Structural Specifications of Lighthouse Tower

 

Structural Specifications of Lighthouse Tower

Number of Bricks Used: 1.25 million (approx.)

Height of Tower from Base to Tip of Lightning Rod: 188 feet 6 1/2 inches

Height of Tower from Ground Level to Tip of Lightning Rod: 176 feet 6 1/2 inches

Lantern Height from Watch Room: 35 feet 9 1/2 inches

Diameter of Tower at the Top (Lantern Room): 16 feet

Focal Plane (Height of Light above Sea Level): 164 feet 6 inches

Number of Steps from Ground Level to Lantern Room: 213

Height of Gallery Deck Above Ground Level: 140 ft. 9 inches

Number of Steps from Ground Level to Gallery Deck: 203

Thickness of Tower Walls at the Top of the Tower: 1 1/2 feet

Number of Landings on Spiral Staircase: 9

Number of Steps in Spiral Staircase: 194

Materials Used in Spiral Staircase: Cast and Wrought Iron

Number of Windows in Tower (Excluding Lantern Room): 10

Number of Window Panes in Lantern Room: 48

Diameter of Tower at the Base (Exterior): 28 feet

Diameter of Tower at First Level (Interior): 12 feet

Thickness of Walls at First Level: 8 feet

Number of Granite Steps Leading Into Tower: 9

Diameter of Tower at Ground Level (Including Granite Coping): 32 feet

Diameter of Top of Octagonal Tower Foundation: 38 feet

Diameter of Octagonal Tower Foundation at Base (Underground): 45 feet

Depth of Foundation Below Ground: 12 feet