Wednesday, July 13, 2011

BIM SHARING PORTAL FOR ARCHITECTURE COMMUNITY

"This is a BIM sharing portal specially created for the Singapore Architecture Community. It aims to serve as a platform for BIM user group to stay connected and be familiar with the Architecture BIM e-Submission and some good industry practices." to find out more...
Passage via https://sites.google.com/site/lkbimsite/

Monday, April 25, 2011

Useful Videos via YouTube

Project Vasari: creating a basic pattern base panel curtain wall
http://www.youtube.com/watch?v=mziQg-MSuS0&feature=related
Simple useful material scheduling:-
http://www.youtube.com/watch?v=eMHnegAycKw

Wednesday, October 20, 2010

BIG BIM little bim

Thursday, September 23, 2010

From CAD to BIM: The Experience of Architectural Education with Building Information Modeling

"In the spring of 2006, Montana State University began to include a Building Information Modeling (BIM) program in its digital graphics and design curriculum. Since then, an increasing number of students have had the experience of designing with BIM programs and comparing their processes and final products with other students who are using traditional Computer Aided Design (CAD) programs. While 2-dimensional CAD and 3-dimensional BIM models may simply be tools to accomplish the same end, they provide two radically different approaches to learning architectural design. This paper discusses the implications of BIM with respect to the student experience." to find out more...
Passage via http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=ASCECP000328041002000008000001&idtype=cvips&gifs=yes&ref=no

Friday, February 26, 2010

Autodesk Level II Advance training

I attended a two days' training at Innocom and will get my certificates in two weeks' time.
It is very useful and definately a recommended course for anyone who have intensions to learn Revit Architecture.
Anyway, for the issues tackled within the two days for your perusal:-
Day 1
Importing and Exporting Files:-
1.How to import an autocad file?
Insert>Import> check current view

2.How to turn on Snap?
Manage>Setting>Snap

3.How to bring autocad drawings to foreground?
select autocad drwg> Change the icon to Foreground

4.The project browser do not have 3d view, how do we activate it?
View>Default 3d

5.Short cuts for Visibility/Graphics Overrides:-
VG / VP is often used.
VG: hiding elements

6.How to check unit system in a file?
Manage>Project Units>Length>change to intended unit system

Linking Files:-
7.How to create a blank View/drafting view to import details to scale?
View>Drafting View>Set Scale>Import Detail> Explode the drawings to modify\

8.How to export autocad?
Project Browser>Duplicate with detailing>Rename the drawing

9.How to hide all furnitures?
VG>Hide Furnitures>

10.How to hide patterns at floor plans?
VG>Floor>Patterns override>select white color> apply to remove grains/patterns

11.How to avoid exporting floor patterns?
VG>Uncheck visibility in Patterns override
Note: However the layer can be turned off after exporting

12.How to hide all annotation?
VG>Annotation Gategories>uncheck [Show annotation categories in this view]

13.How to link revit?
Insert>Link Revit
Notes:-
If you modify the link file concurrently, the link file need to be unloaded first,
then reload the link file with your updated file.
Normally revit are linked and Cad are imported as to bind the CAD file

14.How to off the annotations in the link file?
VG>revit link>display setting>change [By host view}] to [custom] > go to annotation > set custom >uncheck items

15.How to copy the parts of the model into the file?
Collaborate>Copy/Monitor>Select link file>Options> Walls> select walls to be copied> check multiple copy to copy all.

16.How to reuse existing revit files to create new design?
Collaborate>copy/Monitor>Option>change the wall type to be replaced>select walls to replace > delete link to monitor new design
Note:
Coordination review is to view what is the changes with new copied items
Monitor is to change the copied items through collaboration.

Conceptual Design:-
17.How to create a mass?
massing&Site>in place mass> name mass create mass through drawing
Note:-
Double click lines to enter specific figures.

18.How do you create an In-Place family using mass?
Component>Model-In-Place>define parameters (roof/floors/wall/etc)>sketch the path>sketch the profile>finish sweep/finish model
Note:-
An in place mass is used to create irregular items in Revit. Defination of the item will incorporate properties of the item.

Creating Advanced Components:-
20 How to change Tags?
Select Tag>edit tag family>duplicate and save with different names> add items into tag and change the graphic parameters of the tag
>save and load into project

21. How to add tags with door?
Annotate>Tag>Tag All> select the relevant information containing in a Tag
Note:- to update the tags, select all tags and change the properties through [Element] at top right hand corner

22. How to change door and window family?
Doors and window families comes with instant parameters, walls incorporated in door/window familiy represents all wall type despite its'thickness.
Door jamb, door thickness, sizes and materials are the basic settings to be created.
Modifiy the existing doors into the exact library is the easiest way out.
Visibility settings in Form is important and in plan view, model built is not shown, in model view, lines are hidden.

23. How do you relate a tag with other elements? wall tags/carparking lot tags?
Annotation>Tag by catagory>place the tags accordingly or select all elements to be tagged.
Further changes to be made to the tags through family editing.
All elements can be tagged. All tags can be modified to specific suit.

24. How to add parameters in a revit family?
We dimension the reference line created, add parameters to the dimension. The dimension can be alter under [Family Propeties>Type].
Further on, a formular/equation can be added into the parameters. for example, new dimension = (door height)/4.

25.How to draw group out as a file for later insertion?
select group>save as>library>group (rvg)

26.How to load group?
Insert>Load from Library>Load as group> select .RVG file

27.How to duplicate items to different levels?
Clip board copy can transfer group into different levels and files.

28.How to you update groups?
explode and update one group with different names, select the other groups to be updated through [Element/ Change Element Type].

29.How to create predefine few parameters within one Type of family?
Define family element through reference plane > select new > define new dimensions > save with different naming > select through selection scrolling.
Note: use type for

31. What is nested families?
Families can be nested into another family.

32. How to create a nested family?
Insert another family for example chair into the table family.

Day 2
Design and Analysis:-
Using Design Options:-
1. How to create design Options?
Manage>Design Option>new>name your options> edit selected > start creating your roof profile
To start on next option > goto Manage>Design Option> Scroll to Single Ridge to create another roof profile

2. How to attached walls to different roof options?
After finishing all profiles> select all the walls > Manage > Design options > add to set > attach the walls through design option alteration

3. How to show different views?
Create camera > set the view > duplicate view > rename the views > VG > under design option > select different option and the view will be updated accordingly

Note:-
Design Options is to show case different design within a single file through different group compilation. There will be one primary option to be show case, to alter, the set must be selected.

4. How to remove slope at roof?
select roof line > uncheck Defines Slope

5. How to select all walls?
move cursor near wall> click tab> left click mouse

Interference Checking:-
6.How to run an interference check?
Collaborate>Coordinate>Interference check>select items to check from current project with relevent documents>OK to run
Interference report will show the problems>rectify and refresh to clear interference.

Area Plans and Color Fills:-
7.How to create area plans?
Home > Room & Area > click on the triangular icon > area scheme > create area scheme and rename it
Area > type > select created scheme > create area outline through [Area Plan] > Select the area through clicking the cross > Rename the Indentity Data through select and right click the cross > create legend & schedules after the settings with the area type and naming are done

8.How to create schedules?
View>Create>Schedules>Select the area scheme created>add the items intended to show>create

9.How to create legend?
Select legend > edit color scheme > click to place legend

10.How to design phase?
Select all>right click>Element Properties>Phasing>Phase created> existing> VP > phasing > [phase filter:show complete] / [phase:Existing] > create/duplicate the floor plans to several naming intended(for example exterior demolision/interior demolition/interior renovation/main entry)
VP>phasing>select one of the phases defined through view created to show different states of complete/show previous+demo/show new/show existing
The intension is to show different phases of a project

11.What is the difference of View Filters and phase filters?
View Filter is what you do not want to see while phase filter is what you want to see.

12.How to set the display of different phases?
Manage>Phases>Phase Filters> do the settings accordingly with graphic overrides/phase filters and project phasees.
goto the particular view >VP>set the phasings accordingly to reflect your intentions.


Working with Professionals:-
12.How to build contours?
Massing&Site>Toposurface>Create from Import>Select Import Instance>Select the plan>choose the relevant layers> click on to build the toposurface.

13.How to buildng parking lots?
Massing&Site>Split Surface>Select the surface>wire frame to select the outline from cad (note: surface can only split into two segment per time) > ok to finish
Select the split surface > edit surface > make all contour point same level >

14.How to create building pad?
Massing&Site>Building Pad>set parameters

15.How to use graded region?
Massing&Site>Graded Region>Create a new toposurface based on perimeter points only>select the island>select all the points>elevation set 0> VP > phase filter show New

16.How to link the graded region with the contour?
Just set the contour point to same set value to visually join them
Select the contour>VG>topography>uncheck interior point>ok>select all the surrounding surfacepoint>set elevation to 0 or set value to connect the different contour height.

17.How to check interference?
Link revit file>collaboration>check interference>select items of current file and items of link files > ok to proceed with checkings > rectify the discrepancies and refresh to counter check

Revit Architecture Worksharing:-
12.How to create worksets?
Collaborate > worksets >create different sets of name > save as central file through checking the option icon >

Note: worksets can be created within a laptop with different users login.

Advanced Rendering:-
13.How to insert an image onto a wall?
Insert>Decal>Decal type> select images and place on wall.

14. How to adjust lights in group?
Go to 3d view> open the rendering setting through clicking the teapot> select Artificial lights in lighting scheme> click artificial lights> create new group options>select lights>drop selected lights into the group> adjust value

Thursday, January 21, 2010

Training by Inocomm technologies in Singapore

I had gone through the course in Revit Architecture 2010 training last year by an Autodesk authorised training centre in Singapore . The 3days full time course outline as shown below for your learning reference.
Day 1
Building Information Modeling
· Building Information Modeling
Revit Architecture Basics
· Exploring the User Interface
· Working with Revit Elements and Families
· Starting a Project
Starting a Design
· Managing Views
· Temporary Dimensions, Listening Dimension & Drawing Aids
· Creating and Modifying Levels
· Working with Grids
The Basics of the Building Model
· Working with Structural Foundation
· Adding and Modifying Walls
· Working with Compound and Vertically Compound Walls
· Using Editing Commands
· Working with Doors
· Adding and Modifying Windows
Loading Additional Building Components
· Adding and Modifying Component Families
Day 2
Viewing the Building Model
· Controlling Object Visibility
· Working with Section and Elevation Views
· Creating and Modifying 3D Views
Using Dimensions and Constraints
· Working with Dimensions
· Applying and Removing Constraints
Developing the Building Model
· Creating and Modifying Floors
· Adding and Modifying Ceilings
· Adding and Modifying Roofs
· Creating Curtain Walls
· Adding Stairs and Railings
Day 3
Detailing and Drafting
· Creating Callout Views
· Working with Text and Tags
· Working with Detail Views
· Working with Drafting Views
Construction Documentation
· Creating and Modifying Schedules
· Creating Rooms and Room Schedules
· Creating Legends and Keynotes
Presenting the Building Model
· Creating and Printing Drawing Sheets
· Working with Title Blocks
· Managing Revisions
· Creating Renderings
· Using Walkthroughs
· Using Sun and Shadow Settings

007-Issues encountered for revit BIM

1. How to deal with problem perspectives?
The easiest way out is an replacing the camera with another one with exact location

2. How to deal with material calculations?
View>Schedules>material Takeoff > Select required Fields > Go through the Formating/Filter/Appearance/Sorting icons.
Check the calculate totals under Formating
Notes: Schedules meant for rooms and area calculation, material takeoff is quantification of materials, both can incorporate formulas turned into costing

3. How to create ramps?
Home>circulation>ramp
Notes: ramps cannot have voids in it. Walls cannot be attached to ramps in revit2010
Tips: Create slope floors then ramps.

4. How to toggle with different unit designs/groups? [ Residential design ]
Just create group with the unit defined > select it > toggle with group selection under Element

5. What is the difference with group?
Group is similar to block in CAD and component in sketchup.
When items in group changed, the rest of the duplicated group follows.
Tips: It is advisable to ungroup items before array commands. Groups result heavier file size and slower work speed.
Therefore, using linked file is lighter for huge replication in a block.

Sunday, January 3, 2010

Revit Architecture Conceptual Design Environment Tutorial

"This tutorial is a series of demonstrations that show how to use the conceptual design environment to express design concepts and create parametric massing families that can also be used in the Revit project environment." to find out more...
Passage from http://usa.autodesk.com/adsk/servlet/item?siteID=123112&id=13709407&linkID=9243097

Thursday, December 24, 2009

Project 2- Future Arc Rendering

This is the latest work generated from revit architecture with photoshop color curve and contrast enhanced. A standard similar to 3dsmax rendering. Greater tool comes with greater responsibilities. This is a very exciting learning process in BIM. Cheers~!!

Monday, November 30, 2009

Revit exercise 29Nov2009

An apple shape created through revit mass loaded into revit project for rendering.
Floors are created through floor by face after mass floors created. Walls and curtain system created through selecting mass face. Rendering is just a click of the teapot icon with medium rendering settings.

Thursday, November 26, 2009

Revit 2010 on YouTube

Special Thanks to Naveen from Autodesk & Innocom here for the help for the tutorials and on going support.
There are lots of YouTube videos available for new learners who progress your learning path at your own pace through viewing online videos and I hope this blog can assist you in anyway as well, links are useful at the sidebar.

Hosted Point Revit Architecture & more...from David Light

Wednesday, November 25, 2009

006-Revit Mass & Revit worksets

1. How to turn off room areas in plan view?
VP> uncheck rooms
2. How to change color scheme in legend?
Select Legend> Edit scheme > Change color accordingly
3. How to create parametric façade?
Create Concept Mass Model > Create a Curtain panel pattern base.rtf > Insert
4. How to work with simple model building?
Autocad2010 is as powerful as max to create mesh smooth model to be import into Revit for mesh forms
5. Revit Worksets
Collaborate>worksets>create user>synchronize all> synchronize now ( to update all)
>reload to update >relinguish all mine to release authorities to others to work on your file> create new local must be checked
6. Revit Mass
New>Conceptual Mass>Metric Mass/Metric Generic Model > Create mass through ‘create form’ by lines similar to nurbs modelling
7.How to insert Mass into Project?
Massing & Site > Place Mass > Load Family > Place on work Plane
After Mass loaded into Project, rendering can be done

Monday, November 23, 2009

005-Issues encountered for revit BIM

1. How to import existing revit file into BCA template?
Open BCA template file > Manage > transfer project standard > link revit > select file > bind>ungroup>adjust objects accordingly to levels

2. How to create façade shading device?
Home>component>model in place>name your component> sweep>path>edit profile>close loop>finish
[The component is considered as a family and it is required to be categorized under certain categories to have certain entity properties]

3. The families divisions?
There are three families :
i. system families (walls/floors/roofs/stairs…)
ii. loaded families (doors/windows/curtain panels…)
iii. In place families ( file particular components)

4. How to establish detailing?
3d details can be omitted to avoid enlarging the file size. Callout created to adopt detailing at big scale drawings.
Annotate>mask region> drawing to establish details accordingly or cad import possible

5. How to establish legends?
Rooms> create rooms with tags > create Legend by room numbers > select legend > edit scheme > adjust title/ legends accordingly to intensions

6. How to establish area schedules?
View>schedules > schedules& quantities > new schedules> create name > insert intended items> finish and schedules are created at sidebar

7. How to attach wall with beams?
Attach beams with floors (one by one ) > attach walls to beams

8. How to insert car parking lots?
Massing & Site > Parking Component> Load component to insert

9. Schedules properties
The schedules created cannot adopt graphics/colors in revit2010

Wednesday, September 30, 2009

004-Issues encountered for revit BIM

1. Library for revit?
http://revit.autodesk.com/library/html/index.html
http://www.revitobjects.com/RevitLibrary/Default.aspx
http://www.revitcity.com/downloads.php
http://revitfactory.com/
2. Teaming/grouping
For small projects, recommended grouping into 3groups :
1.Site 2.Building 3.Façade

Notes:
Revit elements are divided into Model / Datum / View Specific Items
Work flow:
Concept>Dev control > working group > submission

Rte = dwg
Rvt = dwf

3. How to create site information? Concrete, planting strip, driveway, lot lines?
Property lines and offset property lines

4. How to import the library in?
Transfer project standards > select items to copy > railing.rvt

5. How to create shading through railing?
2nd level> railing > create railing path > pick lines > finish railing > modify railings > convert to xxx.rvt

6. How to change levels of railing?
Levels to be change through element properties > base offset


7. How to import wall elements?
Manage > transfer project standards

8. How to create floor slabs?
Modify Floors > Instant properties > materials > edit assembly

9. How to join floor to wall?
Modify > Edit Geometry > Join

10. How to change lineweight?
Manage > Settings > Object Styles

11. How to create beam?
Home > structural beam > place Beam > Load Beam > structural > Framing > Concrete > M_Concrete-Rectangular Beam
[Warning will be out if no structural Elements]

12. How to create stairs?
Home > Stairs > Create stairs sketch > instance properties > type [In-situ concrete 150mm waist]
Edit Type [to monitor maximum height minimum thread] > draw risers [indication will be shown]
Edit Sketch [to modify landing etc]

13. How to connect railings?
Create additional railings at joint. Edit railing Path to monitor

14. How to create concrete roofing?
Roof Level > Home > Roof > roof by footprint > uncheck defines slope [ can specify overhang ] > instance properties > Edit Assembly [ add layers/detailing / to the floor slab & check variables with sloping layer] > Draw > Modify sub Elements

15. How to create different texture on roofing?
Modify > Paint

16. How to attach wall to slab?
Select items > Modify wall > attach [check base] > select floor

17. How to create parapet copping?
File> new family > Select Template File > Metric Profile-Hosted.rtf > create > Line > save > load into project
Then go to instance properties of project
Edit Assembly > View : Section : Modify type > Sweep >

18. How to create area schedule?
Home > Room &Area > Place Room > Legend > Choose Space (choose none) > Edit scheme >create new type click the icon
View > Schedule > schedule/Quantities > Category > room schedule > schedule properties > add to scheduled fields

19. How to calculate ventilation ratio?
View > schedule > schedule quantities > view schedule > category room > room > properties of the room > add > calculated value (added item)
[renaming can be done through]
Schedule Properties > schedule fields (add items) > calculated value (Volumn/ floor area )

20. Area calculation is done through the room icon, middle wall?
Selections can be done when command in use.

Sunday, September 20, 2009

2010 Revit Ribbon Tips and Tricks

AUGIWorld

AUGIWorld, the official magazine, is published every two months and is made available free of charge to all AUGI members.

Download the most recent issue:

Click for high-resolution (37.5MB) version
Click for low-resolution (11.2MB) version

Wednesday, September 16, 2009

003-Issues encountered for revit BIM

1. How to built contour in Revit?
Through bringing different level lines/points (ddptype to create different point style)
Insert > Import CAD

Select Item > Split Surface > Drawing Line to split
Select surface > Element Properties

Notes: Orient to View ( referring to elevations/sections)
Civil 3d is for site building with more powerful tools.


2. How to add parking component?
Parking lots are family component in revit, can be added only on flat surface in revit:-
Massing & Site > Mode Site > Parking Component
Massing & Site > Building pad

3. How to create cross sections with complicated contour, site information with existing trees, pub lines?
Separate the file into site drawing & building drawing then link them together to another mother drawing. Create sections/ elevations in the mother drawing for export purposes.

4. How to create property lines/ boundary/ Setback?
Boundary: Massing & Site > Property lines
Setback creating : Masssing Site > Subregion
Planting strips : Masssing Site > Subregion (offset :1m)

5. How to create dimensions?
Create different views then dimension it.

6. How to create view specific items?
Home :Model line vs Anotate:Detail line (View Specific)

7. Revit Elements?
Revit elements are divided to 3 main categories: model elements (built on site)/ Datum Elements / View Specific Elements
-Only View specific Elements are bonded with particular view

8. When a wall is drawn over a column, the column changes into brick, how to avoid that?
Select items>family properties>Category and parameters>family parameters > automatically join > uncheck it

9. Drawing sequence:-

1. Establish the grid
2. Build the walls and columns
One wall type will do ( only architectural wall / columns)
3. After all the walls/columns, change the property to intended wall type
(Change one wall, then match type (match properties) for the rest)
4. Paste align the elements to different levels
5. Insert window and doors accordingly after wall done throughout the levels.
6. Build floor slabs.
7. Build roof
8. Build Ceilings.
9. Build staircase and structure(beam)
10. Build site.( can be linked revit, a separate file for easy access and lighter file size)

Notes: - in revit, no layer concept, only family components which is pre-defined of floors/walls/window/doors….

10. Methodology of residential design:-
1. Build different unit design
2. Build Block Plans with link unit designs
3. Build Building Block with link Block Plans
4. Build Master Plan with link Building Blocks
Master Plan study can be study through changing unit design and update links.
( to be further explored…)

Please feel free to comment. Cheers.

Tuesday, September 15, 2009

002-Issues encountered for revit BIM

Some simple rendering without any settings done within 3mins.
However, issues faced today as listed below:-
1.How to select overlaid objects?
Let cursor over objects > Tab

2.How to modify doors?
Select Object, Instance properties > Type properties > Duplicate > Change the dimensions

3.How to create blocks/components/family objects?
Create Group(group=family)
Multi-Select > Create Group

4.How to copy selected items with doors/windows/walls?
Error Message:-
“Rectangular Mullion, Rectangular_Mullion_Top_Right ' cannot be added to the instance of ' Model Group, Group 2 ' because of the following reason(s): Mullions and panels cannot be copied without copying the entire curtain wall. “
Group can still be copied. No issue.

5.How to mirror group?
Select items > Modify Model Groups > Modify > Mirror > Pick Mirror Axis/Draw Mirror Axis.
Outcome:-
Once Mirrored, the other group changes as well.
Therefore, group( Revit) = block( CAD).

6. How orbit isolated objects in 2d o 3d?
View > View properties > Extents > Depth Clipping
Or
Select isolated objects > toggle to 3d view

7. How to show different levels in 3d?
Go to 3dview > Right click> Orient to View > Floor Plans > select view

8. How to paste cut objects to different level?
Cut > Modify > Paste align

9. How to join angled object?
Just delete one of the mullions and change the mullion accordingly.

10. How to add annotations at particular view?
When we create annotation, it is view specific items, therefore, we create different views to adopt

11. Orbit in Revit?
Shift + middle click.Revit can only toggle the views in perspective view.

12.How to create associated family elements?
Tag that associated with dimensions?
Tag that associated with 3d?

13.How to render?
Just click the teapot icon at lower corner and adjust the materials accordingly.

14.How to create sheets?
Just Drag the views in and change scale accordingly.


Monday, September 14, 2009

001-Issues encountered for revit BIM

Please rectify me, if there are things missing/unsure/unclear by dropping comments. Cheers.
1. How to create gridlines?
i. Drawing 1st grid then copy, check multiple, then add dimension and change the figure, lock one figure and click the ‘EQ’ to set basic grid figure.
ii. Array your 1st grid, either with 2nd or last checked depending your grid setting purposes. Last one checked is to split the line evenly.

2. How to make link cad files grey tone?
View properties > visibilities display options > imported data > lines color or half tone checked
Or
Select items > Modify items (Top Right Ribbon) > View Graphics > Override
Object’s transparency/ half tone/ color can be adjusted.


3. How to establish dimensions?
Annotate > Aligned
Then click the dimensions
Modify dimensions > Edit Witness Lines > create multiple dimensions (click on the final dimension itself to stop)
To create dimensions, click on the walls and drag to intended position will do.

4. How to measure?
i. Through creating dimension
ii. Modify > Measure > Measure 2 reference / Measure along an element

5. How to snap angled wall?
Manage tab > Project Settings panel > Settings drop-down > Snaps
Keyboard shortcuts:-
Endpoints > SE
Midpoints > SM
Nearest >SN
Work Plane Grid > SW
Quadrants > SI
Centers > SC
Perpendicular > SP
Tangents > ST
Points > SX
Snap to Remote Objects > SR
Close > SZ
Turn Override Off > SS
Cycle through Snaps > Tab Key
Force Horizontal and Vertical > Shift Key ( Similar to F8 in Autocad)
Snap Off > SO (F3 in autocad)

6. How to select objects?
Select all with cursor > Filtering icon (bottom right corner) > Uncheck All, then select
But walls are one entity, therefore,
Group your wall for easy selection

7. How to duplicate objects in different views/levels?
Select objects > Modify Model Groups > Copy > Paste Aligned > Select Levels
How to lock object?

8. How to modify curtain wall?
There are no curved curtain walls, draw lines divide it, create simple walls then convert to curtain walls.
Curtain walls are to be manipulate in elevations
Home > Curtain Grid (create grid then mullions added automatically)
Manipulate corner joints by adding mullions in plan.

9. How to create floors?
Home > Floor > Modify (shapes created can be changed later)

10. How to view objects through selective layers?
No layers in Revit, can view through objects, through filters or
2nd floor can view 1st floor objects by View > view properties > Extents > View Range, play with settings of Primary Range and view Depth

11. How to show elevations of different levels?
Through Clipping view panels at elevations
Or isolate selected objects through clicking the ‘glass’ icon

12. How to lock levels and adjust lower floor level heights?
Lock the dimensions of the levels and adjust the one required to be change

13. How to hide grid in different levels?
Can half tone the grid.
Or right click > Hide Elements

14. How to set line viewport line thickness?
View > Graphics (Top Left Ribbon) > Thin Lines

15. How to build roads/pavements?
Create different floor slabs at different levels.

16. Pin objects can still be deleted, how to avoid that?
Not sure…

17. How to select hidden objects?
Click the 'light bulb', revealing hidden objects and select.

18. What is the Circular icons and triangular icons?
circular is base point (origin)
triangular (group objects)