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CAD Standards
Layers and Pen/Line Weights


Page Index:
Layer Standard
Color-Pen Weight Standard
Pen Table


DeLapp & Associates layer standard follows AIA short format.

Layer Standard

LayerName Color Linetype Description Location
aarid white continuous Arch area room ID - names & numbers  
aclgr 254 continuous ceiling grid Ceiling
ecc red continuous CCTV  
eco red continuous Communications  
ecr 8 continuous Circuiting tics  
ecs cyan continuous Conduit Systems  
ecsug cyan dashed2 Conduit Systems Underground
ect red continuous Control Systems  
eda red continuous Data systems  
eeq 30 continuous Equipment & Panels  
efi red continuous Fire Alarm  
eficl red continuous Fire Alarm Ceiling
efiwa red continuous Fire Alarm Wall
eli 150 continuous Lighting  
elicl 150 continuous Lighting Ceiling
elipa 8 continuous EM lighting fixt hatch pattern  
elisw red continuous Light Switches Wall
eliwa 150 continuous Lighting Wall
eno white continuous Notes  
epo 30 continuous Power  
eporo 30 sdash2 Power Roof
eso blue continuous Sound or PA  
esocl blue continuous Sound or PA Ceiling
esofl blue continuous Sound or PA Floor
esowa blue continuous Sound or PA Wall
esr blue continuous Security  
etv blue continuous Television  
mhveq 9 continuous Mech HVAC equipment  
mhveqro 9 sdash2 Mech HVAC equipment Roof
ede1 yellow continuous detail-very light  
ede1-dash yellow hidden2 detail-very light-dashed  
ede2 9 continuous detail-med light  
ede2-dash 9 hidden2 detail-med light-dashed  
ede3 white continuous detail-light  
ede3-dash white hidden2 detail-light-dashed  
ede4 red continuous detail-medium  
ede4-dash red hidden2 detail-medium-dashed  
ede5 150 continuous detail-heavy  
ede5-dash 150 hidden2 detail-heavy-dashed  


"Pens" really do not exist for raster plotters. But like many companies, we use the pen concept to standardize the line weights.
 

Color - Line Weight

Appearance (assuming white background) Color # Color Pen Assigned Line Weight Screen Full inches Half Inches Printer Inches Comment
dark 1 Red 4 Medium 100% 0.020 0.010 0.006  
light 2 Yellow 1 Very Light 100% 0.008 0.004 0.002  
medium 3 Green 4 Medium 100% 0.020 0.010 0.006  
medium 4 Cyan 5 Heavy 100% 0.028 0.014 0.008  
dark 5 Blue 4 Medium 100% 0.020 0.010 0.006  
medium 6 Magenta 3 Light 100% 0.013 0.006 0.004  
dark 7 White (black) 3 Light 100% 0.013 0.006 0.004  
light 8 8 (grey) 1 Very Light 100% 0.008 0.004 0.002  
light 9 9 (lt grey) 6 Medium Light 40% 0.010 0.005 0.003 Color for Background
dark 30 30 (Orange) 4 Medium 100% 0.020 0.010 0.006  
dark 40 40 (Dark Yellow) 4 Medium 100% 0.020 0.010 0.006  
dark 150 150 (Med. Blue) 5 Heavy 100% 0.028 0.014 0.008  
light 254 254(lt grey) 7 Very Light 40% 0.008 0.004 0.002 Ceiling grid
    All other colors 2 Medium Light 100% 0.010 0.005 0.003  


This shows the standard "pens" that we use. This is based on standard technical pens with 0.25, 0.35, 0.50 and 0.70 mm line widths. Half size plots use line widths that are 1/2 the width of full size plots. Printer plots use line widths 30% of the line width for full size plots.
 

Pen Table

Pen# Weight Screen Full Size (mm) Full Size (inches) Half Size (inches) Print (.3x) (inches) Ratio to lighter pen
1 Very Light 100% 0.20 0.008 0.004 0.002 n/a
2 Medium Light 100% 0.25 0.010 0.005 0.003 1.25
3 Light 100% 0.32 0.013 0.006 0.004 1.28
4 Medium 100% 0.50 0.020 0.010 0.006 1.5625
5 Heavy 100% 0.70 0.028 0.014 0.008 1.4
6 Medium Light 40% 0.25 0.010 0.005 0.003 n/a
7 Very Light 40% 0.20 0.008 0.004 0.002 n/a

DeLapp & Associates, Inc. dba
DeLapp Engineering
Main Office in Santa Fe:
1190 Harrison Rd Suite 3a
Santa Fe NM 87507
(505) 983-5557, Email Addresses Email Addresses (505) 982-5724 Fax

Map to DeLapp Engineering Office in Santa Fe

This entire web site is copyright (c) 1999-2012 by DeLapp & Associates, Inc.

DeLapp Engineering is a registered trademark of DeLapp & Associates, Inc.