EARTHQUAKE: SAN FRANCISCO – 68 SF high-rises have potential flaws prone to crack in quake, report says – SFChronicle.com

WE KNOW EARTHQUAKES CAN BE CREATED BY THE USE OF DIRECTED ENERGY. . .

https://www.sfchronicle.com/science/article/68-SF-high-rises-crack-earthquake-which-ones-safe-13418917.php

EXCERPT:

landmark report released recently that evaluates the seismic resiliency of San Francisco’s tallest buildings revealed a disquieting fact.

Dozens of high-rises dotting the city’s skyline — 68 in all — share a set of features that could render them particularly vulnerable when the next major earthquake strikes.

The buildings were all completed between 1964 and 1989, and all have steel skeletons. Beneath the buildings’ skin, the joints connecting the vertical columns and horizontal beams are fused together with a welding technique that experts now know is particularly susceptible to fracture during an earthquake.