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JURNAL SAINTIS
Published by Universitas Islam Riau
ISSN : 14107783     EISSN : 25807110     DOI : -
Core Subject : Social, Engineering,
Civil Engineering, Building, Construction & Architecture Engineering Environmental Science
Saintis is devoted to research on civil engineering related fields including geotechnics, transports, structures, water resources and others related with civil engineering topics.
Arjuna Subject : -
Articles 222 Documents
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Evaluasi Waste Konstruksi Pada Proyek di Pekanbaru: Evaluation of Waste Construction Project in Pekanbaru Khairudin Lubis, Azhar; Elizar; Sapitri; Agus, Firdaus
JURNAL SAINTIS Vol. 22 No. 02 (2022)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2022.vol22(02).25324

Abstract

[IN] Pembangunan proyek konstruksi di Kota Pekanbaru kerap dihadapkan pada permasalahan waste time (pemborosan waktu) yang berdampak pada keterlambatan pencapaian target waktu pelaksanaan. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor penyebab waste yang mempengaruhi kinerja waktu proyek konstruksi serta menentukan urutan prioritas indikator penyebab tertinggi. Metode yang digunakan adalah kualitatif dengan instrumen kuesioner yang didistribusikan secara purposive sampling kepada responden dari kalangan penyedia jasa dan konsultan supervisi. Data dianalisis menggunakan Software SPSS versi 21 untuk uji validitas, reliabilitas, dan analisis deskriptif. Hasil penelitian mengidentifikasi 7 variabel dan 35 indikator yang valid dan reliabel. Faktor-faktor tersebut meliputi Sumber Daya Manusia, Manajemen, Material dan Bahan, Pelaksanaan Konstruksi, Eksternal, Desain dan Dokumen, serta Waktu Menunggu. Dari analisis ranking, diperoleh 10 indikator utama penyebab waste time. Indikator dengan nilai tertinggi adalah minimnya koordinasi atau komunikasi (62,1%), diikuti oleh kualitas pengontrolan pekerjaan (57,9%), dan kesalahan dalam dokumen kontrak (56,8%). Sebaliknya, indikator dengan pengaruh terendah adalah waktu perencanaan dan jadwal pengiriman material (14,1%). Temuan ini merekomendasikan peningkatan koordinasi dan pengawasan sebagai langkah kritis untuk meminimalisir waste time dalam proyek konstruksi. [EN] Construction projects in Pekanbaru often encounter time-wasting issues, resulting in delays in achieving project completion targets. This study aims to identify the causal factors that affect waste in construction project time performance and to determine the priority ranking of the most significant indicators. A qualitative approach was employed, utilizing a questionnaire instrument distributed via purposive sampling to respondents from contractors and supervision consultants. The collected data were analyzed using SPSS Software version 21 for validity tests, reliability tests, and descriptive analysis. The results identified 7 valid and reliable variables encompassing 35 indicators. These factors include Human Resources, Management, Materials, Construction Execution, External Issues, Design and Documentation, and Waiting Time. The ranking analysis yielded the top 10 primary indicators causing time waste. The highest-ranked indicator was insufficient coordination or communication (62.1%), followed by poor quality of work control (57.9%), and errors in contract documents (56.8%). Conversely, the indicator with the lowest impact was planning time and material delivery scheduling (14.1%). These findings recommend enhancing coordination and oversight as critical steps to minimize time waste in construction projects.
Evaluasi Penggunaan Alat Berat Pada Pekerjaan Timbunan Proyek Pembangunan Red Fox Residence: Evaluation of Heavy Equipment for the Filing Work of the Red Fox Residence Project Construction Rispa Musdalifah, Happyza; Sapitri
JURNAL SAINTIS Vol. 22 No. 02 (2022)
Publisher : UIR Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/saintis.2022.vol22(02).25434

Abstract

[IN] Pelaksanaan pekerjaan proyek Perumahan Red Fox Residence mengalami penambahan elevasi tanah yang mengakibatkan penambahan biaya pada pekerjaan timbunan. Luas awal area tanah perumahan yang akan ditimbunan adalah 14.080m2, namun setelah dilakukan pengukuran ketinggian jalan penghubung perumahan, ternyata elevasi tanah harus ditambah 0,21 m untuk mengimbangi ketinggian jalan. Terkait hal tersebut, kontraktor menghitung ulang biaya pekerjaan penimbunan dilokasi perumahan Red Fox Residence. Komposisi alat berat pada eksisting rancana kontraktor sebanyak 1 unit excavator, 5 unit dump truck, dan 1 unit bulldozer. Dengan nilai proyek sebesar Rp.479.370.912,27 pekerjaan tersebut dijadwalkan pelaksanaannya selama 25 hari yaitu dari tanggal 25 April 2021 sampai dengan 30 Mei. Terkait dengan adanya penambahan volume pekerjaan, maka tujuan penelitian ini menganalisis kebutuhan alat berat yang optimal dan berapa estimasi biaya yang dibutuhkan. Metode yang dilakukan adalah dengan pendekatan deskriptif dengan perhitungan alat berat yang diatur melalui Permen PUPR NO.28/PRT/M/2016 Tentang Pedoman AHSP Bidang PU. Hasil penelitian menunjukkan bahwa penggunaan alat berat yang direkomendasikan adalah sebanyak 1 unit excavator, 11 unit dump truck, dan 1 unit bulldozer. Pekerjaan penimbunan tersebut selama 14 hari, dengan biaya Rp.423.281.968,84. Selisih penyelesaian waktu lebih cepat 11 hari dari eksisting rencana dan selisih biaya sebanyak Rp56.088.943,43. Dengan demikian, pekerjaan yang direkomendasikan tersebut cocok dipakai dalam proyek timbunan pekerjaan penimbunan Perumahan Red Fox Residence. [EN] The construction of the Perumahan Red Fox Residence project has experienced an increase in soil elevation, which has resulted in additional costs for the heap work. The initial area of the residential land to be piled up is 14,080 m², but after measuring the height of the road connecting the housing, it was found that the elevation of the soil must be increased by 0.21 m to compensate for the road's height. In this regard, the contractor recalculated the cost of the stockpiling work at the Red Fox Residence housing location. The composition of heavy equipment in the existing contractor's plan is 1 unit of excavator, 5 units of dump trucks, and 1 unit of bulldozer. With a project value of Rp. 479,370,912.27, the work is scheduled to be carried out for 25 days, from April 25, 2021, to May 30. Related to the increase in work volume, the purpose of this study is to analyze the optimal need for heavy equipment and how much is the estimated cost. The method carried out is a descriptive approach with the calculation of heavy equipment regulated through the Minister of PUPR Regulation NO.28/PRT/M/2016 concerning AHSP Guidelines for Public Works Sector. The results of the study showed that the recommended use of heavy equipment was 1 unit of excavator, 11 units of dump truck, and 1 unit of bulldozer. The hoarding work lasted for 14 days, at a cost of Rp 423,281,968.84. The difference in completion time is 11 days faster than the existing plan, and the cost difference is IDR 56,088,943.43. Thus, the recommended work is suitable for use in filling work of the Perumahan Red Fox Residence project.

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