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Brick's Power Dimension Study Using Fly Ash Additive (Fly Ash) Based on SNI Wenny Dwi Tiara Ayu Syaputri; Idharmahadi Adha; Setyanto Setyanto
Jurnal Rekayasa Sipil dan Desain Vol 3, No 2 (2015): Edisi Juni 2015
Publisher : Jurnal Rekayasa Sipil dan Desain

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The bricks are made from a mixture of soil and water. In this study, the brick-making process willtry to mix the soil with additives (additive) which is fly ash brick (fly ash) to determine how muchbenefit the waste of the additive materials and compare the compressive strength of ordinary brickby brick that has been mixed with additive materials such as fly ash to achieve SNI specificationbricks that’s strong and durable.Soil sample used is a type of clay that comes from the village Yoso Mulyo, Metro. Additivematerials used are fly ash from power plants Tarahan. The variation of dimension used are 4cm x4cm x 4cm, 5cm x 5cm x 5cm, 6cm x 6cm x 6cm, 7cm x 7cm x 7cm. On dimension of 7 cm x 7 cmx7 cm the average compressive strength value is 58,46 cm 2 this is the best compressivestrength.Thus testing the bricks that have been made through the process of mixing, curing andburning, do include specific gravity test compressive strength and water absorption test. Based onthe results of physical testing of the original soil, soil samples Unified system classifies as a fine-grained soil and belongs to the group MLThe results showed that the brick-making post-combustion by using the addition of fly ash as anadditive in a mixture of brick-making material effect on the addition of compressive strengthvalues, so that the power on brick obtained in this study is quite good and meet establishedstandards of the National Standardization Agency for Indonesia (BSNI). The high value of thecompressive strength of the brick using fly ash additive materials due to reduced air volume andpore cavities in the soil particles are filled.Keywords: bricks, fly ash additive, compressive strength

Kebutuhan Material Jaringan jalan Provinsi di Provinsi Lampung Pada Wilayah 2 dan Wilayah 4 meifra wahyudi; yohanes Martono Hadi; idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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Lampung Province is a province that annually holds improvements and infrastructure development, especially in the field of roads. By the increase of the road construction, the more material needed to meet the development.This research was conducted to know the amount of material of provincial road network of Lampung province in budget year 2016 region 2 and region 4 and to get material requirement in next year.From the collection of this data, obtained the auction pattern of project implementation began in mid-year until the end of the year. And from result of calculation of material requirement of road construction project of Lampung province in 2016 got the dominant result to use Sand, Asphalt, Aggregate Coarse, and Cement. In fulfilling the material needs of the Lampung provincial road project in 2016 region 2 and region 4 is good enough, it is shown with its fulfillment of the provincial road works material in 2016. From the analysis of the calculation of provincial road material needs in 2016 can be used as a guide to face the material needs of the following year.

Korelasi Antara IRMS dan BMS di Ruas Jalan Nasional Profinsi lampung (Studi Kasus Evaluasi Pertahun Anggaran Dari Tahun 2012 Sampai Tahun 2015) Tuti Alawiya; Yohanes Martono Hadi; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 4, No 2 (2016): Edisi Juni 2016
Publisher : Jurnal Rekayasa Sipil dan Desain

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National Roads System in Lampung is the Sumatra gateway from Java to the others Provinces in Sumatra island and vice versa, and the highway as the main of development in a region that should comply the needs of the movement of traffic, among others, Fast, Convenient, Safe, Durable, and environmentally friendly. Evaluation or study was conducted to carry out the review section of the Roads System and National Bridge in Lampung based on IRMS and BMS data that is a management tool to see the condition of roads and bridge. Not affiliated between IRMS and BMS have caused the lack of evaluation on the construction and maintenance of roads and bridges on national roads in Lampung.This study aims to correlation between IRMS and BMS that the condition of roads and bridges are related, so that to taking the decision to determine the construction, periodic maintenance or routine maintenance of roads and bridges in Lampung appropriate to the real conditions by prioritizing the bridge specially the periodic maintenance.So that it can be taken a linkage that the time periode for the traffic to move from a place to the other placse is affected by the conditons of the roads and bridge. Nowadays, the result of IRMS and BMS as a benchmark that used by policy makers as a basis for determining future programs like Planning, Maintenance, and Development. While in taking decisions isn’t appropriate with the real conditions. Keywords: Correlation Between IRMS-BMS, Road and Bridge Conditions

Aplikasi hasil Eksperimen Pemadatan Tanah Untuk Konstruksi Embung Berdasarkan Metode Tekanan Eria Zundi Rahmadani; Idharmahadi Adha; Ofik Taufik Purwadi
Jurnal Rekayasa Sipil dan Desain Vol 8, No 2 (2020): Edisi Juni 2020
Publisher : Jurnal Rekayasa Sipil dan Desain

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Peningkatan akan kebutuhan air untuk irigasi maupun kebutuhan air baku, membuat Pemerintah Provinsi Lampung perlu meningkatakan insfrastruktur pada bidang pengairan atau irigasi, maka perlu dilakukan pembuatan Bendungan. Di Universitas Lampung sendiri telah di bangun Embung digunakan untuk mengatur atau menampung aliran air hujan, meningkatkan kualitas air serta dapat menjaga kualitas air tanah dan mencegah banjir. Pada dasarnya untuk membangun sebuah konstruksi sangat berkaitan erat dengan sifat fisik dan mekanis pada tanah. Hal tersebut dikarenakan tanah adalah material yang berperan sangat penting sebagai pendukung suatu konstruksi. Pada penelitian ini menggunakan dua pemadatan, yaitu pemadatan dengan menggunakan tumbukan dan pemadatan dengan menggunakan tekanan yang menggunakan standard proctor. Penelitian ini bertujuan untuk mengetahui perbandingan dengan menggunakan tumbukan dan menggunakan metode tekanan. Pemadatan dilakukan berdasarkan metode tumbukan dan tekanan. Metode tekan digunakan alat tekan modifikasi dengan tekanan 5 MPa, 10 MPa, dan 15 MPa. Dari hasil penelitian dilaboratorium dengan metode tumbukan didapatkan berat volume kering sebesar 1,7 gr/cm³. bila dikonversi terhadap uji tekan modifikasi didapatkan nilai sebesar 7 MPa. Kata Kunci : Pemadatan Metode Standard, Pemadatan Metode Tumbukan, Ydalik

Perencanaan Sheet Pile dengan menggunakan Program Plaxis (Studi Kasus : Jalan Padang Tambak – Liwa KM.227+400) Muhammad Naufal Agatha; Idharmahadi Adha; Ahmad Zakaria
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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Soil landslide is one of the most common in the field of Geotechnical due to increased shear stress of a soil mass or decrease in shear strength of the soil mass. In other words, the shear strength of the soil mass is not able to bear the burden of work going on. Disruption to the stability of the slope can be caused by various human activities and natural conditions. Unstable slopes is dangerous to the surrounding environment, therefore slope stability analysis is needed. In this case the condition of Padang Tambak – Liwa street KM.227+400 Lampung Barat experience landslide up the road. The purpose of this study is to evaluate the value of the safety factor and to plan the dimension and stability of sheet pile to the landslide on Padang Tambak – Liwa street KM.227+400 using the Plaxis v.8.2 of computer program. The result of this study obtained the value of safety factor at the initial condition of 0,7106, with displacement of 12,71 x 103 m. The handling of reinforcement slopes of sheet pile profiles of type OT26 U profile which is placed at 2,5 meters from the middle of the highway with a size of 12 meters and then replace the soil layer 1 on the outside of the sheet pile into a slope-like slope soil and reduce the slope to 32° level obtained factor value safety at 1,1532, with displacement of 145,88 x 10-3 m. Handling by reinforcing sheet pile profiles of type OT26 U profile in this condition was considered safe because it met the requirement of safety factor value and had a small displacement value.Keywords: slope stability, safety factor, plaxis, sheet pile, displacement.

PENGARUH WAKTU PEMERAMAN TERHADAP UJI KUAT TEKAN PAVING BLOCK DARI CAMPURAN TANAH, SEMEN DAN PASIR MENGGUNAKAN ALAT PENETRASI MODIFIKASI MODIFIKASI Prasetio Putro Prabowo; Setyanto Setyanto; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 2 (2017): Edisi Juni 2017
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AbstractPaving blocks are compositions of building material constructed from a mixture of Portlandcement or other similar hydrolysis, water, and aggregate or without other additives which do notruduce the quality of the material. In this research, the process of making paving blocks using amodified penetration tool in oder to improve the paving blocks quality in accordance with SNI-03-0691-1996. The soil samples tested from Kota Baru, Lampung Selatan. The amount of mixturepaving blocks was 75% of soil, 10% of sand and 15% of cement. The variation of curing time were0 days. 7 days, 14 days and 28 days as well as with pre and post burning treatment on the pavingblocks samples. The result showed that the making of paving blocks using silt with additionalmaterial of cement and sand fulfill the requirement in SNI-03-0691-1996. The addition and thecuring done could improve the physical and mechanical properties of the soil. For thecompressive strength value of the paving blocks with or without burning treatment, the best resultis shown in addition of 75% soil, 10% of sand and 15% of cement with 14 days curing time whichfulfill the requirement in SNI-03-0691-1996. The result of water absorption value which wasbetween 20,7% - 24,2% did not meet the specification in SNI-03-0691, 1996 that is 3% - 10%.Keywords : paving block, silt, compressive strength, curing time, water absorption.

Dampak Keruntuhan Jembatan Lempuyang Pada Jalan Lintas Timur dan Lintas Penghubung Provinsi Lampung Ratih Diah Permani; Yohanes Martono Hadi; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 6, No 4 (2018): Edisi Desember 2018
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The Indonesian Transportation System, which is still dominated by ground transportation, has made the road have a more dominant role in economic growth. The condition of road facilities and infrastructure also encourages economic growth among regions connected by infrastructure networks, so that it is expected that in various regions there will be equitable growth.The collapse of the Lempuyang bridge resulted in a change in the volume of traffic flow on the roads that became an alternative road. This volume change can directly affect the condition of the road designated as an alternative road, namely the eastern crossroad (Sukadana - Sp. Bujung Tenuk) and the Tegineneng Feeder - Sukadana road.The segment most affected by the damage to the Lempuyang bridge is the Central - Metro - Sukadana feeder segment. In the Central - Metro - Sukadana feeder there was an increase in the size of the slightly damaged road in May 2015 from 2014, from 2.52% to 9.03%. The value of severely damaged conditions in the Central - Metro - Sukadana feeder also increased where in 2014 it was worth 0.00% to 5.34% in May 2015. Keywords: East Cross Road, Lempuyang Bridge, Road Condition Value

Korelasi Nilai Cbr Laboratorium Modified Terhadap Tekanan pada Roda Kendaraan Alat Berat di Lapangan Berdasarkan Metode Tekanan Elisa Rahmawati Dewi; Idharmahadi Adha; Ofik Taufik Purwadi
Jurnal Rekayasa Sipil dan Desain Vol 7, No 1 (2019): Edisi Maret 2019
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AbstractIn the process of highway construction, one of main thing that should be concerned is soil material. Based on that assumptions, soil has a role as a construction material and as a placement of construction.. Therefore, one of the examination processes to discover the soil bearing capacity is California Bearing Ratio (CBR) testing. Compaction in the testing has been done within heavy vehicle pressure on field with the amounts; 2.7 MPa, 7 MPa, and 8.4 MPa and the soil sample is from Tirtayasa Area, Sukabumi, Bandar Lampung.The result testing in laboratory had been showed that the soils were classified into A-2-7 soil group that was silty sand type. CBR value without soaking process within modified proctor was 9% and for soaking condition soil was 4.2%. Modified laboratory CBR values of without-soaking condition every pressure were 5.5%, 9.4%, and 9.9%, whereas for the soaking condition were 0.77%, 2.6.5, and 3.3%. In conclusion, the values of CBR are increase as the additions of the pressure given. keywords: heavy vehicle, modified pressure’s tool, modified CBR laboratory test.AbstrakDalam pelaksanaan pembangunan infrastruktur jalan, salah satu hal utama yang perlu diperhatikan adalah material tanah. Dimana tanah memiliki peranan baik sebagai bahan konstruksi maupun sebagai tempat perletakan suatu konstruksi. Salah satu proses pengujian untuk mengetahui daya dukung tanah dasar adalah pengujian California Bearing Ratio (CBR). Pemadatan pada pengujian CBR Laboratorium dilakukan dengan metode tekanan menggunakan tekanan alat berat di lapangan yaitu sebesar 2,7 MPa, 7 MPa, dan 8,4 MPa dengan sampel tanah berasal dari daerah Tirtayasa, Kec. Sukabumi, Bandar Lampung.Hasil pengujian di laboratorium sampel tanah digolongkan sebagai kelompok tanah A-2-7 yaitu tanah pasir berlanau. Nilai CBR tanpa rendaman dengan menggunakan modified proctor adalah sebesar 9% dan untuk kondisi rendaman adalah sebesar 4,2%. Nilai CBR laboratorium modified pada masing-masing tekanan untuk kondisi tanpa rendaman adalah 5,5%, 9,4%, dan 9,9% sedangkan untuk kondisi rendaman adalah sebesar 0,77%, 2,6%, dan 3,3%. Nilai CBR mengalami peningkatan seiring dengan pertambahan tekanan yang diberikan. Kata kunci : Tekanan alat berat, alat tekan modifikasi, CBR laboratorium modified.

Analisis Desain Pondasi Rakit untuk Bangunan Bertingkat dengan Metode Konvensional Dhyna Annisa Maghfira Bahagianda; Setyanto Setyanto; Idharmahadi Adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
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The foundation of the building is usually divided into two parts: shallow foundation and deep foundation, depending on the location of hard soil and the depth ratio with the width of the foundation (D ≤ B). The foundation of this raft serves to mediate the surface of one or more columns within several lines or paths with the ground. The use of the raft foundation is used when the decline is a problem eg in soft soil. The foundation of raft becomes alternative choice seen from external factor that is implementation process which do not give impact to surrounding environment or building around it. In this study conducted data collection obtained from the results of laboratory tests in the form of data sondir results, SPT results and data in the form of load structures and field load tests and building analysis load. From the laboratory results and the subsequent building load, the calculation of the force field with the SAP 2000 program, calculate the maximum carrying capacity of the raft foundation under review, calculate the decline of the raft foundation and obtain the result of the structural requirements of the raft foundation. Based on the results of the analysis in this study found the carrying capacity of soil for raft foundation of 907.643 kN/m2. While the maximum voltage distribution at the base of the raft foundation due to the load and moment is 38.0696 kN/m2. Keywords: Raft Foundation, Bearing Capacity, Reinforcement

PENGARUH WAKTU PEMERAMAN TERHADAP UJI KUAT TEKAN PAVING BLOCK DARI CAMPURAN TANAH, SEMEN DAN PASIR MENGGUNAKAN ALAT PENETRASI MODIFIKASI MODIFIKASI prasetio putro prabowo; setyanto setyanto; idharmahadi adha
Jurnal Rekayasa Sipil dan Desain Vol 5, No 3 (2017): Edisi September 2017
Publisher : Jurnal Rekayasa Sipil dan Desain

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AbstractPaving blocks are compositions of building material constructed from a mixture of Portlandcement or other similar hydrolysis, water, and aggregate or without other additives which do notruduce the quality of the material. In this research, the process of making paving blocks using amodified penetration tool in oder to improve the paving blocks quality in accordance with SNI-03-0691-1996. The soil samples tested from Kota Baru, Lampung Selatan. The amount of mixturepaving blocks was 75% of soil, 10% of sand and 15% of cement. The variation of curing time were0 days. 7 days, 14 days and 28 days as well as with pre and post burning treatment on the pavingblocks samples. The result showed that the making of paving blocks using silt with additionalmaterial of cement and sand fulfill the requirement in SNI-03-0691-1996. The addition and thecuring done could improve the physical and mechanical properties of the soil. For thecompressive strength value of the paving blocks with or without burning treatment, the best resultis shown in addition of 75% soil, 10% of sand and 15% of cement with 14 days curing time whichfulfill the requirement in SNI-03-0691-1996. The result of water absorption value which wasbetween 20,7% - 24,2% did not meet the specification in SNI-03-0691, 1996 that is 3% - 10%.Keywords : paving block, silt, compressive strength, curing time, water absorption.

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