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Pengaruh Nilai Kohesi Tanah Terhadap Stabilitas Retaining Wall Pada Basement Gedung Bertingkat Feby Aristia Putri; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 4, No 4 (2016): Edisi Desember 2016
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This study aims to determine the stability of the retaining wall as a basement storey building in the city of Bandar Lampung. This study uses secondary data, ie, bor logs and SPT. Data on. laboratory test results are obtained from the geotehnical report.Based on the geotechnical data on the stability calculation and reinforcement retaining wall. High retaining wall is 3.25 meters with a thickness of 0.6 meters and a width 1meter (reviewed per meter). Calculation of the stability of retaining wall just reviewed against the danger of sliding and rolling hazard. As for reinforcing the retaining wall of concrete is based on ISO 2013.From the analysis, obtained the value of stability to the danger of sliding and rolling 4.8 ≥ 1.5 were declared safe retaining wall against the danger of sliding and rolling. The results of calculations on the retaining wall reinforcement, for the main reinforcement D16 - 250, shear D13 - 200, and reinforcement for D10-300. Amount of reinforcement based on the calculation is similar to the design of reinforcement used in the construction of this multi-storey building.  Keywords: retaining wall, basement, shear stability and bolsters.
STUDI EKSPERIMEN DERAJAT KEPADATAN TANAH STANDARD PROCTOR LABORATORIUM TERHADAP ALAT TEKAN PEMADAT MODIFIKASI MENGGUNAKAN TANAH TIMBUNAN PILIHAN Astri Novalia; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 5, No 4 (2017): Edisi Desember 2017
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Berhubungan dengan pembangunan infrastruktur di provinsi lampung yang berkaitan dalam bidang transportasi yaitu pembanguan Jalan Tol Lintas Sumatera yang terjadi karena peningkatan kendaraan. Oleh karena itu dalam membangun suatu konstruksi berkaitannya dengan kondisi fisik tanah, hal ini disebabkan karena tanah merupakan salah satu material yang sangat berperan penting dalam mendukung suatu konstruksi. Untuk mendapatkan tanah timbunan pilihan dengan kualitas yang baik, maka diperlukan pemadatan tanah. Maka dari itu diperlukan Penelitian untuk membandingkan besaran energy pada tanah timbunan pilihan dari derajat kepadatan tanah standard proctor terhadap alat uji tekan pemadat modifikasi Penelitian ini menggunakan sampel tanah yang berasal dari daerah Gedung Agung Kec. Jati Agung, Lampung Selatan yaitu tanah timbunan pilihan. Pelaksanaan pengujian alat tekan pemadat modifikasi dengan menggunakan tiga sampel tanah pada masing-masing tekanan, tekanan yang digunakan adalah 5 MPa, 10 MPa, 15 MPa dan 20 MPa. Hasil penelitian di laboratorium menunjukkan bahwa berat volume maksimum (γdmaks) sebesar 1,62 gr/cm3 pada pengujian tanah timbunan pilihan metode standard proctor dengan hasil pada alat tekan pemadat modifikasi didapat nilai tekanan sebesar 9 MPa. Sedangkan pada pengujian tanah timbunan biasa didapatkan nilai tekanan sebesar 7 MPa dengan berat volume maksimum (γdmaks)  sebesar 1,4 gr/cm3.
Evaluasi Diameter Partikel Tanah Terhadap Derajat Kepadatan Tanah Menggunakan Metode Tekanan R. Nofan Hendra Adyaksa; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 8, No 3 (2020): Edisi September 2020
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Soil is a material to build any infrastructure. So, soil becomes very important and influential in construction. Soil quality determine the power of construction on it, the good soil is soil that has a high density in each particles and contain less water levels. The quality of soil is depending on physic and mechanic soil condition, that’s why we need to test it out. Soil compaction is process of increasing the soil density by reducing the particles proximity so it can reduce the air volume. Compaction is divided into four types. In this research is using two types of compactions that are type A and Type C with purpose to find out the effect of soil particles diameter by passing sieve analysis to soil compaction.Compaction is done based on blow method and pressure method. In pressure method is using modification compaction tool with 5 Mpa, 10 Mpa, and 15 Mpa pressures.The result of this research can be conclude that the blow method compaction type A has a higher water content than type C, but the value of maximctum dry volume weight Type C higher than type A. In pressure method it can be concluded that as the higher pressure so the water content and the maximum dry volume weight are also getting higher.
The Effect of Soil Particles Diameter by Passing The Sieve Analysis to Soil Compaction Using The Standard Method Adira Salsabila; Idharmahadi Adha; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 7, No 2 (2019): Edisi Juni 2019
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Improving the Infrastructure development needs the soil that capable to support the load. It because soil is a material that major the role to support every construction. To identify a good soil is by doing physical and mechanical soil test. Soil compaction is process of increasing the soil density by reducing the particles proximity so it can reduce the air volume. Soil type is influencing to the maximum dry volume weight and optimum water content of that soil. Based on the soil type, compaction is divided into four types. In this research is using two types of compactions that are type A and Type C with purpose to find out the effect of soil particles diameter by passing sieve analysis to soil compaction using standard method.Compaction is done based on blow method and pressure method. In pressure method is using modification compaction tool with 5 Mpa, 10 Mpa, and 15 Mpa pressures.The result of this research is the blow method compaction type A has a higher water content than type C, but the value of maximum dry volume weight Type C higher than type A.  In pressure method it can be concluded that as the higher pressure so the water content and the maximum dry volume weight are also getting higher.Keyword:Soil Particles, Standard Method of Compaction, Blow Method and Pressure Method Compaction
ANALYSIS OF SLOPES STABILITY WITH CANTILEVER RETAINING WALLS AND GEOTEXTILE STRENGTHENING ON LIWA CROSS ROAD - INTERSECTION OF KEMALA MOUNTAIN KM. 268 + 550 Septian Adi Saputra; Idharmahadi Adha; Yohanes Martono Hadi
Jurnal Rekayasa Sipil dan Desain Vol 5, No 1 (2017): Edisi Maret 2017
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Liwa Cross Roads – Intersection of Kemala Mount KM.268 + 550 is located on the hills of TNBBS Lampung which geographic conditions consists of cliffs and ravines are quite steep, so prone to sliding. This is certainly very harmful to the building and the road users around the slopes so that necessary alternative solutions that could make the slopes safe from the danger of landslides. One way is to build reinforcement construction on a slope such as geotextiles and cantilever retaining wall. In analyzing of the slope stability used a computer program, that is SLOPE/W, is used to calculate the safety factor accurately in a short time. Existing slope stability analys with the program SLOPE/W Bishop methods in wet and dry conditions obtained value of safety factor 0.433 and 0.4. These results prove the structure of the slopes is not safe, it is needed solutions to handle slope sliding that has a stable numerical secure slope value by using woven geotextile reinforcement by the number of 16 layers, tensile capacity 200 kN/m, cohesion 3 kPa and the friction angle of the soil 38o, vertical distance 2 m and a cantilever concrete retaining wall that has a height 15 m with a specific gravity 25 kN/m3, the compressive strength of concrete plans (f'c) 30 MPa and a tensile strength steel (fy) 400 MPa. Pile soil used to improve slope geometry made to reduce the slope. The results of slope sliding stability analysis, reinforced with geotextile using SLOPE/W obtained value of safety factor 1,332, while reinforced with cantilevered retaining wall at 1.852. For the analysis of external stability by geotextiles strengthening obtained bolsters safety factor 5.9479, shear stability 3.3531 and carrying capacity 3.4815, while the cantilevered retaining wall reinforcement obtained stability bolsters safety factor 6.0643, shear stability 2.2346 and carrying capacity 3.1828. Key words: Slope stability, stability of retaining walls, Geotextile, SLOPE/W.
Pengaruh Jumlah Lapisan Tanah Terhadap Derajat Kepadatan Tanah Berdasarkan Metode Tekanan Annisa Tiara Rulya; Idharmahadi Adha; Lusmeilia Afriani
Jurnal Rekayasa Sipil dan Desain Vol 6, No 1 (2018): Edisi Maret 2018
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Pemadatan tanah merupakan salah satu pekerjaan penting dalam setiap proyek konstruksi, tanggul, waduk dan konstruksi sipil lainnya, tanah yang belum padat atau masih kondisi gembur harus dipadatkan untuk meningkatkan untuk meningkatkan kekuatan tanah, sehingga dengan demikian meningkatkan daya dukung pondasi di atasnya, serta juga berfungsi untuk mengurangi besarnya penurunan tanah yang tidak diinginkan. Untuk itu, dalam penelitian ini akan dilakukan pemadatan tanah dengan menggunakan metode standard proctor di laboratorium dan menggunakan pemodelan alat uji tekan pemadat modifikasi untuk mengetahui pengaruh jumlah lapisan terhadap derajat kepadatan tanah. Tanah yang digunakan berasal dari Tirtayasa, Bandar Lampung. Pengujian proctor menggunakan beberapa lapisan yaitu lapisan 2, 3, 4, dan 5. Sedangkan alat tekan pemadat modifikasi menggunakan tekanan 5 MPa, 10 MPa, 15 MPa. Lapisan yang digunakan yaitu lapisan 2, 4, dan 6 pada setiap tekanan. Hasil penelitian menunjukkan bahwa berat volume maksimum (γdmaks) sebesar 1,49 gr/cm3 pada pengujian metode standard proctor dengan hasil pada alat tekan pemadat modifikasi didapat nilai (γdmaks) sebesar 1,66 gr/cm3.
STUDI KONVERSI ENERGI PEMADATAN TANAH DENGAN MODIFIED PROCTOR METHOD UNTUK TANAH PASIR BERLEMPUNG Siti Zahhara Ulfa; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
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Related to increased of society economics and the growth rate of vehicles, this needs to be balanced with facilities of transportation. So, a new road or repair existing road is needed. The physical and mechanical conditions of soil are closely related to the construction. It caused the soil has a very crucial role in supporting the construction. To obtain good quality pile of soil, soil compaction is required to stabilize against both structural or non-structural loads. In this study comparing the modified proctor method soil compaction energy with modified press compactor tools.The soil samples used is from Tirtayasa Region Sukabumi District Bandar Lampung, it consists of twelve samples used for modified press compactor tools tests, with pressure used are 5 MPa, 10 MPa, 15 MPa, and 20 MPa. For every pressure conducted for 3 soil samples.Laboratory experiment result shows that the maximum volume weight (γdmaks) of 1,42 gr/cm3 amount on modified proctor method tests with the results on modified press compactor tools obtain pressure value of 7 MPa value and the pressure on sheep foot rifling machine of 6,9 N/mm2.KEYWORDS : Modified Proctor, Modified Press Compactor Tools, Compaction, Soil Pile.
STUDI PENGARUH LAMA WAKTU PROSES PEMBAKARAN TERHADAP KUAT TEKAN BATU BATA SETELAH PENAMBAHAN BAHAN ADDITIVE ISS 2500 (IONIC SOIL STABILIZER) M Thata Dinata; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 1, No 1 (2013): Edisi Maret 2013
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Brick is one of the materials of building which have been long known and used by the people bothin rural area as well as urban area. Brick is a material made of clay with or without additionalmixture through several processes. The process includes of draining in the sun and then burning inhigh temperature in order to make the brick harden and not broken if it is soaked into the water. Inthis study used clay and additional materials ISS 2500 which has a variety of levels of 0.9 ml, 1.2ml, 1.5 ml and 1.8 ml with the purpose to improving the quality of the bricks, as well as tocompare compressive strength of bricks by modifying the length of the time combustion. So thatcan be known a long time the most optimal combustion.Soil samples were tested in this study are derived from clay Nyunyai Street, District Rajabasa,Bandar Lampung. Variations of burning time is used for one day, two days and three days. Beforebrick printed, the soil sample that has been mixed with the ISS 2500 and cured for 7 days, afterthat, the soil sample is printed, then drying for 2 weeks, along with treatment without burning andburning bricks. Based on the results of physical test of originil solid, USCS classified the sampleof solid as the clay with low plasticity.Based on the results of sample’s physical, USCS classify soil sample as clay with low plasticity.Compressive strength test results of the four levels of post combustion, the compressive strengthmaximum average post-combustion bricks are at a level of 1.8 ml with a burning for two days.The compressive strength value of 31.86 kg/cm 2 . The compressive strength maximum averagebrick before combustion generated by the level of 1.8 ml in the amount of 7.79 kg /cm 2 .Keywords: bricks, clay, ISS 2500, compressive strength.
Pengaruh Waktu Perendaman Terhadap Uji Kuat Tekan Paving Block Menggunakan Campuran Tanah dan Semen dengan Alat Pemadat Modifikasi Mutiara Prestika; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 4, No 2 (2016): Edisi Juni 2016
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Paving Block is the product of a cement building materials that are used as an alternative groundcover of surface hardening. In general, paving block itself is usually made from a mixture ofcoarse aggregate (gravel) and fine aggregate (sand) with a mixture of cement and water areformed according to demand. So in this study, will provide another alternative to using a mixtureof soil and cement as well as soaking to know the effect of compressive strength.Soil samples were taken from Kota Baru, South Lampung. The mixture used is 20% cement and80% is soil, with a variation of immersion 7, 14, 21, and 28 days. Soaking were conducted withand without the combustion process to be seen compressive strength and water absorption.The result is that the compressive strength without burning has increased up to -28 immersion dayby 38.8%, while the compressive strength is experiencing burning decreased to 28 days amountedto 20.63%.Despite an increase in the sample without fuel, and a decrease in samples that undergocombustion, which produced the same compressive strength together to meet quality specificationD on SNI 03-0691-1996. Value of water absorption of pre-combustion meets the specification SNI03-0691-1996 which is 3%-10%. While with combustion does not meet due to exceed 10 %.Keys : paving block, cement, compressive strength,water absorption
STUDI PENGARUH WAKTU PEMERAMAN DAN KUAT TEKAN PAVING BLOCK DENGAN BAHAN DASAR TANAH LEMPUNG LUNAK, SEMEN DAN KAPUR MENGGUNAKAN ALAT PENETRASI MODIFIKASI rifan wiguna; setyanto setyanto; idharmahadi adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
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The use of paving blocks (concrete bricks) is widely used for various elements of building construction, on paving block work is often used for pavement road pavement, yard and public facilities, environmental roads and various other needs. This research is curing the paving block. This is intended for the maintenance of paving blocks using clay soil with lime and cement with varying curing time ie curing for 7 days, 14 days, 21 days, and 28 days with the aim of analyzing the optimum time of addictive substances ie cement and lime in Binding of particles. Based on the analysis, the cement and lime material greatly affect the value of compressive strength to paving block, at optimum curing time of 14 days, the highest value of compressive strength in post-burn samples of 12.58 Mpa and pre-burn of 6.92 MPa, with compressive strength value In the postburn sample the paving bloc now meets the quality standard c which can be applied to pedestrians based on SNI 03-0691-1996. Similarly, the results of the combustion of samples for 2 x 24 hours gained the compressive strength of the paving block is higher than the sample that is not done burning. The result of absorption value of paving block ranges from 7 - 9% hence absorption paving block fulfill specification of absorption value of paving block based on SNI 03-0691-1996 which is 3-10%.Keywords : paving block, organic clay oil, compressive strength, water absorption, brooded
Co-Authors Abdurrohmansyah Abdurrohmansyah Adira Salsabila Adit Pratama Hendri Ahmad Zakaria Alhadi Pratama Bintang Amelia Nurul Damayanti Annisa Tiara Rulya Annisa Wulansari Astri Novalia Dhyna Annisa Maghfira Bahagianda Dindha Amalia Syananta Dwi Herianto Dwi Winda Sari Elisa Rahmawati Dewi Eria Zundi Rahmadani Feby Aristia Putri Florince Florince Hadi Ali Hatwan Fardilla ikko rasita sari Lusmeilia Afriani M Thata Dinata Martha Helmahera meifra wahyudi Mohammad Yogi Alnasir Muhammad Naufal Agatha Mutiara Prestika Nur Arifaini Ofik Taufik Purwadi Ofik Taufik Purwadi Prasetio Putro Prabowo R. NOFAN HENDRA ADYAKSA Ratih Diah Permani reni sari rifan wiguna Septian Adi Saputra Setyanto Setyanto Seytanto Setyanto Siti Zahhara Ulfa Tuti Alawiya Wenny Dwi Tiara Ayu Syaputri Yohanes Martono Hadi