Project 2 - Lane National Highway Roadway Design in Civil 3D

Develope the road geometric design for 2lane NH concrete road with paved shoulder for 80kmph design speed from the provided data.

1.Creation of surface

Method-1 By using surface XML data

Go to insert>click on land xml>go to surface xml saved location> select surface xml>click on open>click ok

Method-2 By using contour data

Click on file>click on open>go to saved contour data saved location>select SL contour data>click on open>contour data appears on screen

To create surface

Select contour data on single left click> type ctrl c in command bar> drawing 1>go to edit> select paste to original co-ordinates

In toolspace bar, select surface(right click)>create surface>edit the surface name(surface eg)> click on ok

Surface>surface eg>definition>select contours(right click)>add>click on ok

Select all contours>enter

Type LAYOFF in command bar and click on major & minor contours>Esc

Surface is created.

2.Alignment & profile design.

Go to alignment>create alignment by layout

In create alignment tool box

Give the name,type in general click on ok

Alignment layout tool box will come

To create alignment first set geographical co-ordinate system

Go to settings>click on saved project name(right click)>edit drawing settings(select co-ordinate system code)>apply>ok

Go to geolocation>map>select map aerial

Method-1

In alignment layout tools, select tangent-tangent(no curves)>draw alignment>select free curve fillet(b/w two entities,radius)

curve is inserted b/w two tangents

Method-2

Go to alignment>create alignment layout

Give the name,type then click on ok

In alignment layout tool,select fixed line(two points)>draw two tangents

select free spiral-curve-spiral(b/w two entities)>draw spiral-curve-spiral b/w two tangents

Alignment is created.

Creating profile view

Go to profile>create profile from surface>click on saved surface name>click on add>draw in profile view

Give the profile view name,profile view style,station range,profile view height,data bands

then click on create profile view.

Creating profile

Go to profile>create profile by layout

create profile-draw new toolbox will appear

give name,profile label set,profile style as per requirement >click on ok

In profile layout toolbar

Select fixed tangent(two points)

Insert PVI

Select PVI click on profile>Esc, select free vertical curve(parabola)

select first entity & second entity as well as specify curve length.

3.Creation of assembly & subassembly

Creation of assembly

Assembly is nothimg but typical cross section

Go to corridor>select create assembly

give the assembly name then put on screen with rectangle for our reference

Creation of subassembly

Select assembly>click on tool palette>lanes>lanes from redmedian1>click on assembly(on circular point)

Click on assembly>subassembly properties>select parameters

Lane width=3.5m

cross slope=-2.5%

pave 1 depth=0.280m

pave 2 depth=0.150m

base depth=0.2m

sub base depth=0.5m, click on apply>ok

Next, is create earthen shoulder or embankment slope

Click on subassembly>tool palette>shoulder

to edit earthen shoulder,click on subassembly>subassembly properties

lane width-1m

shoulder slope=-3%

day light slope=2:1

sub base slope=-3%

subassembly is created as per our requirement

4.corridor development & Section line or sample line

Click on corridor>create corridor

give corridor name, alignment,profile,assembly and target surface, then click on apply>ok>rebuild corridor

In toolsapce>prospectus>go to corridor(right click)>properties

In information>select object style as edits

surfaces>add surfaces top

add bottom surface and datum

add breaklines>check both

overhang>toplinks & bottomlinks, then click on apply>ok

Creation of sample lines or section lines

Click on section>create sample lines

select alignment>ok

give the sample line name

then select by range of stations

left swath width=25m

right swath width=25m

Set sampling increments as per client requirement(for chainage intervals)

set at range starts:true

at range end:true

at horizontal geometry points:false

at superelevation critical stations:false then click on ok

right click on screen.

sample lines will be created

5.Creation of detailed cross section views & generating quantity report

To create cross section

Click on section>create multiple section views

In general

select alignment

select sample line group name

section view name

secvtion view style

In section placement-select draft

offset range-automatic

elevation range-automatic

section display option-

in cut-hatcting ansi 31 size2

in fill-hatching ansi 38

Data bands-design & existing levels with offsets

set band properties

surface1	surface2
1.corridor top	corridor top
4.corridor top	corridor top

section view table

type:-material,click add>ok

click on create section view. cross section is created.

Cross section views

Cross section @ 0 chainage

Cross section @ 260 chainage

Quantiy report

To calculate quantity

Click on section>compute materials

select alignment name

select sample line group name>ok

compute material toolbox will appear

quantity takeoff criteria=standard

EG=surface1

datum=bottom surface

Again,

click on section>compute materials

edit material list>apply>ok

click on section>generate volume report

in report quantities

select alignment

select sample line group

select material list

select a style sheet:-earthwortk>ok