Summaries

Architectural Evaluation: Providing a sensible architectural statement to steel material by re-organizing the building having an existing steel system shell to a new function, unifying the interior spaces with nature, forming a new mezzazine floor with steel support structure in accordance with function and space by using the existing steel structure envelope and reaching a unique architecture by forming a pervious steel cover which also provides control of sunlight is found to be favourable.

The project is chosen in the awarded group of projects with respect to the strong connection of intertwining architectural and structural design in developing a light and pervious structural shell by specific and innovative interventions while keeping the steel structure in the existing building within the framework of ‘recycling’ and ‘sustainability’ in design process.

Engineering Evaluation: The project which enabled renovation of an existing steel space frame system in accordance with the foreseen function through reinforcing adds value to structural steel system renovation through architectural aesthetic understanding and creativity. New mezzazine floor formed through integration of the existing system in terms of load transfer and natural environment provides a successful architectural work of art with its lightness and sunshade effect in its

uniform shell view. Avoiding waste of raw material as required by good engineering is in line with structural efficiency philosophy. Connections, hinged members subject to axial loads in general and mezzazine floor cantilever interventions are well-designed in terms of constructability.

New supports and mezzazine floor system is constructed without disturbing the integrity of the existing space frame system but distinguishable visually from the existing structure, with a compliant technical approach and respect. Reforming the covering system, light structure of sunshades being parallel to the repeating structure of the space frame system and façade supports also repeating this integrity not only strengthens the membrane roof in the structure in general but also completes the façade frame.

 

Architectural Evaluation: Its architecture being appropriate to its boundary conditions due to its location, environment and function, with special emphasis on the solutions brought to steel structure system and contemporary statement of steel, its lightness and pervious structure, and contribution of local companies both in design and execution is found to be positive.

With lengthy spans of 218 meters on one side and 165 meters on the other, roof of the project which can be called the fifth façade is designed with cable system and PTFE covering as a light and elegant veil, and constructed with a method which requires global advanced engineering. Project is considered in the award category due to the fact that design and execution stages of the steel roof cover are a significant engineering initiative for Turkey and steel being used with technology brings the advantages to the forefront.

Engineering Evaluation: Stadiums are very special structural systems having very large spans and housing large crowns in line with their functions. Use of structural steel with tensioning systems in the most innovative way requires advanced construction technologies. Vodafone Arena possessing this kind of roof system is the most striking example with its brilliant engineering design formed by inner and outer circles, visual function with its location in the most significant area of the city and roof installation technique which requires an extraordinary precision.

A very efficient engineering study was conducted to cross the large span with a light tensioning system as in suspension bridges.

Roof structure formed with a compression ring on the outside and a tension ring in the middle designed with the bicycle tire principle owes its elegance and economy to being constructed out of members which carry only axial loads. In this respect, this roof construction is a masterpiece of engineering. It has become one of the most special structures in our country and made landmark engineering reachable by displaying this technology right in the center of the city. It has also set the bar for new generation engineers and architects, and beneficial in terms of our professional progression.

 

Architectural Evaluation: Forming of an appropriate shell for functional and technological conditions in natural habitat in compliance with the characteristics of steel is found to be positive.

Kadıyayla Cable Car Station at the altitude of 800 meters above sea level which is subject to strong winds and snow loads at certain times of the year is targeted to be a tunnel opened on a hill covered in snow in architectural design and is considered in the project award category considering the strong connection between architecture and function of the steel construction system used in achieving the domed amorphous form.

Using steel in Uludağ Kadıyayla Cable Car Station construction is a very positive design preference in order to protect the nature of the area located in a national park.

The lightness and curvilinear structure of the structural system matching with the natural environment is a result of an effort which does not accept simplicity, even for such a small structure.

Layout of the frames following the shell cover structure lines in a natural way and their repetition in general creates a neat and meticulous structure. Furthermore, it is observed that the cross-sections and intervals of these members have been used in right proportions or in an optimal manner. Holes in the members also show that optimization and electromechanical reservations proved to be possible. It is also observed that frames follow up the general space shell geometry in connections with the shell and shell connections are made optimally and aesthetically with minimum number of secondary structures.

 

Architectural Evaluation: Integration of perception of steel material with the expression of architectural form, support structure of the building formed through grid steel skeleton constituting the façade in addition to structural core, simple understanding of the form and interior space flexibility of the structure is found to be positive.

The project is awarded in project award category considering that structural design is transformed into a design object defining the identity for the structure in façade architecture in the design of this office building having a construction area of 21.000 square meters whereas allowing open space design in interior space organizations is found to be a strong approach.

In the structure which is a successful example of a composite structure formed of structural steel and concrete, the core comprises of concrete while outer support members comprise of steel system enabling the use of steel in the most visible way and makes it impressive as a design parameter.

It is observed that an optimal composite structural system is chosen for a midheight office building with a concrete core and steel system being used in façade system and slabs. It is possible to create the maximum office space in square meters and allow the forming of a flexible and changeable floor for renting with this system. In this structure typology, concrete core is more convenient in many aspects such as fire protection and electromechanical vertical coordination while being the most rational solution when used with steel in slabs and façade in a composite manner.

No additional column line is considered between the core and façade in this floor plan and the spans, which is the correct approach. The exo-skeleton on the outside and reinforced concrete shear walls on the inside can be constructed with sufficient rigidity for both vertical and seismic loads. Diagrid, or exo-skeleton, system is used in the outer frame instead of columns.

Cross-sections and layout of the members need to be optimized after finalization of the structural calculations. This is a beneficial approach for both economy, which is a requirement of good engineering practices, and allowing light in the office spaces. Spaces between the core and façade are at designable distances forming the diaphragm with composite beams having reasonable heights.