Jurnal Teknik Indonesia

Analysis of Clean Water Distribution Pipe Implementation Time Using Value Engineering Method in Rungkut Industri Surabaya

Ahmad Rois — 2026-01-19

Clean water distribution infrastructure projects in industrial areas face significant challenges related to cost efficiency and implementation time, which directly impact project sustainability and operational effectiveness. This study analyzes the cost and time efficiency of the clean water distribution system in the Rungkut industrial area, Surabaya, by applying the Value Engineering (VE) method. The main objective of this study is to evaluate and compare the performance of three commonly used types of pipes—namely HDPE (High-Density Polyethylene), uPVC (unplasticized polyvinyl chloride), and GI (galvanized iron)—to determine the most optimal alternative without reducing the function or quality of the clean water distribution system. Data collection was conducted through a combination of methods: distributing questionnaires to professional respondents in civil engineering and water installation fields, conducting direct interviews with project-related parties, and analyzing technical documents and costs from actual projects. The obtained data were analyzed using the Relative Importance Index (RII) method to assess key aspects such as cost efficiency, ease of installation, and material durability. The results showed that HDPE pipes offer superior cost and time efficiency compared to the others. The cost difference between HDPE and uPVC pipes is Rp1,407,577, while that with GI pipes is Rp731,885. In terms of time, HDPE pipes can reduce implementation duration by up to 39 days compared to uPVC pipes and by 9 days compared to GI pipes.

Tinjauan Ulang Perencanaan Struktur Atas Bangunan Ruko di Balai Jaring Kota Payakumbuh

Vathan Ibrahim — 2026-01-19

Peninjauan ulang perencanaan struktur atas bangunan ruko di Balai Jaring Kota Payakumbuh bertujuan untuk mengetahui apakah struktur pada bangunan ruko tersebut sudah memiliki mutu yang baik dan serta memenuhi syarat yang telah diatur dalam peraturan-peraturan yang berlaku untuk perencanaan struktur bangunan. Perencanaan Struktur Atas Bangunan Ruko di Balai Jaring dipreliminary Design menggunakan SAP2000. Pembebanan yang diinput pada SAP2000 ialah beban mati, beban hidup, berat sendiri bangunan dan bangunan gempa. Dari preliminary Design didapatkan hasil penulangan balok ukuran 20 x 30 dengan mutu beton 20,75 Mpa, mutu baja 290 Mpa, Tulangan geser untuk tumpuan yang dipakai adalah Ø10 – 100, sedangkan untuk tulangan lapangan adalah Ø10 – 150. Tulangan lentur yang dipakai adalah 2 D 13 untuk tulangan tekan, sedangkan 3 D 13 untuk tulangan Tarik. Untuk perencanaan kolom ukuran 35 x 35 dengan mutu beton 20,75 Mpa, mutu baja 290 Mpa, Tulangan geser untuk tumpuan yang dipakai adalah Ø10 – 150, sedangkan untuk tulangan utama yang dipakai adalah 8 D 13. Sedangkan untuk pelat lantai ketebalan 12 cm, Tulangan yang dipakai arah x yaitu Ø10 – 150, sedangkan untuk arah y sama dengan arah x yaitu Ø10 – 150.

Analysis of Structural Behavior with Stage Construction Analysis Method Compared to Conventional Analysis on Tegalalang Bali Real Estate Building

I Wayan Gunawan — 2026-01-19

Conventional structural analysis methods have shortcomings because they assume construction is complete, leading to overestimation in columns and walls. Deformation occurs due to self-weight, altering heights during casting, alongside creep (inelastic deformation from constant loads) and shrinkage (volume change from water loss). Thus, stage construction analysis (SCA) is essential. Analysis followed SNI requirements for shear force (V), vibration period (T), displacement (????), and stress ratio. Structural elements were grouped by construction stages and contours. In SCA, dead and additional dead loads are defined non-linearly, matching stages. SCA increases displacement/deformation by 43% (x-direction), 39% (y), and 44% (z), iron work volume by 7%, and internal forces, reducing column capacity by 27.7% on average. Differences from conventional methods arise because SCA models groups per construction stages, using Nonlinear Stage Construction Load Case for self-weight and dead loads, unlike Static Linear Load Case.

Construction Cost Analysis of Spun Pile and Bored Pile Foundations for Aqueduct C of the Raw Water Supply Supplemental Project in Aceh Province

Ghufran Helmi Aziz — 2026-01-22

Selecting the optimal deep foundation system is a critical task in major infrastructure projects, requiring a balance between structural performance, geotechnical constraints, and economic viability, as foundation costs typically represent a significant portion of the total budget. Bored piles and spun piles are two widely adopted deep foundation types, each offering distinct advantages in terms of capacity, installation speed, and environmental impact. Given the necessity for cost optimization in the Raw Water Supply Supplemental Project in Aceh Province, this study focuses on comparing the construction costs of these two foundation types for Aqueduct C. The foundation plan for Aqueduct C requires a total pile length of 2,870 meters with a diameter of 60 cm. The analysis uses unit cost data based on the Ministerial Regulation's Unit Price Analysis (AHSP) tables. The calculation results show that the total cost for the bored pile foundation is Rp2,847,074,353.90, while the total cost for the spun pile foundation is Rp3,205,844,730.90. This indicates that the bored pile foundation is more cost-effective for this specific project by approximately Rp358,770,377.00. The structural capacity analysis confirmed that the designed foundation group safely supports the axial load transferred by the piers.

Desain Pembangkit Listrik Tenaga Angin Kompak Untuk Pengisian Daya Perangkat Elektronik

Agung Setiawan — 2026-01-19

Energi listrik merupakan kebutuhan kritis dalam aktivitas luar ruangan, mendukung fungsi komunikasi darurat, penerangan, dokumentasi visual, navigasi GPS, dan operasional perangkat medis portabel. Keterbatasan akses sumber listrik konvensional di kawasan terpencil seperti pegunungan dan hutan belantara menciptakan risiko keselamatan yang signifikan, terutama dalam kondisi darurat. Penelitian ini bertujuan merancang dan mengimplementasikan sistem pembangkit listrik tenaga angin portabel berbasis energi terbarukan untuk aplikasi luar ruangan. Metode penelitian meliputi kajian literatur sistematis, perancangan perangkat keras dan perangkat lunak terintegrasi, fabrikasi prototipe mekanik dengan pendekatan modular, serta pengujian lapangan dalam kondisi operasional nyata. Sistem ini mengintegrasikan generator angin DC mini berdaya nominal 5W dengan konverter buck-boost otomatis untuk stabilisasi tegangan keluaran. Monitoring parameter listrik dilakukan menggunakan sensor INA3221 dengan akurasi tinggi, diproses oleh mikrokontroler ESP32, dan disimpan secara lokal melalui kartu microSD dalam format CSV untuk analisis retrospektif. Energi yang dihasilkan disimpan dalam baterai aki 6V 7Ah dan dapat didistribusikan untuk pengisian perangkat elektronik melalui port USB standar 5V. Hasil pengujian lapangan menunjukkan sistem mampu menghasilkan tegangan keluaran stabil sebesar 6,5V dengan arus 12,66 mA pada kecepatan angin optimal 12,2 km/jam, menghasilkan daya keluaran maksimal 0,0829 W. Sistem menunjukkan cut-in speed pada kecepatan angin 8 km/jam dan mampu mengisi baterai aki 6V secara efektif. Temuan ini mengonfirmasi kelayakan teknis sistem pembangkit angin portabel skala mikro sebagai solusi energi alternatif untuk kegiatan luar ruangan berskala kecil.