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All Journal Jurnal Sipil Terapan
Ayulia Taareluan
Politeknik Negeri Manado

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Perencanaan Sistem Utilitas Air Kotor pada Proyek (SMP Negeri 4 Tagulandang) Ayulia Taareluan; Sherley Runtunuwu; Olivia Moningka
Jurnal Sipil Terapan Vol. 4 No. 2 (2026): November: Jurnal Sipil Terapan
Publisher : Fakultas Teknik Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58169/jusit.v4i2.1222

Abstract

This study aims to design the wastewater utility system (blackwater and greywater) for SMP Negeri 4 Tagulandang building, which is part of the permanent housing relocation project following the Mount Ruang eruption in Modisi Village, South Bolaang Mongondow Regency. A descriptive quantitative case study method was employed with technical calculations based on SNI 8153:2015, SNI 03-7065:2005, and SNI 2398:2017. User data of 32 people (23 students, 8 teachers, and 1 principal) served as the basis for clean water demand and wastewater generation calculations. Results show blackwater discharge of 960 L/day (0.0444 L/s) and greywater of 320 L/day (0.0148 L/s) with a total peak discharge of 0.145 L/s. Piping network design using the Plumbing Fixture Unit (UBAP) method resulted in Ø4" (110 mm) pipes with 1% slope for blackwater and Ø3" (75 mm) pipes with 2% slope for greywater. The designed separate septic tank capacity is 7.68 m³ with dimensions of 2.77 m × 1.87 m × 1.79 m. The system meets hydraulic requirements and applicable technical standards, ensuring safe and sustainable operation.