Transcription of TECHNOLOGY Grade 9 - Tegnologie
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TECHNOLOGY Grade 9 - Tegnologie
TECHNOLOGY . Grade 9. Ho rskool Gerrit Maritz CONTENTS. Types of Functions of Structural Properties of The design of What is Food Mechanical Control Belt Hydraulic and pneumatic Elektricity vs Electronics ..44. Elektronic Voltage and Conductors and Electronic Logic TECHNICAL 3-D Isomectric and Oblique Orthographic 1. Structures Types of Structures Natural and Manmade structures Structures are all around us, some are natural like eggshells, spider-webs, caves and trees and others are man-made like bridges, towers, houses, shopping bags and cups. Structures are further divided into three other groups namely frame, shell and mass structures: Frame Structures A frame structure is a structure made up of many rigid parts joined together to form a framework'. These different parts are called members. Shell Structures A shell structure is more enclosing than a frame structure - it surrounds and encloses something.
Tensile strength: ability of a material to withstand pulling or tension forces Compressive strength: ability of materials to withstand pushing or compressive forces Torsional strength: ability of material to withstand being twisted or placed under torsion Stiffness: how little distortion or deflection occurs when a material is placed under pressure
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