ANALYSIS AND DESIGN OF G+4 RESIDENTIAL BUILDING USING ETABS | ScienceGate (2024)

Author(s):

Chinmay Padole◽

Samiksha Bansod◽

Taniya Sukhdeve◽

Abhishek Dhomne◽

Maheshwari Nagose◽

...

Keyword(s):

ETABS stands for Extended Three-DimensionalAnalysis of Building Systems. ETABS is commonly usedto analyze: Skyscrapers, concrete structures, low andhigh rise buildings, and portal frame structures. The casestudy in this paper mainly emphasizes on structuralbehavior of multi-storey building for different planconfigurations like rectangular, C, L and I-shape.Modelling of 15-storeys R.C.C. framed building is doneon the ETABS software for analysis ETABS issue, foranalysis and design for building systems. ETABS featuresare contain powerful graphical interface coupled withunmatched modeling, analytical, and design procedures,all integrated using a common database. STAAD andETABS both of the software are well equipped and verymuch capable of handling different shape of thestructures, static and dynamic loadings and differentmaterial properties.

A multi-storey building is habitually modelled as a frame structure which neglects the shear wall/slab openings along with the inclusion of staircases. Furthermore, the structural strength provided by shear walls and slabs is not precisely incorporated. With increasing building height, the effect of lateral loads on a high-rise structure increases substantially. Inclusion of shear walls and slabs with the frame leads to improved lateral stiffness. Besides, their openings may play imperative role in the structural behaviour of such buildings. In this study, 61 multi-storey building configurations have been modelled. Corresponding analyses are performed to cope with the influence of shear walls, slabs, wall openings, masonry walls and staircases in addition to frame modelling. The finite element approach is used in modelling and analysis. Structural responses in each elemental combination are evaluated through equivalent static and free vibration analyses. The assessment reveals that inclusion of only slab components with frame modelling contributes trivial improvement on structural performance. Conversely, the presence of shear wall slabs with frame improves the performance noticeably. Increasing wall openings decreases the structural responses. Furthermore, it is not recommended to model staircases in addition to frame–slab–shear wall modelling, unless the effect of wall openings and slab openings is adequately considered.

ABSTRACTThis study examines the daylight and energy performance of 27 external shading scenarios in a high-rise residential building in the urban tropics. The cooling energy, daytime lighting energy and the spatial daylight autonomy (sDA) of the building model were simulated in Rhino3D and Grasshopper simulation software. The best performance scenario (vertical and horizontal shading on the twentieth floor, horizontal shading only for the eleventh floor and no shading for the second floor) satisfied 75 sDA(300lx|50) with corresponding annual enery performance of 16%–20% in the cardinal directions. The baseline scenario, which is the current practice of providing balconies on all floors, reduced daylight to less than 75 sDA on the eleventh and second floor, even though it had higher annual enery performance (19%–24%) than the best performance scenario. Application of the design principles to a case study indicated that 58% of the spaces had over 75 sDA for both Baseline and Best performance scenarios, while an increase in enery performance of 1%–3% was found in the Best performance scenario compared to the Baseline.

The use of seismic isolation for the seismic rehabilitation of existing buildings is very attractive but often very tricky due to several aspects related to its implementation. In this paper, a case study of seismic rehabilitation of a high-rise residential building with seismic isolation is presented. The building under consideration is located in southern Italy and it is placed next to another building from which it is separated by a gap of 400 mm. In the paper, all the steps of the seismic rehabilitation process are described. First, the target objective of the seismic rehabilitation and the choice of isolation system type and location are discussed. The design of the isolation system, carried out following a direct displacement-based approach, is then examined. Finally, the main phases followed in the installation of the isolation system are described. Some comments on costs and time needed to complete the intervention are also reported.

<p>This study was conducted on the seismic performance of the new DPT 1301/1302 - 61 earthquake design standard in Thailand, the ACI 318-11:2014, and the ASCE 7-16 Standard. The selected sample structure for the case study was an existing five-storey building located in Bangkok. It was designed as a shopping mall having a length of 350 m, a width of 35 m, and a height of 26 m, resulting in a total constructed usable area of 62,000 m2, and consists of shops, restaurants and car-park spaces. Construction started on 15th February 2013, and it was opened on 31st August 2019. Bangkok is situated on a large plain underlain by the thick alluvial and deltaic sediments of the Chao Phraya Basin. The design spectral accelerations, as specified in the previous DPT standard 1302 - 52, were established based on the data of the site characteristics available from the past. However, recent studies have revealed several key features of the site characteristics that are essential for improvement of the previous standard. The structural analysis and design of this building were performed by using computer software programs so as to comply with the previous standard. This paper presents a comparison between the previous and the newly revised standards and examines the design differences by using the selected building as a case study on the structural design of typical existing low-rise buildings in Bangkok.</p>

This report presents an evaluation of emissions from indoor building materials that may cause health damage to the people who occupy the building, since these materials emit toxic chemicals into the air and indoor surfaces. This report presents a case study which evaluates Gypsum Boards, frequently used in the construction of dividing walls and ceilings. The experimental part of this report is based on a three-dimensional space that simulates a common room; for example, a classroom or a workstation. The indoor environmental conditions, such as ventilation, temperature, and humidity, affect chemical emissions from building materials. The technical methodology used, is based on the comparison of conventional materials and alternative materials with similar characteristics and different composition, using similar testing methods, environmental conditions, and instruments and tools. This is a very important report to understand problems related to environmental pollution, specifically of air and its effects indoors, directly on public health, and indirectly on building systems and selection of materials. The tests conclude that alternative materials (with recycled content) are better than traditional ones, because they reduce indoor pollution.

In this paper, a three-dimensional numerical parametric study was conducted to predict the deformation mechanism of a 20-storey building sitting on a (4 × 4) piled raft to an adjacent 25 m deep basem*nt excavation. The influences of different excavation depths were investigated. An advanced hypoplastic sand model (which is capable of taking small-strain stiffness into account) was adopted to capture soil behaviour. The computed results revealed that excavation adjacent to a building resting on the piled raft caused significant settlement, differential settlement, lateral deflection, and interstorey drift in the building. With settlement due to working load (i.e., 4.8dp%), the total settlements of the building (7.8dp%) exceed the maximum allowable foundation settlement (i.e., 50 mm). In addition, substantial bending moment, shear forces, and changes in axial load distribution along pile length were induced. The findings from this study revealed that the building and pile responses are significantly influenced by the excavation depth.