Assessment of timber floors by means of non-destructive testing methods

Ilharco, Tiago; Lechner, Thomas; Nowak, Tomasz

doi:10.1016/j.conbuildmat.2015.05.133

Cited by 16 publications

(9 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within this framework, permanent deformations due to creep, plasticity in the material or fatigue and rigid displacement leading to dislocations are the results of one or more combined physical, environmental or chemical actions [34] Different, complementary approaches are suggested: proof loading [35], visual strength-grading [36]; [37], and Non-Destructive (ND) [38]; [39]; [40] or Semi-Destructive (SD) measurement of properties [41]; [42]. The application of one or more of the above mentioned approaches depends on the specific case (i.e., type of structure, accessibility, etc.).…”

mentioning

confidence: 99%

Assessment of heritage timber structures: Review of standards, guidelines and procedures

Riggio

D’Ayala

Parisi

et al. 2018

Journal of Cultural Heritage

View full text Add to dashboard Cite

This paper reviews the official documentation (standards, guidelines and procedures) available for the assessment of heritage timber structures. The subsequent discussion does not catalogue all relevant technical literature. Instead, it intends to convey the state of background knowledge, recommendations and code rules using some illustrative examples. A specific focus is given to visual inspection as a fundamental first step for all different scopes and levels of assessment. The objectives of this review are to: 1) highlight the gaps and limitations in the currently available tools as well as the need for standardization; 2) contribute to the definition of an ontological approach, Highlights • A review of the methodological, normative and operational tools for the assessment of heritage timber structures. • A critical discussion of the gaps and limitations of current assessment tools. • An introduction to a proposed inspection form for heritage timber roofs.

show abstract

mentioning

confidence: 99%

Assessment of heritage timber structures: Review of standards, guidelines and procedures

Riggio

D’Ayala

Parisi

et al. 2018

Journal of Cultural Heritage

View full text Add to dashboard Cite

show abstract

“…A number of research using these two methods, attempts to assess their effectiveness and find correlation between physical and mechanical properties of wood and parameters from acoustic testing methods were undertaken (among others [2,3,4,5,6,7,8]).…”

Section: Correlation Between Physical and Mechanical Properties Of Womentioning

confidence: 99%

Investigation of wooden sheet pile wall in an aggressive environment using non-destructive methods

2018

Self Cite

View full text Add to dashboard Cite

The paper presents the study of the strength parameters of wood samples from the retaining structure, working for about 60 years in an aggressive sea water environment. Samples from the variable water level zone and situated in the watered ground were tested. Non-destructive examinations were performed using the following methods: the stress wave technique and the ultrasonic wave technique. The results presented below can lead to the conclusion that both methods: the stress wave by Fakopp Microsecond Timer device and the ultrasonic wave by Sylvatest Trio correspond with each other and result in similar outcomes. However, in order to obtain more detailed and comprehensive information on the elements properties, more research should be conducted.

show abstract

“…Such a stress-wave-based condition assessment strategy is simply illustrated in Fig. 7, where critical areas from the visual inspection can be measured stepwise in different directions to identify decay and its extent on the structural element at different locations along the beam [7,8]. The transmission time is highly correlated with the MOE, eqn (2), which is of great importance for evaluation of the structural soundness of beams, purlins and columns in large timber structures [9].…”

Section: Stiffness Measurements Using Stress Wave Timingmentioning

confidence: 99%

Non-destructive testing of the historic timber roof structures of the national museum in stockholm, sweden

Ericsson¹,

Karawajczyk²,

Kliger³

et al. 2017

Int. J. HA

Self Cite

View full text Add to dashboard Cite

The National Museum in Stockholm is Sweden's leading museum of art and design. Behind the now closed doors of the National Museum and its construction coverings a renovation project is taking place, which began in 2014 and will be completed in 2018. The renovation project will create a modern museum, a brighter atmosphere for the arts and for its visitors. Part of the renovation project was to design and upgrade the timber roof structure for new loads according to Eurocode 5. As the roof structure was originally built in 1860, it was important to evaluate the condition and mechanical properties of the original load-bearing timber members. The roof structure, which is of main interest, comprises roof trusses and lantern structures. The main aim of the project regarding the timber roof structure in the National Museum was a safety verification in both the ultimate state (ULS) and the serviceability limit state (SLS). The preliminary capacity calculations for the roof structure showed that the roof members were under the new load conditions (with increased loads due to security and environmental requirements) utilized above 100%. Therefore, an investigation into the properties of the old timber members and connections was of vital importance. The need for non-destructive testing (NDT) of structural timber is well known under the name of strength grading and the concept has been used for many years to classify timber with respect to mechanical performance. The stress wave technique used in the project was based on commercial instruments such as FAKOPP®. The timber quality investigation for the attic roof structures showed that the material was generally in very good condition. As a result, according to SS-EN 338-2009, the timber strength could be assigned strength class C27-C30. Based on the results of the investigation, further design of strengthening works and refurbishment of the roof structure were being undertaken.

show abstract

Assessment of timber floors by means of non-destructive testing methods

Cited by 16 publications

References 14 publications

Assessment of heritage timber structures: Review of standards, guidelines and procedures

Assessment of heritage timber structures: Review of standards, guidelines and procedures

Investigation of wooden sheet pile wall in an aggressive environment using non-destructive methods

Non-destructive testing of the historic timber roof structures of the national museum in stockholm, sweden

Contact Info

Product

Resources

About