EARTHQUAKE RESISTANT STRUCTURE

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sismica

 

The cement-bonded wood fibre blocks are laid dry, thereby eliminating the various drawbacks of mortar, and subsequently filled with concrete to create a high load bearing structure. These structural characteristics allow use in first and second category seismic areas.

 

Italy is positioned at the overlap of African and euro-Asian tectonic plates and thus is at high seismic risk. Periodic earthquakes in Italy over the course of history have caused immense damage and innumerable casualties.
Since Isotex began to build in Italy with structural and cement-bonded wood fibre blocks several major earthquakes have occurred.
Following these events, many of our customers have testified to the quality and excellent performance of our construction systems during earthquakes. Houses built with Isotex have withstood these earthquakes without damage.

ISOTEX has always given absolute priority to the static aspect of the walls and floors made ​from their products.

 

Already in 1994 ISOTEX had begun a major collaboration with the University of Bologna to test different Isotex load-bearing walls in the laboratory. Then in 2000, a simulation of an earthquake was carried out with the use of a vibrodyne on a building made ​​entirely of Isotex walls and flooring. Both tests gave optimal results.

 

With the entry into force of new seismic building codes further experiments were carried out on Isotex walls and structures at the renowned Eucentre laboratory, again obtaining excellent results in terms of earthquake resistance.

 

Of the more than 80,000 homes built with Isotex products in Italy since 1984, a significant number have endured earthquakes of great intensity, up to 6 on the Richter scale. These buildings suffered absolutely no damage, not even tiny crack.

Isotex_pag_sismica_guida_ministeriale

 

 

 

 

On 8th August 2011 guidelines were published on the website of the Supreme Council of Public Works as a framework for planners, technicians and competent authorities.

 

MINISTERIAL GUIDELINES

 

SUBJECT

In accordance with Chapter 12 of the Technical Regulations, these Guidelines are intended to provide planners, technicians and competent authorities with theoretical and experimental references and indications for planning and construction in the design and calculation of buildings constructed with load-bearing panel systems based on the use of moulded blocks and lightly reinforced with cast concrete on site.

 

EXPERIMENTAL CHARACTERIZATION

The constructive system must undergo, from a structural point of view, experimental tests of adequate number, according to the Technical Standards in force, in order to demonstrate effective behaviour of load-bearing elements faced with vertical, horizontal and also cyclic stress.

 

TECHNICAL DOCUMENTATION

The manufacturer must prepared and make ​​available the following documentation:

 

 

OPERATIVE ASSEMBLY MANUAL

 

isotex_manuale_montaggio

 

 

 

 

SOFTWARE DI CALCOLO

ISOTEX WALL CHECK SOFTWARE

 

 

Isotex provides structure planners and designers with an indispensable calculation CD to check walling and Isotex’s technical engineers are available for any required consultancy.

 

To know more see the catalogue.

 


WHAT OUR CUSTOMERS HAVE SAID ABOUT ISOTEX SEISMIC SAFETY:

 

s_dichiarazione-terremoto-x-isotex“”From the earthquake in 2012, the building constructed in S. Agostino, in the province of Ferrara, did not suffer any damage whatsoever.”

GIOVANNINA SRL – 2nd JUNE 2012

 

terremoto_abruzzo_lettra-de-iuliis_001““The two buildings were not damaged, demonstrating the effectiveness of the anti-seismic construction system. Several buildings, in our town, built with different systems have been evacuated and declared uninhabitable.”

Il Melograno II SRL – 13th MAY 2009

s_pdf-pizzini-ottimizzato1-1“The buildings made ​​with Isotex blocks, following the earthquake in Bovec (Slovenia), did not suffer any damage and are thoroughly intact, unlike many other buildings that showed evident damage”

PIZZINI A. & SPECOGNA Construction Company – 5th JUNE 2007

 

s_dich-friuli0021“The buildings subjected to the earthquake of Amaro (Italy) with a magnitude of 4.9 degrees on the Richter scale do not show any sign of damage. These buildings were about 24 km from the epicentre”

Surveyor Daffara, legal representative of Daffara Costruzioni – 8th JUNE 2007



VIBRODYNE TEST: DEMOLITION & SEISMIC RESISTANCE

This video presents evidence of the seismic resistance of the ISOTEX building system with a simulated earthquake on a ​​life-size structure made of moulded blocks and flooring panels in ISOTEX cement-bonded wood fibre.

The test, performed at the DISTART (Department of Engineering of Structures, Transport, Water, Measurement and Land) of the Faculty of Engineering of the University of Bologna, was designed to test the behaviour of load-bearing wall structures made ​with​ ISOTEX products.

In the video you can clearly observe the flawless integrity of the structure despite being subjected to the simulation of an earthquake of high intensity.