Restoration, conservative interventions and seismic safety measures “Casa Zeccherj”

Posted in Historical Goods Recovery

Arch. Anna Maria Iannini – Dott.ssa Augusta Iannini

The restoration work was applied to an historical building, dated back to the XV century, which was recognized as historically interesting by the presence of value architectural elements. The building was deeply devoted by the 2009 earthquake, which affected also the town of L’Aquila.
The bearing structure of the building is made by an assembly of stones with different size and consistency, tied up by rough mortar. A few stretches display a coherent brick or stone frame. Ceiling horizontal structures are made with various techniques and materials, ranging from wood to iron, that can be referred to the different historical changes of the building itself.
It is noteworthy the presence of barrel vaults, cross vaults and pavilion vaults inside the ground floor.

Regeneration of wall connections

On the basis of the directional project, the old plaster layer was completely removed, to bring all the damages out and establish all the points to fix them by carrying out a sewing up intervention.
All the empty spaces come up by the first cleaning work were filled up by injections of water lime-based mortar.

Wall prestress

Horizontal piped bars were placed for a total length of 302 meters, and the bolted end-plates were put up in window and door cavities, to avert any possible damage to architectonical elements.
The bolted end-plates rely on mortar pads and the piped bars were tested for a total weight of 13.800 kg.

Vault consolidation

After a previous underpinning, every vault of the building was lightened by ripping out the overhanging floors and by the removal of filling material.When the wall surface was brought out, the damages were fixed by carrying out a sewing up intervention, followed by injections of water lime-based mortar and the application of one direction carbon fiber bands.Eventually, after placing light filling material, the underpinning structure was removed and safety bands were applied.
Stiff ceilings

Ceilings were reinforced by a couple of steal stiff structures.The first one, which disparts the ground floor from the first one, was realized with a continuous horizontal frame made out metal, fixed to the wall by metal piped trimmers sealed with epossidic resin.

The second steal structure propping the ceiling is placed under the roof and it is made with the same technique of the other one (horizontal continuos frame and metal trimmers).
Both the frames are connected with a steal ribbon placed between the facial plaster, in correspondence to the vaults.
Frames are pivoted catching a few of steal bars inside pierced points and sealing them with epossidic resin.