Project - A project on design of road from a given topographic data

• Point styles and importance of points.

ANS: Points are very basic and important requirement for any Highway Design. They shall be obtained from the survey data. Number of points and interval between two points plays an important role in the accuracy of the data. Based on this points the next step i.e Surface Creation (formation of Plane or Triangulation) shall be done. Point style can be created for each and every point. It denotes the Markers Size, Type etc..

Point Creation can be done with the following steps. 1. Click on Points TAB. Click on Import/Export Points and then Import points from the Popup window. Select file by clicking "+" on top right corner. Select the disignated file and click on Open. Then specify the point file format. Then mark on the "Add points to the point group" and then click OK.

• Surface creation and its style settings

ANS: Surface is created by joining the nearest points with each other and form a plane. Click on Surface Tab and then click on create surface. Name the surface and other details in the popup window and click on OK. Expand the Surface in prospector and then expand the name of the surface. Then expand defination and right click on drawing objects. Then Click on new and answer the popup window and click on OK. Select the points for creation of surface and click ENTER. For style settings, click on Settings tab in Tool space. Then expand surface and surface styles. Right click on standared. The styles can be modified by the popup window opned.

Break Lines are the intermediate 3D Poly lines drawn to reduce the error during surface creation where the distance between points from survey data is high

• Vertical profile design.

ANS: Click on Profile from Surface on Profile Tab. Then name the profile and provide offset ditances and click add. Then draw the vertical profile (FRL) from the profile layout tools.

• Horizontal alignment design and adding super elevation.

ANS: By XREF command download the plan obtained from Survey data and overlay it on the surface. Then Horizontal alignment shall be drawn with Tangents, Transition and Curves. Click on Alignments Tab and than click on create alignment by layout. Enter the details in the popup window and than click on ok. With the Alignment layout tools Tangents, Transition and Curves shall be drawn. As it is a urban section speed limit of 40KMPH is applicable.

For Obtaining Super Elevation, click on Alignment. Then Click on Calculate/edit superelevation.

• Cross section template creation based on proposed conditions.

ANS: Click on Create Assembly in Corridor Tab. Paste the point at the desired location. By clicking Tool Pellete option we can create a cross section elements like Kerb, Carriageway, Shoulder, Drain etc.. from the templets given.

• Corridor modelling and extraction of finished surfaces.

ANS: Click on Create Corridor in Corridor Tab. Select/Type Name, Alignment, Profile, Assembly and Target Surface, then select OK. Then create sample lines from the section tab.

• Earthwork quantities and material quantities takeoff.

ANS: