Lab 3 - microstation PDF

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Introduction to MicroStation – Lab 3 Objectives After this lab, you should be able to: 3.1 Create and place cells, 3.2 Call Reference File, 3.3 Prepare plotting

Cells A cell is an element or group of elements combined into one and stored in a cell library which can be shared to use in design files. User can recall any cell to place or manipulate. The use of cells can reduce repetitive drawing and encourage standardization.

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Place Active Cell Place Active Cell Matrix: place a matrix (rows and columns) of the active cell. Select and Place Cell: Identify a cell and place an additional instance(s). Define Cell Origin Identify Cell: display the name and level of a cell that is in the dgn file. Place Active Line Terminator: Add a terminator to a line segment. Replace Cells.

Procedures for Cell production - Create a new design file in your desired directory. Remember to set the working unit. - Open the Cell Library dialog box from the Element  Cell pull-down menu. Create a new cell library in your desired directory. Name the cell library as MYCELL.cel (File  New  find your destination  mycell.cel). - Draw the geometry of the cell, e.g. North symbol (diameter = 1m).

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. Select or fence the geometry of the cell. Define the cell origin by using the “Define Cell Origin” tool in the Cells palette. The cell origin is the insertion point of the cell (Cells  Define Cell Origin). After you have completed the above procedures, the [Create] button in the Cell Library dialog box will be activated. Click the [Create] button. In the Create New Cell dialog box, name the cell as North, describe it as North Symbol and click the [Create] button.

Exercise 3.1 There are several standard symbols in land surveying, surveyor measures these features in field and plot them in a plan with the corresponding symbols. This exercise requests the user to MicroStation V8i (Lab 3)

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prepare a cell library known as “ls.cel” for storing the cells of the following symbols. Create a new design file “cells.dgn” and save into the specific directory. Create the graphic elements for different cells. Cell Name STN

Symbol

Description Control Station

BS

Boundary

TRI

Trigonometrical Station

MO

Monument

N

North

WL

Well

TE

Tree

Other than those, please also prepare some cells as described in 1:200 and 1:500 scale Engineering Survey Specifications for the land surveying purpose. Cell Placement - In order to retrieve previous cell library, user can choose File  Attach in the cell library dialog box from Main Menu  Element  Cell option. - There are four different ways for user to use the cells in the library. Placement Point Terminator Pattern

Used in the Place Active Cell tool of the Cell palette Used in the Place Active Point of the Points palette Used in the Place Terminator tool of the Cell palette, e.g. place the cell at the end of a line Used in the Patterning tool of the Patterning palette

Exercise 3.2 Placing Cells Create a new design file “lab3a.dgn”. Use “XYZ text” to load data file “3a.txt” to design file (not all cells are existed). The format of txt is “cell, x, y, z”. Locate the point with cell “STN” and amend the placed cells to “MO” (Replace cells: Replace, Single, Use Active Cell). Exercise 3.3 Apply patterning technique for cell placement Open the design file which have been prepared previously, save the name as househatch.dgn and modify the building as follows. (Hints: before adding patterns to the building, user have to make sure that the wall and the roof are solid closed polygons and the window is a hole. If not, user should modify them using create complex shapes tool and the element information dialog.) MicroStation V8i (Lab 3)

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Attach the cell library "archpa.cel" from the teaching material directory. Select WOOD1 from the cell list and click the [Pattern] button. Use the Pattern Area tool to add pattern on the roof. (Make sure to turn on the Associative patterns button so that whenever the element is modified or manipulated, the pattern is automatically updated.) Select RANRBL from the cell list and click the [Pattern] button. Set the scale of the patterning to 0.5. Pattern the wall. (User may notice all areas including the window are patterned. One way to exclude areas inside a patterned area from patterning is using Group Holes tool. This tool used to identify a solid element and the hole elements to be associated with the solid.) Attach newly designed cell library. Select the North symbol from the cell list and click [Placement]. Place the North symbol.

Exercise 3.4 Create three graphic cells in a new cell library called “Drawing.cel” (lab 3). They are called “border”, “TBlk’ and “North” customized for scale 1:1000. The detail is shown on the Figures 1 and 2. - Border - cell for the frame of the drawing area (dl=960,950) - TBlk - Title block cell (dl=100,950) (lab 3 result)

Figure 1 – The dimensions of “border” and “TBlk” cells for scale 1:1000 (Paper size A0) MicroStation V8i (Lab 3)

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Figure 2 part (line, parallel move  upper, insert text, align edges)

Figure 2 – The detail of the title box. Place the 3 cells in cells.dgn.

Reference File It is a design file which can be attached or associated with the active design files, even itself. It can be used for reference or construction purposes, and can be plotted along with the active design file. User can share/copy data from master drawing and this operation will not have any changing of master drawing. This operation can facilitate the efficiency in a CAD team or surveying team.

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Steps for attaching reference file - Open the reference files setting box from File  Reference. Choose Display  Design to select design files as reference file. Choose Tools  Attach to attach “*.dgn”. - Setting of Reference file operation Logical Name: needed when the selected reference is already attached. - Attachment Mode Coincident: specifies that the reference file will have the same coordinates as the active design file. Saved View: specifies that one of the reference file saved views will be displayed. - In the reference files setting box, turn on "Snap" and "Locate" (left bottom icon). Snap: allow tentative point snap to reference files. Locate: allow using the Copy Element tool to copy parts of the reference file to the active design file. Exercise 3.5 A surveyor make a serious data shifting of a design file “3b.dgn”, user are required to use “reference file” & modify element techniques to amend this drawing so that data in design file 3b.dgn (reference) can match up with data in master design file “3c.dgn” (open) (move, rotate 3 points by points).

Plotting -

Use the Place Fence Block tool to place a fence around the graphic which to be plotted.

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Open the Printing setting box from File > Print menu or icon. Change the printing device if necessary. Select the plotting unit to “M”, the required scale, print layout, Paper size in printing menu.

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Select

to print the drawing.

Submission： Cell library: ls.cel, Drawing.cel Design file: cells.dgn, lab3a.dgn, househatch.dgn, 3c.dgn

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