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Student: Costiuc Elena
Group:3304
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The "National Theatre" was built between 1891-1896, on the
former City Hall of Iasi, after the plans of architects Felner and
Helmer.
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Old building of the National Theater in Iasi
(Copou) built in 1846 and destroyed by the fire
in 1888
http://ro.wikipedia.org/wiki/Imagine:TNI_1846.jpg7/27/2019 Reabilitare Elena
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Building 1
The structure is made of bearing masonry, slabs of brick and steel profiles, with the area
from the second floor having concrete between the steel profiles.
Foundations are continuous under the bearing walls made of stone with hydraulic lime,with consolidated areas through concrete.
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Building 2
The structure is made of
frames of monolith
reinforced concrete with
reinforced concrete slabs.
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Building 3(4)
The structure is made of bearing masonry with monolith reinforced
concrete slabs and the foundations are continuous under the bearing
walls, made of concrete.
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Technical Expertise
-Water infiltration from melting snow
The spectacle hall during the winter is heated with hot air making the temperature of
the bridge to climb up to 18-20 degrees. In these conditions the roof sheet allows
rapid melting of snow and water flows into the collecting gutter.
The sewerage no longer being maintained doesn't have any connection to the drain
pipe. Thus a part of the water flows on the walls.
Solutions:
- Ensuring the flow of rain water goes directly into the sewerage system;
- Remaking the thermal insulation with mattresses of mineral wool in the polyethylene
sheeting;
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The first
renovation was
plastered over the
old plaster with
mortar whichcaused cracks in
the new plaster.
Solutions:
-decopertation of old plasters(affected by dampness or rain water) and
adjacent areas of drain pipes, closing the cracks with mortar by injection of
the cracked walls and restoring plasters in marble dust with 100% white
cement and coloring areas under slab facades of the project .
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Exfoliations, cracks, detachmentseven falling of the stairsin the
posterior and lateral facades. The lateral facades are not usually plastered
(as in this case) because during the winter waters from snow infiltrate, freeze
and provoke cracks.
All stairs from the outside and those of stone from the main entrance from the
theatre and from the entrances and secondary accesses are affected (stairs and
parapets).
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Solutions:- At the stairs from the secondary accesses will be recovered all the steps with
mosaic stone, white marble and the walls (just like the plaster of socket).
-The access stairs are mainly from stone and will be repaired by plastie and
the parapets with decorative motives will be cleaned and treated like other
elements of stone of the theatre.
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Fractures between the socle and the ornamental columns
from the facades due to soil settlement
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Removing the stone socle
Deterioration of the stone foundation and the bricks by crumbling and
crushing due to chemical processes between them and silicate brought in to
strengthen its land under a constant humidity and raising the walls by capillarity.
Solutions:
- We tried to introduce sodium silicate for removing the salts from the soil;
-Hot plasters with perlite (type Dinu Moraru);
-Above the floor were executed holes and the solution with peruse was introduced .
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Achieving holes in the foundation for the
inserting of solution with peruse
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Attempting the method with solution of
peruse
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Replacing the socle stone with concrete socle.
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Deterioration of exterior joinery ; inclined large cracks and vertically to
headers.
Solutions:
- There will be recovered the windows from the basement and holes will be done in the
areas with windows formerly recovered;
- The windows of the old building will be unmounted and replaced with new ones after
the initial model;- All the inferior horizontal parts of the windows will be repaired.
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In the rehabilitation and
consolidation works we must
keep the architectural details
after the initial model.