Dimensioning Concepts

In Bricscad there are five dimension types: linear, angular, radial, diametric and ordinate.

Dimensions are created by either selecting an entity or by  identifying the origin points of the extension lines.

1. Stacked baseline dimension

2. Radial dimension

3. Angular dimension

4. Aligned linear dimension

5. Ordinate dimension

6. Center mark

7. Vertical linear dimension

8. Diametric dimension

9. Rotated linear dimension

10. Leader with text

11. Horizontal linear dimension

12. Arc length dimension

Dimension Style

Dimensions are created on the current layer, using the current dimension style, which controls the appearance of the dimension block. A dimension style is a collection of settings and definitions which determine the type of arrowheads, text style, color of text, lines and arrowheads, unit type, precision, etc. You can modify a dimension by editing one of the dimension settings or you can modify the dimension style to apply the changes to all dimension entities that are created with this style. A drawing contains at least one dimension style.

Dimension Block

A dimension entity is created as block, which consists of the dimension line, arrow heads, extension lines and the dimension text.

1. Dimension text prefix (d=)

2. Dimension text (258)

3. Dimension tolerance (±1)

4. Dimension text suffix (cm)

5. First arrowhead block

6. Second arrowhead block

7. Dimension line

8. First extension line

9. Second extension line

10. Extension line extend

11. Extension line offset

12. Arrowhead size

13. Vertical text offset (the vertical position of the dimension text is controlled through three settings variables: DIMGAP, DIMTAD and DIMTVP)