Payam Javan: The engineer in charge of the Millennium Towers troublesome fix stated on Thursday that the structure had continued to tilt around 3 inches per year since work began.
He also claimed that his team failed to give the fixed contractor any guidance on how to avoid the tower’s sinking and tilting from worsening due to drilling and digging on two sides of the foundation.
City Supervisor Aaron Peskin appeared tired Thursday of holding several hearings over the last five years over the future of the sinking and leaning tower, which is now tilting 26 inches north and west.
Monitoring data shows that during last year’s work on the so-called repair, 10 inches of tilt and around 2 inches of settlement occurred.
For the first time in his statements, Ron Hamburger, the fix engineer, admitted that his team did not provide any initial instructions to Shimmick Construction, the fix contractor, on how to minimize the impact of the drilling and digging to install steel support piles.
Without the correction, the tower’s lean might approach the functional 40-inch maximum in just a few years, Hamburger says, at which point the elevators and plumbing may cease to function. He advised supervisors that the only approach to stop the tilting and maybe reverse some of it immediately is to install 18 steel piles into bedrock.