Judul: Analisis Produktivitas Pekerjaan Pondasi Sistem Inner boring (Studi Kasus Proyek The Maj Collections-Bandung)
Abstrak: Produktivitas suatu pekerjaan dihitung dari segi biaya, mutu, dan waktu. Penelitian ini bertujuan mengetahui prinsip dasar dan risiko sistem inner boring, besarnya produktivitas dan faktor-faktor yang mempengaruhinya, serta membandingkan sistem inner boring dengan bored pile. analisis dilakukan dengan metode unit completed dan multiple regression. Berdasarkan hasil penelitian, sistem inner boring merupakan sistem pengeboran yang dilakukan bersamaan dengan dimasukkannya pile material ke lubang pengeboran dan penyemprotan ujung pile saat di dasar lubang. Kehilangan jam kerja dipengaruhi oleh faktor pekerja (47.67%), alat (21.29%), material (15.6%), manajemen (13.21%, dan lingkungan (2.22%). Hasil penelitian menunjukkan bahwa nilai produktivitas sistem bored pile lebih besar dibandingkan inner boring, tetapi nilai produktivitas optimal sistem inner boring lebih besar dibandingkan bored pile. Kekuatan daya dukung inner boring lebih besar dari bored pile dan waktu penyelesaian inner boring lebih cepat dibandingkan bored pile. Biaya untuk inner boring lebih mahal dibandingkan untuk bored pile.
Keyword: metode unit completed, bored pile, pondasi, produktivitas, sistem inner boring

Judul: Analisis Daya Dukung dan Pemodelan Struktur Pondasi Bored Pile Bangunan Penghubung antar Gedung RSBA Jakarta Timur.
Abstrak: Modeling of a building can be shows by two dimension (2D), three dimension (3D), and four dimension (4D). Modeling proceses when planning or post construction purposed to get more detail information about the structures. Bored pile are used to support and transmitted the upper load to underlying a stronger soil layer. The structures must be design by safety factor that determined so that the structures are safe to cover the overload possibility. The study aims to analyze and modeling the bored pile foundation of connecting building. The methods are data collection, modeling, analysis upper and down structures, and showing the result. Software Tekla Structures and SAP2000 are merged to modeling and analysis. The study started at February to June 2015 in Jakarta and IPB Campus. Foundation, column, beam, slab and reinforced will modeling by Tekla Structures 17. Result of analysis shows that foundation calculated base on SPT data. Meanwhile, value of safety factor K4a and K4b columns are higher than SF standard (2,5). Settlement of group foundation is 11,97 mm, and still below of permitted settlement 80 mm.
Keyword: Analysis, Bored Pile, Foundation, Modeling

Judul: Sintesis Krisin dari Floroglusinol
Abstrak: Flavone is a class of flavonoid, widely distributed in vascular plants. Flavones containing hydroxyl groups at 5 and 7 position are quite important regarding their biological activities and their abiquity in nature. Flavone having hydroxyl groups only at position 5 and 7 or 5,7-dihydroxyflavone is known as chrysin. In this study, crude chrysin had been successfully synthesized in 3 steps from phloroglucinol as starting material. Phloroglucinol was acetylated with acetonitrile and HCl gas, resulting phloroacetophenone amount to 74%. Phloroacetophenone benzoylation with 4.5 equivalents of benzoyl chloride produced tribenzoyl phloroacetophenone in 103–107% of yield and the subsequent Baker-Venkataraman rearrangement of the ester by using KOH in dried pyridine produced crude chrysin, with conversion percentage of 71.62%. All synthetic products had been characterized by melting point and spectroscopically.
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