Friday, 8 October 2010

Scaled Diagram

Insert picture









Some text


This is another way of presenting scaled drawings. It dramatically illustrates the size of wind turbines

Monday, 4 October 2010

Brett 2nd Edition



Image from: Brett 2nd Edition Page 85

Saturday, 2 October 2010

Ching Graphics


Image from: Ching (2003)
Architectural Graphics pg 24
This sketch of a small building
is a Multi-View Drawing because
it shows the Front Elevation,
Side Elevation and Roof Plan

It is an Orthographic Projection because these images are arranged in straight lines
















SceneCraft

Model train shops provide detailed buildings, but they
are weird scales like 1:76 or 4mm to 1ft. This is due to
the gauge of track, but that doesn't really help brickwork students...

Anyway, here's some examples of different buildings


Out House No 42-046     Image from: Railway Model Shop
Tradition method of construction with load-bearing brick wall and slate roof. Notice the door thresholds and soldier bricks above the windows. There is also a barge-board and fascia


Under Construction No 44-024     Image from: Railway Model Shop
Model of bungalow, showing internal blockwork, external brickwork, insulation, roof trusses and scaffolding


Modern Industrial Unit No 44-049     Image from: Railway Model Shop
Example of modern construction method, with Portal frame roof. This is a steel structure with the brickwork acting as a non-loading skin around the building


Site Office No 44-055     Image from: Railway Model Shop
Example of porta-cabin used on site

Friday, 1 October 2010

Escher




some text

lego

Thursday, 30 September 2010

BBC version 2

Technical Drawings give detailed information about Structure, Dimensions, Materials and Assembly

The main ones are Perspectives, Isometric Projections and Planometric Projections

Working Drawings also include Orthographic Projections and Sections

Projections are three-dimensional shapes on a 2D surface


Hands by MC Escher    Image from: Google Search
MC Escher is a very famous graphic artist, known
for his mathematical illusions. His drawings have
inspired many other artists




In an Isometric Projection all vertical lines on an object remain vertical while horizontal lines are drawn at 30°


Image from: BBC Bitesize
Isometric projection distorts shapes slightly in order to keep all upright lines vertical (and because perspective is ignored)

Their advantage is that they show the object's dimensions accurately, making it easier to draw them, to scale from the Plan View


Planometric projections (like isometric drawings) show all dimensions accurately and to scale, and are frequently used to show buildings or room layouts


Image from: BBC Bitesize
Because they are drawn with 45° angles, there is no distortion, so that a circular object can be shown as a true circle


In Perspective Drawings the forward face or edge
of the object is drawn first, with the other lines receding away from the viewer, just as they appear when you look
at a real object


Image from: BBC Bitesize
If the receding lines are extended they will meet
together at the Vanishing Points


One Point Perspective    Image from: Andrew Diec
Perspective drawings can use one, two or three
vanishing points


Two Point Perspective    Image from: Andrew Diec
Two-point perspective has many applications
for developing ideas in 3D


Vertical Two Point Perspective    Image from: Andrew Diec
Three-point perspective is sometimes used
for internal views


Three Point Perspective    Image from: Andrew Diec
More often, Three-point perspective is used
for drawings of tall buildings


Image from: Harvest School
The advantage of perspective drawing is that it makes objects appear more realistic, as objects appear to get smaller as their distance from the observer increases


Image from: Google Search
Escher used three-point perspective
in the following drawing


Relativity by MC Escher     Image from: Google Search
This inspired the following model


Image from: Lego
Drawings which contain all the information needed to make an object, including dimensions and details of components, materials and assembly instructions, are called Working Drawings

Although these may be done in Isometric or Planometric projection, the normal drawing technique is orthographic projection

Some objects may need a Section Drawing to give extra structural information, or an Assembly Drawing to show how the parts fit together



















Ulster Uni

BBC Bitesize

Technical Drawings give detailed information about Structure, Dimensions, Materials and Assembly

The main ones are Isometric Projections, Planometric Projections and Perspectives

Projections are three-dimensional shapes on a 2D surface, like a sheet of paper. They give the illusion of depth

For working drawings, there are also Orthographic Projections, Sections and Assembly Details

In an Isometric Projection all vertical lines on an object remain vertical while horizontal lines are drawn at 30°

Image from: BBC Bitesize
Isometric projection distorts shapes slightly in order to keep all upright lines vertical (and because perspective is ignored)

Their advantage is that they show the object's dimensions accurately and in the correct proportions, making it easy to draw them from the Plan View and to scale
In Planometric Projections, also called Axonometric projections all vertical lines on an object remain vertical, while horizontal lines are drawn at 45°


Image from: BBC Bitesize
Isometric projection distorts shapes slightly in order to keep all upright lines vertical (and because perspective is ignored)

Their advantage is that they show the object's dimensions accurately and in the correct proportions, making it easy to draw them from the Plan View and to scale







Planometric projections (like isometric drawings) show all dimensions accurately and to scale, and are frequently used to show buildings or room layouts

Because they are drawn with 45° angles, there is no distortion, so that a circular object - say, a stool on the floor - can be shown as a true circle.






Photo taken 20th May '10













































Images and text from

BBC Bitesize