scholarly journals EVALUASI GEDUNG ARSIP POLITEKNIK NEGERI JAKARTA SESUAI SNI 1726-2019 DAN SNI 2847-2019

2021 ◽  
Vol 3 (1) ◽  
pp. 51-56
Author(s):  
Yanuar Setiawan ◽  
Bima Ryanto ◽  
Mikha Geraldine ◽  
Rinawati Rina

The purpose of this research is to recalculate the upper structure of the X building of Jakarta State Polytechnic uses SNI-2847-2019 regulations regarding concrete and SNI 1726- 2019regarding earthquakes. This building consists of 3 floors which use concrete as its main structure. Recalculation includes structural elements starting from collar beam, floor plates, beams, and columns, which are expected to withstand the loads who worked on it. Structural analysis was performed using the ETABS 2013 software. Especially for the calculation of the column structure, the SP Column software is used. The results were obtained from the recalculation of the PNJ x Building in the form of dimensional differences and reinforcement against the existing building. Dimension and reinforcement after redesign became more the size of the existing building. The recalculation results indicate that planning re-using SNI 1726-2019 and SNI 2847-2019 are strong to bear the working load after the dimensions and reinforcement are enlarged.

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Kleio Avrithi ◽  
Harrison Hyung Min Kim

Optimization of piping supports is a well-known problem. The paper considers the optimization of piping supports with respect to cost and the loads transmitted to the supporting structural elements, when the orientation of the supporting structure is to be determined. This is the case, when new structural elements need to be added to the existing building structure to support components and piping systems that come as a new addition to a nuclear plant. The analytical target cascading (ATC) method is used for the optimization, combining the support loads from different piping analyses in a hierarchical framework. It is shown that the ATC method can be used for an optimized location of structural elements simultaneously supporting complex piping systems and implemented in a structural analysis software.


2020 ◽  
Vol 15 (1) ◽  
pp. 37-44
Author(s):  
El Mehdi Echebba ◽  
Hasnae Boubel ◽  
Oumnia Elmrabet ◽  
Mohamed Rougui

Abstract In this paper, an evaluation was tried for the impact of structural design on structural response. Several situations are foreseen as the possibilities of changing the distribution of the structural elements (sails, columns, etc.), the width of the structure and the number of floors indicates the adapted type of bracing for a given structure by referring only to its Geometric dimensions. This was done by studying the effect of the technical design of the building on the natural frequency of the structure with the study of the influence of the distribution of the structural elements on the seismic response of the building, taking into account of the requirements of the Moroccan earthquake regulations 2000/2011 and using the ANSYS APDL and Robot Structural Analysis software.


2014 ◽  
Vol 86 (3) ◽  
pp. 1101-1113 ◽  
Author(s):  
FABRÍCIO A. CAXITO ◽  
ALEXANDRE UHLEIN ◽  
LUIZ F.G. MORALES ◽  
MARCOS EGYDIO-SILVA ◽  
JULIO C.D. SANGLARD ◽  
...  

The Rio Preto fold belt borders the northwestern São Francisco craton and shows an exquisite kilometric doubly-vergent asymmetric fan structure, of polyphasic structural evolution attributed exclusively to the Brasiliano Orogeny (∼600-540 Ma). The fold belt can be subdivided into three structural compartments: The Northern and Southern compartments showing a general NE-SW trend, separated by the Central Compartment which shows a roughly E-W trend. The change of dip of S2, a tight crenulation foliation which is the main structure of the fold belt, between the three compartments, characterizes the fan structure. The Central Compartment is characterized by sub-vertical mylonitic quartzites, which materialize a system of low-T strike slip shear zones (Malhadinha – Rio Preto Shear Zone) crosscutting the central portion of the fold belt. In comparison to published analog models, we consider that the unique structure of the Rio Preto fold belt was generated by the oblique, dextral-sense interaction between the Cristalândia do Piauí block to the north and the São Francisco craton to the south.


2018 ◽  
Vol Volume-2 (Issue-3) ◽  
pp. 1132-1151
Author(s):  
Potharaboyena Vinay ◽  
Kurimilla Srilaxmi ◽  

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Syed Razaul Haq ◽  
Sabeen Survery ◽  
Fredrik Hurtig ◽  
Ann-Christin Lindås ◽  
Celestine N. Chi

Abstract The origin of the eukaryotic cell is an unsettled scientific question. The Asgard superphylum has emerged as a compelling target for studying eukaryogenesis due to the previously unseen diversity of eukaryotic signature proteins. However, our knowledge about these proteins is still relegated to metagenomic data and very little is known about their structural properties. Additionally, it is still unclear if these proteins are functionally homologous to their eukaryotic counterparts. Here, we expressed, purified and structurally characterized profilin from Heimdallarchaeota in the Asgard superphylum. The structural analysis shows that while this profilin possesses similar secondary structural elements as eukaryotic profilin, it contains additional secondary structural elements that could be critical for its function and an indication of divergent evolution.


Urban Science ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 87
Author(s):  
Orlando Barraza ◽  
Miquel Estrada

Structural analysis in a transit network is a key aspect used to evaluate in a planning process. In this sense, the use of network science was applied in this work to generate a framework of the main structural features of a transport network. In this case, an alternative transport network in Guadalajara, Mexico was taken as an example. The network properties selected were grade of accessibility, spatial friction, and vulnerability. In the case of the grade of accessibility, this propriety makes reference to the efficiency of the travel time that the network gives due to its structural features. The spatial friction measures how direct in terms of distance the trips that the network provides are, and the vulnerability relates to the ease with which the network can comprise its performance by affectations to their nodes or links. In this sense, this work presents a detailed methodology and a set of open-source tools that can be used to measure these key structural elements for decision making.


1960 ◽  
Vol 64 (596) ◽  
pp. 493-495 ◽  
Author(s):  
J. H. Argyris ◽  
S. Kelsey

In a Technical Note in the June Journal (p. 354), Dr. A. L. M. Grzedzielski discusses some aspects of the Matrix Force Method of Structural Analysis and in particular has raised objections to the concept of initial strains and its use by the present writers as an artifice in the treatment of cut-outs and modifications in structures. Dr. Grzedzielski asserts that the idea of initial strains is not valid if the flexibility matrix of the unassembled structural elements is other than purely diagonal. Unfortunately this assertion is just not true.


2012 ◽  
Vol 204-208 ◽  
pp. 881-884
Author(s):  
Yong Shuai Cao ◽  
Yong Sheng Zhang

Aiming at a practical engineering case of a subway station, the paper uses the common software ANSYS as its analysis tool and uses the load structure method to do simulation analysis on the station's main structure. The results indicate that this method is practicable and has certain reference value for engineering design.


2021 ◽  
pp. 875529302110095
Author(s):  
Juan F Fung ◽  
Siamak Sattar ◽  
David T Butry ◽  
Steven L McCabe

This article presents the current state-of-practice with respect to quantifying the total cost to retrofit an existing building. In particular, we combine quantitative, qualitative, and heuristic data to provide a taxonomy for understanding the direct and indirect costs associated with seismic risk mitigation. Much of the literature to date has focused on estimating structural retrofit costs, the costs of retrofitting the structural elements of a building. In contrast, there is very little research or data on the remaining cost components of the total cost. We propose using structural cost as the foundation for approximating the remaining cost components and the total cost itself. To validate our findings, we compare the proposed approximations with actual cost estimates developed by engineering professionals.


2016 ◽  
Vol 3 (1) ◽  
Author(s):  
Salvatore Brischetto ◽  
Alessandro Ciano ◽  
Carlo Giovanni Ferro

AbstractThe present paper shows an innovative multirotor Unmanned Aerial Vehicle (UAV) which is able to easily and quickly change its configuration. In order to satisfy this feature, the principal structure is made of an universal plate, combined with a circular ring, to create a rail guide able to host the arms, in a variable number from 3 to 8, and the legs. The arms are adjustable and contain all the avionic and motor drivers to connect the main structure with each electric motor. The unique arm design, defined as all-in-one, allows classical single rotor configurations, double rotor configurations and amphibious configurations including inflatable elements positioned at the bottom of the arms. The proposed multi-rotor system is inexpensive because of the few universal pieces needed to compose the platform which allows the creation of a kit. This modular kit allows to have a modular drone with different configurations. Such configurations are distinguished among them for the number of arms, number of legs, number of rotors and motors, and landing capability. Another innovation feature is the introduction of the 3D printing technology to produce all the structural elements. In this manner, all the pieces are designed to be produced via the Fused Deposition Modelling (FDM) technology using desktop 3D printers. Therefore, an universal, dynamic and economic multi-rotor UAV has been developed.


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