Weathering of Concrete
Weathering is the effect of pollution and natural forces, such as frost, rain and sunlight on a structure, which happens significantly to most building facade in Yugoslavia. The main weathering issue with concrete is unexpected variations in the visual appearance of the structure. Dust in the atmosphere is deposited on the facade. The flow of rainwater tends to wash some areas preferentially, resulting in significant differences in colour between clean and dirty areas. The phenomenon is influenced by many factors, including the surface texture of the concrete, the architectural detailing and the orientation of the structure. The external factors could be rainfall and air pollution. Rainfall is usually slightly acidic due to the dissolution of carbon dioxide in the water in the atmosphere. Air pollution in the form of sulphur dioxide increases the acidity of the rain due to the formation of sulphuric acid. This tends to etch the surface of concrete or mortar, and create the natural and rustic aesthetic of weathering.
The newly proposed Neretva Hotel has a signature cascading form of the Yugoslav hotel architecture with large balconies, provides optimum river view to the users. It is a reinforced concrete structure finished with cement screeding. Groove lines on the facade justify the proportion of the monumental building scale and give rustic weathering effect to the building.
Tombstone Facade of Razvitak Mall
Stecci is the name for monumental medieval tombstones that lie scattered across Bosnia and Herzegovina, and the border of part of Croatia, Montenegro and Serbia. An estimated 60,000 are found within the borders of modern Bosnian and Herzegovina and the rest of 10,000 are found in Croatia, Montenegro and Serbia. Stecaks (plural) are described as stone, monolithic, horizontal and vertical tombstone prismatic shape with flat or gable-top surface, with or without pedestal. The most remarkable feature is their decorative motifs, many of which remain enigmatic to this day - spirals, arcades, rosettes, vine leaves and grapes, stars and crescent moons are among the images that appear. Figural motifs include processions of deer, horse, dancing the kolo, hunting, chivalric tournaments. The most famous image is the man with his right hand raised, perhaps in a gesture of fealty.
In Project M93, the damaged Razvitak Mall is reconstructed as a reinforced concreted structure finished with cement screeding. The remaining Stećci pieces from the former Razvitak Mall are reconstructed and reintegrated within the new facade. Groove lines on the facade justify the proportion of the monumental building scale and give rustic weathering effect to the building. The facade glass panels break down the monumentality as well as to provide visibility from inside.
Drawing techniques : Hand-drawn ink line and watercolour.