Sketches - Part A & B Modules Flashcards
Orthographic Projection
A method of representing a 3 dimensional object on a print in a way that shows all important sides
What are the 6 different views of Orthographic Projection
Front, right side, left side, top (plan), bottom & rear
What is the standard text for a drawing?
upper case gothic
What are the 8 different lines on drawings?
Visible or object line, centre line, hidden line, extension line, dimension line, leader line, cutting (viewing) plane & phantom line
Object Line
A thick dark line, structural outline and the most common
Center Line
Dotted line with one longer line and then a short one. Shows the centre of the object
Hidden Line
a regular dotted line. shows a part of the object that is hidden from that particular view
Dimension Line
a thin line with an arrow on each end. Used to place the dimensions
Extension Line
a short line that shows the start and end point for the dimension lines.
Leader Line
a thin line that ends with an arrow. Leads you from information or a dimension to a particular area
Cutting Plane
thick, dark lines either broken or continuous with arrows are right angles at each end. It shows where a sectional view was taken from
Phantom Line
A thin broken line with a long dash followed by two short dashes. It shows a mating part, assembly or movement of an object
Third Angle Views in order
Front view, top view placed above it, the right put on the right, left on the left, bottom on the bottom and rear is placed on the far left
First Angle views in order
Front view, top view put on the bottom, right on the left, left on the right, bottom on the top and rear on the far left
What are the 3 types pictorial views?
Perspective, Oblique & Isometric
Perspective view
Most common in architecture or construction and uses a vanishing point
Oblique view
uses a distortion method thats hard to read
Isometric view
Most common and uses good, easy to read pictures
Describe how to read Third Angle Views
When you look at the view from the front you place that drawing on the paper first, then you look at the object from the top and you put what you see on the top of the frontal view drawing. Then you look at the drawing from the right side and put what you see to the right of the frontal view
Describe how to read First Angle Views
When you look at the front of the view you draw to out as you see it. When you look at the view from the top you draw what you see as if you were looking right through the object and so you draw it under the frontal view. Same for the right view, you draw it as if you were looking right through the object and so you draw it on the left side of the frontal view
What are 4 most common material sectional views for metals?
Steel, Cast Iron, Aluminum & Brass/Copper
What does the material sectional view for steel look like?
2 lines cross together and then a space and the 2 lines close together again
What does the material sectional view for Aluminum look like?
Lines spaced out crosses on each line going in the opposite direction
