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Conceptual Design of Pedestrian Overpasses Bridge for Vertical Evacuation from Tsunami (POBET) in Padang City – West Sumatra Andi Syukri; Gusri yaldi; Desmon Hamid; Lukman Murdiansyah; Aufaa Rozaan; Afrina Roza
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 2 (2017): Edisi Oktober 2017
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Padang City, the most populated city in West Sumatra, is considered to have one of the world’s highest tsunami risks due to its high and close offshore thrust-fault seismic hazard, its flat terrain, and its dense population, which is mostly distributed along the coast. Current preparation for a tsunami in Padang focuses on developing early warning systems, planning evacuation routes, conducting evacuation drills, and educating the public about its tsunami risk. These are necessary, but insufficient, steps. The natural warning in Padang—strong earthquake shaking that lasts over a minute—will be the first and best indicator that a tsunami is likely to strike. It is estimated that even if evacuation begins immediately after the earthquake shaking stops, more than 100,000 inhabitants of Padang will be unable to reach high ground in less than 30 minutes—the expected time between the end of the earthquake shaking and the arrival of the tsunami wave at the shore. Based on Evaluation of Tsunami Evacuation Infrastructure for Padang, West Sumatra, Indonesia (Veronica, et.al: 2011) concluded, based upon extensive fieldwork, that Padang’s existing tsunami evacuation capacity is grossly inadequate, and that tsunami evacuation structures are essential to protect the people of Padang. To maximize their impact and effectiveness, those tsunami evacuation structures should be locally-appropriate, feasible to build and maintain, and easy to replicate. The M7.6 earthquake that struck Padang on September 30, 2009 confirmed this critical need for tsunami evacuation infrastructure. Although the earthquake did not generate a tsunami, it did cause the collapse of many buildings that had previously been identified as satisfactory evacuation structures. The earthquake also triggered massive traffic jams, stranding people in harm’s way and demonstrating why Padang needs structures that enable more people to evacuate-in-place. Finally, it needs to design new structures to accommodate people to evacuate immediately in place. Pedestrian Overpasses Bridge for Vertical Evacuation from Tsunami (POBET) will work effectively for evacuees who get traffic jam during the tsunami inundated elapsed critical hours. The most reason for POBET need to be design is a prototype for the government to combine pedestrian overpasses bridge with vertical evacuation from tsunami. These evacuation infrastructures consider about less for land use, easy to reach, compatible for any infrastructure purposes. Rely on budget and planning, POBET would design with a smallest amount budget and effortless construction process. It can be replicate by the local government to build in any place in Padang City.

Site Specific Response Analysis (SSRA) Kampus UNP Air Tawar, Kota Padang Merley Misriani; Hendra Alexander; Desmon Hamid; Aguskamar Aguskamar; Wisafri Wisafri
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 1 (2017): Edisi April 2017
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.14.1.111

In general, the seismic design provisions around the world present different criteria for local soil conditions depending on soil and rock properties to determine the design spectra representing seismic design. On the other hand, site-specific analysis results not only show the main characteristics of soil-rock profiles but also local soil characteristics where detailed studies are needed to review the earth response to earthquakes. In this study conducted Site Specific Response Analysis (SSRA) is to analyze the earthquake wave propagation from the bedrock to the surface layer. The data needed are ground stratification data and shear wave velocity parameters obtained from empirical correlation to N-SPT test drilling data. In addition, the required data is ground motion synthetic at baserocks used for the earthquake wave propagation obtained by Probabilistic Seismic Hazard Analysis (PSHA) 3-dimensional earthquake source referring from the results of previous research. SSRA is based on the theory of single-dimensional wave propagation in time domain using NERA (Non-linear Earthquake Response Analysis) program. Various inputs of earthquake movement are taken by considering suitable for Padang area. The results of this analysis are shown in the form of historical time acceleration graph and peak acceleration from each bore point location which is then processed to obtain amplification and response spectra design factors for the re-quake period of 475 years and 2475 years.

Analisis Rework Factor pada Pelaksanaan Proyek Gedung di Kota Padang Tahun 2019 Desmon Hamid; Takdir Alamsyah; yan parta wijaya; Zulfira Mirani; Oktaryan Arla Suhanda
Jurnal Ilmiah Rekayasa Sipil Vol 16 No 2 (2019): Edisi Oktober
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Suatu proyek dikatakan sukses apabila minimal memenuhi empat faktor, antara lain adalah proyek berjalan sesuai jadwal kontrak, mendapatkan keuntungan karena pengeluaran sesuai dengan yang direncanakan, masalah yang terjadi dalam proyek kecil, dan tidak terjadi kecelakaan kerja. Jika teknis yang digunakan kurang baik maka akan berdampak buruk pada kinerja proyek dan dapat menimbulkan kerugian dari segi biaya, mutu, dan waktu. Salah satu kerugian yang ditimbulkan pada pelaksanaan proyek konstruksi disebabkan oleh karena adanya pengerjaan ulang (rework). Tujuan penelitian ini adalah untuk mengetahui faktor-faktor yang menjadi penyebab rework dan faktor dominan apa saja yang menjadi penyebab rework pada pelaksanaan proyek gedung di Kota Padang tahun 2019. Penelitian ini menggunakan instrumen kuesioner yang melibatkan 22 orang responden, terdiri dari 11 perusaaan kontraktor dan masing-masing perusahaan terdapat 2 orang responden yaitu project manager dan site manager. Uji yang dilakukan meliputi uji validitas, reabilitas, korelasi Pearson Product Moment dan analisis deskriptif berdasarkan nilai mean dengan bantuan program Statistical Package for Social Science (SPSS) for Windows version 24.0. Penelitian ini mengidentifikasi 5 faktor penyebab terjadinya rework: faktor manajerial, faktor metoda pelaksanaan konstruksi, faktor material, faktor sumberdaya manusia dan faktor site conditions. Hasil penelitian menunjukkan bahwa faktor paling dominan penyebab rework adalah faktor manajerial, pada sub faktor kurangnya kerja sama tim (teamwork) sehingga hasil konstruksi tidak sesuai dengan kontrak (X1.4) dengan nilai mean 4.32 dan persentase sebesar 86.64 %.

Analisis I-Girder Baja Pada Jembatan Lengkung Horizontal Menggunakan Standar AASHTO LRFD 2012 Mukhlis MT; Desmon Hamid; Lukman Murdiansyah; B Army; Rifki Mucni
Jurnal Ilmiah Rekayasa Sipil Vol 16 No 2 (2019): Edisi Oktober
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Horizontal curved bridge is a bridge with a cross section of a curved steel I-girder that requires complex geometry and has certain requirements. which different between a straight bridge with a horizontal curved bridge that is in addition to the vertical bending effect and the shear effect is also influenced by torsional effects, lack of stability, and special constructive attention, and consideration of system behavior in the analysis. The purpose of writing this final project is to be able to do the bridge structure modeling using Midas Civil software, to design the structure of the horizontally curved steel I-girder bridge, and Obtaining the dimensions of I-Girder steel horizontally curved bridge that is able to resistance the effects of curvature and loads that work in accordance with predetermined conditions, and know the behavior of elements from horizontally curved steel I-Girder bridge. This design refers to AASHTO LRFD 2012 and design carried out namely three continuous span (42 m + 55 m + 42 m) by using two pieres. the dimensions of steel I-girder with 2000 mm girder height of 20 mm body thickness, top flange width 500 mm thickness 25 mm, and bottom flange width 600 mm thickness 40 mm. From the results of the girder design there are some of conditions which can be said to be extreme because comparison between the compressive stress with capacity almost the same, that is 99.8% at the inertia-x on maximum positive moment fatigue condition, 95% at the inertia-y on maximum positive moment strength lime state condition, and 98% the maximum positive moment Constructibility on torsion. This proves that every agreed has extreme. However, this value is still within safe limits in accordance with the standards used.

Pemanfaatan Limbah Penambangan Bukit Kapur Untuk Stabilisasi Tanah Lempung ( Clay ) Enita Suardi; Zulfira Mirani; Silvianengsih Silvianengsih; Oni Guspari; Desmon Hamid
Jurnal Ilmiah Rekayasa Sipil Vol 18 No 2 (2021): Oktober 2021
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v18i2.675

Soil stabilization by adding new materials is one of the alternatives to soil repair that can improve the properties of the soil, namely by mixing new materials and soil that is then compacted. Waste left over limestone hill mining,among others in the form of materials with various sizes of granules. This study aims to review the effect of the addition of limestone hill mining waste material on the density and value of the California Bearing Ratio (CBR) of clay soil. Tests conducted only on a laboratory scale with variations in the increase in limestone hill mining waste levels are 0%, 5%, 10%, and 15% to the total weight of the mixture. Laboratory CBR testing is performed under optimum water content conditions. The results showed that the stabilization of soft soils using limestone hill mining waste, can increase the density and value of soil CBR. The most optimal level of use of limestone hill mining waste and which provides the highest CBR value is for the addition of 5%of limestone hill mining waste with a CBR value of 26.5%.

Studi Perbandingan Pondasi Tiang Pancang dengan Pondasi Bore Pile (Studi Kasus: Pelaksanaan Pembangunan Pondasi Tower Grand Kamala Lagoon-Bekasi) Mafriyal Muluk; Desmon Hamid; Satwarnirat Satwarnirat; Dalrino Dalrino; Melia Santi
JURNAL TEKNIK SIPIL ITP Vol 7, No 1 (2020): JURNAL TEKNIK SIPIL (JTS) ITP
Publisher : LP2M ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar

Peran pondasi pada pembangunan struktur bawah pelaksanaan gedung menjadi sangat penting. Pemilihan jenis pondasi yang sesuai akan memperlancar proses pekerjaa tersebut, sehingga perlu perencanaan yang baik sehinga mendapatkan hasil secara efesien yang sesuai dengan kondisi di lapangan tertentu yang meliputi pengendalian waktu, biaya dan metode pelaksanaan. Penelitian ini bertujuan untuk mengetahui hasil perbandingan pelaksanaan pekerjaan pondasi tiang pancang dengan pondasi bore pile pada pekerjaan Pondasi Tower Grand Kamala Lagoon - Bekasi, mengidentifikasi kendala/permasalah yang sering terjadi pada pekerjaan fondasi grand kamala lagoon-Bekasi dan aspek yang paling mempengaruhi terhadap biaya dan waktu pelaksanaan. Berdasarkan analisa biaya, pondasi tiang pancang memerlukan anggaran biaya sebesar Rp. 14,047,100,000.00 (Empat Belas Milyar Empat Puluh Tujuh Juta Seratus Ribu Rupiah). Sedangkan pondasi bore pile memerlukan anggaran biaya sebesar Rp 12,736,500,000.00 (Dua Belas Milyar Tujuh Ratus Tiga Puluh Enam Juta Lima Ratus Ribu Rupiah). Selisih harga pada pekerjaan pemancangan tiang pancang sebesar 2,192,800,000.00 (Dua Milyar Seratus Sembilan Puluh Dua Juta Delapan Ratus Ribu Rupiah). Berdasarkan hasil analisa durasi, diketahui bahwa pondasi tiang pancang memerlukan waktu 114 hari, sedangkan pondasi bore pile 84 hari. Berdasarkan hasil analisa biaya dan waktu, pondasi yang paling tepat dan dapat digunakan dalam pekerjaan pada pembangunan Pondasi Tower Grand Kamala Lagoon-Bekasi adalah pondasi bore pile, karena yang pailing cocok pada aspek lingkungan dilapangan yang kawasan padat penduduk, biaya yang lebih efesien dibandingkan pondasi tiang pancang dan durasi yang lebih cepat.Kata kunci: Pondasi Tiang Pancang, Pondasi Bore Pile, Biaya, Waktu, Pondasi Tower Grand KamalaLagoon- Bekasi

Studi Perbandingan Pondasi Tiang Pancang dengan Pondasi Bore Pile (Studi Kasus: Pelaksanaan Pembangunan Pondasi Tower Grand Kamala Lagoon-Bekasi) Mafriyal Muluk; Desmon Hamid; Satwarnirat; Dalrino; Melia Santi
Jurnal Teknik Sipil Institut Teknologi Padang Vol 7 No 1 (2020): Jurnal Teknik Sipil Institut Teknologi Padang
Publisher : ITP Press

Peran pondasi pada pembangunan struktur bawah pelaksanaan gedung menjadi sangat penting. Pemilihan jenis pondasi yang sesuai akan memperlancar proses pekerjaa tersebut, sehingga perlu perencanaan yang baik sehinga mendapatkan hasil secara efesien yang sesuai dengan kondisi di lapangan tertentu yang meliputi pengendalian waktu, biaya dan metode pelaksanaan. Penelitian ini bertujuan untuk mengetahui hasil perbandingan pelaksanaan pekerjaan pondasi tiang pancang dengan pondasi bore pile pada pekerjaan Pondasi Tower Grand Kamala Lagoon - Bekasi, mengidentifikasi kendala/permasalah yang sering terjadi pada pekerjaan fondasi grand kamala lagoon-Bekasi dan aspek yang paling mempengaruhi terhadap biaya dan waktu pelaksanaan. Berdasarkan analisa biaya, pondasi tiang pancang memerlukan anggaran biaya sebesar Rp. 14,047,100,000.00 (Empat Belas Milyar Empat Puluh Tujuh Juta Seratus Ribu Rupiah). Sedangkan pondasi bore pile memerlukan anggaran biaya sebesar Rp 12,736,500,000.00 (Dua Belas Milyar Tujuh Ratus Tiga Puluh Enam Juta Lima Ratus Ribu Rupiah). Selisih harga pada pekerjaan pemancangan tiang pancang sebesar 2,192,800,000.00 (Dua Milyar Seratus Sembilan Puluh Dua Juta Delapan Ratus Ribu Rupiah). Berdasarkan hasil analisa durasi, diketahui bahwa pondasi tiang pancang memerlukan waktu 114 hari, sedangkan pondasi bore pile 84 hari. Berdasarkan hasil analisa biaya dan waktu, pondasi yang paling tepat dan dapat digunakan dalam pekerjaan pada pembangunan Pondasi Tower Grand Kamala Lagoon-Bekasi adalah pondasi bore pile, karena yang pailing cocok pada aspek lingkungan dilapangan yang kawasan padat penduduk, biaya yang lebih efesien dibandingkan pondasi tiang pancang dan durasi yang lebih cepat.

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