To solve a problem, you need to understand it first. -Rishabh
Here is a reverse chronological sequence of my projects..
Column Shortening Phenomena & Thesis Objectives Presentation:
When vertical load is applied to the column, it shortens, for concrete being elastic. Although, structures which do not attain heights more than 100 meters, it is virtually insignificant to consider this phenomena while designing as well as during construction, as it does not impose any kind of risk to structural and non-structural elements of the building. But, in case of high rise in which, a large number of columns are placed one above another and hence the added shortening certainly poses various hazards. As a consequence of which, floor slabs tilt and generally rotate towards the side where more relative shortening of columns is observed, thereby leading to torsional tendencies in the structure. Furthremore, shortened column in turn causes beams to deflect and hence affects infills and facade works. Not just vertical loads leads to column shortening but also time dependent properties of concrete like creep and shrinkage also favour shortening of columns. Cumulative impacts of all these factors especially in case of high rise, mega rise, etcetera must be taken into account while estimating shortening in order to avoid secondary torsion. Important precepts that are very essential for structural designers to accommodate this phenomenon are dealt with as clearly as possible as there are no specified provisions in IS codes. The thesis concerns with the following parameters, the particular height after which these effects should compulsorily be considered and the magnitude of permissible deflection and slope considering the typical Indian scenario of column spacing, that can be considered ‘safe’ as per IS codal provisions and other available literature.
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Oman Bungalow Project : My first project called Oman Bungalow Analysis, involved constraints of floating columns, basement, ponds in the central hall, along with concerns of torsional modes. Furthermore, designing had to be done using European Codes, which gave me an in-depth idea of structural behavior. This was an ETABS 9.7.8 project. The modeling of floors and basement was done on CSI SAFE.
Pune Bungalow Project : Analysed, designed and detailed independently. Since, this was my first project, it took a lot of time. Lot of mistakes were corrected by mentors of the firm CENS-India. Worked on AxisVM. 2011.
Industrial Steel Structures : Modeled the project in STAAD.Pro. as desired by the mentors at CENS-India and calculated the self weight of the steel using hand calculations. Worked upon many such projects.
Roof Shed of My House: During internship, my father asked me to design steel roof shed and gave me dimensions which he wanted. I analysed that structure on STAADPro. and gave back proper sections, and got it checked from my mentors at CENS-India
Vishal Heights: This was a multi-storey project and was a real experience of insights of structural behavior. This complete project was completed by me. Referring to various codal provisions, this project helped me realize my potential as a designer. This project was completed by me three different softwares to compare the result variations. These softwares were- AxisVM, ETABS 2013, STAAD.Pro.
Presentation of AxisVM: This presentation describes the various features of AxisVM, analysis software. I made this ppt, describing benefits of AxisVM over other softwares. Abridged ppt is enclosed here for download (abridged ppt 10mb; original ppt 26 mb) |
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Guest Lecture: On Earthquake resistant designing of structures. Discussed the earthquake loads on the structure while explaining the various steps to analyse the sample structure. Prepared various handouts related to earthquakes and steps the presentation is going to proceed with.
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Projects during Academics :
Taj Ul Masajid: Surveying and Non Destructive Testing Project. It was a group project for Final Year students of our college. Although, being in a sophomore year, I was still allowed to take part in the project, thereby allowing me to learn the concepts of NDT before taking it as a formal subject. It was really an amazing project as it was a live project in which the Mosque was surveyed using advanced surveying and NDT equipments like Total Station, Cut and Pull out testing techniques, etc.
Major Project: "Analysis and Design of G+40 High Rise R.C.C. Structure", comprised of modelling of shear walls for best configuration". 4 models of shear walls were tried on the project and the best one was chosen that gave least deflection, drift and reduced torsion being the fundamental mode shape. Pile foundation was also designed for black assumed soil conditions i.e. black soil.
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Hydraulic Crane Project : Made in the sophomore year as a project of Fluid Mechanics I. This is based on Continuity equation and Bernoulli's equation.
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Glass Fibre Reinforced High Strength Concrete, an Alternate to Conventional Concrete. This project was undertaken under the guidance of Dr. Saleem Akhtar and Prof. Geeta Batham. Glass fibres in appropriate proportion were found to increase the compressive strength of concrete and fly ash based cement in proper water cement ratio were found to increase the workability of concrete. Super Plasticizers helps to cure concrete well by preventing the water loss.
It was also found that delayed demoulding of the concrete cubes increases the strength of concrete. |
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Collapsed City Tank: I was fortunate to work with NITTTR-Bhopal team, while testing and report preparation of a City Water Tank, which collapsed mysteriously on a fine morning. Advanced Non Destructive Tests were carried out to determine the flaws in the construction material, of in-situ collapsed concrete members like CAPO Test, Rebound Hammer Test, Ultrasonic Test, etcetera. I was also involved in report preparation.
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