Parametric modelling of ‘Meiso no Mori’ Crematorium
This structure is a funeral hall amidst hill and lakes in
Japan. The most striking feature is its gently undulating white roof. The roof
is supported by and blended seamlessly into downward tapering columns. The 7.5”
thick reinforced concrete roof was designed to form the most efficient cover to
encompass internal spaces of different heights with a single canopy.
Modelling the unique roof of “Meiso no Mori” is the highlight in this BIM project. As the roof itself forms into columns, forming a monolithic roof column structure using mass family is the best approach for this project. To begin with, I modelled a column as generic adaptive component assuming that the column would adopt to the location while placing the monolithic structure. Modelling of the column was easy, the parameters used for the column shape were three radii and two heights. The modelled column is as shown below.
Followed by column, I modelled plan of the crematorium as a Revit project file. Formulating the plan based on the image plan file was easy. Site topography was created using massing and site option, the plan and footprint modelled are as shown below
Next I attempted the creation of roof column monolithic structure by placing the columns at twelve adaptive points in a generic adaptive component family. Then more adaptive points were placed on the top of the columns in a row such that parallel spline lines joined them. Then a flat mass was created using the parallel lines and adoptive points were used to pull the solid element to the shape required. In the real project analysis was performed to find the dimensions of the roof and their curvatures but for modeling purposes, I have just created an uneven surface very similar to the actual structure. The monolithic mass component is as shown below.
When I tried placing the adaptive mass, the columns after the first one started to fall apart whereas the roof was standing without the support of the columns. To rectify this I finally decided to just place one component and the rest following it as one mass component. The paneled roof model is as shown below
My intentions were to model the variation of curvature of the roof as a parameter of room/wall height. But as the curvature was based on structural analysis and I could not find the correlation between the curvature of the roof and height of walls. Also pinning or aligning the roof to the column or wall was not possible as the surface created was three dimensional.
Another intention as to parametric variable is the tapering diameter of the support columns which can be varied as a function of height of the roof. Higher the roof, larger is the diameter of the column supporting that. This was simple and easily accomplished this task.
Rendered images of the Revit model I created are attached below.
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