Difference between revisions of "BlenderBIM Add-on/BlenderBIM Costing"

From Wiki.OSArch
Line 1: Line 1:
−
 
−
 
 
{{BlenderBIM_Add-on_Documentation}}
 
{{BlenderBIM_Add-on_Documentation}}
  
−
==Project structure==
+
==Introduction==
−
Each Project using BIM needs to be set up with the proper structure. BlenderBIM uses the open data structure of [[Introduction_to_IFC|IFC]]. As with almost everything with BlenderBIM, you can do that either manually from Blender itself, or use the specialized commands provided by the add-on.
+
Each Project using BIM needs to be set up with the proper structure. BlenderBIM uses the open data structure of [[Introduction_to_IFC|IFC]]. As with almost everything with BlenderBIM, you can do that either manually from Blender itself, or use the specialized commands provided by the add-on.  
−
 
 
−
==Cost Scheduling tools in BlenderBIM==
 
−
The fastest way to create the project structure is to use the BlenderBIM add-on "Quick project setup" feature. To do that, you first need to select the proper template to be applied when the project structure is set up. This template lies in the so-called project schema directory, which is by default set to <code>BLENDER_ADDONS_DIR&frasl;blenderbim&frasl;schema&frasl;</code>. You can choose the project schema directory in Blender under Scene > Building Information Modeling > Schema Directory.
 
−
 
 
 
The default folder is prepackaged with the IFC4 schema and you can download different schema from the buildingSMART website. However, unless you are an IFC guru, you shouldn’t have to touch this.
 
The default folder is prepackaged with the IFC4 schema and you can download different schema from the buildingSMART website. However, unless you are an IFC guru, you shouldn’t have to touch this.
  
Line 16: Line 10:
 
This will create a basic spatial tree. It will create a tree of collections with the structure IfcProject > IfcSite > IfcBuilding > IfcStorey This is merely for convenience instead of having to create it all by yourself, since all IFC exports require a valid spatial tree. You can see the tree of collections in the outliner when this is done.
 
This will create a basic spatial tree. It will create a tree of collections with the structure IfcProject > IfcSite > IfcBuilding > IfcStorey This is merely for convenience instead of having to create it all by yourself, since all IFC exports require a valid spatial tree. You can see the tree of collections in the outliner when this is done.
 
[[File:BlenderBIM QuickProjectSetup 01.JPG|frame|center|Quick Project Setup, Schema and Data directories]]
 
[[File:BlenderBIM QuickProjectSetup 01.JPG|frame|center|Quick Project Setup, Schema and Data directories]]
 +
 
- Option 2: Importing an .ifc file
 
- Option 2: Importing an .ifc file
 +
  
 
==Creating a Cost Schedule==
 
==Creating a Cost Schedule==
−
The standard project structure, as proposed by Building Smart (the developer of IFC) and currently default in the BlenderBIM add-on, is following:
+
Insert Content Here
−
*site as IfcSite
+
 
−
*building as IfcBuilding
+
==Creating a Cost Items==
−
*storey as IfcBuildingStorey
+
Insert Content Here
−
*space as IfcSpace
+
 
−
A project can include any number of sites, a site any number of buildings and so on.
+
== Creating Cost Item Values==
−
The abstract spaces, converted to their respective IFC counterparts on export, are represented by a hierarchy of collections. Any objects outside a IfcSite collection will be ignored on export.
+
Insert Content Here
 +
 
 +
== Creating Cost Item Quantities==
 +
Insert Content Here
 +
 
 +
==Assigning Building Elements to Cost Items==
 +
Insert Content Here
 +
 
 +
== Deriving Quantities for Cost Items==
 +
Insert Content Here
 +
 
 +
== Copying Cost Items Values==
 +
Insert Content Here
  
−
Empty axes objects, with names identical to those of their container collections,  are automatically placed in the project structure created by the Quick project setup command and they serve several purposes:
+
== Caclulating Cost Item Values of Parent Cost Items==
 +
1 - What Are Component Values?
 +
2 - Calculating overall cost based on nested cost items
  
−
They hold the IFC properties for the spatial elements. IFC spatial elements (e.g. sites, buildings, elements) can store properties (attributes / psets / qtos / etc). In Blender, if you click on an object, you can see the object panel and manipulate it via the UI. However, for a collection, there is no UI panel associated with the collection. So for convenience, an object is provided that people can click on.
 
  
−
They define the IFC placement of the spatial element. IFC spatial elements almost always have a placement. E.g. a building storey has an elevation value (e.g. a Z coordinate). Blender collections do not have physical locations. Therefore, at the very least, an empty is required, so you can set the placement.
+
=='''Part II'''==
 +
==Assigning Building Elements to Cost Items==
 +
Insert Content Here
  
−
They serve as a placeholder for IFC representations of the spatial element. IFC spatial elements may have representations. E.g. a building or site can actually have geometry associated with it. Therefore, we need an object. In this case, we need more than an empty - we need an actual mesh object.
 
  
−
Note that the name of the Representation object (empty axes or anything else you use) has to be kept identical to the name of the collection it belongs to. So if you rename a storey for example, the empty must be renamed as well.
+
[[Category:Blender]] [[Category:BlenderBIM Add-on]] [[Category:BlenderBIM Costing]]
−
[[Category:Blender]] [[Category:BlenderBIM Add-on]]
 

Revision as of 05:56, 29 May 2021

Please remove this "BlenderBIM_Addon_Documentation" template.


Introduction

Each Project using BIM needs to be set up with the proper structure. BlenderBIM uses the open data structure of IFC. As with almost everything with BlenderBIM, you can do that either manually from Blender itself, or use the specialized commands provided by the add-on. The default folder is prepackaged with the IFC4 schema and you can download different schema from the buildingSMART website. However, unless you are an IFC guru, you shouldn’t have to touch this.

Project setup

- Option 1: Native authoring of IFC in BlenderBIM You can find the command in Blender under Scene > Building Information Modeling > System Setup. This will create a basic spatial tree. It will create a tree of collections with the structure IfcProject > IfcSite > IfcBuilding > IfcStorey This is merely for convenience instead of having to create it all by yourself, since all IFC exports require a valid spatial tree. You can see the tree of collections in the outliner when this is done.

Quick Project Setup, Schema and Data directories

- Option 2: Importing an .ifc file


Creating a Cost Schedule

Insert Content Here

Creating a Cost Items

Insert Content Here

Creating Cost Item Values

Insert Content Here

Creating Cost Item Quantities

Insert Content Here

Assigning Building Elements to Cost Items

Insert Content Here

Deriving Quantities for Cost Items

Insert Content Here

Copying Cost Items Values

Insert Content Here

Caclulating Cost Item Values of Parent Cost Items

1 - What Are Component Values? 2 - Calculating overall cost based on nested cost items


Part II

Assigning Building Elements to Cost Items

Insert Content Here

Retrieved from "https://wiki.osarch.org/index.php?title=BlenderBIM_Add-on/BlenderBIM_Costing&oldid=3707"