Part One The operating context
1 The operating environment
2 The external environment
3 Engaging building services engineers
4 Stakeholder interfaces
5 Professional ethics
Part Two Technical issues associated with building services design
6 Design criteria
7 System descriptions
8 Off-site manufacturing
Part Three The design management process
9 Design execution
10 Risk management
11 Information management
12 Value management
13 Planning management
14 Commercial management
15 Quality management
16 Performance management
Part Four Special buildings
17 Special buildings
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Design Considerations for Shear Bolts in Punching Shear Retrofit of Reinforced Concrete Slabs
Author: Maria Anna Polak and Wensheng Bu | Size: 0.5 MB | Format:PDF | Quality:Original preprint | Publisher: ACI Structural Journal | Year: 2013
Abstract:
This study addresses design aspects for the punching shear bolt retrofitting system for reinforced concrete flat slabs supported on columns. Shear bolts are an external type of reinforcement installed in existing slabs by first drilling small holes through the slab thickness, installing the bolts into them, and tightening the bolt nuts. Previous experimental research at the University of Waterloo showed the effectiveness of this system in increasing strength and ductility of existing slabs, with little changes in the slab’s appearance. The procedures for the design of the shear bolts and their installation in slabs are proposed in the paper. Recommendations are provided regarding the stem diameter, the head area and thickness, and the spacing and the layout of the bolts in a plane of a slab.
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Dear all,
kindly please find for me the paper in ACI Structural Journal (2013) below
Design Consideration for Shear Bolts in Punching Shear Retrofit og Reinforced Concrete Slabs,
Author(s): Maria Anna Polak and Wensheng Bu
Vol: 110(1), pp. 15-25 (2013)
Article/eBook Full Name: HPFRCC-7: Proceedings of the 7th RILEM Workshop on High Performance Fiber Reinforced Cement Composites
Author(s): H. W. Reinhardt (Ed.)(
Publish Date: 2015
ISBN: 978-3-8167-9397-7
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Abstract: Research on earthquake-induced collapse simulation has a great practical significance for super-tall buildings. Although mega-braced frame-core tube buildings are one
of the common high-rise structural systems in high seismic intensity regions, the failure mode and collapse mechanism of such a building under earthquake events are rarely studied. This
paper thus aims to investigate the collapse behavior of a super-tall mega-braced frame-core tube building (H = 550 m) to be built in China in the high risk seismic zone with the maximum spectral acceleration of 0.9 g (g represents the gravity acceleration). A finite element (FE) model of this building is constructed based on the fiber-beam and multi-layer shell models. The dynamic characteristics of the building are analyzed and the earthquake-induced collapse simulation is performed. Finally, the failure mode and mechanism of earthquake-induced collapse are discussed in some detail. This study will serve as a reference for the collapse-resistance design of super-tall buildings of similar type.
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The purpose of this thesis is to create basic design guidance for tall buildings and their aerodynamic modifications as a resource for architects, engineers, developers, and students. It
aims to make a contribution to and strengthen particularly the architect’s understanding of tall building design, that requires a high level of interdisciplinary approach, by providing a broad
overview of the “tall building” with its general concepts; to demonstrate the importance of human element as a critical component in the design of tall building by clarifying the wind
forces and resulting movements which cause discomfort to building occupants and create serious serviceability issues; and to show the significance of aerodynamic modifications as an effective design approach in terms of mitigating wind excitation. In order to achieve these purposes, firstly, a comprehensive literature survey, which includes the definition, emergence and
historical background, basic planning and design parameters, and lateral load considerations of tall buildings is presented. Following a structural classification of the tall buildings, wind excitation, its negative effects on occupant comfort and serviceabilty issues, and the methods to control wind excitation are studied. Finally, the significance of aerodynamic modifications against wind excitation, which include modifications of building’s cross-sectional shape and its
corner geometry, sculptured building tops, horizontal and vertical openings through-building, are presented from the scholarship on this topic.
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Dear all civilea users.
As you know we do not deactivate users that regustered and have minimum activity in forum. They used forum feature free for more than 3 years.
Our policy is active user can use forum free and others need to pay to use forum.
At this stage we decided to deativate registered users that have not enough activity recently.
Be informed that activity is not mean useless posts so useless post lead to be ban rapidly.
We want to inform you by this post all inactive registered users that have not bought subscription plan yet will be downgraded to awaiting activation group soon.
I note that donors and subscriber are not included this action.
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Fazlur R. Khan Ph.D Thesis in University of Illinois
PREFACE
The studies of rectangular cross-sections reported in Chapters I-IX were carried out by Mr. Khan as a Ph.D. Thesis project in his capacity as a full-time graduate student in the Civil Engineering Department of the University of Illinois. Chapters I-IX of this report and the related figures are identical with his thesis.
The studies of the generalized unsymmetrical section and of symmetrical I-beams were made by Mr. Khan "during the Summer of 1955 while he was employed as a Research Assistant in Civil Engineering on the staff of this project. They are included in Chapters X-XII as a supplement to the original thesis.
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