การคำนวณน้ำหนักเหล็ก
Post on 09-Mar-2016
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4' x 8' = mm. x 23.33
3 mm. x 4' x 8' = 3 x 23.33 = 70 kg.
0.9 mm. x 4' x 8' = 0.9 x 23.33 = 21 kg.
5' x 10' = mm. x 36.5
6 mm. x 5' x 10' = 6 x 36.5 = 219 kg.
20 mm. x 5' x 10' = 20 x 36.5 = 230 kg.
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= mm. x cm. x cm. x 0.000785
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12 mm. = 12 x 23 x 38 x 0.000785 = 82 kg.
18 mm. = 18 x 26.7 x 32.6 x 0.000785 = 12.3 kg.
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= mm. x cm. x cm. 2 x 0.000785
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20 mm. = 20 x 46 x 39 2 x 0.000785 = 14.1 kg.
32 mm. = 32 x 33.5 x 16.5 2 x 0.000785 = 6.9 kg.
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= mm. x cm. x cm. x 0.00247
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19 mm. = 19 x 14.5 x 14.5 x 0.00247 = 9.87 kg.
28 mm. = 28 x 17.5 x 17.5 x 0.00247 = 21.2 kg.
* cm
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=(R - r ) x mm x 0.00247
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25 mm. = (14.5 - 7 ) x 25 x 0.00247 = 161.25 x 25 x 0.00247
= 10 kg.
* cm
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= mm. x mm. x 0.0471
12 mm. = 240 x 12 x 0.0471 = 135.6 kg.
4.5 mm. = 125 x 4.5 x 0.0471 = 26.5 kg.
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=(A + B - 2 x mm) x mm x 0.0471
6 mm. = (60 + 75 - 2 x 6) x 6 x 0.0471 = (135 - 12) x 6 x 0.0471
= 123 x 6 x 0.0471
= 34.8 kg
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=(A + 2B - 4 x mm) x mm x 0.0471
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8 mm. = (220 + 2 X 115 - 4 x 8) x 8 x 0.0471 = (220 + 230 - 32) x 8 x 0.0471
= 418 x 8 x 0.0471
= 157.5 kg
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=(A + 2B + 2C - 8 x mm) x mm x 0.0471
4.5 mm.
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= (175 + 2 X 65 + 2 X 20 - 8 x 4.5) x 4.5 x 0.0471 = (175 + 130 + 40 - 36) x 4.5 x 0.0471
= 309 x 4.5 x 0.0471
= 65.5 kg
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= mm x 0.006167 x m.
130 mm. = 130 x 0.006167 x 4.6 = 479 kg
225 mm. = 225 x 0.006167 x 2.45 = 765 kg
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= ( mm - mm) x 0.006167 x m
= (432 - 365 ) x 0.006167 x 2.78 = 915 kg
= (160 - 140 ) x 0.006167 x 5.55 = 205 kg
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