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KAJIAN PEMILIHAN PEKERJAAN BASEMENT PADA BANGUNAN BERTINGKAT TINGGI MENGGUNAKAN METODE TOP DOWN SEBAGAI INOVASI METODE PELAKSANAAN (STUDI KASUS : PROYEK SUDIRMAN SUITES HOTEL AND APARTMENT JAKARTA) Nopirin Abliataniaga Bintang; Mahayekti Bagaskara; M. Agung Wibowo; Arif Hidayat
Jurnal Karya Teknik Sipil Volume 3, Nomor 4, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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This paper explains on studies of top down basement construction method on high rise building as innovation of construction method. Nowadays, in the world of construction there are varies of innovations; one of them is top down method for basement construction. Sudirman Suites Hotel and Apartment is a project of 22 levels building and 5 levels of basement located in the middle of large city where there are already many buildings and activities surrounding. PT. Wika Gedung as a main contractor decided to apply top down method for 5 levels of basement with 24,4 m deep. As comparation there is Menara Sentraya project on Blok-M, which conventionally constructed with bottom up method. This research uses Sudirman Suites Hotel and Apartment’s site manager’s correspondency as primary data. Shop drawings, proposed budget, time schedule and site plan for the secondary data. Data analyzation method is to compare primary data on both project and uses secondary data for validation. Main reason for top down method for basement construction is the limited project area, only 4792.331 m2 and 2769.15 m2 for the excavation zone, moreover, open cut is not feasible to excavate 24,4 m deep without any reinforcements.

PERILAKU CLAY SHALE FORMASI KEREK DESA KANDANGAN KECAMATAN BAWEN KABUPATEN SEMARANG Muhammad Deria Raharja Malik; muhammad Irsad; Kresna Wikan Sadono; Bambang Pardoyo
Jurnal Karya Teknik Sipil Volume 7, Nomor 4, Tahun 2018
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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AbstrakClay shale merupakan kelompok batuan sedimen yang sangat rentan terhadap perubahan lingkungan. Hal tersebut dapat menimbulkan masalah jika clay shale ter-ekspose akibat pemotongan lereng. Penelitian ini bertujuan untuk mengetahui perilaku dari clay shale, dengan munghubungkan berbagai parameter pengujian serta mengetahui kemiringan aman pemotongan lereng. Pengujian yang dilakukan pada penelitian ini mencangkup penelitian sifat fisis, sifat mekanis dan ketahanan batuan. Hasil pengujian sifat mekanis melalui uji tekan bebas (Unconfined Compression Strength) didapatkan nilai kuat tekan (compressive strength) berkisar antara 803,36 kN/m2 – 2164,48 kN/m2, durabilitas batuan (Slake Durability) termasuk dalam klasifikasi very low durability, pengembangan bebas (free swelling) didapatkan nilai pengembangan dengan kategori sedang dan keamanan lereng berada pada rentang antara 3H:1V – 8H:1V. Penelitain ini dapat disimpulkan bahwa clay shale Desa Kandangan merupakan lempung plasitisitas tinggi dengan nilai free swelling sedang, durabilitas sangat rendah, dan kemiringan antara 13,6%- 21,9 %.

Kontribusi Sertifikasi SDM Konstruksi Terhadap Kegagalan Konstruksi Dan Kegagalan Bangunan Studi Kasus Provinsi Jawa Tengah dedy Ardiansyah; Hasmi Nailul; Jati Utomo Dwi Hatmoko; Frida Kistiani
Jurnal Karya Teknik Sipil volume 1, Nomer 1, tahun 2012
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Abstrak - Salah satu faktor utama penyebab kegagalan konstruksi dan kegagalan bangunan adalah faktor SDM. Maksud penelitian ini adalah untuk mengetahui besar kontribusi pekerja konstruksi tersertifikasi, terhadap kegagalan konstruksi dan kegagalan bangunan. Penelitian ini memetakan besar prosentase SDM konstruksi yang tersertifikasi di Jawa Tengah, dan korelasinya terhadap kegagalan konstruksi dan kegagalan bangunan. Data pekerja konstruksi tersertifikasi didapatkan dari LPJKD Provinsi Jawa Tengah, sedangkan data jumlah seluruh pekerja konstruksi di Jawa Tengah didapatkan dari BPS. Data kegagalan konstruksi dan kegagalan bangunan didapatkan dari media massa online di Jawa Tengah. Hasil penelitian menunjukkan bahwa dari 178 kegagalan di Jawa Tengah, sebanyak 105 kegagalan (59%) didominasi oleh kegagalan pada struktur jalan. Rata-rata pekerja konstruksi yang tersertifikasi di Jawa Tengah yaitu sebesar 5,3%. Pada penelitian ini sebesar 30,7% kegagalan pada industri konstruksi dipengaruhi oleh variabel pekerja yang tersertifikasi, sedangkan lainnya disebabkan oleh variabel lain yang tidak diteliti. Pada uji korelasi didapatkan nilai sebesar-0,55. Hasil tersebut menunjukkan bahwa korelasi cukup atau berpengaruh, yaitu semakin besar pekerja konstruksi yang tersertifikasi di Jawa Tengah, maka peluang kegagalan konstruksi dan kegagalan bangunan akan semakin kecil. Untuk itu pemerintah melalui LPJKD Jawa Tengah, perlu melakukan pembinaan terhadap berbagai elemen masyarakat yang bekerja pada industri konstruksi tentang pentingnya sertifikasi pada tenaga kerja konstruksi. Kata Kunci : sertifikasi, kegagalan konstruksi, kegagalan bangunan, sertifikat keahlian (SKA), sertifikat keterampilan (SKT), SDM Konstruksi. Abstract - One of the main factors causing the construction failure is human factor. The purpose of this research is to investigate the contribution of construction workers who are certified toward the construction failure. This research is to map construction human resources who are certified in the Central Java Province, and to quantify its correlation with the construction failure. Data of the certified construction workers, the total number of construction workers in Central Java, and the construction failure data, was obtained from Construction Service Development Board (LPJK) in Central Java Province, Central Beuraw of Statistic (BPS), and from the mass media in Central Java. The results showed that of 178 failures in central java 105 (59%) are dominated by the structural failure of road project. The average construction worker are certified in Central Java is equal to 5.3%. In this research 30,7% failures in the construction industry is affected by variable of certified workers, while the other are caused by other variable not examined. The correlation value between construction workers certified toward construction failure is -0,55, which indicate a relationship. Its necessary for government with Construction Service Development Board (LPJK) in Central Java to educate actors in the construction industry on the importance of certification in the construction workers. Keywords: certification, construction failures, failure of the building, a certificate of the (SKA), a certificate of skills (SKT), human resources of construction workers.

ANALISA PERCEPATAN PROYEK METODE CRASH PROGRAM STUDI KASUS: PROYEK PEMBANGUNAN GEDUNG MIXED USE SENTRALAND Restu Rama Bayu Adi; Devinta Elga Traulia; M. Agung Wibowo; Frida Kistiani
Jurnal Karya Teknik Sipil Volume 5, Nomor 2, Tahun 2016
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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When the implementation of construction projects, there are several barriers that are often experienced and can cause delays. According to Presidential Decree No. 54 of 2010 delays can incur a penalty of 1/1000 of the contract price. Delays can be taken to help accelerate the work. Scheduling a project conceived for the target specified time can be achieved. Scheduling has a series of activities related and have a total duration of the longest (critical path). Crash program is a way to accelerate the estimated costs required to reduce the time work on the critical path. Calculation begins with finding the critical path then perform crashing to obtain cost slope. Mixed Use Building Project Sentraland delayed, the author wants to analyze the time and cost of accelerating the work with method of program crashes. The normal duration for the structure 7 to Floor Roof Floor Level (Floor RL) is 203 days, at a cost of Rp 36,718,664,136. The acceleration process is divided into three (3) scenarios. Scenario 1 Job Fields with crashing duration of 191 days and costs Rp 36,907,386,256, Scenario 2 Plates Works Floor and Beam with a duration of 188 days and costs Rp 37,759,094,653, Scenario 3 Employment Column, Plates Floor and Beam with a duration of 176 days and cost Rp 37,930,808,077. Of the value of cost slope and a graph of cost and time, acceleration is obtained optimum point Scenario 1

PEMANFAATAN LIMBAH AMPAS TEBU SEBAGAI PENGGANTI FILLER UNTUK CAMPURAN ASPAL BETON JENIS “HOT ROLLED SHEET– WEARING COURSE“ Fajar Himawan Wijanarko; Moh. Bachtiar Mulia; YI. Wicaksono; Djoko Purwanto
Jurnal Karya Teknik Sipil Volume 2, Nomor 2, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Highway pavement in Indonesia generally use a mix asphalt concrete as a surface layer consisting of a mixture of constituent materials coarse aggregate, fine aggregate, filler and bitumen. HRS is a mixture suitable for use in tropical areas like Indonesia because it has high elasticity and resistance to fatigue plastic (Rantetoding, 1984). HRS mixture consists of coarse aggregate, fine and asphalt. Fine aggregate form filler, which is necessary to fill voids between the aggregate particles so as to increase the density of the mixture. In general filler used is stone ash, stone ash filler but is relatively expensive, so it is necessary to find other alternatives to the use of cheaper materials for filler substitutes standard. One of the waste materials that can be used is the waste from sugar mills bagasse. Refiners produce waste in the form of bagasse, the percentage content of chemical compounds (Silica) on bagasse ash was 70.94% which is expected to improve the quality of asphalt mix. The purpose of this research is to determine the performance of asphalt concrete type of HRS-WC when using bagasse ash filler compared with stone ash filler, with the goal of getting an alternative filler in the form of bagasse ash. Test characteristics of aggregate, filler and bitumen done before making Marshall specimens to determine whether the materialis qualified or not as asphalt mix material. This study refers to the Spesifikasi Umum Bina Marga 2010, of the Directorate General of Highways. The results showed the test aggregate, filler and bitumen, as well as all the HRS-WC mixed with bagasse ash filler and stones ash filler qualify. The use of bagasse ash filler mixed with HRS-WC increasing bitumen content is 6.95%, resulting in values, VIM: 5.96%, VMA: 21:36% and VFB: 72.12%, is higher than the HRS-WC mixture using stones ash filler that is 6.75%, with a value of VIM: 5.95%, VMA: 20.64% and VFB: 71.68%. In addition to the value of bagasse ash filler Stability: 1231.07 Kg, Marshall Quotient: 260.58 Kg / mm and flow: 4.72 mm being lower than the value of Stability: 1280.98 Kg, Marshall Quotient: 268.97 Kg / mm and flow: 4.76 mm in stone ash filler. This suggests that the HRS-WC mixture using bagasse ash filler bitumen requires more than the HRS-WC mixture using stone ash filler. From the results of this analysis indicate that the use of bagasse ash filler mixed with HRS-WC to qualify as an alternative filler materials stone ash, so that the bagasse ash can be used for asphalt concrete mix HRS-WC, in which the results are not much different from mixed HRS-WC using stone ash filler.

PERENCANAAN DERMAGA PELABUHAN RAKYAT SAMBER, PAPUA Clara Devina; Bondan Kristi; Priyo Nugroho; Sriyana Sriyana
Jurnal Karya Teknik Sipil Volume 6, Nomor 4, Tahun 2017
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Transportasi laut merupakan sarana penting dalam menunjang perekonomian dan pemerataan kesejahteraan masyarakat di wilayah-wilayah terpencil di Indonesia. Samber yang terletak di Disitrik Yendidori, Kabupaten Biak Numfor, Provinsi Papua adalah salah satu daerah yang belum memiliki sarana perhubungan laut yang memadai. Hal ini menjadi salah satu penghambat perkembangan ekonomi yang perlu diperhatikan. Dalam rangka menunjang perkembangan ekonomi di Samber, maka perlu dilakukan perencanaan dan pembangunan fasilitas pelabuhan untuk menunjang pelayanan transportasi laut di daerah tersebut. Dermaga Pelabuhan Rakyat ini dibangun di sisi selatan Samber. Perencanaan dermaga tersebut menggunakan data angin tahun 1999-2017 dengan metode peramalan gelombang SMB, data gelombang dengan periode ulang 50 tahun dan data pasang surut selama 29 hari yang dianalisis menggunakan metode Admiralty. Pemodelan gelombang dilakukan dengan program Mike21. Data kapal pelayaran rakyat yang digunakan untuk perencanaan dermaga, yaitu kapal ikan dengan bobot 100 GT digunakan sebagai acuan dalam menentukan dimensi dermaga. Dalam perencanaan struktur dermaga ini, perhitungan struktur dianalisis dengan menggunakan program SAP2000. Perhitungan untuk perencanaan pondasi menggunakan metode Meyerhof, Vesic dan Brom. Dari hasil perencanaan layout ditentukan panjang pier 51 m dengan lebar 7 m yang dihubungkan dengan trestle sepanjang 65 m dengan lebar 5 m, serta causeway dengan panjang 3 m dan lebar 5 m. Dari hasil analisis struktur dan perhitungan direncanakan balok dengan dimensi 300 x 500 mm, plat lantai dengan tebal 300 mm, pile cap dengan tebal 800 mm, dan tiang pancang menggunakan pipa baja JIS A5525 SKK490 dengan diameter luar 350 mm. Sedangkan hasil perencanaan untuk causeway, menggunakan 2 lapis struktur rubble mound dengan berat batuan berkisar 17,7 kg. Pada perencanaan struktur sandar, yang digunakan adalah fender SLP Type V 150H 2000L, serta struktur tambat yang dipakai adalah bollard dengan kapasitas 15 ton. Biaya yang direncanakan untuk pembangunan dermaga Samber yaitu sebesar Rp. 13.403.064.000,00.

ANALISIS BOTTLENECK DAN CHARGING COST PADA PEMBUATAN TIANG PANCANG PT. WIKA BETON PPB BOYOLALI Angga Dwi Setiawan; Novan Fahlevi; Bambang Riyanto; Rudi Yuniarto
Jurnal Karya Teknik Sipil Volume 4, Nomor 1, Tahun 2015
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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To be competitive in the market competition, then a company is required to be able to work without defects, especially in the production process, especially in terms of time, but in the process of production of the most common problem is the bottleneck. In addition, the process of making the finished product, if the consumer is too long to take the goods orders will certainly lead to additional cost for the manufacturer (PT. WIKA Beton Boyolali). Therefore, it is necessary to charge to cover the cost calculation the amount of cost / additional costs. The purpose and goal of this study was to maximize the production of piling PT. WIKA Beton Boyolali, as well as reducing the amount of losses arising from the cost / surcharge. Bottleneck determination made by the method of calculation of standard time each work station, while charging for the cost calculation performed by three methods: Base On Plan, Mixing Pile, Base On Demand. From the results of the analysis showed that the bottleneck is at the work station spinning, and to reduce the bottleneck distasiun the work can be done by adding the spinning tool and also the addition of workers / operators. While charging the cost of the analysis showed that of the three methods used, the most effective method is a method Charging Cost Base On Mixing Pile. It is expected to cost charging system is then the consumer can pay more attention to pick up their order as soon as possible when the order finished goods.

EVALUASI WASTE MATERIAL PADA PROYEK BERBASIS KONSEP GREEN CONSTRUCTION DAN PROYEK KONVENSIONAL Rachmawati Edy Lestari; Khanif Ragil Pamungkas; Arif Hidayat; Frida Kistiani
Jurnal Karya Teknik Sipil Volume 2, Nomor 4, Tahun 2013
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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The fact that construction causes negative impact to the environment such as degradation of environmental quality that caused by the increasing of waste volume produced by construction activity. Based by research around the globe, it is said that more than 50% of waste are produced by construction activity (Wulfram Ervianto, 2012). The increasing of construction waste comes from a construction process. If large amount of construction waste produced, so analogically the natural resources that exploitated has a large of amount of volume either. So it needs a right management to overcome by appliying a responsible construction process so that the waste that produced will be decreased. In its development, that construction process is known as green construction. This research will discuss about the comparison between the amount of waste that produced during the processing of the 1st and 2nd floor of upper structure work between green construction and conventional project based on implementation method applied by each project. Research method used such that qualitative method with description and data derivation by direct observation and interview on field with case study of construction project of Mataram City Yogyakarta Hotel and Apartment with PT. Pembangunan Perumahan (Persero) contractor as an object of green construction project and Hotel 101 Yogyakarta one with PT. Bintang Sewu Sejahtera as an object of conventional project. From the observation result, the fact that waste on green construction project is considerably less than conventional is obtained, that is with percentage of bar reinforcement waste 0.54%, wood/plywood 4.85%, and concrete 0%. It shows that selecting the implementation method and waste management precisely can decrease material solid waste.

ANALISIS PENGARUH PENGEMBANGAN KAWASAN INDUSTRI CANDI TERHADAP BANJIR SUNGAI BRINGIN Erlyanto Eko Kurniawan; Rifqi Aditya Halimawan; Dwi Kurniani
Jurnal Karya Teknik Sipil Volume 6 ,Nomor 1, Tahun 2017
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Pengembangan Kawasan Industri Candi yang berada di Kota Semarang yang dibuat dengan melakukan pengeprasan bukit dan menyebabkan perubahan tata guna lahan di sekitar lokasi pengembangan secara signifikan. Hal ini berdampak salah satunya pada meningkatnya debit banjir di sungai yang terkena dampak pengembangan, salah satunya adalah Sungai Bringin. Intensitas dan frekuensi banjir di Sungai Bringin dari tahun ke tahun selalu meningkat sejak terjadinya banjir pada tahun 2010.Salah satu penanganan yang dapat dilakukan akibat meningkatnya debit banjir ini adalah dengan membuat detention pond. Analisis debit banjir dilakukan pada kondisi eksisting dan kondisi setelah pengembangan. Debit banjir yang akan di tangani adalah debit banjir dengan periode ulang 50 tahun. Metode yang digunakan untuk menganalisis adalah Metode Rasional dan Metode HSS Gama 1. Hasil dari kedua metode tersebut kemudian dibandingkan dan diambil yang terbesar. Selisih volume banjir pada kondisi setelah pengembangan terhadap kondisi eksisting akan ditampung dengan detention pond. Desain dari detention pond yang direncanakan adalah tipe long storage, yaitu berupa tampungan memanjang di badan sungai. Long storage ini dipilih guna memaksimalkan kapasitas tampungan di palung palung Sungai Bringin serta meminimalkan pembebasan lahan masyarakat.Studi penelitian ini dilakukan dengan tujuan untuk mengetahui peningkatan besarnya debit banjir akibat pengembangan Kawasan Industri Candi serta memberikan penanganan terkait peningkatan debit banjir tersebut. Pemilihan detention pond sebagai bentuk pengendalian banjir dikarenakan dapat menampung volume air dari debit banjir dengan memanfaatkan kapasitas tampungan di palung palung sungai tanpa pembebasan lahan masyarakat. Volume yang tertampung dapat mengurangi banjir yang terjadi di hilir DAS Bringin, sehingga debit banjir di hilir tidak akan mengalami peningkatan atau memenuhi delta-Q zero principle.

ANALISA DAN PERENCANAAN PENINGKATAN JALAN ALTERNATIF MANYARAN – MIJEN Bima Prahar Aldilase; Sahil Riskie Tamara; Moga Narayudha; Wahyudi Kushardjoko
Jurnal Karya Teknik Sipil Volume 3, Nomor 1, Tahun 2014
Publisher : Departemen Teknik Sipil, Fakultas Teknik Universitas Diponegoro

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Semarang city as a center of activity will always face problems which require the movement of vehicles and infrastructure facilities. Therefore need to model the movement on route choice in urban road network. By knowing the route choice models can be seen in the new alternative road network which is parallel to and travel time / travel costs are lower , then the riders tend to use the new road. In this study conducted at Mijen area road network. Road Manyaran – Mijen is one of the most important because of it’s function as a alternative road that connects subdistrict Manyaran with subdistrict Mijen. The results of the Analysis and Upgrade Design Alternative Road Manyaran – Mijen with 10 years design life, the value of the existing DS (Degree of Saturation) = 0,75, therfore it must improve the road by widening of 6 meters to 7 meters by 2 meters shoulder (2/2UD) and overlay. And also change the area of flexible pavement fracture with rigid pavement. From the analysis and planning of road improvement Manyaran - Mijen obtained results in the form of construction of the widening of 6 metres to 7 metres and composition of pavement construction for widening Laston height of 10 cm, 15 cm crushed stone class B (CBR 80 %), 20 cm gravel class B (CBR 50 %). While the overlay calculation showed 12 cm (Laston). For planning drainage (channel edge), the form used is rectangular channel. Plan budget for road planning Manyaran - Mijen This is Rp 72.518.550.000,00.

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