Graphical Detailing Assignment 1 in Civil Engineering Btec Level 3

Graphical detail

Assignment 1

P1

The list of equipment used within graphical detailing is quite long, from many different types of paper used to different pencils. Equipment used depends on the drawing being produced, for example; if someone was producing a preliminary drawing then they would use “detail paper”. This paper is thin compared to cartridge paper however it has a smoother surface. The most common paper used for drawings are produced on cartridge paper due to it being the cheapest option.

Equipment used within graphical detailing to contribute to producing drawings;

·         Set Squares- Set Squares are used to draw accurate angles. The most common set squares are 45 degrees and 60/30 degrees. When using set squares, they should always be used along with a T-Square. The Set-square rest on the straight edge of the T-Square and this ensures that the angle is drawn straight and with accuracy.

·         Compass- A compass (or pair of compasses) is a technical drawing instrument that can be used for drawing circles or arcs.

·         A Mechanical pencil- (sometimes known as a clutch pencil or refillable pencil) are used in drawings such as Orthogonal or Isometric drawings as they provide a very constant line thickness.

·         Ellipse Template- An Ellipse template is used for drawing ellipse or oval shapes accurately. Diagram 9 shows 30/60 ellipse template. It is particularly useful for drawing ellipses on isometric drawings.

·         Ruler-  A ruler is one of the most important pieces of drawing equipment. An opaque-type ruler should only be used to measure distances with lines being drawn with T-Squares and Set Squares.

When producing a drawing, the size needs to be taken into consideration. From A0 to A4, each size has a purpose which they are usually produced for. For example;

·         A0 drawings- These would be useless to site based work as they are to large

·         A1 drawings- These are considered a standard size to be stored or left on drawing hangers

·         A2 drawings- Same as A1 drawings however on a smaller scale

·         A3 drawings- Able to be bounded into books (practical site drawings)

·         A4 drawings- Identified as the perfect size for binding into books (service drawings for example)

When drawings are produced they can be grouped into separate sections. By grouping drawings, it makes them easier to locate and prevents confusion or loss of drawings. For example, on construction site, drawings can be grouped into several sections;

·         Construction (these drawings have been issued for construction and are the latest version to use on site)

·         Superseded (these drawings have been updated meaning they are no longer up to date, these drawings should not be used for construction once a new version has been issued)