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INDONESIA
Jurnal Riset Rekayasa Sipil
ISSN : 25797999     EISSN : -     DOI : -
Core Subject : Social, Engineering,
The Journal of Research and Civil Engineering is a journal to accommodate the writings of researchers and professionals in the field of civil engineering.
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Articles 6 Documents
Search results for , issue "Vol 3, No 2 (2020): Maret 2020" : 6 Documents clear
PERUBAHAN KUAT GESER TANAH LEMPUNG TANON PADA METODE ELEKTROOSMOSIS DENGAN VARIASI BEDA POTENSIAL Tri Nugraheni Handayani; Niken Silmi Surjandari; Noegroho Djarwanti
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (908.944 KB) | DOI: 10.20961/jrrs.v3i2.40956

Abstract

Soft clay soil located in Kalikobok village, Tanon, Sragen is one of soil type that does not qualify to build a structural building on it, because the characters of soft clay soil that has height of water content which is causing the soil carrying capacity becomes low. In other way, if the water content is low, then it will increase the carrying capacity of the soil. Dewatering process is needed, one of the examples is by electroosmosis methods. Electroosmosis is a drainage method by force that drain the water from anode to cathode so it will fix the technical properties  of soil. In this study the variables used are the length of time of the electric current and the voltage. The variation of duration is three days and five days, the variation of potential difference that used is 0 volts, 4.5 volts, 9 volts, and 12 volts. The parameters that tested as a comparison are soil shear strength of soil at each voltage and position (anode, middle, cathode). The results showed that the greater application of potential differences can increase the values of c and φ, but the value of c at the cathode position decrease due to water accumulation at the cathode.
PENENTUAN PRIORITAS PENANGANAN KOMPONEN BENDUNGAN CENGKLIK DI KABUPATEN BOYOLALI MENGGUNAKAN ANALYTIC NETWORK PROCESS Toma Mandani; Rr. Rintis Hadiani; Cahyono Ikhsan
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (395.95 KB) | DOI: 10.20961/jrrs.v3i2.40958

Abstract

Bendungan merupakan bangunan atau infrastruktur sumber daya air yang sangat penting yang mempunyai fungsi dan manfaat untuk memenuhi berbagai kebutuhan bagi  kehidupan dan penghidupan manusia, selain memberikan manfaat  yang  demikian  besar,  perlu disadari bahwa bendungan juga mengandung potensi  resiko terjadinya bencana apabila terjadi kegagalan atau keruntuhan bendungan. Perlu diketahui bahwa banyak bendungan di Indonesia mengalami kerusakan dan penurunan fungsi, kinerja dan keandalannya yang antara lain disebabkan oleh faktor internal dan eksternal. Salah satu bendungan yang perlu diperhatikan karena faktor umur bendungan itu sendiri adalah Bendungan Cengklik. Bendungan Cengklik  dibangun  oleh  Pemerintah  Belanda  mulai  tahun  1923  dan selesai pada tahun 1931. Penilaian kondisi bendungan diperlukan untuk mengetahui tingkat keamanan bendungan dan sebagai bahan pertimbangan untuk kegiatan rehabilitasi bendungan. Berdasarkan permasalahan tersebut diatas maka perlu dilakukan penilaian kinerja Bendungan Cengklik. Metode yang digunakan pada penelitian ini adalah metode Analytic Network Process (ANP) dengan bobot skala prioritas mengacu pada Pedoman Penilaian Kondisi Fisik Bendungan serta menggunakan software Super Decision sebagai alat bantu analisis Berdasarkan hasil penilaian ANP dengan menggunakan bantuan aplikasi Super Decision, dapat disimpulkan bahwa Bendungan Cengklik memiliki nilai B, yang berarti Bendungan Cengklik memiliki kondisi rusak ringan jika nilai kondisi 80–90% dan nilai tingkat kerusakan 10–20% dari kondisi awal bangunan.
UPDATING OF SURAKARTA SEISMIC SITE CLASS MAP BASED ON STANDARD PENETRTION TEST Yusep Muslih Purwana; Raden Harya Dananjaya; Yusuf Cahyo Nogroho
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1581.19 KB) | DOI: 10.20961/jrrs.v3i2.41085

Abstract

Surakarta is one of the cities in Java island with a high population growth rate, triggering the increase in the construction, especially for high-rise buildings. The city is close to several earthquake sources, causing a high level of seismic hazard. One of the main parameters of earthquake resistant building design is the value of peak ground acceleration at surface level. It is obtained by multiplying the peak ground acceleration in the bedrock by a multiplier factor that depends on the site class conditions of the location. A previous study has been conducted in 2015 using 32 boreholes indicating that around 19.5% of Surakarta area is classified as SC (hard soil), and 80.5% of the rest is SD (medium soil). To increase the accuracy, another 31 additional boreholes data are adopted. The new result shows that Surakarta is divided into three different seismic site class. Around 4.80% the area is classified as SC (hard soil), 94.50% is SD (medium soil), and 0,70% is SE (soft soil). The southern part of Surakarta has a higher level of vulnerability to earthquakes, especially in the border area between Banjarsari, Laweyan, and Serengan subdistricts which have a SE (soft soil) seismic site class.
FAULT TREE ANALYSIS DAN AUDIT AKURASI PADA PENERAPAN SISTEM MANAJEMEN KESELAMATAN KERJA KONSTRUKSI TERINTEGRASI Studi Kasus: Proyek Pembangunan Gedung Pelayanan (Fisik) RSUD Tidar Kota Magelang, Kontraktor B1 Alvian Purbiantoro; Adwitya Bhaskara
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (177.541 KB) | DOI: 10.20961/jrrs.v3i2.40952

Abstract

Building a construction project is an activity which contains many dangerous elements.  It causes the construction industries have bad record in the terms of occupational safety.  Therefore, occupational safety is an aspect that must be improved any time because it is a very complex problem which covers issues in the terms of humanity, legal aspect, accountability and the image of the organization itself.  This study aims to (1) Determine the accuracy level of the Occupational Safety Management System Application in the Service Building (physical) Construction Project in Tidar Regional Hospital (RSUD) Magelang, (2) Identify and analyze the potential risks of work accident by using Fault Tree Analysis (FTA) method and planning mitigation to reduce the scope of construction in progress. This study is a quantitative analysis where the research is conducted by collecting the primary data through interview and observation, meanwhile the secondary data is in the form of data from the project itself. FTA is used to investigate the potential of workplace accidents by analyzing the direct causes to the basic causes of the accident itself.  The results of the study show that (1) The accuracy level of the application of Occupational Safety Management System which has been applied has an assessment rate of 97.29% and it is included in the level of satisfactory assessment.  (2)  The results of the analysis using FTA obtained several incidents that potentially can cause workplace accidents, incidents such as the workers who do not wear personal protective equipment, workers who act carelessly, and the lack of work experience are the frequent cases in the basic FTA incidents.
PENGARUH PERKUATAN TIANG TERHADAP STABILITAS TIMBUNAN DIATAS TANAH LUNAK MENGGUNAKAN METODE ELEMEN HINGGA Bambang Setiawan; Raden Harya Dananjaya H.I.; Muhammad Fathurrahman
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (217.978 KB) | DOI: 10.20961/jrrs.v3i2.40953

Abstract

Pile strength is widely used as a solution to the problem of road pavement on soft soil, because it can reduce vertical displacement due to the load on it and increase the safety factor value. This research analyses the vertical displacement, safety factor, effective stress and bearing capacity of the embankment on soft soil using the finite element method so the results can approach the original conditions in the field. The pile variations used are pile size variations 20x20 cm2; 25x25 cm2; and 30x30 cm2 with a square shape, variations in the distance between the piles 1,60 m; 1,80 m; 2,00 m; and 2,20 m, the depth variations 15,00 m; and 20,00 m. Loading uses truck loads based on RSNI T-14-2004 and the road classification is artery IA. The results of the analysis show that pile strength with a size 20x20 cm2, the distance between pile is 1,60 m and the depth of the piles 20 m can reduce the vertical displacement by 71,31% and increase the safety factor by 123,25%.
PENGARUH AIR LAUT PADA MASA PERAWATAN TERHADAP INFILTRASI ION KLORIDA PADA BETON DENGAN PENAMBAHAN FLY ASH 12,5% Laras Ari Indriyanto; Ashar Saputra; Djoko Sulistyo
Jurnal Riset Rekayasa Sipil Vol 3, No 2 (2020): Maret 2020
Publisher : Prodi Teknik Sipil FT Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.817 KB) | DOI: 10.20961/jrrs.v3i2.40955

Abstract

The use of concrete material which dominates Indonesian construction industry is not only because its compilers are easy to get, but also because it has high durability. Anyhow, concrete structure might have high risk of damage in aggressive region and open space. Sulfate attack will form calcium sulfoaluminate where the volume of calcium aluminate is higher than concrete’s, so its volume increases and damages the connection between aggregate and cement which work as bonding. One of applicative and easy-to-get technology in preventing the effect of sulfate attack is by using additional material, pozzolan. It consists of fly ash and Blast Furnace Cement BFC which come from iron ore refining process. This research aims at finding out the effect of sea water in immersion phase and age variation towards compressive strength, split strength, flexural tensile strength and concrete permeability as well as the depth of chloride ion infiltration in normal concrete by adding fly ash. Chloride ion infiltration testing is done by soaking 150x150x150 mm cube using sea water with various period for 28, 60 and 90 days and then it will be sprayed by AgNO3 solution to know the depth of absorbed chloride ion infiltration. Chloride ion infiltration of concrete using sea water happens in 0-1.4 cm depth up to 90 days management. The addition of fly ash 12.5% makes the depth of chloride ion infiltration become smaller than using OPC for each immersion age variation.

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