Briefing: Super tall timber – Oakwood Tower

Foster, Robert M.; Ramage, Michael

doi:10.1680/jcoma.16.00034

Cited by 17 publications

(9 citation statements)

References 6 publications

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“…In particular, future research should delve deeper into the structural system-sustainability relationship of supertall towers, and in this context, supertall timber building projects may come to the fore (Johnson et al. , 2014; Foster and Ramage, 2017; Ramage et al. , 2017).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, as innovative structural systems are developed for the next generation of sustainable, ultra-tall buildings and megastructures, the relationships between the structural system and other design parameters may change, which will require further research. In particular, future research should delve deeper into the structural system-sustainability relationship of supertall towers, and in this context, supertall timber building projects may come to the fore (Johnson et al, 2014;Foster and Ramage, 2017;Ramage et al, 2017).…”

Section: Structural Systems and Planning Considerationsmentioning

confidence: 99%

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A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

Ilgın

2022

IJBPA

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PurposeThe aim of the study is to provide a comprehensive understanding of interrelations of structural systems and main planning considerations in supertall buildings (≥300 m).Design/methodology/approachData were collected from 140 contemporary supertall towers using the case study method to analyze structural systems in the light of the key design considerations to contribute to the creation of more viable supertall building projects.Findings Central core typology, outriggered frame system, composite material and tapered prismatic and free forms were the most preferred features in supertall building design. Shear walled frame and tube systems occurred mostly in the 300–400 m height range, while outriggered frame systems were in the range of 300–600 m in height. Asia, the Middle East and North America mainly preferred outriggered frame systems, followed by tube systems. Considering the building function and form, the most preferred structural system in each of these groups was outriggered frame system, while mixed-use function stood out in all structural systems except in shear walled frame system.Originality/valueTo date, there has been no comprehensive study in the literature of the interrelations of structural systems and important planning considerations in the design of contemporary supertall towers through a large set of study samples. This critical issue was multidimensionally explored in this paper in light of 140 detailed case studies of supertall buildings around the world.

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Section: Discussionmentioning

confidence: 99%

Section: Structural Systems and Planning Considerationsmentioning

confidence: 99%

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

Ilgın

2022

IJBPA

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“…Oak is one of the most used hardwoods in structural and building applications [1,2], due to its relatively high strength and hardness and its high resistance to biological attacks [3]. Moreover, its aesthetic qualities make oak an appealing material for art and decoration purposes, including furniture, veneer decorations, and panel paintings [4,5].…”

Section: Introductionmentioning

confidence: 99%

A 3D multi-scale hygro-mechanical model of oak wood

Livani

Suiker

Crivellaro

et al. 2023

Preprint

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A multi-scale framework is proposed for the prediction of the macroscopic hygro-elastic properties of oak wood. The distinctive features of the current multi-scale approach are that: i) four different scales of observation are considered, which enables the inclusion of heterogeneous effects from the nano-, micro-, and meso-scales in the effective constitutive behaviour of oak at the macro-scale, ii) the model relies on three-dimensional material descriptions at each considered length scale, and iii) a moisture-dependent constitutive assumption is adopted at the nano-scale, which allows for recovering the moisture dependency of the material response at higher scales of observation. In the modelling approach, oak wood is considered homogeneous at the macro-scale. The meso-scale description considers the cellular structure of individual growth rings with three different densities. At the micro-scale, the heterogeneous nature of cell walls is described by the characteristics of the primary and secondary cell wall layers. Finally, the nano-scale response is determined by cellulose micro-fibrils embedded in a matrix of hemicellulose and lignin. The oak properties at the four length scales are connected via a three-level homogenization procedure, whereby, depending on the geometry of the fine-scale configuration, an asymptotic homogenization procedure or Voigt averaging procedure is applied at each level to determine the effective hygro-elastic properties at the coarse scale. In addition, the moisture ad-sorption isotherms at each scale are constructed from a volume-weighted averaging of the moisture adsorption characteristics at the scale below. The computational results demonstrate that the moisture-dependent, hygro-elastic behaviour of oak wood is predicted realistically at each considered length scale, thereby revealing the influence of the material density, the micro-fibril orientation, and the hygro-elastic properties at the underlying scales. The computed macro-scale properties of oak are in good agreement with experimental data reported in the literature.

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“…The general issues have included papers on materials as diverse as cooking oil (Vu et al, 2017), foam insulation (Densley Tingley et al, 2017), epoxy resin-soil-cement mixtures (Anagnostopoulos, 2017), Timber (Foster and Ramage, 2017), sugarcane bagasse bricks (Madurwar and Ralegaonkar, 2017) and bitumen coatings (Abubaker et al, 2017), as well as a range of contributions covering concrete, cementitious mortar and related materials and a book review relating to centrifuge monitoring for civil engineers.…”

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confidence: 99%

Editorial

Crofts¹

2017

Proceedings of the Institution of Civil Engineers - Constructio

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It is a great pleasure to introduce this issue, the last of 2017, with my first editorial as a member of the Editorial Advisory Panel of Construction Materials. While this issue includes papers generally around the subject of that ubiquitous construction material, concrete, this year has seen a range of materials covered by this journal.The year began with the second instalment of papers on the theme of earthen construction and a second themed issue was published in August, focussing on asphalt. The general issues have included papers on materials as diverse as cooking oil This final issue of the year includes three contributions generally covering cementitious materials. These cover a range of applications, from reuse of crushed concrete as aggregate in road construction to enhanced durability by protecting reinforcement and enhancement of mortar performance by modification with nanoparticles.The first article (Dettenborn et al., 2017) presents an analysis of the long term behaviour of crushed concrete aggregate in road construction. This study utilises almost 20 years of data from trial sections of road constructed in Finland using crushed concrete aggregate in the base and subbase courses. The data analysed showed that the trial sections built using 50 mm maximum sized crushed concrete aggregate gained 10-25% more bearing capacity in 13-15 years than did reference pavement sections built using crushed rock aggregates.The second article (Ksia˛żek, 2017) presents the results of research and analyses into the protection of reinforcing steel and concrete itself using polymer-sulfur composites. Initial analyses allowed the optimisation of composition for further research. Adhesion and durability tests have been undertaken in a range of environments, finding that the corrosion rate of protected reinforcement was reduced compared to unprotected and that these composites can have a role in protecting concrete from corrosion.The final paper for this year (Kazempour et al., 2017) presents findings from a study into the alleviation of the effects of low temperatures on masonry construction using nano-alumina and nano-silica as additions in mortar mixtures for joints. The mortars were mixed and cured at 5°C and a range of properties assessed at different ages. The study found that the type of nanoparticle used and its dosage had pronounced effects on the results of the various tests. The overall trends indicate that a 6% addition of the nanoparticles can lessen the adverse impacts of low temperature on masonry mortars, including on the rate of hardening and kinetics of hydration.

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Briefing: Super tall timber – Oakwood Tower

Cited by 17 publications

References 6 publications

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

A study on interrelations of structural systems and main planning considerations in contemporary supertall buildings

A 3D multi-scale hygro-mechanical model of oak wood

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