Development of a cone hood

Development-pattern a one exhaust hood inna di shape a one truncated cone

A - Diameter a di upper base.
D - Bottom base diameter.
H - Height.

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Di calculator allow yuh fi calculate di parameters a one truncated cone. Dis is useful fi calculate exhaust hoods fi ventilation, or an umbrella fi a chimney pipe.

How fi use di calculation.

Indicate di dimensions a di exhaust hood weh yuh know. Click di Calculate button. As a result a di calculation, drawings a di exhaust hood pattern dem generate.
Di drawings dem show di dimensions fi cut a truncated cone.
Side view drawings are also generated.

As a result a di calculation, yuh can find out:

Di angle a inclination a di cone walls.
Cutting angles pan di development.
Upper an lower cutting diameters.
Workpiece sheet dimensions.

Attention. No figet fi add allowances fi di folds fi connect di parts a di hood.