, Wonogiri Regency. This research aims to provide a public test in an assessment of the implementation of village infrastructure development in Tirtomoyo sub-district based on the status of the Village Development Index (IDM). The assessment analysis uses the Helmert contrast syntax statistical method with two types of variables, namely the independent variable (IDM status) and the dependent variable. dependent variable (making RAB and making concrete quality). In carrying out activities to make RAB and concrete quality mixtures, pre-test and post-test assessments are carried out. The results of the assessment using the Helmert Pos Hoc contrast test with the help of SPSS software show that H0 is rejected, meaning; The IDM status of independent villages is influential there is a difference compared to the IDM of developed villages, and is developing in the implementation of activities for making RAB and quality concrete mixes. Whereas H0 is accepted meaning; IDM status in developed villages has no effect/there is no difference compared to IDM in developing villages in terms of the ability to make RAB and concrete mix quality. 
ANALISIS STABILISASI TANAH LEMPUNG MENGGUNAKAN CAMPURAN ABU SEKAM PADI TERHADAP NILAI KUAT GESER TANAH iwan ristanto, Iwan Ristanto; Adiyanwar Shidiq, Rizhal; Aski Safarizki, Hendramawat
Inisiasi Volume 13, Edisi 1, Juni 2024
Publisher : Badan Perencanaan Pembangunan Daerah dan Penelitian dan Pengembangan Kabupaten Wonogiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59344/inisiasi.v13i1.221

Abstract

The main aim of stabilization is to change the technical properties of the soil itself, such as the compressibility and bearing capacity of the soil. Based on the results of testing the physical and mechanical properties of the original soil of Sambirejo Village, Puhpelem, Wonogiri according to the ASSHTO method, the original soil is included in group A-7-6, which is medium to poor clayey soil material. Meanwhile, according to the USCS method, it is included in the CH group, namely organic clay with high plasticity, fat clays. After conducting further research with variations in the rice husk ash mixture of 0%, 5%, 10%, 15%, and 20%, the results showed that the soil physical test showed the values of water content (W), liquid limit (LL), plasticity index (PI ), and the percentage passing filter No. 200 experienced a decrease with increasing percentage of addition of rice husk ash with yield figures on original soil of 53.00%, 52.00%, 15.32%, 62.00% while on original soil with a mixture of 20% rice husk ash obtained results of 50.11%, 41.10%, 1.65%, 51.00 %. Meanwhile, the specific gravity (Gs), plasticity limit (PL), and shrinkage limit (LL) increased with increasing percentage of rice husk ash addition with the yield figures on the original soil being 5.409%, 36.68%, 12.65%, while on the original soil with a mixture of rice husk ash 20% rice obtained yields of 6.071%, 39.45%, 26.89%. Based on the results of the Direct Shear Test, the soil experienced an increase with each addition of rice husk ash. The highest Direct Shear Test value occurred in 20% mixed soil, namely 0.583 kg/cm2 and the lowest Direct Shear Test value occurred in original soil, namely 0.394 kg/cm2.
ANALISIS STABILITAS TIMBUNAN TANAH DENGAN PERKUATAN GEOTEXTILE MENGGUNAKAN SOFTWAREPLAXIS (Studi Kasus Pembangunan Jalur Ganda Antara Solo Balapan – Kadipiro - Kalioso) iwan ristanto, Iwan Ristanto; Akhbar Romadhoni , Dimas; Agung Wibawa, Satria
Inisiasi Volume 13, Edisi 1, Juni 2024
Publisher : Badan Perencanaan Pembangunan Daerah dan Penelitian dan Pengembangan Kabupaten Wonogiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59344/inisiasi.v13i1.222

Abstract

This research aims to determine the stability of embankments without reinforcement and with reinforcement and the amount of settlement that occurs in accordance with the SNI geotechnical standard 8460 of 2017. The research location is in KM. 96 + 400 to 104 + 900 between Solo Balapan – Kadipiro – Kalioso. The analysis was carried out using Plaxis 2D Software version 8.6 without reinforcement, a safety factor value of 1.2 was obtained, where the result was below 1.5, which did not comply with the requirements of SNI 8460:2017 article 7.5.5. as well as a 30 day decline of 1,707 cm, a 100 day decline of 1.6 41cm and a 365 day decline of 1,691 cm. So it can be concluded that the embankment at that location is unstable. For this reason, additional geotextiles are added as reinforcement, after adding geotextiles. In the analysis of the embankment at KM 98 + 550 with the addition of embankment reinforced with geotextile, manual calculation results were obtained with a total of 5 layers of geotextile. The minimum geotextile length is 2.338 m and the stability of the bearing capacity is SF = 4.37 > 1.5. For embankment analysis at KM 98 + 550 after adding geotextile reinforcement. After adding alternative geotextile reinforcement, it was found that the safety factor value increased to 1.7, where this value was greater than 1.5 as indicated by SNI 8460: 2017 article 7.5.5, while the decrease at 30 days was 1,056 cm, the decrease at 100 days was 1,056 cm, and the decline in 365 days was 1,056 cm, so it can be concluded that the embankment at that location is considered stable.
Co-Authors Adiyanwar Shidiq, Rizhal Agung Wibawa, Satria Akhbar Romadhoni , Dimas Annisa Azhar Firdausi Aski Safarizki, Hendramawat Handiana Devi, Rida