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Author: Shehriyar Bukhari (Graduate student) Publisher: ISBN: Category : Buildings, Reinforced concrete Languages : en Pages : 37
Book Description
Abstract: The ultimate goal of any structural designer is not only to design safe structures that meet the requirements of the governing design Codes, but also to make sure that the design is cost effective and easy to construct. For medium- and high-rise structures, to achieve this goal, engineers mostly use steel and reinforced concrete as construction materials. For medium-rise structures, reinforced concrete two-way flat slabs offer a number of advantages over other systems, including their shallow depth, which can reduce the overall height of the structure or increase the effective story height. Due to fast constructability and shaping freedom, flat slabs are commonly used for parking structures, medium-rise buildings, large industrial structures, and warehouses. Thickness optimization of flat slabs lead to reduced sizes of beams, columns, and foundation system, and lower lateral demand on seismic lateral load resisting system. Moreover, thickness optimization generates savings in material and labor costs. This research explores an alternate design method (referred to as the Rational Design Method (RDM) in ASCE 7-16) that can be used to optimize two-way flat slabs, applied to re-design of an existing five-story concrete parking garage. This study presents an iterative design process, where the computer program Etabs-2016 was used for 3D modeling and analysis. The optimized design is compared with the original design of the existing City Hall Automated Garage building located in West Hollywood, California, designed using commonly used methods. The comparison between the original and re-designed building clearly demonstrates the advantages of the optimized design, as the total self-weight of the building was reduced by 30%.
Author: Shehriyar Bukhari (Graduate student) Publisher: ISBN: Category : Buildings, Reinforced concrete Languages : en Pages : 37
Book Description
Abstract: The ultimate goal of any structural designer is not only to design safe structures that meet the requirements of the governing design Codes, but also to make sure that the design is cost effective and easy to construct. For medium- and high-rise structures, to achieve this goal, engineers mostly use steel and reinforced concrete as construction materials. For medium-rise structures, reinforced concrete two-way flat slabs offer a number of advantages over other systems, including their shallow depth, which can reduce the overall height of the structure or increase the effective story height. Due to fast constructability and shaping freedom, flat slabs are commonly used for parking structures, medium-rise buildings, large industrial structures, and warehouses. Thickness optimization of flat slabs lead to reduced sizes of beams, columns, and foundation system, and lower lateral demand on seismic lateral load resisting system. Moreover, thickness optimization generates savings in material and labor costs. This research explores an alternate design method (referred to as the Rational Design Method (RDM) in ASCE 7-16) that can be used to optimize two-way flat slabs, applied to re-design of an existing five-story concrete parking garage. This study presents an iterative design process, where the computer program Etabs-2016 was used for 3D modeling and analysis. The optimized design is compared with the original design of the existing City Hall Automated Garage building located in West Hollywood, California, designed using commonly used methods. The comparison between the original and re-designed building clearly demonstrates the advantages of the optimized design, as the total self-weight of the building was reduced by 30%.
Author: FIB – International Federation for Structural Concrete Publisher: FIB - International Federation for Structural Concrete ISBN: 2883941416 Category : Technology & Engineering Languages : en Pages : 555
Book Description
The first international FRC workshop supported by RILEM and ACI was held in Bergamo (Italy) in 2004. At that time, a lack of specific building codes and standards was identified as the main inhibitor to the application of this technology in engineering practice. The workshop aim was placed on the identification of applications, guidelines, and research needs in order for this advanced technology to be transferred to professional practice. The second international FRC workshop, held in Montreal (Canada) in 2014, was the first ACI-fib joint technical event. Many of the objectives identified in 2004 had been achieved by various groups of researchers who shared a common interest in extending the application of FRC materials into the realm of structural engineering and design. The aim of the workshop was to provide the State-of-the-Art on the recent progress that had been made in term of specifications and actual applications for buildings, underground structures, and bridge projects worldwide. The rapid development of codes, the introduction of new materials and the growing interest of the construction industry suggested presenting this forum at closer intervals. In this context, the third international FRC workshop was held in Desenzano (Italy), four years after Montreal. In this first ACI-fib-RILEM joint technical event, the maturity gained through the recent technological developments and large-scale applications were used to show the acceptability of the concrete design using various fibre compositions. The growing interests of civil infrastructure owners in ultra-high-performance fibre-reinforced concrete (UHPFRC) and synthetic fibres in structural applications bring new challenges in terms of concrete technology and design recommendations. In such a short period of time, we have witnessed the proliferation of the use of fibres as structural reinforcement in various applications such as industrial floors, elevated slabs, precast tunnel lining sections, foundations, as well as bridge decks. We are now moving towards addressing many durability-based design requirements by the use of fibres, as well as the general serviceability-based design. However, the possibility of having a residual tensile strength after cracking of the concrete matrix requires a new conceptual approach for a proper design of FRC structural elements. With such a perspective in mind, the aim of FRC2018 workshop was to provide the State-of-the-Art on the recent progress in terms of specifications development, actual applications, and to expose users and researchers to the challenges in the design and construction of a wide variety of structural applications. Considering that at the time of the first workshop, in 2004, no structural codes were available on FRC, we have to recognize the enormous work done by researchers all over the world, who have presented at many FRC events, and convinced code bodies to include FRC among the reliable alternatives for structural applications. This will allow engineers to increasingly utilize FRC with confidence for designing safe and durable structures. Many presentations also clearly showed that FRC is a promising material for efficient rehabilitation of existing infrastructure in a broad spectrum of repair applications. These cases range from sustained gravity loads to harsh environmental conditions and seismic applications, which are some of the broadest ranges of applications in Civil Engineering. The workshop was attended by researchers, designers, owner and government representatives as well as participants from the construction and fibre industries. The presence of people with different expertise provided a unique opportunity to share knowledge and promote collaborative efforts. These interactions are essential for the common goal of making better and sustainable constructions in the near future. The workshop was attended by about 150 participants coming from 30 countries. Researchers from all the continents participated in the workshop, including 24 Ph.D. students, who brought their enthusiasm in FRC structural applications. For this reason, the workshop Co-chairs sincerely thank all the enterprises that sponsored this event. They also extend their appreciation for the support provided by the industry over the last 30 years which allowed research centers to study FRC materials and their properties, and develop applications to making its use more routine and accepted throughout the world. Their important contribution has been essential for moving the knowledge base forward. Finally, we appreciate the enormous support received from all three sponsoring organizations of ACI, fib and Rilem and look forward to paving the path for future collaborations in various areas of common interest so that the developmental work and implementation of new specifications and design procedures can be expedited internationally.
Author: Ming-Shan Zhao Publisher: CRC Press ISBN: 1040099858 Category : Technology & Engineering Languages : en Pages : 144
Book Description
This accessible and practical shortform book details the properties and advantages of high-performance pre-engineered steel-concrete composite beams (HPCBs) for improving the sustainability of construction techniques. It also explains the analysis methods for testing HPCB systems. The authors describe a new HPCB system that has been developed to reduce the input of raw materials and embodied CO2 commonly associated with heavily loaded and long-spanned industrial buildings (which predominately comprise reinforced concrete) and improve the sustainability of the construction process. They provide several resources throughout to facilitate adoption by professionals. Design equations derived from Eurocode 4 approach for ultimate limit state and serviceability limit state and worked examples are included throughout. The authors discuss the feasibility for both materials and the full-scale beams and CO2 reduction methods, including use of recycled concrete aggregate, ground granulated blast-furnace and silica fume to replace natural coarse aggregates and Ordinary Portland Cement. Guidance for testing HPCBs—including setup, test procedure and data collection and interpretation—is also given. The authors also elaborate on recommendations for finite element analysis for HPCBs. Design examples are appended to illustrate typical current practice using a 12 × 12 m grid floor with live load of 15 kPa. Various considerations for different parameters such as fire resistance are discussed. Finally, the authors present a case study of a recently completed industrial building in Singapore to quantify the benefits of using HPCBs over reinforced concrete and conventional composite construction. Structural engineering professionals, whose work relates to long-span and heavy-loading industrial or commercial buildings, will benefit from the detailed guidance and focus on practical applications provided throughout this book. Post-graduate students of advanced steel and composite structures will also benefit from these descriptions.
Author: Ekkehard Fehling Publisher: BoD – Books on Demand ISBN: 3737611599 Category : Technology & Engineering Languages : en Pages : 310
Book Description
Sustainable construction, with the overarching goal of reducing the environmental footprint of everything we build is becoming increasingly important and urgent in the light of the climate change the world is facing. The use of innovative and sustainable building materials, especially concrete as the worldwide most commonly used building material, offers a great opportunity to significantly reduce climate-relevant emissions in the construction sector. Due to their performance and reliable durability, the use of innovative high-performance concretes will help to reduce the need for new constructions and to sustainably repair existing infrastructure. In new buildings in particular, the use of high-performance materials can help to save energy and natural resources, which reduces climate-relevant emissions and thus global warming. With the current HiPerMat 6, we are responding to the growing understanding of the impact of our construction activities on the environment by placing greater emphasis on sustainability issues.
Author: Hojjat Adeli Publisher: John Wiley & Sons ISBN: 0470867345 Category : Technology & Engineering Languages : en Pages : 222
Book Description
While the weight of a structure constitutes a significant part of the cost, a minimum weight design is not necessarily the minimum cost design. Little attention in structural optimization has been paid to the cost optimization problem, particularly of realistic three-dimensional structures. Cost optimization is becoming a priority in all civil engineering projects, and the concept of Life-Cycle Costing is penetrating design, manufacturing and construction organizations. In this groundbreaking book the authors present novel computational models for cost optimization of large scale, realistic structures, subjected to the actual constraints of commonly used design codes. As the first book on the subject this book: Contains detailed step-by-step algorithms Focuses on novel computing techniques such as genetic algorithms, fuzzy logic, and parallel computing Covers both Allowable Stress Design (ASD) and Load and Resistance Factor Design (LRFD) codes Includes realistic design examples covering large-scale, high-rise building structures Presents computational models that enable substantial cost savings in the design of structures Fully automated structural design and cost optimization is where large-scale design technology is heading, thus Cost Optimization of Structures: Fuzzy Logic, Genetic Algorithms, and Parallel Computing will be of great interest to civil and structural engineers, mechanical engineers, structural design software developers, and architectural engineers involved in the design of structures and life-cycle cost optimisation. It is also a pioneering text for graduate students and researchers working in building design and structural optimization.
Author: Jaap Bakker Publisher: CRC Press ISBN: 1498777015 Category : Technology & Engineering Languages : en Pages : 438
Book Description
This volume contains the papers presented at IALCCE2016, the fifth International Symposium on Life-Cycle Civil Engineering (IALCCE2016), to be held in Delft, The Netherlands, October 16-19, 2016. It consists of a book of extended abstracts and a DVD with full papers including the Fazlur R. Khan lecture, keynote lectures, and technical papers from all over the world. All major aspects of life-cycle engineering are addressed, with special focus on structural damage processes, life-cycle design, inspection, monitoring, assessment, maintenance and rehabilitation, life-cycle cost of structures and infrastructures, life-cycle performance of special structures, and life-cycle oriented computational tools. The aim of the editors is to provide a valuable source for anyone interested in life-cycle of civil infrastructure systems, including students, researchers and practitioners from all areas of engineering and industry.
Author: F. K. Kong Publisher: CRC Press ISBN: 9780412384202 Category : Technology & Engineering Languages : en Pages : 530
Book Description
This highly successful textbook has been comprehensively revised for two main reasons: to bring the book up-to-date and make it compatible with BS8110 1985; and to take into account the increasing use made of microcomputers in civil engineering. An important chapter on microcomputer applications has been added.
Author: Cher Ming Tan Publisher: BoD – Books on Demand ISBN: 9537619079 Category : Computers Languages : en Pages : 430
Book Description
This book provides the readers with the knowledge of Simulated Annealing and its vast applications in the various branches of engineering. We encourage readers to explore the application of Simulated Annealing in their work for the task of optimization.
Author: Shehriyar Bukhari (Graduate student)
Author: Shehriyar Bukhari (Graduate student)
Author: FIB – International Federation for Structural Concrete
Author: Ming-Shan Zhao
Author: Ekkehard Fehling
Author: Hojjat Adeli
Author: Jaap Bakker
Author: 
Author: F. K. Kong
Author: ACI Committee 318
Author: Cher Ming Tan