Seismic and Wind Analysis of RCC Building with Different Shape of Shear Wall and Without Shear Wall

In India, about 50-60% of the total area is vulnerable to the seismic activity. Earthquakes are the vibrations or the motion of the ground due to release of energy. The vibrations or ground motion are the important factors to analyze and design, the earthquake resistant structure. So, to reduce the impact of earthquake different efforts has been done in this field. Basically, earthquake exerts lateral as well as vertical forces so to dissipate those forces and the vibration in system earthquake resistant structure has been design. The design of earthquake resistant structures depends on providing stiffness, strength and inelastic deformation which withstand the earthquake forces. As the height of the structure increases the lateral loads acted on the structure increases and decrease in the stiffness, so to counteract those shear walls and different damping devices has been used. Keywords: IS Code 1892-Part-1:2016; U - Section, Z- Section, H-Section, T-Section

Assessment of CYGNSS Wind Speed Retrievals in Tropical Cyclones

The NASA CYGNSS satellite constellation measures ocean surface winds using the existing network of the Global Navigation Satellite System (GNSS) and was designed for measurements in tropical cyclones (TCs). Here, we focus on using a consistent methodology to validate multiple CYGNSS wind data records currently available to the public, some focusing on low to moderate wind speeds, others for high winds, a storm-centric product for TC analyses, and a wind dataset from NOAA that applies a track-wise bias correction. Our goal is to document their differences and provide guidance to users. The assessment of CYGNSS winds (2017–2020) is performed here at global scales and for all wind regimes, with particular focus on TCs, using measurements from radiometers that are specifically developed for high winds: SMAP, WindSat, and AMSR2 TC-winds. The CYGNSS high-wind products display significant biases in TCs and very large uncertainties. Similar biases and large uncertainties were found with the storm-centric wind product. On the other hand, the NOAA winds show promising skill in TCs, approaching a level suitable for tropical meteorology studies. At the global level, the NOAA winds are overall unbiased at wind regimes from 0–30 m/s and were selected for a test assimilation into a global wind analysis, CCMP, also presented here.

Wind Analysis of a Multi Storied Structure

Due to growing population and less availability of land, multistoried buildings are constructed which can serve many people in less area. Purpose of this project is to analysis and designs (G+13) multistory building using E-TABS. Aims are to give proper awareness regarding right design and details of the building. Planning is done using AutoCAD, Designs has involves Load calculations, manually and the Structure is analysis using E-TABS. Codes refer for these projects are NBC IS (456-2000). Concrete mix use is M30. The steel strength for all members is of grade Fe-415 & Fe500. For analyzing the structure, the loads are very important which are calculated using IS (875). The LIMIT STATE METHOD is the method which has been adopted. The manual design is a difficult process and consumes more time. The project purpose is to give the overall experience in the field of planning, design and to gain the knowledge in a practical way.

Comparative Analysis of RC Building Using Dampers and with Shear Wall under Wind Load: A Review

The requirement of tall building in recent years increase the construction to satisfy the need of human beings. Very tall buildings located in high velocity wind area are highly sensitive therefore calculation and analysis of wind load is very impotent. Due to change in climatic condition the basic wind speed are increases. The main aim of this paper is to introducing the different techniques which is used to reduce the effect of wind load or lateral loads. Keywords: wind analysis, comparative analysis, TMD (tuned mass damper),friction damper, shear wall

Assessment of Reinforced Concrete Structures under Wind and Earthquake Using Different Design Methods

The effect of wind and earthquake on the structures can be specified briefly by the effect of horizontal forces act on structures varied in its value and direction depending on the location and the distance from the sea in case of wind load and the seismic activity of the region in case of an earthquake. These horizontal forces conflict in concept with the structural stability of the structure. Most of the designer engineers adopted the vertical forces only in design calculations and neglecting the horizontal forces based on the opinion that the horizontal forces are not effective. This design concept is wrong, thus it is necessary to take into consideration the effect of these horizontal forces on structures, especially there are a number of earthquakes took placed in different places of Iraq. So, it is necessary for dealing seriously with design calculations according to local and international common codes. This investigation presents a review for the design procedures of different codes, solved design examples according to different local and international codes, the difference in design between the horizontal and vertical forces and the methods to minimize the effect of wind and earthquake on structures. Data of 12 floors symmetrical building were adopted in seismic and wind analysis. The results of SAP2000 were compared with international common codes such as European, American, Brazilian, Italian and Romanian codes. The results of calculations revealed that there are some variations in the analysis of different codes. Romanian code is more conservative in calculating the lateral displacement and forces, while Italian code was low conservative.

Developing a process-oriented approach towards Positive Energy Blocks: the wind-analysis contribution

Positive Energy Block (PEB) is an emerging paradigm to transform cities into low carbon cities. It is expected that buildings will become the main components of the future energy infrastructure. This scenario demands a structural integration of the cyclical environmental variables in designing our buildings and cities as a whole. However, such an integration continue to be rare due to the dominance of object-oriented approaches. This study contributes to reducing these difficulties by developing a process-oriented approach, focusing on the wind contribution. The assumption posed herein is that the transition towards PEBs should be an opportunity to redefine the rules to organise the built environment structure integrating energy and urban environmental qualities. A case study, involving three public school buildings located in three different urban patterns in Rome, illustrates a preliminary step in developing an integrated platform to orient strategic design solutions towards PEBs. This is done by developing and assessing three indexes: wind form index, wind thermal-loss index, and wind energy production index. The results point out the usability and limits concerning the approach adopted, stressing the relevance of an integrated platform to support decision-makers in planning the agenda to transform buildings as components of PEBs.

Analysis of Circular Elevated Service Reservoir Using STAAD Pro by Considering the Effect of Continuity

In most regions of the country, early damage of elevated water tanks during their service life is becoming an increasing concern. The majority of damage occurs in tanks due to a lack of knowledge in design and ignoring continuity effect. Elevated water tank are used for storage of water at certain height and supplying water for essential usage. Hence damage of such structure endanger supply of drinking water and severe economical losses. The main purpose of this research is to determine the importance of continuity analysis in practical application and use of staadpro software to analyse an elevated circular water tank. The bottom joint of water tank is examined using continuity effect. This is the common joint where base slab, wall, bottom rings beam, gallery, column and base beam join. water tank is subjected to self-weight and hydrostatic Pressure due to water. Continuity effect increase stress, Hoop tension, BM hence its necessary to consider its effect while designing the tank. The results obtained from staadpro software is nearly same with manual result. This indicated that staadpro is suitable for design and analysis of water tanks. Three model having capacity of 55 m3, 125 m3 and 221 m3 situated in yavatmal, buldana and ramtek district is taken for analysis. Seismic analysis and wind analysis is also carried out on this model for safety purpose.

Hyper-local extreme temperature and wind modeling in the Basque Country

<p>The sustainability of economic development and living conditions depends to a large extent on our ability to manage the risks associated with extreme events. In that sense, many practical problems require knowledge of the behaviour of extreme meteo-climatic variables at a high level of spatial and temporal detail. This is particularly true around highly populated areas where most part of the socio-economic activity takes place. Those metropolitan areas seem to be more vulnerable to extreme meteo-climatic conditions in the coming decades.</p><p> </p><p>In this paper, we present some results of the implementation of operational high-resolution tools (down to 100m) for temperature and wind analysis at local level. Here we focus on different systems we have developed for its applications at local level in the Basque Country based on WRF and CALMET but we also include a brief descriptive analysis of some others available tools for thermal and wind analysis at high spatial resolution.</p><p>In order to test their operational capabilities, the behaviour of the different systems is analysed in diverse experiments corresponding to high impact weather scenarios, affecting the three largest metropolitan areas of the Basque Country, i.e. the metropolitan areas of Bilbao, Donostia-San Sebastian and Vitoria-Gasteiz, where more than half of the Basque population lives.  </p><p>The aim of this study is to evaluate and provide plausible tools and methodologies for very high resolution meteo-climatic analysis in the Basque Country area, focusing on wind and temperature extremes. With the final objective of identifying the benefit of hyperlocal modelling, finding under which conditions and spatio-temporal resolutions these highly computation demanding tools for wind and thermal characterisation are fully useful and provide sufficient added value. It is important to note that some results and main conclusions are of a general nature and could be extrapolated to other areas.</p>