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You searched for subject:(slab deflections). Showing records 1 – 2 of 2 total matches.

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Penn State University

1. Motter, Christopher John. Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings.

Degree: MS, Civil Engineering, 2009, Penn State University

An analytical algorithm is developed to compute the mid-panel deflection-time history for two-way reinforced concrete floor slabs in multi-story high-rise buildings. Mid-panel deflection is determined using the crossing beam analogy, superimposing column strip and middle strip deflections. The analysis procedure incorporates the effects of early-age construction loading. The algorithm determines the loading-time history of the slab based upon the details of construction schemes involving one level of shoring in conjunction with two, three, or four levels of reshoring. Alternatively, the algorithm may operate based upon a prescribed loading-time history. The analytical algorithm is implemented as an interactive C++ computer program using Microsoft Visual Basic C++ Standard Edition 2003. A parametric study determines the sensitivity of the algorithm to variation in individual input parameters. Comparison of program results with published experimental results justifies the program as a valid means of computing two-way slab deflection-time histories.

Subjects/Keywords: construction loading; construction loads; construction load; crossing-beam; reinforced concrete slab; floor slab; floor slabs; slab deflection; slab deflections; slab serviceability; two-way slab; slab deflection-time history; crossing beam; shoring; reshoring

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Motter, C. J. (2009). Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/9754

Chicago Manual of Style (16th Edition):

Motter, Christopher John. “Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings.” 2009. Masters Thesis, Penn State University. Accessed July 16, 2019. https://etda.libraries.psu.edu/catalog/9754.

MLA Handbook (7th Edition):

Motter, Christopher John. “Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings.” 2009. Web. 16 Jul 2019.

Vancouver:

Motter CJ. Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings. [Internet] [Masters thesis]. Penn State University; 2009. [cited 2019 Jul 16]. Available from: https://etda.libraries.psu.edu/catalog/9754.

Council of Science Editors:

Motter CJ. Serviceability Analysis for Deflection of Reinforced Concrete Floor Slabs in Multi-Story High-Rise Buildings. [Masters Thesis]. Penn State University; 2009. Available from: https://etda.libraries.psu.edu/catalog/9754


University of Adelaide

2. Vincent, Thomas J. Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings.

Degree: 2009, University of Adelaide

The research presented in this thesis focuses on the accuracy of predicting deflections and cambers in partially prestressed suspended slabs. Precision in predicting this behaviour accurately is complex due to the large number of variables which affect the behaviour of suspended prestressed slabs. This level of complexity is particularly relevant for post tensioned slabs due to the numerous on site construction steps. Many of the variables are hard to determine accurately due to their tendency to be unique for each construction site. Variables such as ambient temperatures, concrete material properties, stressing times, applied loads, loading times, prop movement and humidity are all examples of these properties. Hence, when predicting the behaviour of post tensioned suspended slabs of a multi storey building there always remains a degree of uncertainty. The research presented in this thesis addresses crucial areas of this topic and ultimately aims to supply reinforced concrete designers and constructors with additional confidence when predicting this behaviour. The requirement for this project surfaced during the design stages of 151 Pirie, a multistorey building constructed in Adelaide, Australia. The design project for 151 Pirie was particularly complex due to a very ambitious construction timeline. The strict construction timeline was imposed due to the contractual agreement of early occupancy of the top three floors (of a 9 storey building). The client purchasing the top floors required functioning office space within a matter of months. This contract created a construction priority of erecting the bare structural requirements up to and including the top three floors in the shortest possible time. Fittings and services to the top three floors was then the secondary priority. Fitting and services to the lower floors (which would usually be achieved before the upper floors) would be performed at a later date. Excessive deflection limits of the slabs due to the accelerated construction were a major concern for the client. The effect on the deformation performance due to the accelerated construction was difficult to predict for the designer. Therefore, this project was born to help supply confidence to the designer and concrete supplier for this construction scenario. This research project was designed to assist in the close monitoring and recording of the construction process of 151 Pirie. Due to the nature of data collection, data from this construction site would be limited in its benefits for the current construction. However, the data obtained would be vital for future projects by providing a log of onsite slab performance data as well as explanations of delays or other general outcomes with the construction process. Therefore, the aim of this research is to present the issues that were faced, the methods used to overcome these issues as well as displaying the vast amounts of site specific data documented within this project for future reference. In this research a wide range of concrete material properties were… Advisors/Committee Members: Ozbakkaloglu, Togay (advisor), Seracino, Rudolf (advisor), Baweja, Daksh (advisor), Kaggwa, William (advisor), School of Civil, Environmental and Mining Engineering (school).

Subjects/Keywords: deflections; deformations; concrete; slab; prestressed concrete; post-tensioned

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Vincent, T. J. (2009). Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/61075

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Vincent, Thomas J. “Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings.” 2009. Thesis, University of Adelaide. Accessed July 16, 2019. http://hdl.handle.net/2440/61075.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Vincent, Thomas J. “Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings.” 2009. Web. 16 Jul 2019.

Vancouver:

Vincent TJ. Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings. [Internet] [Thesis]. University of Adelaide; 2009. [cited 2019 Jul 16]. Available from: http://hdl.handle.net/2440/61075.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vincent TJ. Prediction of deformations in post-tensioned prestressed suspended slabs in tall buildings. [Thesis]. University of Adelaide; 2009. Available from: http://hdl.handle.net/2440/61075

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.