.. _split_object-label:

===========================
How to handle split-objects
===========================
Some objects are to large to assess as one. In this case the object is split and per object-part the analysis method can
differ. After the kick-off there should be a meeting to discuss the interaction between the different object parts.

Split model meeting
===================
This step is only required in case one object will be analysed with two or more analyses methods and is split up. In
many cases, the other calculation method is the MRSA. In the example underneath the object will be analysed partially in
NLTH and in MRS (these are referred to as different object parts. The meeting will consist of the following attendees
and can be set up by either structural engineer.

1. Lead engineer of the object part with analysis method NLTH
2. Lead engineer of the object part with analysis method MRS
3. Structural engineer of the object part with analysis method NLTH
4. Structural engineer of the object part with analysis method MRS

The aim of the model split is to find a vertical cutting line that will split the object and that allows two (or more)
different parts. It is important that the eigen modes of the individual objects are close to the complete model. The
structural elements along the cutting line will be considered in all models but is only analysed with one method. This
also means that the model in which the foundation strip is analysed, needs to take into account the static loads from
the other part.

.. figure:: _static/howto_split_objects/SplitModel.png
    :align: center

    Example situations of connecting object parts.

The agreed model split should be saved in the remarks section of the object on the
`MYVIIA <https://myviia.viiagroningen.nl/>`__) webtool. See figure underneath for an example.

.. figure:: _static/howto_split_objects/MYVIIADemarcation.png
    :align: center

    Example demarcation in MYVIIA.

The knowledge-team has written a guideline for coupling of mixed analysis. The purpose of that report is to propose a
standardised way of working for structures that due to structural, practical and/or economic reasons are decided to be
divided and analysed with different assessment techniques.

`► VIIA_QE_R2034 Guideline for coupling of mixed analysis <https://royalhaskoningdhv.box.com/s/2kbg4plt9c38junftfqk6we6zn3p1bf2>`__