Today, the use of new technologies in the construction industry is one of the main requirements in construction. During the last decade, the use of lightweight aerated concrete blocks (AAC-Heblex) instead of traditional materials and walls, due to having suitable parameters in compliance with the provisions of the 19th and 18th sections of the National Building Regulations, lightness (specific weight between 400 and 600 kg per cubic meter) As a result, the reduction of gravity and lateral forces (reduction of consumable materials) as well as long-term resistance to fire is considered one of the new and effective approaches in construction, so that currently there is less evidence of the use of previous traditional methods and the use of brick walls or There are other methods.
In the topic of strengthening buildings against earthquakes, attention has always been given to the safety of the entire structure and the non-collapse of the building after severe earthquakes. However, in the earthquake of 2016 in Sarpul Zahab (Kermanshah), it was observed that buildings built according to standard 2800, at the average level of the earthquake, suffer major non-structural damage, which makes it difficult to service the building during and after the earthquake. Porcelain in the form of a block, complying with all the requirements of the sixth appendix of the 2800 standard, including the implementation of reinforcements, beam and column angles, bed and fastening bars, etc., in addition to the need for great precision in design and implementation, the increase in the finished cost per square meter according to It will be accompanied, and unfortunately, at present, fewer buildings fully comply with these details. In this respect, its responsibility will definitely be with the civil and architectural supervisors and executives.
One of the methods recommended in Standard 2800 and Publication 326 of the Program and Budget Organization is to use panels instead of blocks to implement the internal and external walls of the building. In this method, while increasing the execution speed and more suitable seismic performance panel compared to the block) there is no need to implement the criteria of the above-mentioned instructions. Also, in very important buildings such as hospitals and medical centers, the use of panel system is emphasized.
