IRG Documents Database and Compendium

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Your search resulted in 17 documents.

Classifying white rot decay resistance of some hardwoods from Sarawak and Peninsular Malaysia and correlations with their tropical in-ground durability
2012 - IRG/WP 12-10788
White rot wood decay under Malaysian (humid tropical) terrestrial conditions pose more serious threats to the in-ground service life of hardwoods than other common fungal decay types. A study is made on decay resistance variation for a total combined list of 30 Peninsular Malaysian and Sarawak timber species (plus 6 exotic reference temperate commercial woods for comparison) using the laboratory s...
A H H Wong, J M E Jem, Lai Jiew Kok

IRG Documents 2017
2017 - IRG/WP 17-60427
IRG Secretariat

Field stake test assessment with the Pilodyn
1980 - IRG/WP 2136
The Pilodyn, which was originally developed to estimate the degree of soft rot in wooden poles, was thought to have potential for giving a quantitative measure of the extent or depth of decay in field test stakes. In the present work a 2-joule Pilodyn with 2.0-mm diameter pin was used in an attempt to limit depth of pin penetration (to 10-15 mm) without reducing scale sensitivity. The results show...
M E Hedley, R W Naish

The IRG48 Scientific Conference on Wood Protection - Poster abstracts
2017 - IRG/WP 17-60414
IRG Secretariat

Agenda 2017 Plenary Meeting
2017 - IRG/WP 17-60413
IRG Secretariat

Programme. IRG48 Scientific Conference on Wood Protection, 4-8 June 2017
2017 - IRG/WP 17-60415
IRG Secretariat

Budget for 2017 (forecast June 2017)
2017 - IRG/WP 17-60416
IRG Secretariat

Reporting minutes of the Plenary Meeting 2017
2017 - IRG/WP 16-60426
IRG Secretariat

International Directory of Members and Sponsors 2017
2018 - IRG/WP 18-60430
IRG Secretariat

Annual Report 2017
2018 - IRG/WP 18-60431
IRG Secretariat

A serial exposure technique for estimating probable service life of treated timber
1978 - IRG/WP 2111
This paper briefly describes part of our preliminary work aimed at developing a test procedure that culd be adopted as a standard method. A detailed version of the work has been submitted for formal publication. In both papers, the aim is to promote interest in extended laboratory testing of wood preservatives. It is believed that this work may provide the basis of a laboratory test procedure from...
J A Butcher

Comments on leaching in view of accelerated testing
1977 - IRG/WP 294
We developed an accelerated test for leaching at elevated temperatures (75-85°C). This test was used for the examination of 11 preservative formulations containing Cu, Zn and As. The data obtained from these experiments were compared with data on some formulations tested by ASTM standard leaching test. The method consists in making a large surface to volume ratio of wood from a treated block by c...
J Rak

Determination of fungitoxic value of preservatives in laboratory wood-block tests. Part 1: Standard procedures
1989 - IRG/WP 2326
By applying a modified agar-block method, a comparative analysis was made on the toxic value of the wood preservative CCA against the test fungus Serpula lacrymans. The procedure applied to determine the results accounted for different standards: EN (Toxic limit), ASTM (threshold retention), GOST (threshold retention and protection probability), PN (toxic doses) and JIS (value of efficiency). Desp...
J Wazny, J D Thornton

Current state of world standardization in the toxicometric methods for testing of wood preservatives
2007 - IRG/WP 07-20354
The paper presents an outline of the history of forming standardized toxicometric methods for testing of wood preservatives in the world during last 100 years. Numerous studies resulted in three main methods which are currently used for official and basis assessment of biocides: - agar-block method in Europe (EN 113); - soil-block method in the USA and Pacific countries (ASTM D 1413); - modifi...
J Wazny

Natural Durability Variations of Malaysian Timbers from Sarawak after 26 Years Exposure by Stake Test
2009 - IRG/WP 09-10704
An extensive graveyard stake test site was established in 1977 in Sibu, Sarawak, Malaysia, to evaluate the in-ground durability of 132 Sarawak wood species, mainly hardwoods. Test samples were planted at 100 x 50 cm spacing. Authenticated wood specimens from 3 trees of each of 132 species were processed into 20 replicated outer heartwood (or else undifferentiated heartwood) stakes of 19 x 19 x 457...
A H H Wong, Ling Wang Choon

Critical moisture levels and mould resistance of five different wood treatments
2013 - IRG/WP 13-30632
Mould resistance of five different treatments were tested using two methods, a recently developed method for the determination of critical moisture levels of building materials (RHcrit), and ASTM D3273-94. The critical moisture level method exposed samples at 22 °C and 98, 92, 86 and 82% relative humidity (RH) for 12 weeks. ASTM D3273-94 was performed at 29 °C and about 95% RH. Treatments c...
G Bok, P Johansson, A Ekstrand Tobin, S Bardage

State of U.S. forests: Status and projections from the 2017 forest resources report and the 2020 resources planning act assessment
2024 - IRG/WP 24-50399
This presentation provides a comprehensive overview of the state and trajectory of America’s forest land, drawing from the “Forest Resources of the United States, 2017” and the “Future of America’s Forests and Rangelands: Forest Service 2020 Resources Planning Act Assessment.” It describes the current status and historic trends of forest land area, ownership, and volume and then expand...
S Oswalt