EVALUATION OF SEKOLAH ISLAM TERPADU (SIT) ALIYA BOGOR BUILDING STRUCTURE SYSTEM BASED ON THE REQUIREMENTS OF SNI 2847:2019

<p class="ListParagraph1">Sekolah Islam Terpadu (SIT) Aliya Bogor is located in west Bogor district, Bogor city, West Java, was founded in 200, thus the standards used by planning consultant in building planning using old standard, where these standards have been updated with current standard, namely SNI 2847:2019. The evaluation carried out in this study based on requirements SNI 2847:2019 knowing the outcome of building that was said to be safe used help software ETABS) and SpColumn. Length of building of Umar Bin Khatab A and B are 18,60 meter;23,65 meter.Building area of building Umar Bin Khatab A and B are 541,26 m²; 865,59 m². Concrete quality assessment (fc’) that came from the test of hammer test column elements, beam elements, and plate elements as big 23,74 Mpa;26,59 Mpa;26,59 Mpa. After analysis some of to experience overstrength. The original column dimension In Building of Umar Bin Khatab A was K25x25 with shear reinforcement is Ø16-150 enlarge to K40x40 with shear reinforcement is Ø39-150 and beam dimension 20x40 enlarge to 35x55. On the building of Umar Bin Khatab B was K25x25 with shear reinforcement Ø16-150 enlarge to K40x40 with shear reinforcement Ø25-150, with the original beam dimension 20x40 enlarge to 30x55. The cost budget in the building of Umar Bin Khatab A is Rp 74.158.600,00 and in building of Umar Bin Khatab B is Rp 61.084.600,00.</p>

MODIFIKASI STRUKTUR GEDUNG DENGAN BETON PRACETAK PADA APARTEMEN THE CONEXIO

The Conexio Appartements in actual condition are designed using conventional reinforced concrete method and does not have good quality. While in the project also often afected by the weather. The use of precast concrete are having some excellence of them are not affected by the weather, well maintained quality, and earthquake resistant. The connection between the precast elements play an important role in precast buildings to make the buildings resistant to earthquake. This modification is intended to created earthquake resistant precast building according to SNI 2847:2013 with good quality control. In this study, the building will be modified into 8 floors precast building as planned and reviewed which will be analyzed by ETABS. From the results of the modification according to SNI 1726:2012 and SNI 2847:2013 we obtained, main beam dimension 40x60cm, secondary beam 35x55 cm, column dimension 65x65 cm, overtopping 6 cm for slab and using Splice sleeve grout for column to column connection, lap splices 500mm for beam-column connection, and 30x40cm for concrete consol dimension.Keywords : Precast, Splice Sleeve, Wet Connection.Abstrak Apartemen The Conexio pada kondisi sebenarnya dirancang menggunakan metode konvensional dengan kondisi mutu yang kurang baik. Dalam pelaksanannya, proyek tersebut juga sering terganggu oleh cuaca. Penggunaan beton pracetak memiliki beberapa keunggulan diantaranya pelaksanaannya tidak terpengaruh oleh cuaca, memiliki mutu yang terjaga dan tahan gempa. Sambungan antar elemen pracetak sangat berperan penting dalam bangunan dengan beton pracetak yang tahan gempa sehingga perlu diperhitungkan sesuai dengan peraturan. Modifikasi ini ditujukan untuk menghasilkan gedung dengan pracetak yang tahan gempa sesuai dengan SNI 2847:2013 dengan pengendalian mutu yang baik. Dalam studi ini, gedung tersebut akan dilakukan modifikasi struktur menjadi beton pracetak dengan tinjauan 8 lantai dan analisa dibantu dengan software ETABS. Dari hasil modifikasi yang dilakukan, elemen-elemen pracetak sesuai dengan ketentuan SNI 1726:2012 dan SNI 2847:2013 yaitu meliputi ukuran balok induk 40x60cm, ukuran balok anak 35x55 cm, dengan kolom berdimensi 65x65 cm, tebal overtopping 6 cm pada pelat dan menggunakan Splice sleeve grout pada sambungan kolom, penyambungan balok-kolom dengan panjang penyaluran 500 mm dan penggunaan konsol pada kolom dengan dimensi 30x40cm. Kata kunci : Beton Pracetak, Splice Sleeve, Sambungan Basah.

Behaviour of Two Storey RC Frame Subjected to Lateral Load

Reinforced concrete (RC) bare frames are being used to resist lateral loads.These frames behaviour is depending on stiffness of frames and materials used.A two storey RC bare frame with single bay is tested for lateral loading at beam column joint in each storey.The dimension of the specimen such as beam, column and exterior, interior and top corner beam – column joints were designed as per IS: 13920-1993 recommendations. The test specimen was reduced to 1/4th scale to suit the loading arrangement and test facilities. Prototype specimen had beam dimensions of 230 mm x 350 mm including the slab thickness and column dimension of 300 mm x 300 mm. The dimensions of beam and column were made as 170 mm x 120 mm and 200 mm x 120 mm respectively. The length of the beam for the test specimen was 1200mm. The height of the column for test specimen was 1000mm.RC frame was cast, as bare frame. The RC frame was subjected to lateral load and the behaviour of frames was studied till failure.Important parameters such as capacity of frame, energy absorption and ductility were determined.

An approach to enhance pnetCDF performance in environmental modeling applications

Data intensive simulations are often limited by their I/O (input/output) performance, and "novel" techniques need to be developed in order to overcome this limitation. The software package pnetCDF (parallel network Common Data Form), which works with parallel file systems, was developed to address this issue by providing parallel I/O capability. This study examines the performance of an application-level data aggregation approach which performs data aggregation along either row or column dimension of MPI (Message Passing Interface) processes on a spatially decomposed domain, and then applies the pnetCDF parallel I/O paradigm. The test was done with three different domain sizes which represent small, moderately large, and large data domains, using a small-scale Community Multiscale Air Quality model (CMAQ) mock-up code. The examination includes comparing I/O performance with traditional serial I/O technique, straight application of pnetCDF, and the data aggregation along row and column dimension before applying pnetCDF. After the comparison, "optimal" I/O configurations of this application-level data aggregation approach were quantified. Data aggregation along the row dimension (pnetCDFcr) works better than along the column dimension (pnetCDFcc) although it may perform slightly worse than the straight pnetCDF method with a small number of processors. When the number of processors becomes larger, pnetCDFcr outperforms pnetCDF significantly. If the number of processors keeps increasing, pnetCDF reaches a point where the performance is even worse than the serial I/O technique. This new technique has also been tested for a real application where it performs two times better than the straight pnetCDF paradigm.

An approach to enhance pnetCDF performance in environmental modeling applications

Data intensive simulations are often limited by their I/O performance, and novel techniques need to be developed in order to overcome this limitation. The software package, pnetCDF which works with parallel file systems, was developed to address this issue by providing parallel I/O capability. This study examines the performance of a novel approach which performs data aggregation along either row or column dimension of MPI processes on a spatially decomposed domain, and then applies the pnetCDF parallel I/O paradigm. The test was done with three different domain sizes which represent small, moderately large, and large data domains, using a small-scale Community Multi-scale Air Quality model (CMAQ) mock-up code. The examination includes comparing I/O performance with traditional serial I/O technique, straight application of pnetCDF, and the data aggregation along row and column dimension before applying pnetCDF. After the comparison, "optimal" I/O configurations of this novel approach were quantified. Data aggregation along the row dimension (pnetCDFcr) works better than along the column dimension (pnetCDFcc) although it may perform slightly worse than the straight pnetCDF method with a small number of processors. When the number of processors becomes larger, pnetCDFcr out performs pnetCDF significantly. If the number of processors keeps increasing, pnetCDF reaches a point where the performance is even worse than the serial I/O technique. This new technique has also been tested for a real application where it performs two times better than the straight pnetCDF paradigm.

Characterizing Gaseous Flow in Submicron Chromatography Columns

Enormous interest exists to develop the next generation of an integrated microsystem for chemical and biological analysis (μChemLab™) and to further reduce the volume of the system. One approach is to scale down the size of critical components and to explore any pumping mechanism that can minimize the power requirement. Since the majority of the pumping requirement is to overcome the wall resistance in the gas chromatography (GC) column, our attention is to study the gas flow in this GC column. As the column dimension decreases, the gaseous flow will go from a continuum regime into a non-continuum regime; i.e., slip, transition, and free molecular regimes. Thus it is very important to well characterize the gaseous flow in submicron columns and to understand its flow behavior. Specifically, in this study, our focus is to investigate the effects of viscosity, rarefaction, and compressibility as the column dimension decreases. Both theoretical predictions and experimental results will be presented.