VSH Turòa nad Bodvou - Nemetschek Scia

Short list
Client: Hevo bouwmanagement
Architect: Liag architecten
Construction company: Teerenstra bouw
Floor area ground floor: 400 m 2 (auditorium / media room)
First floor height: 6,5 m
General
The project includes a renovation and an extension of a college
in Beverwijk (the Netherlands). In the centre of the existing buildings
a new auditorium and media room have been designed. The
concept of the new auditorium and media room will be further
explained below.
In consultation with the architect, the new building has been
designed in a steel structure with the shape of trees. The reason for
this typical design for the structure is the demanded free space on
the ground floor in combination with a light roof structure.
The steel structure of the trees will be visible in the final situation. In
the middle section between the trees a ceiling is applied under the
first floor to hide the installation facilities.
On the ground floor there are four trunks that carry the first floor
and the roof. On the first floor there are also four trunks with each
four twigs. On each side of the first floor there are two trunks with
two twigs.
The trunks on the first floor are positioned on the twigs of the
ground floor.
The geometry of the trees and the position of the trunks is optimised
by making the twigs of the trees balance each other. Because
of this the bending moment in the trunk by permanent loads was
minimised. However, a bending moment will occur in the connection
between the twigs and the trunk because of the variable loads
on the floor and loading / unloading combinations.
The roof consists of a light steel plate supported by beams in two
directions. The stability of the roof level is realised by the beams
and the cold formed steel plate. In two directions the beams are
supported by the trees with a distance of four metres.
The first floor is designed as a hollow core floor supported by the
steel structure. The stability of this level is realised by a cast-in-place
concrete topping on the hollow core slab. On this floor there will
be a media centre with mainly computers for the students.
In some parts under the first floor steel beams extend out of the
concrete floor, in these parts a ceiling has been placed. In the part
without a ceiling the floor beams are integrated in the concrete
floor.
Because of the geometry and the dimensions of the trees, some of
the twigs are welded on the trunk in the factory and then they are
transported; on the construction site the other twigs are welded
on the trunk.
For the horizontal stability the structure is supported by the main
building.
It is not necessary to protect the whole steel structure against fire.
In case of an emergency an escaping route can be found through
the main building.
The round hollow section columns on the ground floor are filled
with sand to reduce the possible occurrence of noises.
This project is a typical project for a three-dimensional calculation.
Many projects can be designed and calculated with two-dimensional
calculations but for this project a three-dimensional calculation
has to be performed because of the complexity of the structure
and the loads on the floor and on the structure.
Aula - Multimedia library of the Kennemer
College
The expansion of a school is designed in a steel structure
based on a tree structure. On the ground floor occur four
trunks with each four twigs carrying the first floor as well
as the trunks on the first floor. Special attention with regard
to the calculation was given to the variable loadings on the
floor. In the design progress, in consulting with the architect,
the position of the trunks was optimised so the bending
moment in the trunks was minimised.
With a three dimensional calculation the whole structure is
designed. The roof is designed in a light steel plate resulting
in a slender steel structure.
Aula mediatheek Kennemer college
147