Investment Reduction and Increase in Service Life of Kattumaram Logs - BOBP/WP/1
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Kattumaram logs have a relatively short service life because of rotand subsequent water absorption. The logs are also subject to high wear and tear due to frequent beaching and alternate wetting and drying. Melia Dubia and Albizzia Molluccana are two log species from Sri Lanka most preferred for the making of kattumarams. Due to their non-availability and the depletion of sources of similar timber from Kerala forests, there has been a steep rise in the prices of logs. Hence the need for ways to lengthen the life and lower the cost of the traditional type of kattumaram logs. Increase of Service Life: Both chemical and physical means in the form of Copper Chrome Arsenic compounds (ASCU), coal-tar creosote and reinforced plastic sheathing, have been identified to increase the service life of kattumaram logs. Specifications for treatment have been recommended. Investment Reduction: Ten different species of timber abundantly available in the Andaman forests have been identified as substitutes for the traditional timber species. Two in particular — “Didu” and ‘White Dhup” — have been recommended for trials.