EXAMPLE 1-Calculate coating required for a 178' diameter tank 90 ft. high sidewall with a spherical head having a rise of 31.5 ft. above sidewalls when insulated with 6" of insulation. Coverage 6 gallons/100 sq. ft. plus a 20% waste allowance.

Example 1 - Head Area = 2pRhH = 2 x 3.14 x 141 x 32 = 28,335 sq. ft.

Example 1 - Total Area = 50,585 + 28,335 = 78,920 sq. ft.

EXAMPLE 2- Calculate coating required for a 60'6" diameter sphere including legs. Insulation thickness is 4" on sphere and legs, with legs insulated 4 ft. below intersection with sphere. Coverage is 6 gal/`100 sq. ft. with 20% losses. From Table C3, (Sphere Dimensions), determine the size of legs (columns). For this size sphere - 10 legs, 34" diameter.

NOTE: 4' below sphere used other will be almost covered in area.

Related Links:

Coating Estimations - An Overview
Estimating Coatings -Table C1 - Surface Area Formulae for Various Shapes
Estimating Coatings -Table C2 - Coatings Coverage Chart
Estimating Coatings -Table C3 - Standard Sphere Dimensions
Coating Colors as "Signals" - Suggested National Standards
C.A.S. Index - Several Related Tables

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