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Reg. 188
DISHES END PLATES


Complete hemisphere without stays or other support made of one or more plates and subject to internal pressure

The maximum working pressure shall be determined by the following formula : -

W. P. =

(t - 2) x S x J

Eqn.(23)
C x R


where
W.P. is the working pressure in lbs per square inch,

t is the thickness of the end plate in 32nds of an inch,

S is the minimum tensile breaking strength of the end plates in tons per

square inch, or whatever strength is allowed for them,

J is the least percentage of strength of the riveted joints of the plates

forming the hemisphere or securing it to be cylindrical shell,

R is the inner radius of curvature in inches.

C for single riveting is 3.3,

C for double riveting is 2.9,

C for treble riveting is 2.83.
 
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Message from Chairman of Central Boilers Board About Central Boiler Board History of Indian Boiler Regulations Foreword Contents Chapter Wise Contents Regulation Wise List of Amendments
Indian Boilers Act 1923 Ibr Forms Home Search Help Contact Us