Forester Licensure Exam Reviewer – Wood Utilization and Engineering [Practice Test 1]
Resin obtained from Anisoptera thurifera
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Grooved or notches made in cutting with saw
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The property of wood which exhibits different physical and chemical characteristics along it planes
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Plywood that is capable of withstanding prolonged exposure to severe service condition
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It is the lengthwise curvature of the narrow surface of the board.
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It refers to any irregularity or deviation from the qualities that make the wood suitable for a particular end use
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Wood with completely filled resin canals
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An example of wood boring mollusk
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A kind of decay when both the cellulose and lignin is removed
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Which is the best species for fuel wood production?
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A classification of lumber which are used for general building and construction purposes
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It is used for smoking fish
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An open joint extending through or partially through a panel, which result when side by side core veneers are not tightly buttered together.
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An empty cell process which applies air pressure above atmospheric pressure to force air into the wood cells before the impregnation of preservative
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The first strength property of a wood affected by decay
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A complex phenolic polymers of irregular structures in wood
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The growth of tissues found inside the vessel
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Longitudinal or axial wood cells that function mainly for food storage
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Load where the force acts over a long period of time is called?
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General term for cup, bow, twist or crook
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Speed up chemical reaction in the mix
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A process of sawing boards to desired dimension.
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It is the standard method of treating with all water-borne preservatives
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It is a term used for the dilute suspension of separated fibers in water
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The sour smell of logs submerged in water is an indication of what?
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Characterized by a surface tension set in the shell and compression set in the core of a dried lumber
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The term used to indicate the rate flow of gases and liquids in wood
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Plain sawed lumber is synonymous to
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A kind of decay where only the cellulose removed
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If the moisture content of a wood sample is 30% and its ovendry weight is 100g, what is its green weight?
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Species that smells like old leather
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Consist of making a series of narro holes or slits in the wood about 1/2 to 3/4 inch deep. This allow preservatives to better penetrate impregnation-resistant wood species and make possible a more uniform penetration to atleast the depth of holes.
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It is also known as bethel process
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What is the conversion efficiency of a sawmill if the log input is 45 cu. m. and lumber output of 9,540 ft.?
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The smallest aggregations of cellulose molecules in the plant cell
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It is the lengthwise curvature of the wide surface of the board.
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The moisture content of a piece of wood with green and ovendry weight of 300 and 180 grams respectively
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It is used to hold the log or can steadily during sawing
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Common type of fillers except
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Bubble-like outgrowth of the parenchyma cells adjacent to the vessels are called what?
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Line AB was measured by a 25 meter tape and was found to be 2.0 km. Then when compared with the standard tape was found to be 10 cm. short. What is the correct distance of AB?
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Chromated copper arsenate (CCA) is an example of what?
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If the sawmill percentage recovery is 55% and its target output is 23,320 board feet. What is the required volume in cu. m. of log?
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The cutting unit system of lumber is used in
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A treatment which reduce combustibility in wood
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Analyze the statements. I. Majority of Philippine timbers are diffused porous II. Kalantas exhibits solitary pores.
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A reaction wood formed on the upper side of leaning hardwoods.
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Measure if stiffness of a beam or column
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This organisms damages wood in salt or brackish water
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A highly purified liquid products used in the manufacture of rayon, tire, cord, cellophane, plastic, etc.
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Recommended treatment for marine piles
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These are classification of fiberboard according to surface finish except for?
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The fiber saturation point of wood is when?
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It is consisted of cellulose and hemicellulose
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A lumber that has not been dressed
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The outgrowth of tissues found inside the vessel
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A series of marking made by machining knives in dressed lumber
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Causes blunting tools during machining of wood
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Removing moisture from green wood to improve its serviceability
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Ratio of calculated or lotted linear error to the measured and recorded perimeter
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A crude method of measuring horizontal distance
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A yellow coloring dye obtained from the rhizomes of Cucuma longa and is grown in Northern Luzon
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Occurs when the ends of the boards dry much faster than their major portions.
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Strips of short horizontal that extends in a radial direction
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The state in which the particles of the adhesive are held together internally
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A process which employs water-borne preservatives
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An oily byproduct of making coke from bituminous coal, is widely used as a preservative for such products as railroad ties, large timbers, fence posts, poles, and pilings.
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One of the earliest glue derived from milk
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It is the light-colored wood beneath the bark that is susceptible to stain
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In hardwoods, the main artery in the movement of sap
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A generic term for panel manufactured from lignocellulosic materials (usually wood), primary in the form of discrete pieces of particles.
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Creosote is often called coal tar because of its close relationship to which compounds?
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Reducing logs to smaller pieces
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Consist of the narrow ribbon like strand of wood
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The poorer side of the plywood panel
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Requirements for the inception, growth, and development of decay fungi
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Load where the force acts over a long period of time is called?
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What is the interior angle formed by two survey lines S 10° E and S 35° W?
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Internal checking when drying stresses that developed exceed the strength of wood
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It provides rigidity of the tree making upright growth possible
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A fungal organism that attack wod
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A thin sheet of wood or peeled from a log or flitches
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An example of crustaceaen borer
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Cutting glue by the action radio frequency energy
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Longitudinal or axial wood cells that function mainly for food storage
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The amount of water in wood usually expressed as a percentage of its ovendry weight
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These chemicals are generally insoluble in water. They are usually dissolved in petroleum or other organic solvents in order to penetrate wood
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An example of wood boring mollusk
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The breaking strength of a beam expressed in stress per unit area
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It is the principal chemical constituents of the cell walls in higher plants
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Bark or lack of wood
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Soft rot fungi usually attack green (water saturated) wood (high M. C.), causing a gradual softening from the surface inward that resembles brown rot.
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The curving of the edges so that the four corners are no longer in one plane
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Pinholes are borer of holes not over
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Pigments obtained from various parts of plants which are used for colony textile and other fibers.
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A method of preserving wood consists merely of immersing wood in a preservative solution for few seconds or minutes that ensures more adequate penetration because all surfaces come in contact with the preservative
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A brackish or brownish oil made by distilling coal tar
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