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Pengaruh Penggunaan Platform Microsoft Teams Terhadap Hasil Belajar Siswa Di SMK Negeri 1 Karawang Sri Rahayu; Mohammad Afnan; Budi Kudwadi
Jurnal Pendidikan Teknik Bangunan Vol 1, No 2 (2021): Jurnal Pendidikan Teknik Bangunan
Publisher : Universitas Pendidikan Indonesia

Direct face-to-face instruction isn't permitted amid the Covid-19 widespread, so these exercises are exchanged online. Microsoft Teams may be a advanced stage that can encourage online bunch assembly exercises. The utilize of these applications is applied to learning exercises for street and bridge development subjects within the trust of progressing understudy learning results. The reason of this think about is to discover out:Overview of the utilize of Microsoft Groups application at SMK Negeri 1 Karawang,Overview of understudy learning results in street and bridge construction subjects, Impact of utilizing Microsoft Groups application on learning results understudies within the subject of street and bridge development at SMK Negeri 1 Karawang. The investigate strategy this time is to apply quantitative investigate utilizing correlational investigation methods. The information collection strategy for utilizing the Microsoft Groups application (variable X) employments a survey, whereas information on understudy learning victory (variable Y) employments documentation of understudy scores within the Street and Bridge Development subject. The results of this study this consider appear that (1) The common depiction of the utilize of the Microsoft Groups application is categorized as direct with a rate of 40% (2) Understudy learning results in Street and Bridge Development subjects at SMK Negeri 1 Karawang appear a good category, (3) There's an impact the utilize of the Microsoft Groups application on understudy learning results outcomes significantly with regression equation Y = 24.660 + 0.517X, andthe contribution of the X variable to the Y variable is 26.3%.

KARAKTERISTIK BETON GEOPOLIMER PADA AKTIVATOR NATRIUM HIDROKSIDA (NAOH) DAN NATRIUM SILIKAT (NA2SIO3) Ben Novarro Batubara; Istiqomah Istiqomah; Budi Kudwadi; Diza Alfan
Kokoh Vol 20, No 2 (2022): Juli 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

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Geopolymer concrete is concrete composed of cystesis material of non-organic materials that go through a polymerization process so that it is environmentally friendly, so it can reduce the amount of carbon dioxide produced in Portland cement in the normal concrete manufacturing process which can cause a greenhouse effect. Geopolymer concrete requires a lot of silica and alumina. In geopolymer concrete, the most common alkaline activators used in geopolymer concrete are Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3). Fly Ash has a lot of silica and alumina and the role of alkali activator to dissolve the elements of silica and alumina. The method carried out is an experiment. This study used a ratio between fly ash and activator of 70%:30%, and used a ratio of activators between Na2SiO3 and NaOH of 5:2, 6:2, 7:2, 8:2, 9:2, with a cylinder test object of 20x10 cm with a test result of 42.71 MPa.Keywords: Activator, Compressive Strength, Geopolymer Concrete,

ANALISIS KINERJA STRUKTUR GEDUNG ASIMETRIS AKIBAT BEBAN GEMPA (Studi Kasus :Gedung Kantor Pelayanan Pemerintah (POLRES) Kota Bekasi) Fajar Abdilah; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi; Odih Supratman
Kokoh Vol 20, No 1 (2022): Januari 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

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The infrastucture of high-rise buildings must have an earthquake resistance. As a mitigation effort, a building must be symmetrical. When an earthquake occurs the response of the structure easily predictable. However, along with the development of architectural design, many buildings with irregular shapes (asymmetrical). So, it is necessary to analyze the behavior of structures in irregular buildings. The purpose of this study was to determined the maximum displacement value and a structural performance due to an earthquake loads based on ATC-40. The earthquake analysis used a Response Spectrum and Time History with the help of ETABS V17.0.1 software, case study located in Bekasi City Government Service Office (POLRES) building. The research used quantitative descriptive method. Based on the analysis, the maximum displacement value due to earthquake loads using the Response Spectrum analysis method for the X direction were 74,655 mm and 54,566 mm for the Y direction.Keywords: Asymmetrical, Displacement structure, Earthquake loads, Earthquake Resistance, Structure performance,

EVALUASI KINERJA STRUKTUR BANGUNAN GEDUNG TAHAN GEMPA DENGAN METODE ANALISIS RESPONS SPEKTRUM DAN TIME HISTORY Muhammad Irsan Arrasyid; Istiqomah Istiqomah; Ben Novarro Batubara; Budi Kudwadi
Kokoh Vol 21, No 2 (2023): Juli 2023
Publisher : Universitas Pendidikan Indonesia (UPI)

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The city of Bandung is one of the cities that is prone to earthquakes because it is passed by the Lembang fault. Therefore, buildings in the city of Bandung should have implemented the concept of earthquake-resistant buildings in their construction. To avoid the occurrence of damage or collapse of the structure of the building against an earthquake, it is necessary to analyze the building against the earthquake. This study aims to determine how many deviations occur in the building due to the earthquake and the performance of the building structure. The method used is the response spectrum and time history analysis method and then evaluates the performance of the structure against earthquakes using the ATC-40 standard. The building that is the case study is the Directorate of Drugs and the Directorate of Intelligence and Security for the West Java Police, which consists of 5 floors. Structural modeling and analysis were performed using ETABS v20. Earthquake records used are Imperial Valley, Kobe and Trinidad earthquakes. Based on the results of the analysis of the maximum deviation with the response spectrum method 26.74 mm in the X direction and 26.46 mm in the Y direction. Meanwhile, for the time history analysis, it was obtained 33.05 mm in the X direction and 28.96 in the Y direction. The maximum value of the total deviation obtained 0.0016 m and the maximum value of inelastic deviation obtained 0.0014 m so that it shows the level of performance of this building structure based on ATC-40 is Immediate Occupancy (IO), which means the structure is in a safe condition.Keywords : ATC-40, earthquake resistant buildings, spectrum response, time history,

Tingkat Pengetahuan dan Sikap Siswa SMK DPIB Mengenai Risiko Gempa Bumi terhadap Kerusakan Bangunan Raihan Dermawan, Muhamad; Kudwadi, Budi; Parmono, Parmono
Jurnal Pendidikan Teknik Bangunan Vol 4, No 1 (2024): Jurnal Pendidikan Teknik Bangunan
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/jptb.v4i1.67073

Pengetahuan mengenai risiko gempa bumi sangatlah penting. Cara yang bisa digunakan untuk meningkatan pengetahuan dan sikap mengenai risiko gempa bumi salah satunya yaitu melalui pendidikan. SMKN 2 Garut merupakan lembaga pendidikan yang memiliki berbagai program keahlian, salah satunya adalah Desain Pemodelan dan Informasi Bangunan (DPIB). Siswa yang dipersiapkan untuk memasuki dunia konstruksi perlu memahami dan mengetahui risiko yang akan terjadi pada suatu bangunan akibat gempa bumi. Penelitian ini memiliki tujuan untukmengetahui tingkat pengetahuan siswa mengenai konsep mekanisme gempa, tingkat kerusakan bangunan akibat gempa, dan mitigasi gempa dan untuk mengetahui sikap siswa dalam memahami risiko dan mitigasi gempa bumi dalam kerusakan bangunan. Teknik pengumpulan data dilakukan menggunakan tes dan kuesioner pada 76 siswa kelas XI DPIB SMKN 2 Garut. Metode yang dilakukan dengan pendekatan kuantitatif. Deskripsi data didapatkan dengan analisis deskriptif berdasarkan hasil persentase dan uji kecenderungan. Hasil penelitian menunjukkan kategori yang sangat rendah pada tingkat pengetahuan siswa mengenai konsep mekanisme gempa bumi dan tingkat kerusakan bangunan akibat gempa bumi; tingkat pengetahuan siswa terkait dengan mitigasi bencana gempa bumi; sikap siswa dalam memahami risiko bencana gempa bumi menunjukkan sikap yang baik; dan sikap siswa mengenai mitigasi risiko bencana gempa bumi sudah menunjukkan sikap yang baik. Sebaiknya siswa dapat meningkatkan pengetahuan tentang gempa bumi dari berbagai sumber belajar. Adapun saran untuk sekolah, diharapkan dapat mengaitkan pembelajaran mengenai gempa bumi dengan kompetensi siswa dan dapat melakukan sosialisasi mengenai risiko gempa bumi.

ANALISIS KINERJA STRUKTUR GEDUNG RUSUN ASN 3 AKIBAT BEBAN GEMPA Apriliani, Roski; Kudwadi, Budi; Batubara, Ben Novarro
Kokoh Vol 23, No 1 (2025): Januari 2025
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/k.v23i1.80076

Rusun ASN 3 Building is a multi-story residential building with height of 54.8 m located in East Kalimantan. For the comfort and safety of the building occupants, an analysis of the effects of earthquake loads is needed. This research analyzed using the response spectrum and time history methods. This research was conducted to determine the maximum drift value and level of structural performance based on ATC – 40. The results obtained were that the maximum drift value due to spectrum response earthquake was 41.6130 mm for X direction and 48.9380 mm for Y direction. The maximum drift value due to time history earthquake, for Chuetsu-oki earthquake it was 33.7160 mm in X direction and 55.3960 mm in Y direction; for Kushirooki earthquake it was 40.9760 mm in X direction and 39.9820 mm in Y direction; for Miyagi_Pre.Off earthquake, it was 53.5150 mm in X direction and 42.9820 mm in Y direction. The level of structural performance of the building due to earthquake loads, was at the Immediate Occupancy (IO) performance level, which means the building was still able to withstand the forces of the earthquake that occurred.Keywords : ATC-40, Spectrum Response, Time History, Dynamic Earthquake, Structural Performance

SUBTITUSI LIMBAH ABU SEKAM PADI PADA BETON SELF COMPACTING CONCRETE (SCC) M. Ridwan; Istiqomah; Budi Kudwadi
JMTS: Jurnal Mitra Teknik Sipil Volume 7, Nomor 4, November 2024
Publisher : Prodi Sarjana Teknik Sipil, FT, Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/jmts.v7i4.31227

The current condition of cement industry is rapidly growing. Limestone, one of the main ingredients in portland cement is non-renewable. An innovation that can reduce the use of cement is rice husk ash. Rice husk ash is classified as pozzolan, it has 87-97% silica content, the basis for using rice husk ash as a partial substitute for cement. The research aimed to determine the effect of rice husk ash substitution on SCC characteristics and the maximum compressive strength. This research used experimental method. Cylindrical test piece 10 x 20 cm, plan quality fc’ 35 MPa. Variations of rice husk ash added were 6%, 8%, 10%, 12%, and 14% by weight of cement. The results of testing the characteristics of SCC at variations of ASP6%, ASP8%, and ASP10% meet the standards of EFNARC 2005. ASP12% and ASP14% do not encounter the T500 and V-Funnel testing requirements. The compressive strength of SCC increases up to 10% variation, with values of 37.174 MPa, 38.872 MPa, and 41.839 MPa. At 12% and 14% variations, the compressive strength decreased values of 39.670 MPa, and 37.034 MPa. The maximum compressive strength was obtained in the ASP10% an increase of 17,15%. Abstrak Kondisi industri semen masa kini berkembang dengan sangat cepat. Batu kapur ialah sumber daya alam yang tidak bisa diperbaharui, yang menjadi salah satu bahan utama pembuatan semen. Penggunaan abu sekam padi menjadi inovasi yang dapat dilakukan untuk mengurangi penggunaan semen. Abu sekam padi digolongkan sebagai pozzolan karena memiliki karakteristik yang halus dan kandungan silika sebesar 87-97%, hal ini menjadi dasar penggunaan abu sekam padi sebagai subtitusi parsial semen. Tujuan penelitian dilakukan guna meninjau pengaruh substitusi abu sekam padi terhadap karakteristik beton SCC dan kuat tekan maksimum. Penelitian menggunakan metode eksperimen. Bentuk benda uji berbentuk silinder 10 x 20 cm, mutu rencana fc’ 35 MPa. Variasi abu sekam padi yang ditambahkan sejumlah 6%, 8%, 10%, 12%, dan 14% terhadap berat semen. Hasil pengujian karakteristik beton SCC pada variasi ASP6%, ASP8%, dan ASP10% memenuhi standar dari EFNARC 2005. Untuk variasi ASP12% dan ASP14% tidak memenuhi standar pada pengujian T500 dan V-Funnel. Kuat tekan beton SCC meningkat sampai variasi 10%, dengan nilai 37,174 MPa, 38,872 MPa, dan 41,839 MPa. Pada variasi 12% dan 14% kuat tekan beton SCC kembali menurun dengan nilai 39,670 MPa, serta 37,034 MPa. Kuat tekan maksimum didapatkan pada variasi ASP10% dengan kenaikan sebesar 17,15%.

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