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All Outputs (9)

Wood properties & strength grading (2022)
Presentation / Conference Contribution
Ridley-Ellis, D. (2022, December). Wood properties & strength grading. Presented at James Jones & Sons Architects' and Structural Engineers' Open Day, Lockerbie

James Jones & Sons held an open day for architects and structural engineers at its flagship sawmill site in Lockerbie. "James Jones & Sons' new visitor building at its flagship sawmill site in Lockerbie has attracted considerable interest in the... Read More about Wood properties & strength grading.

A little about the verification of a lot (EN 14358) (2022)
Presentation / Conference Contribution
Ridley-Ellis, D. (2022, September). A little about the verification of a lot (EN 14358). Paper presented at Northern European Network for Wood Science and Engineering (WSE) 2022, Goettingen, Germany

Sometimes it is necessary to estimate the mean and/or percentile of a certain population by limited sampling, in order to compare with target values. Done properly, the method should account for random chance in the sampling so that the two risks can... Read More about A little about the verification of a lot (EN 14358).

Can you guess the strength of timber? How (your) wood quality perceptions relate to reality (2022)
Presentation / Conference Contribution
Cramer, M., & Ridley-Ellis, D. (2022, September). Can you guess the strength of timber? How (your) wood quality perceptions relate to reality. Paper presented at Northern European Network for Wood Science and Engineering (WSE) 2022, Goettingen, Germany

UK-grown timber is often perceived to have “low quality”, and most of the UK’s sawn timber is used for fencing and packaging material. Much of the resource could be used as construction timber, as UK spruce and other softwoods can be strength graded... Read More about Can you guess the strength of timber? How (your) wood quality perceptions relate to reality.

The assessment of the mechanical and physical properties of in situ timber (2022)
Presentation / Conference Contribution
Bather, M., & Ridley-Ellis, D. (2022, September). The assessment of the mechanical and physical properties of in situ timber. Paper presented at Northern European Network for Wood Science and Engineering (WSE) 2022, Goettingen, Germany

The refurbishment of existing buildings is a more sustainable option than demolition and reconstruction, leading to significant reductions in CO2 emissions and many other benefits. Policy across Europe is leaning more towards retaining and upgrading... Read More about The assessment of the mechanical and physical properties of in situ timber.

Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function (2022)
Journal Article
Pantelić, F., Šumarac Pavlović, D., Mijić, M., & Ridley-Ellis, D. (2022). Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function. Archives of Acoustics, 47(4), 539-546. https://do

The aim of this research is to use a simple acoustic method of a very near field recording, which enables measurement and display of oscillation modes, to estimate the velocity of flexural waves, based on the wavelengths of standing waves measured on... Read More about Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function.

Strength Grading of Timber in the UK and Ireland in 2021 (2022)
Journal Article
Ridley-Ellis, D., Gil-Moreno, D., & Harte, A. M. (2022). Strength Grading of Timber in the UK and Ireland in 2021. International Wood Products Journal, 13(2), 127-136. https://doi.org/10.1080/20426445.2022.2050549

This paper summarises the state of the art for strength grading of construction timber grown in the United Kingdom and the Republic of Ireland. It includes the latest approvals based on recent research on spruce, larch and Douglas-fir. It lists the f... Read More about Strength Grading of Timber in the UK and Ireland in 2021.

Wood Information Sheet WIS 2/3-67 Specifying British-grown timbers (2022)
Other
Ridley-Ellis, D. (2022). Wood Information Sheet WIS 2/3-67 Specifying British-grown timbers. [pdf]

The purpose of this Wood Information Sheet (WIS) is to summarise the characteristics, and the current and potential uses, of timber grown in the UK (England, Scotland, Wales and Northern Ireland), which we also refer to in this WIS as ‘British-grown... Read More about Wood Information Sheet WIS 2/3-67 Specifying British-grown timbers.

The relationship between bending and tension strength of Irish and UK spruce and pine (2022)
Journal Article
Gil-Moreno, D., Ridley-Ellis, D., O'Ceallaigh, C., & Harte, A. M. (2022). The relationship between bending and tension strength of Irish and UK spruce and pine. European Journal of Wood and Wood Products, 80, 585-596. https://doi.org/10.1007/s00107-022-01

The correct characterisation of wood properties is fundamental for the best utilisation of resources. In Europe, grading is defined by strength classes that are determined based on either bending or tension tests. The European standards give equation... Read More about The relationship between bending and tension strength of Irish and UK spruce and pine.