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Mafriyal Mafriyal
Jurusan Teknik Sipil, Politeknik Negeri Padang
Civil Engineering, Building, Construction & Architecture Education

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Faktor Penyebab Kegagalan Akibat Keterlambatan Proyek Konstruksi Pada Bangunan Gedung di Kota Padang Riswandi, Riswandi; Natalia, Monika; Mafriyal, Mafriyal
Jurnal Ilmiah Rekayasa Sipil Vol 15 No 1 (2018): April 2018
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.85 KB) | DOI: 10.30630/jirs.15.1.89

Abstract

Keberhasilan proyek adalah tujuan akhir yang utama dari setiap pelaksanaan proyek konstruksi gedung. Perbedaan keberhasilan proyek disebabkan karena tiap proyek mempunyai faktor-faktor pengaruh yang berbeda-beda. Ada kalanya proyek tidak berjalan lancar sesuai perencanaan awal. Hal ini disebabkan oleh banyak faktor, seperti faktor alam, faktor tenaga kerja, lokasi, material, koordinasi, administrasi dan lain-lain. Faktor-faktor tersebut dapat menjadi permasalahan atau kendala yang menyebabkan tidak lancarnya pelaksanaan proyek konstruksi. Padahal proyek konstruksi harus memenuhi tiga criteria yaitu mutu, biaya, dan waktu (triple constraint) sesuai dengan yang telah ditetapkan.Oleh karena itu, semua pihak yang terlibat dalam proyek konstruksi gedung (owner, konsultan, kontraktor) harus mengetahui faktor-faktor penyebab kendala selama pelaksanaan proyek konstruksi gedung. Dengan diketahuinya faktor-faktor ini, semua pihak yang terlibat dapat menentukan solusi/strategi apa yang harus dilakukan untuk menangani masalah yang timbul di lapangan selama pelaksanaan proyek konstruksi. Dengan diketahui dari awal, dapat diantisipasi sedini mungkin semua kendala/permasalahan yang timbul, dan tidak akan ada pihak yang dirugikan.Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor penyebab kendala kegagalan yang disebabkan oleh keterlambatan pelaksanaan proyek konstruksi di Kota Padang Sumatera Barat. Metode Penelitian yang digunakan analisis deskriptif menggunakan quisioner dengan data proyek konstruksi yang sedang atau sudah dikerjakan di Sumatera Barat. Adapun respondennya adalah project manager, site manager.Dari quisioner yang dilakukan pengujian data dengan menggunakan SPSS. Pengujian data meliputi uji validasi, uji reliabilitas,uji normalitas uji korelasi,dan uji analisa diskritif. Adapun tujuan dari penelitian ini adalah untuk mengetahui faktor dominan penyebab kendala proyek konstruksi di Kota Padang adapun faktor dominan pada pengujian ini yaitu pada subfaktor jadwal penggunaan material yang terperinci dan tepat waktu (material’s schedule) dengan nilai mean 3,55 atau 87,50 % . Hasil penelitian ini nantinya diharapkan dapat sebagai bahan masukan/pertimbangan dalam mengambil kebijakan untuk semua pihak yang terlibat dalam pelaksanaan proyek konstruksi agar tercapai keberhasilan proyek.
Analisis Variabel-Variabel Risiko pada Pelaksanaan Proyek Konstruksi Jalan Hidayati, Rahmi; Natalia, Monika; Adibroto, Fauna; Mafriyal, Mafriyal; yurisman, yurisman; Saskia, Rizkina
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 2 (2017): Oktober 2017
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.549 KB) | DOI: 10.30630/jirs.14.2.106

Abstract

This research aims to identify the risk variables that ever occurred while executing of road construction project. In addition, it is to identify how significant and how big the influence of risk variables to the articulation of project execution processes of a road construction project, based on questionnaire that distributed to 30 questionnaires who are project managers and site managers on contractors of road construction project. From the research data, there were identified 14 risk variables with 84 risk sub-variables on execution of road construction project. Those 14 risk variables were natural, social, politic, economic, law, occupational safety and health, managerial, technical, cultural, logistic, condition around construction site, design and technology, labor, and contractual variables. From the data analysis by using SPSS version 16, obtained there were 14 risk sub-variables which became the most influential sub-variables (indicators) to the road construction project. All sub-variables on the questionnaire are valid and reliable. The results of this research is expected to be considered for all parties involved in the construction project to pay more attention to risk variables during the execution of road construction project.
Evaluasi Kapasitas Eksisting Sungai Batang Mangor di Hulu Bendung Ladang Laweh Dengan Peningkatan Debit Banjir Rencana 25 Tahun Hartati, Hartati; Dalrino, Dalrino; Sari, Desnila; Mafriyal, Mafriyal; Hanwar, Suhendrik; Sadtim, Sadtim; Desvani, Maulia; Putri, Nadhia Hanifah
Jurnal Ilmiah Rekayasa Sipil Vol 21 No 2 (2024): Oktober 2024
Publisher : Pusat Penelitian dan Pengembangan Masyarakat (P3M), Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jirs.v21i2.1611

Abstract

Ladang Laweh Irrigation District Dam is located in Sicincin nagari, Padang Pariaman Regency with an irrigation service area of 1,140 Ha. The Ladang Laweh Irrigation Area weir receives flow from the Batang Mangor river which is included in the Batang Mangor watershed. On September 22, 2021 a flood occurred on September 22, 2021 resulting in an overflow with a height of 2.5 m above the lighthouse with an estimated discharge of 141.946 m3 /dt resulting in runoff flow in the area upstream of the bending. Analysis of the capacity of the existing river upstream of the weir was carried out with a 25-year plan flood discharge. Modeling is done by analyzing 15 years of rain data and catchment area starting from the location point of the weir upstream. The validation results under full bank capacity conditions obtained the closest match to the theoretical flood discharge value of the Nakayasu method. The simulation results show that the existing cross section of segments P1 to P19 at the Korong Gadang location is inundated during flood events with river capacity in several locations exceeding the maximum capacity. The results also provide recommendations for flood management by suggesting the addition of river embankments at locations that experience inundation.
PERBANDINGAN BIAYA PEMBANGUNAN RUMAH SEDERHANA DENGAN RUMAH KONSEP AMAN GEMPA BERDASARKAN ANALISA BENEFIT COST RATIO SKENARIO GEMPA 50 TAHUN Natalia, Monika; Mirani, Zulfira; Mafriyal, Mafriyal; Sari, Desnila; Hanum, Riska Fauziah
Jurnal Ilmiah Poli Rekayasa Vol 19, No 2 (2024): April
Publisher : Pusat Penelitian dan pengabdian kepada Masyarakat (P3M) Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jipr.19.2.361

Abstract

In mitigation to minimize the risk of earthquakes, protection is needed to reduce the impacts. Damage caused by earthquakes can be minimized by planning and building earthquake-resistant houses. To get an earthquake-resistant house, by adding earthquake-strengthening components based “Pedoman Teknis Rumah dan Bangunan Gedung Tahan Gempa and SNI 1726-2019”. This research aims to design earthquake-resistant houses concept for an earthquake period of 50 years and analyze the benefit-cost ratio by comparing residential houses designed with earthquake-safe features to conventional residential houses. The concept of earthquake-resistant houses is carried out in conventional type 120 residential houses. The research results that the cost for a conventional residence is IDR 387,223,000 and the cost of an earthquake house concept is IDR. 407,593,000, where there is a cost difference of IDR 20,370,000 or 5% (more expensive). Benefit-cost ratio value for conventional residential houses for the 50-year earthquake scenario is 0.64; 0.71; 0.77; 0.82; and 0.87 where the value of BCR <1, then this residential house is not effective in facing a 50-year earthquake scenario. Benefit-cost ratio for earthquake-safe housing was 1.12; 1.34; 1.58; 1.84; and 2.09. The BCR>1 and the value moves up until the 50th year. So with an additional cost of 5% for earthquake-safe features, this house is considered very effective for the 50-year earthquake period scenario.
Co-Authors Dalrino Dalrino Desvani, Maulia Fauna Adibroto Hanum, Riska Fauziah Hartati Hartati Natalia, Monika Putri, Nadhia Hanifah Riswandi Riswandi RR. Ella Evrita Hestiandari Sadtim Sadtim Sari, Desnila Saskia, Rizkina Suhendrik Hanwar Yurisman Yurisman Zulfira Mirani