Snáithe Scriú d | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||||
P | páirc | Snáithe garbh | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | ||
Snáithe fíneáil-1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||||
Snáithe fíneáil-2 | / | / | / | 1 | 1.25 | / | / | / | ||||
b | L≤125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 | |||
125<L≤200 | / | / | 28 | 32 | 36 | 40 | 44 | 52 | ||||
L>200 | / | / | / | / | / | / | 57 | 65 | ||||
c | nóim | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |||
da | Foirm A | uas | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | ||
Foirm B | uas | 6.2 | 7.4 | 10 | 12.6 | 15.2 | 17.7 | 20.7 | 25.7 | |||
dc | uas | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |||
ds | uas | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |||
nóim | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||||
du | uas | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 22 | |||
dw | nóim | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |||
e | nóim | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |||
f | uas | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |||
k | uas | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |||
k1 | nóim | 2 | 2.5 | 3.2 | 3.6 | 4.6 | 5.1 | 5.8 | 6.8 | |||
r1 | nóim | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |||
r2 | uas | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.2 | |||
r3 | nóim | 0.1 | 0.1 | 0. 15 | 0.2 | 0.25 | 0.3 | 0. 35 | 0.4 | |||
r4 | ≈ | 3 | 3.4 | 4.3 | 4.3 | 6.4 | 6.4 | 6.4 | 8.5 | |||
s | uasmhéid = méid ainmniúil | 8 | 10 | 13 | 15 | 16 | 18 | 21 | 27 | |||
nóim | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | ||||
t | uas | 0. 15 | 0.2 | 0.25 | 0.3 | 0. 35 | 0. 45 | 0.5 | 0.65 | |||
nóim | 0. 05 | 0. 05 | 0.1 | 0. 15 | 0. 15 | 0.2 | 0.25 | 0.3 |
Cén fáth go bhfuil sé heicseagánach, ní eile?
Beidh ceist den sórt sin ag go leor daoine, cén fáth ar chóir an bolt a dhearadh i gcruth heicseagánach?Agus ní daoine eile?Is éard atá i heicseagán táirge comhréitigh idir fad taoibh agus uillinn chasáin.
Maidir le boltaí le fad taobh corr, níl an dá thaobh den eochair comhthreomhar.Ina theannta sin, sna laethanta tosaigh, ní raibh ach sreanga forked ann, agus bhí an chuid is mó de na cinnirí sreang múnlaithe trumpa, agus mar sin ní raibh na rinsí oiriúnach do ghiniúint cumhachta.Ina theannta sin, is fachtóir tábhachtach é an uillinn casadh freisin.Más ceithre choirnéal é, is gá an eochair a iompú 90 céim chun na scriúnna a shocrú, atá neamhfhabhrach le suiteáil i spás caol;Má tá sé ochtagánach nó decagonal, cé go n-éiríonn an uillinn casadh níos lú, tá an fórsa beag freisin, agus tá sé éasca a bhabhta.
Dá bhrí sin, is rogha coitianta é cruth heicseagán do boltaí.