Defects in wood: wood defects Timber is far from being a stable and consistent material. One of the biggest challenges of working with timber is learning to work within the constraints of a timber’s. The following are a list of the most common wood defects. BOW (BOWING) The curvature of a piece of sawn timber […]
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What is wood conversion? Wood conversion is the process where a newly felled tree is converted into workable lumber. There are many different cuts that can be used to convert a downed tree to lumber. FULL ANSWER If the lumber is going to be used for construction, the wood is cut plain or through and through.
Wood processing is an engineering discipline comprising the production of forest products, such as pulp and paper, construction materials, and tall oil. Paper engineering is a subfield of wood processing. The major wood product categories are: sawn timber, wood-based panels, wood chips, paper and paper products and miscellaneous others including poles and railway sleepers. Forest product processing technologies have undergone extraordinary advances
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We use technology more than ever these days to stay connected to our friends and family, get up-to-date on the latest and greatest happenings in our world and sometimes just to pass the time. With all the computers, tablets, smartphones and other high-tech devices our society is dependent on, we need the skills of professionals
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VOLTAGE (POTENTIAL DIFFRENCE) Difference between points in electric field: the work done in moving a unit electric charge between two points in an electric field. Electric potential: electric potential expressed in volts. It is measured in volts. The instrument for measurement is a voltmeter. RESISTANCE Resistance is the opposition that a circuit, component, or
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ELECTRIC CIRCUITS Electric circuit can be defined as the path provided for easy flow of electric current. It is for conversion of the electric current into useful purposes such as lighting and heating. Electric circuit is connected or fitted with devices that control and measure the current and energy used in the process. Simple electric
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DEFINITION OF MAINTENANCE Maintenance in engineering work is defined as the functions that should be carried out every day in order to keep the plant or any engineering equipment in good operating condition. Any breakdown in plant and engineering equipment is the result of inadequate maintenance of equipment. TYPES OF MAINTENANCE Predictive maintenance: This
In order to work safely and conveniently on any work piece, it needs firmly secured. The devices used for holding these work piece firmly are called holding vices. Holding devices include the following: Vices Clamps Pliers VICES Vices are used for holding objects rigidly in position, so that desired operations can be carried out.
METAL WORK- HAND TOOL – CUTTING AND DRIVING TOOLS CUTTING TOOLS Cutting tools are tools used for cutting materials by either sawing, filing, chiseling, scraping. Cutting tools include the following: Hacksaw Files Chisel Scraper Hacksaw The hacksaw consists of two parts: the frame and the blade. It is used mainly for cutting metals in
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METAL WORK- HAND TOOL – MARKING OUT AND MEASURING TOOLS Metal is one of the materials used in technology for construction and fabrication of devices. Metal as a material can be fabricated into various shapes and products. However, to be able to do that, you need appropriate tools. These tools are either hand tools or
WOODWORK HAND TOOLS – BORING TOOLS, CUTTING TOOLS BORING TOOLS Boring tools are the tools used for making holes on wood. The major tzpes are The brace The bits Gimlet Bradawl THE BRACE: This is a tool used for holding and turning the drill bits or twist drill when drilling hole. There are two
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REVISION ___ is a universal language used for communication among technical people (a) Scaling (b) Technical drawing (c) Sketching (d) Oblique. Technical people include the following except (a) engineers (b) technicians (c) builders and draughtsman (d) lawyer Which of the following is not a drawing instrument (a) set squares (b) French curve (c) microscope (d)
FLOORS This is a flat bottom surface in or on any structure. It is a rigid building assembly that divides space horizontally into stories. It forms the bottom of a room. It may consist of joist-supported wood planks or panels, decking or panels supported by wood or steel beams, a slab of stone or concrete on
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Types of building Bungalow: It is dwelling built in a style developed from that of a form of rural house in India. The original bungalow typically has one story, few rooms, and a maximum of cross drafts, with high ceilings, unusually large window and door openings, and verandas on all sides to shade the rooms
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WOODWORK BENCH A woodwork bench is a platform on which the wood workers perform their wood workers activities. The size of the woodwork bench is usually 2.0m by 0.80m by 0.90m. The centre of the woodwork bench is always lower than the edges and this is called WELL. The function of the well is for
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DEFINTION OF FREEHAND SKETCHING Freehand Sketching is one of the quickest methods by which the shape of an object can be communicated to others. This is done by using a pen or pencil. Architects think more of imaginary objects; they cannot take photographs but express this using freehand sketching. Therefore, the knowledge of freehand sketching
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DEFINITION OF BOARD PRACTICE Board practice is the act of learning how to use drawing instrument on drawing board to draw vertical, horizontal, incline lines etc., in order to display good board practice, it is necessary to use the appropriate drawing instruments which includes the following: 1. Drawing board 2. Tee-square 3. Set-square 4.Pair of
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DEFINITION OF TECHNICAL DRAWING Technical drawing is a universal language used for communication among technical people. Technical people are the engineers, technicians, builders, draughts men, etc. It is the language expressed in terms of graphical illustrations which convey the idea of the shape, size and other features of engineering components used in the manufacturing and
Magnetism is a force that can attract (pull closer) or repel (push away) objects that have a magnetic material like iron inside them (magnetic objects). Magnets can be affected by electricity, which makes them very useful in machines and computers. Magnets are used to make a tight seal on the doors to refrigerators and freezers,
To stop a moving object, a force must act in the opposite direction to the direction of motion. For instance, if you push your book across your desk, the book will move. The force of the push moves the book. As the book slides across the desk, it slows down and stops moving. The force