Restoring San Francisco's First Concrete Pier

Plan view of a long rectangular pier structure organized on a column and beam grid. The western portion is largely shown in gray, with relatively few highlighted repairs. Beginning near the middle of the pier, red markings indicating beam and girder repair become increasingly frequent, with the greatest concentration across the eastern half. Additional red repairs run along much of the southern edge.

A tan band along the southern perimeter identifies concrete topping, with intermittent turquoise areas indicating concrete deck slab work. Blue lines indicate perimeter beam repair, while a dashed blue line near the transition between the western and central portions identifies beam strengthening at the west facade. Green outlined circles mark caisson repair locations, which are noted as typical with final locations to be determined. Black square and triangle symbols along the southern edge indicate two types of seawall anchorage. Dashed dark lines represent concrete curb.

The legend identifies the following repair types and symbols: red solid line for beam and girder repair; blue solid line for perimeter beam repair; dark dashed line for concrete curb; turquoise area for concrete deck slab; tan area for concrete topping; black square for Seawall Anchorage Type 1, typical of 30; black triangle for Seawall Anchorage Type 2, typical of 29; green outlined circle for caisson repair, with locations to be determined; and blue dashed line for beam strengthening at the west facade.