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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 Watchroom
35 feet 9 1/2 inches
 
Diameter of Tower at the Top (Lantern Room) 
16 feet
 
Focal Plane Height 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 Iron Spiral Steps
194
 
Diameter of Tower at the Base (Exterior)
28 feet
 
Diameter of Tower at First Level (Interior)
12 feet
 
Thickness of Walls at First Level Level 
8 feet thick
 
Number of Granite Steps Leading Into Tower
9
 
Diameter of Tower at Ground Level (Including Granite Coping)
32 feet
 
Diameter of Octagonal Tower Foundation
38 feet
 
Diameter of Octagonal Tower Foundation at Base (Underground)
45 feet
 
Depth of Foundation Below Ground
12 feet