Are the Twin Peaks Improvement Association and Midtown Terrace Homeowners Association opposed to digital television?
No. We are extremely concerned about the structural and seismic integrity of Sutro Tower, its ability to withstand the stresses associated with hoisting a 12 ton antenna upon its 25 year old steel frame structure, and the ability of the tower to withstand the strong forces associated with ground shaking during an earthquake. • I heard that the 10 ton antenna is only 1% of the total weight of the tower. Why should that present a problem? Numerous seismic experts and structural engineers have repeatedly explained that the placement of any weight on this structure at or near the top of the tower will be subjected to tremendous vibration during a major earthquake. This could then destabilize or even dislodge the antenna and possibly cause serious damage to the tower itself. These experts have repeatedly advised the City of San Francisco that prior to placing the antenna on the structure, a full dynamic analysis, independently peer reviewed, should be completed prior to hoisting the antenna
