Issuu on Google+

Knowledge map – week 1 Force: is any influence that produces a change in the shape or movement of a body is defined by direction(force), sense(how strong the force is) and magnitude (size). Magnitude direction

+5 plus -3= +2 +4 plus +3 =+7


Tension force: when a external loads pulls on a structural member, the particles composing the material move apart and undergo tension. eg. Stretch and elongate the material. How much changes? - depends on the stiffness of the material -cross sectional area - the magnitude (size) of the load Pulls out= tension

compression: when an external load pushes on a structural member, the particles of the material compact together. is a characteristic of mass construction. (because the magnitude of the load effects the shape of the member.)

Changes? -same as tension. - result in the shortening of the material. Push in = compression

Pic from weekly guide, e-learing

Scale: uses for: to represent larger (smaller) elements in smaller(larger) format and for practical reasons. eg. 100:1 or 1:100 mystery material:

Pic from own photo taking

MDF: medium density fiberboard

Material: Carefully chosen according to the use of the building. -strength (strongVSweak) steal is timber . Steal is good for compression and tension -stiffness (flexible, stretchy or floppy?) e. concrete robbers

1. seal with glue 2. hold pressure 3. can not be cut by ourselves 4.commonly use for desk 5. hide under plastic 6. more stronger and dense than particle board

-shape(mono- dimensional linear\bi-dimensional planar or in dimensional (columetric) -material behaviors -suitability price? Availability? How far does the material need to transport

knowledge map – week 2 structural system & forces: 1.solid system: • e.g early building, egypt and great wall • material: stone & brick • compression

2.skeletal system • popular nowadays • efficient way to transfer loads down construction system: things need to take in consideration before building: • performance requirement: comfortable? Protections?

• •

Aesthetic quality: colors? Natural factors

economic efficiency: margins, affordable. Initial cost: cost for material and the benefits • environment effect: climates and material sources, fire system set up, social requirement mystery material: fibres • always use in wet area, absorb moistures • strong, concrete inside • dust realizes once broken Joints

Fixed joints: strong Not movealble

Roller joints: once there is force, the roller will move to spread out the foce

Pin joints Compare to fixed joint, pin joints are more flexible and affordable

** life loads: earth quick, natural loads etc.. ** dynamic load: cars, track etc,,

Knowledge map for week 1 2