JSS 1 Basic Technology (1st, 2nd & 3rd Term)

Technology (“science of craft”, from Greek τέχνη, techne, “art, skill, cunning of hand”; and -λογία, -logia[2]) is the collection of techniques, skills, methods, and processes used in the production of goods or services or in the accomplishment of objectives, such as scientific investigation. Technology can be the knowledge of techniques, processes, and the like, or it can be embedded in machines to allow for operation without detailed knowledge of their workings. The simplest form of […]

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

Types of building 1. 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

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

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 is of advantage. A

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 compasses 5.Divider 6.Protractor 7.

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 construction industries. We study

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)

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.

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

Workshop rules and safety considerations Workshop safety is everyone’s responsibility, the following rules have been put in place to ensure the safety of all students and staff. Please read the safety rules carefully before entering the workshop. Workshop rules Student affected by drugs or alcohol are not permittedin the workshop Students with any health problems that

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

Metals – Ferrous and Non Ferrous 1. Metals. Exercise 1: Make a list of all the different metals that you know about. 2. Metals. Two main groups, 1.Ferrous. 2.Non-Ferrous. 3. Metals Ferrous Pure Ferrous Metals Non Ferrous Ferrous Alloys Pure Non Ferrous Metals Copper Non Ferrous Alloys Alum. Brass Bronze Solder Zinc Tin High Speed Steel Copper

Rules and Regulations 1) Never work alone in the workshop, work at least in pairs. This is so because in case of industrial/workshop accident the other partner will be a helper (Ecclesiastes 4:9-10) it’s all about Teamwork. 2) Think about what you are doing; think before you start a job and during the entire time

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

Ceramic Material Characteristics Ceramics and glasses are inorganic, nonmetallic materials consisting of metallic and nonmetallic elements bonded primarily with ionic and covalent bonds. These high strength bonds give rise to the special characteristics of these materials. They occupy a unique place in the spectrum of engineered materials offering many desirable alternatives to the metals and

Differences and similarities between metals and non-metals Properties: Metals: Non-metals: Strong Brittle Malleable and ductile Brittle React with oxygen to form basic oxides React with oxygen to form acidic oxides Sonorous Dull sound when hit with hammer High melting and boiling points Low melting and boiling points Good conductors of electricity Poor conductors of electricity

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

Rubber vs. Plastic In the past, people have seen the progress of technology. From the simple usage of wood and cement to the invention of metal, mankind has really made great progress to become what they are today. Along with this progress are some changes to their lifestyle. These changes were brought about by the