Organized as hierarchy, This arrangement accommodates expansion and addition of user-defined extensions to the layer list. Layer names are alphanumeric and use abbreviations that are easy to remember. Click on the link below:The AIA CAD Layer Format in PDF … [Read more...] about The AIA CAD Layer Format
Standard Paper Sizes
Metric ISO, Imperial ANSI and USA Architectural are the worlds top standards for paper sizes. Of these metric is number one! Metric ISO Sheets An A0 sheet is 1m². This allows paper weights to be expressed in grams per square meter. Example: 110gsm paper. The ratio - length to width - of ISO sheets is 1 to the Square Root 2. A square root is a number that when … [Read more...] about Standard Paper Sizes
Scales (Metric)
By SteveThe scales recommended for use with the metric system are:Actual Size:1:1Reduction:1:21:2.51:51:10Enlargement:2:15:110:1Decimal multiples of these base scales are also used. eg. 1:100, 1:250, 20:1Indication of ScaleThe scale should normally be noted in the title block of a drawing. When more than one scale is used they should be shown close to the views to which they … [Read more...] about Scales (Metric)
SI Units and Symbols
SI Base UnitsQuantity Name SymbolNameSymbollengthmetermmasskilogramkgtimesecondselectric currentampereAthermodynamic temperature*kelvinKluminous intensitycandelacdamount of substancemolemol … [Read more...] about SI Units and Symbols
Pen Sizes and Line Types (Metric)
By Steve Colors on the old drafting pens The ISO defines a set of standard metric line widths for drafting. Like the ISO A and B series sheet sizes, the pen sizes increase by a factor of 2. This allows additions and corrections to be made on the enlargements or reductions of drawings. Each width is assigned a color code. The color code corresponds to that for the matching … [Read more...] about Pen Sizes and Line Types (Metric)
Paper Sizes
By DGM The ISO 'A' Series The ISO 'A' series of sheet sizes is based on a constant width to length ratio of 1 : √2. The A0 size is defined as having an area of one square meter. This allows paper weights to be expressed in grams per square meter. Each smaller sheet size is exactly half the area of the previous size. ie. If you cut an A0 sheet in half you get two A1 … [Read more...] about Paper Sizes