Guidelines to create Building Information Modelling (BIM) models for AAP, P1, SOM & SPC

Appendix 5

Guidelines to create Building Information Modelling (BIM) models for

AAP, P1, SOM & SPC

Preparation for Architectural Assessment Panel(AAP) Submission

(Same details requirements on Revit models for P1, SOM & SPC Submission) 1. Procedures for site model creation

1.1 Start new project with standard template

Fig.1.1 1.1.1 Set the level of the project

 Set the base level of the site

 Set other levels for main structures (e.g. two domestic block sit on different levels)

1.2 Import base plan (site layout/setting plan) as reference 1.2.1 Set Origin as the project co-ordinate (in AutoCAD)

1.2.2 Clean-up the CAD file (dwg) before import to Revit  Delete all areafill (i.e. solid pattern, hatching etc.)  Delete unnecessary annotation and geometry  Purge the CAD file

 If you found that some blocks were not in the original position after import in Revit, explored those blocks before import.

1.2.3 Import CAD file (dwg) as base plan

Fig. 1.2.3 1.2.4 Setting for plan location

1.2.5 CAUTION: If the site is far away from the Origin or the site coverage is large, the following warning would be encountered.

Fig. 1.2.5

1.2.6 Check the import plan in the right position

Fig. 1.2.6

Suggestion for the setting:-

 Import the CADD file as link  Import Units set to millimetre

 Positioning set to Auto – Origin to Origin

 If you checked the Current view only, that means the base plan will display in the plan view only and not in 3D views or elevations.

1.3 Create toposurface 1.3.1 Import survey data

Refer to Guideline for handling 3D spartial data from LandsD 1.3.2 Create toposurface by survey point/base plan

1.3.2.1 Create the toposurface by selecting/input the survey point/level point

Fig. 1.3.2.1a

Fig. 1.3.2.1c 1.4 Create Pad to form building platform

Fig. 1.4

Summary

Index Procedures for site model creation Reference 1.1 Start new project with standard template

(path:- Z:\BIM\Standard Template\ Architectural.rte)

Fig. 1.1

1.2 Import base plan (site layout/setting plan) as reference Fig.1.2.1, 1.2.3, 1.2.4, 1.2.5, 1.2.6 1.3 Import survey data to create toposurface Fig. 1.3.2.1a, 1.3.2.1b, 1.3.2.1c 1.4 Create Pad to form building platform Fig. 1.4

2. Procedures for Flat Mix (typical floor plan) model creation 2.1 Start new project with standard template (refer to 1.1) 2.2 Create Flat Mix model

2.2.1 Create reference line or grid line for setting out

2.2.2 Import standard modular flats to create the flat mix 2.2.2.1 Import the standard modular flats from HA Library

(path: z:\Bim\HA Library|\Grouped Model\ Standard Modular Flats)

Fig. 2.2.2.1a

2.2.2.2. Compose modular flats to create flat mix floor plan

Fig. 2.2.2.2

Tips for compose modular flats  Import modular flat as link

 Use rotate, move, mirror and copy functions to compose the modular flats

 Group function is not recommended for composing modular flats, since it consume a lot of resource)

2.2.3 Create common area (i.e. lift core, corridor, staircase & service room etc.) to complete the typical floor plan

Fig.2.2.3

Tips for create common area  Create construction line

 Import Grouped Model as link (e.g. staircase, loft core, service rooms etc.)  If no suitable Grouped Model, create the component in field

Summary

Index Procedures for site model creation Reference 2.1 Start new project with standard template

(path:- Z:\BIM\Standard Template\ Architectural.rte)

Fig. 1.1 2.2 Create Flat Mix model and export the plan view as the

typical floor plan for flats mixing submission

Fig. 2.2.1, 2.2.2.1a, 2.2.2.1b Fig. 2.2.2.2, 2.2.3

3. Procedures for Massing of blocks creation

3.1 Export the typical floor models to 2D CAD files, for more easy to handle in Revit.

Fig. 3.1 Uncheck the xref views on sheets to create single CAD file. If checked, the

3.2 Import the typical floor plan and locate in right position.

3.3 Trace the outline of the building and create the Massing

Fig. 3.3

Trace the outline of the building

Create Mass

3.4 Apply colour to the Mass

Fig. 3.4

Edit the Materials in Element Properties of

the Mass

1. Select material or duplicate material to create a new material colour 2. Adjust the Transparency if necessary

3. Apply Surface Pattern if necessary

If required to apply different colour to the surface of Mass, use Paint function (e.g. Green R f)

3.5 Export 3D views and elevations for submission

Fig. 3.5 Tips for creating Mass

 Give meaningful name to the mass

 Create mass as Solid Extrustion (most common), if for special shape, you might need to create mass by other forms

 Change the material in element properties to assign colour to the mass  Use Paint function to apply colour to individual surface of the mass  Set Shading with Edges on

Summary

Index Procedures for site model creation Reference 3.1 Export the typical floor models to 2D CAD files Fig. 3.1 3.2 Import the typical floor plan as reference Fig. 3.2 3.3 Trace the outline of the building and create the Massing Fig. 3.3

3.4 Apply colour to the Mass Fig. 3.4

Appendix 6

Preparation for Project Design Review Committee (P2) Submission

(Same details requirements on Revit models for BC, DDRP1 & DDRP2 Submission) 1. Procedures for site model creation

1.1 Method 1:-

Retrieve the site model from previous submission (i.e. AAP, P1, SOM or SPC). 1.2 Method 2:-

Create the site model from zero. Refer to Part 1 of Guidelines for creating BIM models for AAP, P1,SOM & SPC submission

2. Procedures for Flat Mix (typical floor plan) model creation 2.1 For P2 & BC Submission:-

Retrieve the typical floor plan (LD2 modular flats) from previous submission (i.e. AAP, P1, SOM or SPC).

2.2 For DDRP1 & DDRP2 Submission:-

2.2.1 Retrieve the typical floor plan (LD2 modular flats) from previous submission; replace the modular flats with LD3 modular flats models.

2.2.2 Input details to common areas.

3. Procedures for creating Ground Floor, First Floor and Roof models

3.1 Method 1:-

If you have the CADD files (i.e. AutoCAD files) of the floor plans, insert the floor plan to Revit and base on the CADD drawing to create the model.

3.2 Method 2:-

If you do not have any CADD files of the floor plans, start with standard template in Revit, create the model in Revit directly.

4. Procedures for building blocks creation (LD2) 4.1 For elevations creation:-

Retrieve the typical floor plan (LD2 modular flats) from previous submission; replace the modular flats with LD1 modular flats models.

4.2 For elevations creation:-

Retrieve the typical floor plan (LD2 modular flats) from previous submission. 4.3 For building block creation:-

Tips:- When creating each floor of building model, they should use the same co-ordinate and level system, and then the model will be in right position when linked

To compose the Ground Floor model, First floor model, Typical Floor model (LD1 modular flats for elevations creation and LD2 modular flats for section creation) and Roof model to form the building block.

4.3.1 Start a new model with standard temple 4.3.2 Create Levels for the building block

Fig. 4.3.2

4.3.3 Import Revit models

4.3.4 Import the Ground Floor + First Floor +

Typical Floor (LD1 modular flats – for elevations) or Typical Floor (LD2 modular flats – for sections) + Roof to form the building block

Fig. 4.3.4a Ground Floor

Fig. 4.3.4b Ground Floor + First Floor

Tips:- For Positioning of the import model, it depended on the setting when you creating the model. Auto - Center to Center & Auto - Origin to Origin are the most common setting for single block. When import the building block to site base model, we should use Auto – By Shared Coordinates

Fig. 4.3.4c Ground Floor + First Floor + Typical Floor

Fig. 4.3e Elevation of Building Block

5. Import the building blocks model to site base model to create the project model

Fig. 5a Site Base + Carport + External work

Fig. 5c Site Base + Carport + External work + Two Domestic Blocks

Fig. 5e Site Sectional Elevation B

6. Other Details

For complex details, please draw in AutoCAD (e.g. aluminium window details, details of expansion joints etc.). If you draw everything in the Revit project models. The application will be corrupted.

Tips:- i) Simply the models to minimum

ii) When import huge model (e.g. the domestic block) into the site model, you might need to unload other link files temporary, and then reload afterward. It can decrease the re-generation time and speed-up the file loading.

iii) Delete all necessary views, elevations and sections. Since each view need resource to re-generate.

Appendix 7

Handling 3D Spatial Data from Lands Department in BIM models

1.1 3ds file from Lands Department

Fig.1.1

1.2 Import 3ds file to AutoCAD 1.2.1 Import to AutoCAD

1.2.2 Select 3ds file

Fig. 1.2.2

1.2.3 Define import options

Fig. 1.2.3a

1.2.4 File imported in AutoCAD Plan View

Fig.1.2.4a 3D View

1.3 Move all elements close to Origin 1.3.1 Select all elements

Fig.1.3.1 1.3.2 Define base point

Fig. 1.3.2 1.3.3 Move all elements to the origin

1.4 Re-scale the file to 1:1

(Since the files from Lands Department are 1:1000 or 1:5000, normally 1:1000 ) 1.4.1 Select all elements (Refer to 1.3.1)

1.4.2 Define Base point

Fig.1.4.2

1.4.3 Re-scale all elements – input scale command

Fig.1.4.3 1.4.4 Input scale factor - 1000

1.5 Separate the terrain and existing building blocks into different files (Save the file before process)

1.5.1 Delete & purge all existing building blocks and save the terrain profile

(If the terrain is not suite as our site formation, you might need further touch-up for the terrain by other application – e.g. Autodesk Civil 3D)

Fig. 1.5.1

1.5.2 Open the original file, delete & purge the terrain and save the existing building blocks

1.6 Delete the existing building blocks within the site boundary (building in red colour) 1.6.1 Before delete

Plan View

Fig. 1.6.1a

3D View

1.6.2 After deleted Plan View

Fig. 1.6.2a

3D view

2. Works in Revit

2.1 Import the terrain, existing buildings and new layout plan (AutoCAD format) into Revit as reference

Refer to step 1.2 in Guidelines to create Building Information Modelling (BIM) models for AAP, P1, SOM & SPC submission

2.2 Create the massing of new blocks

Refer to step 3.3 & 3.4 in Guidelines to create Building Information Modelling (BIM) models for AAP, P1, SOM & SPC submission

2.3 Export 3D views and elevations for submission/presentation

Refer to step 3.5 in Guidelines to create Building Information Modelling (BIM) models for AAP, P1, SOM & SPC submission

Fig. 2.3b

3. Export the new building block to 3D MAX for further touch-up

Fig. 3b

4. Output from 3D MAX

Fig. 4a