{"id":24848,"date":"2026-02-02T23:54:37","date_gmt":"2026-02-02T23:54:37","guid":{"rendered":"http:\/\/141.23.68.248\/wp\/?page_id=24848"},"modified":"2026-02-05T09:07:59","modified_gmt":"2026-02-05T09:07:59","slug":"parametric-model","status":"publish","type":"page","link":"http:\/\/141.23.68.248\/wp\/?page_id=24848","title":{"rendered":"Parametric Model"},"content":{"rendered":"\n

Introduction<\/strong><\/p>\n\n\n\n

This project explores parametric modeling of a multi-story reinforced concrete structural frame using Dynamo for Revit. The model is driven by a small set of input parameters, including span length, number of bays, number of floors, and floor height. When these inputs change, the entire structural frame updates automatically, allowing rapid exploration of alternative configurations.<\/p>\n\n\n\n

Design Challenge<\/strong><\/p>\n\n\n\n

The main engineering challenge is balancing structural clarity and material efficiency. Increasing span lengths reduces the number of columns but increases beam and slab demands. In contrast, smaller spans improve stiffness but introduce material redundancy through a higher number of structural elements.<\/p>\n\n\n\n

High Performance Criteria<\/strong><\/p>\n\n\n\n

To guide the design exploration, two high-performance criteria are considered: structural clarity and material efficiency. The parametric model makes the trade-offs between these criteria visible at an early design stage by showing how changes in span length and floor count affect geometry, member density, and overall structural layout.<\/p>\n\n\n\n

Model Logic<\/strong><\/p>\n\n\n\n

The structural frame is generated from a rectangular grid created using coordinate lists in the X and Y directions. Each grid intersection defines a point that serves as the basis for columns, beams, and slabs.<\/p>\n\n\n\n

Beams are created along both grid directions and replicated vertically according to floor height values. Slabs are generated by defining closed boundaries from corner grid points and converting them into surfaces, which are then given thickness. Columns are formed by connecting grid points between floors using vertical elements. All components follow a consistent height sequence to ensure correct stacking of the multi-story frame.<\/p>\n\n\n\n

Because the model is fully parametric, any change in input values updates the entire geometry automatically.<\/p>\n\n\n\n

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Design Space- Extremes and Limits<\/strong><\/p>\n\n\n\n

The whole model runs from a small set of parameters which control the grid, the spacing, and the height of the frame.<\/p>\n\n\n\n

Table 1: Input paramters for a structural frame<\/em><\/p>\n\n\n\n

Parameter<\/strong><\/td>Range Used<\/strong><\/td>Unit<\/td>Description<\/strong><\/td><\/tr>
Nx<\/strong><\/td>4 \u2013 10<\/td>m<\/td>Number of bays in X direction<\/td><\/tr>
Ny<\/strong><\/td>2 \u2013 6<\/td>m<\/td>Number of bays in Y direction<\/td><\/tr>
ax<\/strong><\/td>6 \u2013 9<\/td>m<\/td>Span length along X<\/td><\/tr>
ay<\/strong><\/td>6 \u2013 8<\/td>m<\/td>Span length along Y<\/td><\/tr>
edgeSetback<\/strong><\/td>0 \u2013 1<\/td>m<\/td>Offset from boundary<\/td><\/tr>
Floors<\/strong><\/td>3\u2013 10<\/td>number<\/td>Number of storys<\/td><\/tr>
Floor Height<\/strong><\/td>3 \u2013 3.6<\/td>m<\/td>Height between floors<\/td><\/tr>
Slab Thickness<\/strong><\/td>0.25 (fixed)<\/td>m<\/td>Visual\/slab thickness<\/td><\/tr>
Column Radius<\/strong><\/td>0.25 (fixed)<\/td>m<\/td>Column size (visual)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Figure 1: Input parameters for a structural frame in Dynamo<\/em><\/p>\n\n\n\n

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Extremes of the Design Space<\/strong><\/p>\n\n\n\n