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Amakan are used as walls in the traditional nipa huts (bahay kubo) of the Philippines. They are lightweight and porous, allowing air circulation to keep buildings cool in the hot tropical climate. The porosity also balances pressure inside the house during strong winds, minimizing roof damage. [4] Amakan needs to be treated before installation.
This process is similar to the Les Bois Perdure treatment in that it uses a steam environment at atmospheric pressure to treat the wood. However, this process can also be used on "green" wood and was the most widely used commercial process as of 2004. [5] [10] Genuine industrial scale ThermoWood process was developed in Finland in 1990's.
Apart from structural wood preservation measures, there are a number of different chemical preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend the life of wood, timber, and their associated products, including engineered wood. These generally increase the durability and resistance ...
It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects. Like other copper-based wood preservatives, it imparts a greenish tint to treated timber. CCA was invented in 1933 by Indian chemist Sonti Kamesam, and patented in Britain in 1934.
Towards the centre of the trunk, the wood gets less hard. The wood has a Janka ball hardness of 112.5 - 154.7 kgf/cm 2 (1600 – 2200 psi), which is greater than that of oak (70.3 - 84.4 kgf/cm 2) and Douglas fir (35.9 kgf/cm 2). Coconut timber is classified according to three degrees of density: High-density timber (dermal) – hard: 600–900 ...
Wood products treated with ACQ preservative were commercially produced in Canada for the first time in 2004. [ 4 ] [ 1 ] ACQ became a widely used wood preservative after concerns were raised about possible environmental contamination by chromium and arsenic from wood treated with chromated copper arsenate (CCA), through contact (especially in ...
Philippine mahogany is a common name for several different species of trees and their wood. Botanically, the name refers to Toona calantas in the mahogany family, Meliaceae. It is endemic to the Philippines. In the US timber trade, it is often applied to wood of the genus Shorea in the family Dipterocarpaceae.
The Rizal Shrine in Calamba is an example of bahay na bato.. Báhay na bató (Filipino for "stone house"), also known in Visayan languages as baláy na bató or balay nga bato, and in Spanish language as Casa de Filipina is a type of building originating during the Spanish colonial period of the Philippines.