Timber percentage NTA8800 (m166)

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With plug-in Timber Percentage NTA8800 (m166) you can calculate the wood percentage per element in accordance with the standard NTA8800 (Dutch Technical Agreement) 'Energy performance of buildings'. This wood percentage can then be applied when calculating the RC value of elements.

The calculated values are available in the user-defined attributes of the elements for further processing after applying the plug-in.

For this purpose, the plug-in generates a contour plate containing the necessary required data for calculating this energy performance of a building in accordance with the NTA8800 standard.

NOTE: The plug-in does not take into account the NTA 8800 regulations. The responsibility for setting up the plugin rests with the user.

You also have two additional plug-ins that facilitate the selection of the component and/or ACON, namely:

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 Double-click the macro to activate the Select objects in components button and the timber_NTA8800_ACON selection filter. This selects the ACON as a part.

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Double-click the macro to activate the Select Components button and the timber_NTA8800_M166 selection filter. This selects the component Timber Percentage (m166).  

Objects created

Contour plate.

Use for

Situation	Description
Image	Elements with door and window openings
Image	Convex elements
Image	Concave elements
Image	Roof elements

Before you start

Model a wall, floor or roof element.

Selection sequence

1. Select an element with the button Select assembly switched on.

General tab

On the "General" tab, all parameters are set.

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Option	Description
Exclude parts by filter	Select a selection filter that excludes certain parts from the calculation of the constructive area. Example: Image
Selection filter for openings	Select a selection filter that excludes openings from the calculation of the constructive area. Example: Image
Selection filter for concave cuts	Elements with a notch operation (concave) has to be calculated by an additional selection filter. It works as follows: 1. Use the Contour Plate command to model a plate the size of the notch. Image Image   2. Create a selection filter to select the plate. Example: Image   Image   3. Select the selection filter in the component. Image Please note that this selection filter has to be created by you and is not included by default in the plug-in.
Calculation mode based on	It is possible to adjust the constructive area by using the command Direct manipulation. Please indicate how the constructive area is to be calculated.
	Direct manipulation: The calculation of the constructive area is based on the adjusted constructive area.
	Element: The constructive area is calculated based on the surface area of the element.
Calculation plane	Specify where the ACON is to be calculated. On the inside or outside of the element. To be used when a frame consists of multiple layers in combination with the Shape of ACON defined by option.
Shape of ACON defined by	When a frame consists of several layers, it is possible to specify which layer should be adhered to. The options are:  Beams in zone 0 Beams in zone 0 in ACON plane This option is used in combination with the Calculation plane of the element option. Example of a frame consisting of several layers: Image
Filter on selected assemblies	Based on a selection filter, indicate which elements should generate a constructive area.
Create on selected assemblies	It is possible to create several elements simultaneously.

UDAs tab

The "UDAs" tab describes the hidden user-defined attributes (UDA's) that the plug-in writes.

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Option	Description
Write UDA values to ACON and	This option makes it possible to write the hidden user-defined attributes (UDA's ) to other objects as well.  Options: No other object Main part of assembly Assembly

About tab

Information about the "build" date of the tool. This date may differ from the date in the tool you are using, but the content may nevertheless be the same. This date may be required when you contact the helpdesk.

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