scholarly journals Studi Perbandingan Kinerja Sistem Struktur Setback berdasarkan Metode ATC 40, FEMA 356 dan SNI 1726:2012

2021 ◽  
Vol 1 (1) ◽  
pp. 47-58
Author(s):  
Elias G Arman ◽  
Remigildus Cornelis ◽  
Tri M Sir
Keyword(s):  
Damage Control ◽  
Performance Level ◽  
The Other ◽  
Structural System ◽  
Floor Level ◽  
Structure System ◽  
Other Hand ◽  
Fema 356 ◽  
Immediate Occupancy

The aim of this study was to compare the performance level of the setback structure system and the non-setback structural system using the ATC-40, FEMA 356 and SNI 1726-2012 methods. The non-setback structure have the shortest span of 15 m, the longest span of 20 m and the level of each floor was 3.5 m but the setback structure have setback system on the longest span of 10 m at the 5th and 6th floor level. The results showed that the performance level based on all methods of the sectback structure system is at the immediate occupancy level while the non-setback structure system, based on SNI 1726-2012, the performance level is immediate occupancy for the longest span and the shortest span is damage control. On the other hand, based on the ATC-40 and FEMA 356 methods, the performance level of the non-setback structure is at the immediate occupancy level. Drift on non-setback buildings based on the SNI 1726-2012 method is 0.011, based on the ATC-40 method is 0.007, and based on FEMA 356 is 0.005. Drift on the setback building based on the SNI 1726-2012 method is 0.010, based on the ATC-40 method is 0.006, and based on FEMA 356 is 0.004.

scholarly journals Evaluasi Geser Dasar Minimun pada SNI 1726-2012

2019 ◽  
Vol 10 (2) ◽  
pp. 166-184
Author(s):  
Johnny Setiawan ◽  
Iswandi Imran
Keyword(s):  
Linear Time ◽  
Damage Control ◽  
Time History ◽  
Time History Analysis ◽  
Performance Level ◽  
Life Safety ◽  
Base Shear ◽  
History Analysis ◽  
Story Drift ◽  
Immediate Occupancy

Terdapat cukup banyak perubahan pada SNI 1726-2012, salah satunya adalah adanya persyaratanbatas geser dasar minimum (minimum base shear) yang tidak ada pada peraturan sebelumnya.Metode yang akan dilakukan adalah bangunan gedung dengan klasifikasi ketinggian rendah,sedang dan tinggi akan dianalisis dengan menerapkan geser dasar minimum dan tanpa geser dasarminimum. Analisis yang akan digunakan adalah analisis ragam spektrum respons (ResponsSpectrum Analysis, RSA), analisis respons riwayat waktu (Time History Analysis, THA) dananalisis respons riwayat waktu non linier (Non Linear Time History Analysis, NLTHA). Hasilanalisis menunjukkan bahwa pada peraturan SNI 1726-2012 dengan adanya persyaratan batasangeser dasar minimum dapat menjamin kinerja struktur sesuai dengan yang diharapkan.Kekhawatiran adanya batasan geser dasar minimum pada SNI 1726-2012 akan membuat desainmenjadi tidak ekonomis, ternyata tidak terbukti karena tidak memberikan pengaruh signifikanpada hasil desain, khususnya untuk bangunan dengan kategori ketinggian rendah dan sedang.Untuk bangunan dengan klasifikasi bangunan tinggi, analisis dan desain dengan memperhitungansyarat batasan geser dasar minimum dan tanpa memperhitungkan geser dasar minimum dapatmemberikan hasil desain yang baik, tetapi pengecekan pada Level Kinerja (Performance Level)sesuai dengan story drift menunjukkan bahwa analisis dengan memperhitungkan syarat geser dasarminimum memberikan hasil dengan level kinerja yang cukup baik yaitu Immediate Occupancy(IO) hingga Damage Control (DO), sedangkan tanpa memperhitungkan geser dasar minimummemberikan hasil dengan level kinerja yang kurang baik yaitu Life Safety (LS) hingga StructuralStability (SS). Sedangkan pada level kinerja elemen struktur, analisis tanpa memperhitungkangeser dasar minimum menyebabkan banyak elemen struktur yang berada pada level kinerjaCollapse Prevention (CP).

scholarly journals Compare and Contrast the Two Approaches: The ‘Conventional Approach’ and the ‘Computational Approach’ Described by Stiny and Mitchell 1978, for Analyzing an Architectural Style

2019 ◽  
Vol 7 (1) ◽  
pp. 19-34
Author(s):  
Nujaba Binte Kabir
Keyword(s):  
Construction Method ◽  
Computational Approach ◽  
Conventional Approach ◽  
The Other ◽  
Structural System ◽  
Architectural Style ◽  
Other Hand ◽  
Compare And Contrast

Architectural historians have focused more on traditional analysis of a style on the basis of concept, compositional order, construction method, structural system and much more. This approach can be called as ‘Conventional approach’. On the other hand the ‘Computational approach’, which was described by George Stiny and William J. Mitchell in 1978, can regenerate new design of a particular style by analyzing the characteristics of that style. The question is how these two approaches conflict with each other and how they can be compared with each other. The aim of this paper is to find out Keywords: the differences and comparisons between these two approaches with explanation of some examples.

Automotive Lifts: Unrestrained vs. Restrained Swing Arms

2009 ◽  
Author(s):  
Ralph L. Barnett ◽  
John B. Glauber
Keyword(s):  
Risk Taking ◽  
Horizontal Plane ◽  
The Other ◽  
Structural Behavior ◽  
Horizontal Force ◽  
Structural System ◽  
Theoretical Possibility ◽  
Other Hand ◽  
Bending Resistance ◽  
Practical Reality

To perform automotive maintenance, there are many makeshift ways of lifting and holding a vehicle including the use of forklifts, overhead hoists and cranes, jacks of every kind, jack stands and various ramp systems. When automobiles fall from these devices, the causes are usually obvious and we disapprovingly tolerate the risk taking. On the other hand, when a vehicle falls from a dedicated automotive lift, the accident is entirely unacceptable. This paper examines several hidden dangers associated with a particular class of lifts that are “frame engaging.” Various styles of these lifts use four cantilevered arms to elevate and support vehicles on adapter pads positioned on the arms’ free ends. If the vehicle slides off of one or more pads, it usually falls catastrophically. The cantilevered arms, when raised, are supposed to be restrained against rotation in a horizontal plane. When restrained, the arms provide a robust structural system for resisting horizontal workplace forces that tend to slide vehicles off the pads. The arms maintain the horizontal locations of the adapters by developing bending and axial planar resistance. If, on the other hand, the arms are free to pivot due to sloth or poor design, their structural behavior is dramatically transformed. The planar bending resistance of the arms completely disappears and they become direct stress diagonal truss members; the vehicle itself unwittingly becomes the truss’ tension chord. The appearance of the fixed and pivoting systems is the same; however, the truss action magnifies the horizontal forces acting on the adapter pads increasing the slip probability. Indeed, depending on the orientation of the pivoting swing arms, any finite horizontal force applied to a vehicle may lead to an unbounded tangential “slide-out” force. This is, of course, a theoretical possibility, not a practical reality.

An Approach towards Improving the Robustness of Production Systems

2014 ◽  
Vol 1018 ◽  
pp. 461-468 ◽  
Author(s):  
Nicole Stricker ◽  
Gisela Lanza
Keyword(s):  
Production Systems ◽  
Performance Level ◽  
The Other ◽  
Working Process ◽  
Crucial Feature ◽  
Other Hand ◽  
Robust System ◽  
And Performance ◽  
The One

Robustness becomes a crucial feature of production systems. On the one hand, the systems are subject to many disturbances and on the other hand, a reliable production is demanded. A robust system shall be able to keep the working process on a good performance level despite occurring disturbances. To enable such a system’s behaviour, different actions have to be taken. The paper presents an approach to identify the best action to improve a system’s robustness on an operational and tactical level by investigating its disturbances and performance.

scholarly journals Analisis Kinerja Struktur Bangunan Rumah Tinggal dengan Kayu Glulam Mahoni

2020 ◽  
Vol 3 (3) ◽  
Author(s):  
Nessa Valiantine Diredja ◽  
Erma Desmaliana ◽  
Raca Prasetyo
Keyword(s):  
Program Analysis ◽  
Damage Control ◽  
Pushover Analysis ◽  
Residential Building ◽  
Performance Level ◽  
National Standard ◽  
Preliminary Design ◽  
Beam Size ◽  
Safety Requirements ◽  
Immediate Occupancy

ABSTRAK Rumah merupakan salah satu bangunan gedung yang harus memenuhi persyaratan keselamatan. Untuk memenuhi persyaratan keselamatan tersebut maka dalam perancangannya perlu mengikuti pedoman dan standar yang berlaku. Penelitian ini menganalisis kinerja struktur bangunan rumah tinggal kayu glulam dari kayu Mahoni berdasarkan Standar Nasional Indonesia (SNI) 7973:2013 dan Eurocode menggunakan program SAP2000. Dari hasil preliminary design didapatkan dimensi balok dengan ukuran 170 x 340 mm dan kolom berukuran 300 x 400 mm untuk SNI dan balok berukuran 270mm x 550 serta kolom berukuran 450 x 600 mm untuk Eurocode. Hasil analisis program SAP2000 menunjukan bahwa kinerja struktur kedua bangunan telah memenuhi syarat ketahanan gempa yaitu perioda struktur, simpangan ijin, dan nilai minimum ragam alami struktur. Berdasarkan hasil analisis non-linier pushover didapatkan bahwa bangunan rumah tinggal termasuk dalam kategori tingkat kinerja Damage Control untuk SNI, sedangkan bangunan rumah tinggal berdasarkan Eurocode termasuk kedalam kategori tingkat kinerja Immediate Occupancy. Kata Kunci: Kayu glulam, Mahoni, SNI 7973:2013, Eurocode, Kinerja Struktur ABSTRACT Basically a house is a building that must meet safety requirements. To meet these safety requirements, in its design it is necessary to follow applicable guidelines and standards. This study analyse the structure performance of glulam residential building from Mahogany wood based on Indonesian National Standard (SNI) 7973:2013 and Eurocode using SAP2000 Program. Based on preliminary design, different dimensions of structural elements are obtained, which is beam size 170 x 340 mm and column size 300 x 400 mm for SNI and beam size 270 x 550 mm and column size 450 x 600 mm for Eurocode. SAP2000 program analysis showed that the performance of the structures of two building has met the earthquake resistance requirements such as period of structure, story drift and minimum value of modal participation ratio. Based on the result of non-linear pushover analysis, the SNI residential building were included in the Damage Control Performance level category, while Eurocode residential building were included in the category of Immediate Occupancy performance level. Keywords: Glulam wood, Mahony, SNI 7973:2013, Eurocode, Level of Performance

scholarly journals ANALYSIS OF VARIATIONS IN PROFITABILITY AND INDEBTEDNESS OF AGRICULTURAL COMPANIES IN AP VOJVODINA

2019 ◽  
pp. 161
Author(s):  
Vera Mirović ◽  
Branimir Kalaš ◽  
Kristina Mijić
Keyword(s):  
Agricultural Sector ◽  
Performance Level ◽  
The Other ◽  
Net Income ◽  
Return On Assets ◽  
Return On Equity ◽  
Other Hand ◽  
Significant Difference

The measurement of agricultural companies in terms of profitability and indebtedness enables a real determination of role and position of these companies in the agricultural sector in AP Vojvodina. The aim of the paper is to show the presence or absence of significant difference in the performance level of agricultural companies from the aspect of profitability and indebtedness. Agricultural companies in AP Vojvodina were more profitable and more indebted in the period before 2013 compared to the period after 2013. The results show that there is a significant difference in profitability level of agricultural companies in AP Vojvodina between the period 2013 and after 2013. Using MANOVA test, it is identified a significance for return on assets (ROA), return on equity (ROE) and net income per employee. On the other hand, results reflect there is no significant difference in indebtedness level of agricultural companies in AP Vojvodina between the period before 2013 and after 2013.

scholarly journals EVALUASI KINERJA STRUKTUR BANGUNAN MENGGUNAKAN PUSHOVER ANALYSIS DENGAN METODE ATC-40 DAN FEMA 356

Jurnal PenSil ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 40-46
Author(s):  
R. Hendarto Prasetyo R. Bambang Kusuma Prihadi ◽  
Dwi Kurniati ◽  
Bambang Kusuma Prihadi
Keyword(s):  
Lateral Displacement ◽  
Response Spectrum ◽  
Pushover Analysis ◽  
Performance Level ◽  
Performance Point ◽  
Drift Ratio ◽  
Load Pattern ◽  
Fema 356 ◽  
Immediate Occupancy ◽  
Collapse Behavior

Pushover analysis is a non-linear static analysis to determine the collapse behavior of a building or structure. The analysis is carried out by giving a static lateral load pattern to the structure, which is then gradually increased by a multiplier until a buliding movement target is reached. This final assignment research was conducted to determine the performance point based on ATC-40, to determine the performance level based on ATC-40, and to determine the performance level based on FEMA 356. The research method used the response spectrum with the SAP2000 v14 program. The result of the performance point in building with the values of Sa = 0,737, and Sd = 0,200 for the push X, while the values of push Y Sa = 0,680, and Sd = 0,225. The calculation of ATC-40 in building shows the value of the drift ratio in the X direction 0,01165 and the drift ratio Y direction 0,0127 at the level of performance Immediate Occupancy (IO). The result of FEMA 356 calculation in building shows the value of the lateral displacement target structure of the X direction structure = 0,00437 (0,437 %), and the value of the lateral displacement target of the Y direction structure = 0,006 (0,6 %) and at the level of performance Immediate Occupancy (IO). Then it could be concluded that The Dental & Mouth Hospital of UGM Prof. Soedomo, was at the level of performance Immediate Occupancy (IO), meaning that the building was still safe and could be reused after the earthquake and don’t occured serious demage.

A study of cometary eruptions through OH radio-lines

1999 ◽  
Vol 173 ◽  
pp. 249-254
Author(s):  
A.M. Silva ◽  
R.D. Miró
Keyword(s):  
Short Duration ◽  
Growth Curves ◽  
The Other ◽  
Initial Mass ◽  
Radio Lines ◽  
Other Hand ◽  
Sudden Rise

AbstractWe have developed a model for theH2OandOHevolution in a comet outburst, assuming that together with the gas, a distribution of icy grains is ejected. With an initial mass of icy grains of 108kg released, theH2OandOHproductions are increased up to a factor two, and the growth curves change drastically in the first two days. The model is applied to eruptions detected in theOHradio monitorings and fits well with the slow variations in the flux. On the other hand, several events of short duration appear, consisting of a sudden rise ofOHflux, followed by a sudden decay on the second day. These apparent short bursts are frequently found as precursors of a more durable eruption. We suggest that both of them are part of a unique eruption, and that the sudden decay is due to collisions that de-excite theOHmaser, when it reaches the Cometopause region located at 1.35 × 105kmfrom the nucleus.

Closing the GAP—A 5Å Scanning Microscope

1969 ◽  
Vol 27 ◽  
pp. 6-7
Author(s):  
A. V. Crewe
Keyword(s):  
Normal Form ◽  
The Other ◽  
Resolving Power ◽  
Scanning Microscope ◽  
Conventional Microscope ◽  
Other Hand ◽  
Closing The Gap ◽  
Thermal Sources ◽  
Better Than ◽  
Transmission Microscope

We have become accustomed to differentiating between the scanning microscope and the conventional transmission microscope according to the resolving power which the two instruments offer. The conventional microscope is capable of a point resolution of a few angstroms and line resolutions of periodic objects of about 1Å. On the other hand, the scanning microscope, in its normal form, is not ordinarily capable of a point resolution better than 100Å. Upon examining reasons for the 100Å limitation, it becomes clear that this is based more on tradition than reason, and in particular, it is a condition imposed upon the microscope by adherence to thermal sources of electrons.

Life Beyond 1MeV

1980 ◽  
Vol 38 ◽  
pp. 30-33
Author(s):  
K.H. Westmacott
Keyword(s):  
Electron Microscopy ◽  
Past Experience ◽  
The Other ◽  
Good Case ◽  
Other Hand ◽  
The U.S

Life beyond 1MeV – like life after 40 – is not too different unless one takes advantage of past experience and is receptive to new opportunities. At first glance, the returns on performing electron microscopy at voltages greater than 1MeV diminish rather rapidly as the curves which describe the well-known advantages of HVEM often tend towards saturation. However, in a country with a significant HVEM capability, a good case can be made for investing in instruments with a range of maximum accelerating voltages. In this regard, the 1.5MeV KRATOS HVEM being installed in Berkeley will complement the other 650KeV, 1MeV, and 1.2MeV instruments currently operating in the U.S. One other consideration suggests that 1.5MeV is an optimum voltage machine – Its additional advantages may be purchased for not much more than a 1MeV instrument. On the other hand, the 3MeV HVEM's which seem to be operated at 2MeV maximum, are much more expensive.

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