The city of
Lima located on the coasts of the ocean and belonging to the ring of fire of
the Pacific; It has a high probability of a high intensity earthquake, in Lima
lives a third of the population of Peru, due to the high concentration of
people, low-rise housing and low cost are very common, the 70% of the houses in
Lima are of masonry. The seismic code recommends buildings with this system and
gives us values of their results to be able to use them. The Pandereta brick is
a type of masonry that was created for partitions for rooms because they are
lightweight and low cost.
Some people of
low-income use these bricks to build their homes, some of which are self-built without
engineering because those materials are not adequate to resist an earthquake.
The
retrofitting of masonry walls of homes is a method which is rarely used due to
the high price in the structural evaluation. In this research, experimental
wall data is used, and the typical distribution of a two-level house is used.
To obtain better
values, three models were analyzed. The first analysis one is the housing
without retrofitting; the second analysis is with all walls retrofitted and the
third is in the housing with 50% of the total walls retrofitted. With three
points we interpolate the percentage of retrofitting of the house.
Keywords: Masonry housing, performance point, retrofitting, and steel mesh