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V.K. Sulc
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EXPOSURE TESTS OF SURFACE TREATED SAWN COCONUT TIMBER R.N. Palomar; P. Jensen; V.K. Sulc
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.224

Abstract

An investigation was made to determine the relative performance of three readily available inorganic chemicals containing either copper or chromium when applied singly or in combination to sawn coconut timber surfaces. The treating solutions, consisting of chromic acid (H2CrO4) sodium chromate (Na2CrO4) and copper sulphate (CuSO4), were applied by trush to wood surfaces with one coating at the rate of approximately 155 grams per square meter. The specimens were exposed outdoors on racks inclined at 450 angle and facing south. Results after 3 years of test showed that treatments with mixture of H2CrO4 and CuSO4 or combination of Na2CrO4 and CO4 performed better than single application of either H2Cr4 or Na2CrO4. The former treatments still showed uniform and pleasing appearance after the exposure period.
PERFORMANCE OF COCONUT TIMBER UNDER FIELD AND SERVICE CONDITIONS R.N. Palomar; V.K. Sulc
International Coconut Community Journal Vol 6 No 01 (1990): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v6i01.235

Abstract

Approximately 3.4 million hectares of coconut plantation arc spread ail over the coconut producing provinces in the Philippines. Of these, 50% arc found in Mindanao, 21.l % in the Visayas and 28.9% in Luzon including the Southern Tagalog and Bicol regions (PCA Annual Report, 1986). It has been estimated that 30% of the area planted to coconut arc 60 years old and over. These coconut stands are considered unproductive and should be replanted with improved and high‑yielding coconut varieties.
ROOF AND SIDE WALL SHINGLES FROM COCONUT PALM WOOD V.K. Sulc
International Coconut Community Journal Vol 6 No 02 (1990): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v6i02.238

Abstract

In a number of coconut palm growing countries, thatched roofs made from indigenous materials such as palm leaves and from suitable tropical grasses such as Imperata cylindirca L. (Cogon) are traditionally used. The most suitable and durable among the palms appear to be the mature leaves of nipa palm. Depending on the quality of leaves and thickness of layers, the serviceable life span of thatched roof is approxi­malely 5 to 8 years, coconut palm leaves are one of the poorest materials for roofing of permanent dwelling. They easily become brittle when dry and break into bits during rain and wind.
Co-Authors P. Jensen R.N. Palomar