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All Journal BANGUN REKAPRIMA Jurnal Abdi Masyarakat Humanis
Wiguna, Edo
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Humanities Civil Engineering, Building, Construction & Architecture Education Engineering Other

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STUDI EKSPERIMEN KUAT LEKAT LEM PADA PASANGAN BETON RINGAN: STUDI EKSPERIMEN KUAT LEKAT LEM PADA PASANGAN BETON RINGAN Wiguna, Edo; Mahbub, Jamal; Lestari, Nor Puji; Setiawan, Adi; Larassati, Dian Sukma
Bangun Rekaprima Vol. 11 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i1.6799

Abstract

In modern construction, lightweight bricks are increasingly used as an alternative building material due to their advantages in terms of light weight, ease of installation, and energy efficiency. However, the strength of structures formed from lightweight brick masonry is highly dependent on the quality of the bond between the elements, particularly the use of adhesives such as construction glue. One crucial factor determining the bond strength is the configuration and length of the bonding surface used. This study aims to evaluate the effect of the number of bonding rows on the adhesive bond strength of lightweight brick masonry. Testing was conducted experimentally using one- and two-row bonding configurations. Each sample was subjected to compressive force through a 24.4 mm diameter cylindrical press. Results showed that the two-row configuration produced a higher bond strength, but with a larger coefficient of variation, indicating lower stability of the results. Increasing the bond length actually tended to decrease the bond strength, likely due to uneven distribution of glue and pressure. Furthermore, all test specimens fractured in the brick body, not at the bonding surface, indicating that the adhesive strength had exceeded the tensile strength of the lightweight brick. Regression analysis showed a very strong relationship between compressive force and bond strength, indicating that applied pressure was the dominant factor in bond effectiveness.
Penguatan Daya Saing Umkm Melalui Penerapan Strategi Manajemen Pemasaran Terpadu Pada Umkm Di Perumahan Bukit Rivaria Kelurahan Bedahan Kecamatan Sawangan, Kota Depok Muthowwif, Syihabuddin; Asmoro, Satrio Panji; Setiawan, Anwar; Candy, Dwi Yuna Aries; Wiguna, Edo; Sudaryana, Yayan; Arianto, Nurmin
Jurnal Abdi Masyarakat Humanis Vol. 7 No. 1 (2025): Jurnal Abdi Masyarakat Humanis
Publisher : LPPM Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jamh.v7i1.54653

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan daya saing UMKM melalui penerapan strategi manajemen pemasaran terpadu bagi pelaku Usaha Mikro, Kecil, dan Menengah (UMKM) di Perum Bukit Rivaria, Kelurahan Bedahan, Kecamatan Sawangan, Kota Depok. Usaha mikro, kecil, dan menengah (UMKM) adalah jenis perusahaan di Indonesia yang dimiliki perorangan maupun badan usaha sesuai dengan kriteria yang ditetapkan oleh Undang-undang No. 20 tahun 2008. UMKM dapat berarti bisnis yang dijalankan individu, rumah tangga, atau badan usaha ukuran kecil. Penggolongan UMKM didasarkan batasan omzet pendapatan per tahun, jumlah kekayaan aset, serta jumlah pegawai. Metode yang digunakan berupa penyuluhan, diskusi, dan pendampingan pada UMKM. Hasil kegiatan ini menunjukkan bahwa adanya peningkatan kesadaran pelaku usaha terhadap pentingnya strategi pemasaran terpadu pada unit usahanya agar bisa mendapatkan hasil yang maksimal dan bisa menjangkau pangsa pasar yang lebih luas. Strategi ini diharapkan berperan penting dalam membangun kesadaran pelaku usaha dalam mengembangkan unit usaha yang mereka jalankan.
EVALUASI KUAT TEKAN BETON DENGAN VARIASI SUBSTITUSI ABU BATU SEBAGAI UPAYA PEMANFAATAN LIMBAH MATERIAL: EVALUASI KUAT TEKAN BETON DENGAN VARIASI SUBSTITUSI ABU BATU SEBAGAI UPAYA PEMANFAATAN LIMBAH MATERIAL Larassati, Dian Sukma; Setiawan, Adi; Wiguna, Edo; Hudaya, Diah Wulansari; Imansyah, Salmaa R. N; Purwanto; Yuono, Sukma Setyo
Bangun Rekaprima Vol. 11 No. 2 (2025): Oktober 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v11i2.7235

Abstract

Infrastructure development in Indonesia is growing rapidly, necessitating economical and environmentally friendly building materials. Concrete is a key construction material, but the cement-making process produces significant carbon emissions. To reduce environmental impacts, one method is to use industrial waste, such as rock ash, as a substitute for sand in concrete mixes. This study aimed to examine the effect of rock ash use on the compressive strength of K-225 quality concrete after 28 days. Five mixtures were tested with ratios of rock ash ranging from 0% to 100% replacing sand. The results showed that none of the mixtures achieved the desired compressive strength of 225 kg/cm². However, the mixture with 50% rock ash provided the best compressive strength of 194.385 kg/cm² with the lowest standard deviation (8.648 kg/cm²), indicating consistent quality. The decrease in compressive strength at higher rock ash levels was due to the presence of fine particles and silt exceeding the maximum limit. The study concluded that fly ash can be used as a sand substitute up to 50% of the time, provided its quality meets technical standards. The use of fly ash can help save costs, conserve natural resources, and support sustainable development.
ANALISIS HASIL PEMBUATAN PETA KONTUR DENGAN METODE POLIGON TERTUTUP MENGGUNAKAN PROGRAM SURFER 15 DI AREA GEDUNG DIREKTORAT POLITEKNIK NEGERI SEMARANG (AREA GEDUNG DIREKTORAT - PKM - GEDUNG SC - GEDUNG KERJA SAMA POLITEKNIK NEGERI SEMARANG): ANALISIS HASIL PEMBUATAN PETA KONTUR DENGAN METODE POLIGON TERTUTUP MENGGUNAKAN PROGRAM SURFER 15 DI AREA GEDUNG DIREKTORAT POLITEKNIK NEGERI SEMARANG (AREA GEDUNG DIREKTORAT - PKM - GEDUNG SC - GEDUNG KERJA SAMA POLITEKNIK NEGERI SEMARANG) Wiguna, Edo; Rahmawati, Roselina; Mukhlisin, Muhammad; Fatmawati, Leily; Wicaksono, Teguh Mulyo
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7508

Abstract

This study aims to analyze the results of contour map creation using the closed polygon method through the Surfer 15 program in the area of ​​the Semarang State Polytechnic Directorate Building, which includes the area of ​​the Directorate Building - PKM - SC Building - Cooperation Building. Contour map creation was carried out to determine the topographic conditions and characteristics of the land slope in the area, which affect the planning and development of campus infrastructure. The methods used in this study include collecting coordinate and elevation data in the field, data processing using the closed polygon method to obtain high accuracy in positioning, and land surface modeling with Surfer 15 software. The results of data processing are presented in the form of contour maps and cross-sections and longitudinal sections, which are then analyzed to determine the level of land slope in each measurement segment. From the analysis results, it was found that the topography in the section of the Directorate Building - PKM - SC Building - Cooperation Building showed significant variations in height. Based on the measurement results, the slope of the land in the cross section A–A (Directorate–PKM) is 5.12%, section B–B (Directorate–PKM) is 3.59%, section C–C (Directorate–SC Building) is 7.94%, and the longitudinal section of the Tennis Court–Workshop Building has a slope of 2.44%. These values ​​indicate that the research area has varying elevation differences, with a tendency of gentle to moderate slopes. Overall, the results of this study indicate that the closed polygon method and modeling with Surfer 15 are able to provide an accurate and detailed topographical picture of the land conditions in the Semarang State Polytechnic environment. This land slope information can be used to support spatial planning, drainage, and the development of more efficient and sustainable campus facilities.
ANALISIS PENCAHAYAAN BUATAN DI RUANG KELAS LANTAI 2 GEDUNG SEKOLAH C (SC) POLITEKNIK NEGERI SEMARANG: ANALISIS PENCAHAYAAN BUATAN DI RUANG KELAS LANTAI 2 GEDUNG SEKOLAH C (SC) POLITEKNIK NEGERI SEMARANG Setiawan, Adi; Suwarto; Sudarmono; Santosa, Stefanus; Setyono, Karnawan Joko; Wiguna, Edo; Larassati, Dian Sukma; Imansyah, Salmaa R.N; Hudaya, Diah Wulansari
Bangun Rekaprima Vol. 12 No. 1 (2026): April 2026
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/bangunrekaprima.v12i1.7510

Abstract

Adequate lighting is crucial for supporting comfortable and effective classroom learning. This study evaluated the artificial lighting levels in a second-floor classroom on the C Building of Semarang State Polytechnic using a digital luxmeter. The research method used was to measure artificial lighting locally and generally. The final measurement results were compared to SNI 03-6575-2001, which requires a minimum value of 350 lux for classrooms. The measurements showed that most points had lighting values ​​below 200 lux, indicating that the lighting did not meet the standard. The low lighting levels were caused by several malfunctioning lamps and uneven light distribution due to suboptimal fixture layout and room reflectance. These findings indicate the need for lighting system improvements to enhance visual comfort and support the learning process.
Co-Authors Asmoro, Satrio Panji Candy, Dwi Yuna Aries Diah Wulansari Hudaya, Diah Wulansari Fachry Abda El Rahman G. Gunawan Imansyah, Salmaa R. N Imansyah, Salmaa R.N Larassati, Dian Sukma Leily Fatmawati, Leily Lestari, Nor Puji Mahbub, Jamal Muhammad Mukhlisin Muthowwif, Syihabuddin Nurmin Arianto, Nurmin Purwanto Roselina Rahmawati Setiawan, Anwar Setyono, Karnawan Joko Stefanus Santosa Sudarmono Sudaryana, Yayan Sukamto, Ika Sumiyarsi Suwarto Suwarto Wicaksono, Teguh Mulyo Yuono, Sukma Setyo