Expansion into mid-rise, high-rise and non-residential applications presents one of the most promising avenues for the North American wood industry to diversify its end use markets. This may be achieved by:
■ Designing to new building heights with Light Frame Wood Construction
■ Revival of Heavy Timber Frame Construction
■ Adoption of Cross-laminated Timber (CLT)
■ Facilitating Hybrid Construction
There are concerted efforts both in Canada and in the United States towards realizing that goal. In fact, the Canadian provinces of British Columbia and Quebec went even further and created specific initiatives to support the use of wood in those applications.
This Handbook is focused on one of these options – adoption of cross-laminated timber (CLT). CLT is an innovative wood product that was introduced in the early 1990s in Austria and Germany and has been gaining popularity in residential and non-residential applications in Europe. The Research and Standards Subcommittee of the industry’s CLT Steering Committee identified CLT as a great addition to the wood product toolbox” and"expects CLT to enhance the re-introduction of wood-based systems in applications such as 5- to 10-story buildings where heavy timber systems were used a century ago. Several manufacturers have started to produce CLT in North America, and their products have already been used in the construction of a number of buildings.
CLT, like other structural wood-based products, lends itself well to prefabrication, resulting in very rapid construction, and dismantling at the end of its service life. The added benefit of being made from a renewable resource makes all wood-based systems desirable from a sustainability point of view.
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Article: Dealing With Epistemic Uncertainty In Fractured Rock Masses
Author(s): A. Bedi (Imperial College) | J. P. Harrison (University of Toronto)
Document ID ISRM-EUROCK-2012-157
Source ISRM International Symposium - EUROCK 2012, 28-30 May, Stockholm, Sweden
Publication Date 2012
Publisher International Society for Rock Mechanics
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Roller-compacted concrete (RCC) is a concrete of no-slump consistency in its unhardened state that is typically transported, placed, and compacte using earth and rockfill construction equipment. This report includes the use of RCC in structures where measures should be taken to cope with the generation of heat from hydration of the cementitious materials and attendant volume change to minimize cracking. Material mixture proportioning, properties, design considerations, construction, and quality control are covered.
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For the last couple of decades it has been recognized that the foundation material on which a structure is constructed may interact dynamically with the structure during its response to dynamic excitation to the extent that the stresses and deflections in the system are modified from the values that would have been developed if it had been on a rigid foundation. This phenomenon is examined in detail in the book. The basic solutions are examined in time and frequency domains and finite element and boundary element solutions compared. Experimental investigations aimed at correlation and verification with theory are described in detail. A wide variety of SSI problems may be formulated and solved approximately using simplified models in lieu of rigorous procedures; the book gives a good overview of these methods. A feature which often lacks in other texts on the subject is the way in which dynamic behavior of soil can be modeled. Two contributors have addressed this problem from the computational and physical characterization viewpoints.
The book illustrates practical areas with the analysis of tunnel linings and stiffness and damping of pile groups. Finally, design code provisions and derivation of design input motions complete this thorough overview of SSI in conventional engineering practice.
Taken in its entirety the book, authored by fifteen well known experts, gives an in-depth review of soil-structure interaction across a broad spectrum of aspects usually not covered in a single volume. It should be a readily useable reference for the research worker as well as the advance level practitioner.
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This is a modern book on fluid mechanics that is written in a way needed these days to teach the subject to students in engineering and science at higher educational institutes. The book is well structured for this purpose and is arranged in a logical teaching sequence of chapters. It is starting with an introductory chapter that contains also the summary of the history of fluid mechanics. In two chapters the basic knowledge in mathematics and physics is summarized to provide the background information needed by the students to enter the fluid mechanics. Kinematics of fluid motion is briefly described followed by the complete derivations of the differential form of the continuity and momentum equations, as well as the mechanical and thermal form of the energy equation. Subjects like hydrostatics, similarity theory, potential flows, gas dynamics etc. are treated in an introductory way to lead the students into fluid mechanics. The t_ij terms are introduced to describe the molecular momentum transport and their complete derivation is given by looking at the basis of molecular motions like that in an ideal gas. Subjects like one-dimensional viscous flows, stationary and in stationary, are treated to give the students an introduction into laminar flows. Wave motions in fluids, low Reynolds number flows, high Reynolds number flows and flows with heat transfer are treated to permit the students to get introductory treatments of important parts of fluid mechanics. Introductions are also provided into numerical computations of flows, into turbulence, as well as into measuring techniques as applied in fluid mechanics. In this way, the entire theory and practise of fluid mechanics is treated in the book, providing the student with information needed for more advanced books in specialized subjects of fluid flow treatments.
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Dear Admin and Moderators
I would like to suggest to look into Codes, Manual & Handbook forum.
As of today when we do the searches we can see the following results.
AISC subsection exist (3 pages )
ACI subsection exist (3 pages)
ASTM subsection exist ( 2pages)
EuroCode subsection exist (1 page)
___________________
ASCE not exist as a subsection (5 pages)
AISI not exist as a subsection (1 page)
ICC not exist as a subsection (1 page)
___________________
I am thinking that , they may be they added.
Because of their importance and popularity. (I also realize that it is a lot of work)
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Calculation of Earthquake Actions on Building Structures in Australia
Author: N.T.K. Lam University of Melbourne, Australia B.A. Gaull Guria Consulting, Western Australia J.L. Wilson Swinburne University of Technology, Melbourne, Australia | Size: 682 KB | Format:PDF | Quality:Unspecified | Publisher: EJSE Special Issue: Loading on Structures | Year: 2007 | pages: 19
ABSTRACT: This paper presents from first principles methods of evaluating the seismic performance of a building using the method of inertial forces, method of maximum energy and method of maximum displacement. The introduction of these methods forms the main thrust of the paper. Importantly, the building can be deemed safe should this be indicated by any one of the three methods none of which requires the natural period of the building nor structural response factors to be estimated. Whilst these methods are very simple and consume little time to apply, the accuracies of the results are comparable with those from response spectrum methods. It is noted that the fundamental basis of each of these methods is very consistent with the new response spectrum model stipulated by the new Australian standard for seismic actions. A succinct and insightful account of the development of the seismic hazard model for Australia is also provided followed by a commentary on the use of dynamic analysis methods in practice. 22
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The paper deals with the extension of the N2 method to asymmetric building structures, represented by a 3D structural model. The results of recent parametric studies suggest that in the majority of cases an upper limit for torsional effects can
be estimated by a linear dynamic (spectral) analysis. Based on this observation, it is proposed that the results obtained by pushover analysis of a 3D structural model be combined with the results of a linear dynamic (spectral) analysis. The former results control the target displacements and the distribution of deformations along the height of the building, whereas the latter results define the torsional amplifications. In the paper, first the theoretical background of the transformation of a 3D MDOF model to an equivalent SDOF model is given. Then, the proposed extended N2 method is summarized and applied to a test example of an asymmetric three-storey reinforced concrete frame (“SPEAR”) building. The results are compared with results of nonlinear dynamic time-history
analyses.
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