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All Journal Teknik Sipil dan Arsitektur Jurnal Teknik Sipil dan Arsitektur Jurnal Siartek
Bhara, Firnimus Konstatinus
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Civil Engineering, Building, Construction & Architecture Engineering Mechanical Engineering Transportation

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ANALISIS BIAYA SIKLUS HIDUP BANGUNAN: STUDI KASUS BIAYA AWAL, OPERASIONAL, DAN PEMELIHARAAN PADA KANTOR DESA NDORUREA 1 kaidu, Triapriono; Chandra, Jimmy; Bhara, Firnimus Konstatinus; Soludale, Anastasia M.N.
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5199

Abstract

This study sets out to analyze the total Life Cycle Cost (LCC) involved in constructing the Ndorurea 1 Village Office located in Nangapanda District, Ende Regency. Using the LCC approach, the research evaluates all expenses incurred throughout the building’s service life, which includes the initial construction costs, recurring annual operational costs, and scheduled maintenance costs over a span of 30 years. Data for this analysis were collected from the official Budget Plan (RAB), on-site observations, and interviews, and were processed using the Present Worth method. An inflation rate of 2.73% and a discount rate of 5.5% were applied to calculate the Future Value and convert it into Present Value. The findings reveal that the total LCC amounts to Rp 1,579,890,525.62, comprising an initial cost of Rp 784,461,207.31 (49.65%), operational costs of Rp 322,649,142.80 (20.42%), and maintenance costs of Rp 472,780,275.51 (28.92%). These results clearly show that more than half of the overall expenses are incurred after construction is completed. Hence, integrating the LCC approach from the initial planning stage is essential for ensuring cost efficiency, sustainability, and financial accountability in the development of village infrastructure.
STUDI EKSPERIMEN KEKUATAN TEKAN MORTAR DENGAN CAMPURAN KAPUR, BUBUKAN BATA MERAH DAN PASIR Jepira, Harry Janto; Chandra, Jimmy; Bhara, Firnimus Konstatinus
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5241

Abstract

This study aims to evaluate the use of lime as an alternative binder to replace cement in mortar mixtures, with the addition of crushed brick powder to enhance mechanical strength. This approach offers an environmentally friendly solution to the high carbon emissions associated with cement production. The mortar mixture was prepared using a ratio of 1:1:3 (lime : crushed brick powder : sand) with a water-to-binder ratio of 0.5. Tests were conducted to assess the compressive strength and density of the mortar at 7, 14, and 28 days of curing. The results showed that the average compressive strength increased with curing time, reaching 1.49 MPa at 7 days, 1.86 MPa at 14 days, and 2.40 MPa at 28 days. The mortar density ranged from 2,080 to 2,680 kg/m³, with average values of 2,513 kg/m³ (7 days), 2,342 kg/m³ (14 days), and 2,230 kg/m³ (28 days). These findings indicate that the combination of lime and crushed brick powder improves mortar performance and has the potential to be a more sustainable alternative construction material. Keywords: Mortar, Lime, Crushed brick powder, Compressive strength, Density
ANALISIS BIAYA SIKLUS HIDUP BANGUNAN: STUDI KASUS BIAYA AWAL, OPERASIONAL, DAN PEMELIHARAAN PADA KANTOR DESA NDORUREA 1 kaidu, Triapriono; Chandra, Jimmy; Bhara, Firnimus Konstatinus; Soludale, Anastasia M.N.
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5199

Abstract

This study sets out to analyze the total Life Cycle Cost (LCC) involved in constructing the Ndorurea 1 Village Office located in Nangapanda District, Ende Regency. Using the LCC approach, the research evaluates all expenses incurred throughout the building’s service life, which includes the initial construction costs, recurring annual operational costs, and scheduled maintenance costs over a span of 30 years. Data for this analysis were collected from the official Budget Plan (RAB), on-site observations, and interviews, and were processed using the Present Worth method. An inflation rate of 2.73% and a discount rate of 5.5% were applied to calculate the Future Value and convert it into Present Value. The findings reveal that the total LCC amounts to Rp 1,579,890,525.62, comprising an initial cost of Rp 784,461,207.31 (49.65%), operational costs of Rp 322,649,142.80 (20.42%), and maintenance costs of Rp 472,780,275.51 (28.92%). These results clearly show that more than half of the overall expenses are incurred after construction is completed. Hence, integrating the LCC approach from the initial planning stage is essential for ensuring cost efficiency, sustainability, and financial accountability in the development of village infrastructure.
STUDI EKSPERIMEN KEKUATAN TEKAN MORTAR DENGAN CAMPURAN KAPUR, BUBUKAN BATA MERAH DAN PASIR Jepira, Harry Janto; Chandra, Jimmy; Bhara, Firnimus Konstatinus
Jurnal Teknik Sipil dan Arsitektur Vol 30 No 2 (2025): Jurnal Teknik Sipil dan Arsitektur
Publisher : Fakultas Teknik Universitas Tunas Pembangunan Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36728/jtsa.v30i2.5241

Abstract

This study aims to evaluate the use of lime as an alternative binder to replace cement in mortar mixtures, with the addition of crushed brick powder to enhance mechanical strength. This approach offers an environmentally friendly solution to the high carbon emissions associated with cement production. The mortar mixture was prepared using a ratio of 1:1:3 (lime : crushed brick powder : sand) with a water-to-binder ratio of 0.5. Tests were conducted to assess the compressive strength and density of the mortar at 7, 14, and 28 days of curing. The results showed that the average compressive strength increased with curing time, reaching 1.49 MPa at 7 days, 1.86 MPa at 14 days, and 2.40 MPa at 28 days. The mortar density ranged from 2,080 to 2,680 kg/m³, with average values of 2,513 kg/m³ (7 days), 2,342 kg/m³ (14 days), and 2,230 kg/m³ (28 days). These findings indicate that the combination of lime and crushed brick powder improves mortar performance and has the potential to be a more sustainable alternative construction material. Keywords: Mortar, Lime, Crushed brick powder, Compressive strength, Density
STUDI NUMERIK KARAKTERISTIK DINAMIK BETON RINGAN DENGAN AGREGAT KASAR BATU APUNG Hawa, Annisa; Bhara, Firnimus Konstatinus; Pau, Dedi Imanuel
SIARTEK - Jurnal Teknik Sipil dan Arsitektur Vol 12 No 1 (2026): SIARTEK - Jurnal Teknik Sipil dan Arsitektur
Publisher : Program Studi Teknik Sipil

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

Abstract

Beton adalah suatu material utama yang sangat diperlukan dalam konstruksi. Beton sendiri merupakan campuran yang homogen antara semen, agregat dan air. Karakteristik beton adalah mempunyai kuat tekan yang tinggi tetapi kuat tarik yang rendah. Salah satu jenis beton yang akan digunakan pada penelitian ini adalah beton ringan dengan agregat kasar dari batu apung. Penelitian ini bertujuan mengetahui karakteristik dinamik beton ringan dengan analisis secara numerik dan menvalidasikankannya dengan hasil pengujian eksperimen. Karakteristik dinamik beton ringan dengan agregat kasar berupa batu apung pada kondisi beberapa umur 3 hari, 7 hari, 14 hari, 21 hari, 28 hari beton dengan analisis secara numerik dengan menggunakan program computer yaitu SAP 2000 dengan beban yang digunakan adalah time history berupa beban pukulan atau impact. Karakteristik dinamik berupa nilai massa (m), nilai kekakuan (k), nilai redaman, dan frekuensi alami. Hasil Analisa numerik yaitu nilai frekuensi alami pada hari ke 3 (21,77 Hz), hari ke 7 (22,04 Hz), hari ke 14 (22,27 Hz), hari ke 21 (22,78 Hz), hari ke 28 (22,96 Hz). nilai rasio redaman : pada hari ke 3 (4,74%), hari ke 7 (4,34%), hari ke 14 (4,34%), hari ke 21 (4,45%), hari ke 28 (4,23%). nilai massa : pada hari ke 3 (1,967kg), hari ke 7 (1,919 kg), hari ke 14 (1,88kg), hari ke 21 (1,796 kg), hari ke 28 (1,768 kg). Hasil dari validasi karakteristik dinamik secara eksperimen dan numerik lebih besar dari 10% sedangkan massa kurang dari 10%. Secara statistika analisa eksperimen tervalidasi secara tidak baik terhadap hasil analisa numerik yang ditunjukan dengan perbandingan nilai rasio redaman dan frekuensi alami lebih besar dari 10
Co-Authors Chandra, Jimmy Hawa, Annisa Jepira, Harry Janto Kaidu, Triapriono Pau, Dedi Imanuel Soludale, Anastasia M.N.