⦁SLB dissipators, when subjected to a seismic shear force, causes said metallic element to leave its elastic range at a fraction of a millimeter and its force/deformation ratio enters the plastic range, this is when energy dissipation is generated.

⦁ A-36 steel has a very ductile behavior, this means that it has a great capacity for deformation in its plastic range without it suffering breakage.

⦁ SLB heatsinks are designed ad-oc for each purpose and each work, so their performance is ensured specifically for each project.

⦁ After the Dissipator is subjected to a first seismic force, it will quickly enter its plastic range, so when it is subjected to a second or successive seismic force, it will act from the first moment, improving its performance.

⦁ In the shaking table test at PUCP, the same structure with the same dissipators was subjected to 6 earthquakes greater than 7.5. In the first earthquake, the devices plasticized. The first three phases increased the acceleration of the 1970 earthquake and the three phases following the 1974 earthquake worked perfectly in the 6 consecutive seismic events. This confirms that the devices will not need to be changed after a severe earthquake. (Conclusion No. 10 of the report Ministry of Housing of Peru)

⦁ On pages 69 and 70 of the report of the Research Project of the Ministry of Housing, you can see the experimental response with dissipators and without dissipators for the last phase, observing that even after 5 seismic events of magnitude greater than 7.5 (and applied at the very base of the structure) worked perfectly without the need for replacement or anything special after 5 earthquakes of magnitude > 7.5 each.

⦁ If we assume that a seismic event >7.5 could have a minimum return period of 50-100 years, the dissipators would have been operational in this case for more than 300-500 years, during which time it is more likely to have other pathologies durability in concrete or other materials.

⦁ These durability results were clearly seen already in 2001 from the tests at ISMES, Italy (one of the largest laboratories in the world) where the same devices were subjected to the Loma Prieta earthquake in the US scaled 5 times to 2.5 times the maximum acceleration of said earthquake greater than 1g, working perfectly in all cases and even better at maximum scaling.

⦁ An ADDITIONAL advantage of SLB dissipators is that they have a double way of dissipating energy so that even after several seismic events >7.5 exhausting the device, it will continue to dissipate energy in its own stiffening frames which would be visually evident from the degradation of “dissipative windows”.

⦁ It is reiterated that both in the tests on a vibrating table in Italy (with more than 5 consecutive earthquakes of magnitude > 7.5) and in the most recent tests in the PUCP (with 6 consecutive earthquakes of magnitude > 7.5) there were no NO evidence of degradation and the same devices in all cases worked perfectly as seen in the attached report and was even better in the last seismic event scaled to maximum accelerations.

⦁ In addition to the above, the SLB devices have been subjected to cyclic tests in prestigious laboratories such as the Federico II University in Naples or the UNAM in Mexico and in all cases their cyclic performance was better than expected with robust and stable hysteresis curves.

⦁ In the case of the structure tested in the PUCP Shaking Table, it was shown that a structure with the characteristics tested would maintain CONTINUOUS FUNCTIONALITY in the face of a very severe earthquake, and therefore hospitals, schools and essential buildings could be designed with this structural system, (Conclusion No. 11 of the report Ministry of Housing of Peru)