mx road application
TRANSCRIPT
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MX ROADAPPLICATION
DR. DEPRIZON SYAMSUNUR
LINTON UNIVERSITY COLLEGE
UNIVERSITY OF EAST LONDON
JULY 2011
BASIC CONCEPTS
3-D surface stored as models in MX database
Each model has a model name
1. 28 characters maximum
In range 0 9 , A to Z and space only
2. Unique in database
One model per surface, such as
1.Existing ground (the survey)2.Design
3.Contour through the survey or design
4.Long and cross sections
No practical limit on number of models
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BASIC CONCEPTSSURFACE FEATURES - STRINGS
Surface features and break lines stored as strings.
1.Each string has string name which is
2.4 characters long alphanumeric
User defined in both the survey and in the design
For example, in the diagram below, the string CE2i is the right hand verge.
Master alignments must have an initial character M
BASIC CONCEPTSCOORDINATES AND UNITS
Cartesian coordinate system
1. X (Easting)
2. N (Northing)
3. Z ( Level, -999.0 = null level)
Metres or feet
Angular measurement
1. DMS Degr Grad Radian Quadrant Zero datum is grid North
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GETTING STARTED
GETTING STARTEDCREATE A NEW PROJECT
This provides the name of the
file used to store the projects,
format of the file is . Mmd
Directory used tostore the project
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SURVEY INPUTDISPLAYING THE MODEL
HIDE GRAPHIC is used to make parts of the display invisibleDELETE GRAPHIC is removed items from display. Deleting items from the display does NOT affect
the model file.
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HIDE GRAPHICs
HIDE by ELEMENT
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SHOW GRAPHIC
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SHOW GRAPHIC
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HIDE by GROUP
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