Difference between revisions of "Cone bottoms for tanks"
(Created page with "==This is a draft page for JamsRL's scrutiny.== Forget the hole in the top for the time being so, to find length of sloping side ‘L’ Base dia ‘D’ = 570mm (typical for a ...") |
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| − | ==This is a draft page for JamsRL's scrutiny.== | + | {{WIP}} |
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| + | ==This is currently a draft page for JamsRL's scrutiny.== | ||
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| + | [[File:Conebottom1.png]] | ||
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Forget the hole in the top for the time being so, to find length of sloping side ‘L’ | Forget the hole in the top for the time being so, to find length of sloping side ‘L’ | ||
| + | |||
Base dia ‘D’ = 570mm (typical for a 205 litre steel drum, but check before proceeding) hence base radius ‘R’ is half this = 285 | Base dia ‘D’ = 570mm (typical for a 205 litre steel drum, but check before proceeding) hence base radius ‘R’ is half this = 285 | ||
Desired angle ‘a’, say = 45° | Desired angle ‘a’, say = 45° | ||
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L= R/Cos a | L= R/Cos a | ||
| − | L= 285/Cos 45 | + | L= 285/Cos 45 (Cos being Cosine, available on many calculators or the internet) |
| − | (Cos being Cosine, available on many calculators or the internet) | + | '''L = 403mm''' |
| − | L = 403mm | + | |
To address the hole in the top, use the same formula but substitute the diameter of the fitting you want to use for the base diameter, say 30mm | To address the hole in the top, use the same formula but substitute the diameter of the fitting you want to use for the base diameter, say 30mm | ||
| − | Hence if | + | Hence if D = 30, R will = 15 |
| + | |||
l = 15/Cos 45 | l = 15/Cos 45 | ||
| − | l = 21.2mm | + | '''l = 21.2mm''' |
We are aiming for this shape to roll into the cone, | We are aiming for this shape to roll into the cone, | ||
| + | [[File:Conebottom2.png]] | ||
| + | so we need to know the angle between the two edges (b°). | ||
| + | We’ve already calculated L, 403mm. | ||
| + | We know the outer arc length (x) is the same length as the circumference as the drum so we can calculate this using the formula C = π x d, where C is the circumference of the circle | ||
| − | + | TO BE CONTINUED! | |
Revision as of 22:44, 21 January 2012
 This page is Work In Progress and therefore may not be complete.
|
This is currently a draft page for JamsRL's scrutiny.
Forget the hole in the top for the time being so, to find length of sloping side ‘L’
Base dia ‘D’ = 570mm (typical for a 205 litre steel drum, but check before proceeding) hence base radius ‘R’ is half this = 285 Desired angle ‘a’, say = 45°
L= R/Cos a L= 285/Cos 45 (Cos being Cosine, available on many calculators or the internet) L = 403mm
To address the hole in the top, use the same formula but substitute the diameter of the fitting you want to use for the base diameter, say 30mm Hence if D = 30, R will = 15
l = 15/Cos 45 l = 21.2mm
We are aiming for this shape to roll into the cone,
so we need to know the angle between the two edges (b°).
We’ve already calculated L, 403mm.
We know the outer arc length (x) is the same length as the circumference as the drum so we can calculate this using the formula C = π x d, where C is the circumference of the circle
TO BE CONTINUED!
