The first initial investigation is carried out by studying several precedents adapted from the rationalist and modern movement eras. The discussion starts with a question regarding why most office buildings use the international style as their building expression. International style has architectural characteristics such as a simple form, pure structure, simple geometry, glass wall facade, and form follows function. This style mostly shows a need for more identity that responds to local values and expressions. The architectural buildings become placeless and do not represent the place with specific environmental responses and identity (contextual architecture). Additionally, an office building should be able to respond to the users' activities and their identities/characters. This paper is based on the process of a design project, from design thinking, research, and design process to conceptual design proposal. Design thinking is started by asking the question, "what if" the new building design proposal reverses the international style's facts through literature studies? The goals are to create the latest concepts that express their character and image to portray both the users' characters and the location, which is human and environmentally friendly, using contextual analysis. Next, the design process includes explaining and arguing the process, from proposing the design concept to building transformation. Some methods are used to determine the 'big idea' and design criteria and parameters, including the first principle, domain-to-domain transfer, and the site response. The design proposal expresses the building's heritage and its atmosphere, users' characteristics, and low energy efficiency. The design results highlight the "value of the site" and "character of the building user," which are essential to creating the building image and identity.
In several big cities in Indonesia, there are numerous cases of abandoned buildings due to delays in the construction process. Some of these buildings even remain abandoned and underused for an extended period. In line with this condition, cities experience a high level of urbanization that cause places tremendous pressure on urban spaces, especially green open spaces. This paper discusses Parasitic Architecture as an alternative design approach to address this issue. It proposes to use abandoned buildings as public facilities and is presented in sections. First, it reviews the concepts and principles of Parasitic Architecture, followed by observational studies using a contextual analysis to explore the context and function of abandoned buildings. The exploration results indicate a potential to apply Parasitic Architecture's concepts and principles in redesigning abandoned buildings and turning them into public facilities, particularly into green open spaces. In this context, the paper views Parasitic Architecture plays a vital role in providing innovative spatial and structural configurations to reorient the use of unused buildings for public functions.Keywords: abandoned building; contextual analysis; parasitic architecture; green open space AbstrakDi beberapa kota besar di Indonesia, banyak kasus bangunan terbengkalai akibat adanya kemunduran dalam proses konstruksi. Beberapa dari bangunan tersebut malahan terlalaikan dan tidak dimanfaatkan dalam jangka waktu yang lama. Seiring dengan permasalahan ini, kota-kota besar mengalami peningkatan jumlah urbanisasi yang menyebabkan ruang perkotaan semakin berkurang termasuk untuk ruang terbuka hijau kota. Paper ini membahas bagaimana parasitic architecture digunakan sebagai pendekatan perancangan untuk merespon permasalahan dengan memanfaatkan bangunan terbengkalai agar dapat berfungsi kembali dan dijadikan sebagai fasilitas atau ruang publik. Pertama, dilakukan kajian teori tentang konsep dan prinsip parasitic architecture, dilanjutkan dengan mengeksplorasi konteks dan fungsi bangunan terbengkalai melalui studi observasi dengan analisis kontekstual. Hasil eksplorasi menjelaskan terdapat potensi untuk menerapkan konsep dan prinsip parasitic architecture dalam perancangan kembali bangunan terbengkalai menjadi fasilitas publik, khususnya ruang terbuka hijau. Dalam konteks ini, parasitic architecture dipandang sebagai pendekatan perancangan berperan penting dalam pengadaan konfigurasi ruang dan struktur inovatif yang mampu mengalihkan bangunan terbengkalai menjadi ruang berfungsi publik. Kata kunci: bangunan terbengkalai; analisis kontesktual; parasitic architecture; ruang terbuka hijau
Dalam mengatasi permasalahan korosi, maka perlu adanya perbaikan korosi secara altenatif, yakni pencegahan korosi dengan menggunakan inhibitor korosi. Inhibitor organik yang dapat dijadikan sebagai inhibitor korosi adalah Puntung rokok, karena mengandung banyak nikotin. Nikotin dapat dijadikan sebagai inhibitor dengan cara mendonorkan atom nitrogen pada nikotin kepada atom Fe2+ sehingga terbentuk senyawa kompleks [Fe (NH3)6]2+. Senyawa ini memiliki kestabilan yang lebih tinggi dari pada Fe sehingga dapat digunakan sebagai proteksi dalam korosiTujuan dari penelitian ini adalah mengatasi masalah puntung rokok dengan menjadikannya sebagai inhibitor korosi untuk meminimalisir biaya penggantian bahan, perawatan, dan over design pada Jacket Platform. Penelitian ini merupakan eksperimen dengan mengunakan material uji baja ASTM A36. Material akan diblasting terlebih dahulu dengan material abrasif berjenis Steel Grid 26 sesuai dengan standar ASTM A36 G31-72. Dilanjutkan dengan proses coating, dengan mencampurkan cat epoxy dan ektraksi puntung rokok, kemudian direndam dengan medium korosif, yaitu air Laut Kenjeran. Pengujian laju korosi yang dilakukan menggunakan metode pengurangan berat, dimana semakin tinggi berat yang berkurang maka semakin tinggi laju korosi yang terjadi. Berdasarkan penelitian ini dapat disimpulkan bahwa kadar nikotin yang dapat digunakan sebagai cathodic protection pada coating.
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