‘technical workshops’ Posts:

x4_connected steel beams

As analyzed in the x2 the CCTV consists in a quite complex structure. In this case I tried to understand the connection of the different beams – vertical columns, horizontal perimeter edge beams and diagonal members. As the load on the structure changes from one point to another, there are several sizes of the columns, of which the smallest is 110 x 100cm.

different sizes of the columns and their location

There are many layers for the whole structure which are shown in the following drawings and images which I took – as the other illustrations – from the book CCTV by OMA, A+U, 2005

To allow the joint to connect beams comming from different directions, there is a additional element which takes over this function. Two connecting plates, which are also made of steel, are attached to the colomn and allow to fix the other structural members squeezed between them as shown in the drawings. To protect the steel structure in case of fire it is completely covered with a fire protection layer and a top coat.

bracing connection of structural members

my interpretation of the joint

The three main elements have different functions but only work together:

  • the vertical columns bring the forces directly down to the foundation.
  • the diagrid helps descend the forces but it’s main role is the bracing of the building – it is the part which gives the building its stiffness.
  • last but not least there are the perimeter edge beams which follow the edges of the concrete slabs and create the connection to them

This joint allows the connection of different inclinated elements. But all of them have to be nearly coplanar that they can fit between the two connecting steel planes. This fact limits the use of the element to places where the beams come together in a more or less flat surface.

solid table

Very simple table that consists of only one closed polysurface (solid) generated by three center boxes using boolean difference.


rhino views of two backed exampels and the grasshopper model

sliders to change

  • thickness of the top
  • section of the lags
  • hight, width and length
  • GH canvas which is very messy, there would be a much 'cleaner' way to do it I gues.

    to have a closer look to the Grasshopper file

    table exercice

    Exercice_table in grasshopper

    Exercise table

    Table 01 / définition plus lisible

    Même définition, mais plus lisible, et éléments renommés: