Bir-guluubka

Birta fidsan Faa'iidooyinka muhiimka ah waxaa ka mid ah awood aad u wanaagsan saamiga miisaanka oo keenaya iska caabbinta caabbinta miisaan ka hooseeya marka loo eego baararka fidsan ama xaglaha.
Cidhifyada wareegsan ee astaanta birta fidsan waxay ka dhigan tahay inaan loo baahnayn wax shiidi ka hor rinjiyeynta, kaydinta wakhtiga iyo lacagta inta lagu jiro abuuritaanka. Burburinta rinjiga iyo dhisidda burburka wasakhaysan ayaa sidoo kale la dhimay, taasoo kordhinaysa waxqabadka nolosha.

Cabirka magaca ah (mm)			Dhererka tirada /cutubka
b×t×h	r1	r
80×6×20	4	≤2	4.88
100×7×22.5	4.5	≤2	6.86
100×8×23.5	4.5	≤2	7.65
120×6×23	5	≤2	7.32
120×7×24	5	≤2	8.26
120×8×25	5	≤2	9.2
140×7×26	5.5	≤2	9.75
140×8×27	5.5	≤2	10.85
140×10×29	5.5	≤3	13.05
160×7×29	6	≤2	11.46
160×8×30	6	≤2	12.72
160×9×31	6	≤2	13.97
160×11×33	6	≤3	16.49
180×8×33	7	≤2	14.8
180×9×34	7	≤2	16.22
180×10×35	7	≤3	17.63
180×11×36	7	≤3	19.04
200×9×37	8	≤2	18.57
200×10×38	8	≤3	20.14
200×11×39	8	≤3	21.71
200×12×40	8	≤3	23.28
220×10×41	9	≤3	22.77
220×11×42	9	≤3	24.5
220×12×43	9	≤3	26.22
240×10×44	10	≤3	25.5
240×11×45	10	≤3	27.39
240×12×46	10	≤3	29.27
260×10×47	11	≤3	28.35

Cabirka magaca ah (mm)			Dhererka tirada /cutubka
b×t×h	r1	r
260×11×48	11	≤3	30.39
260×12×49	11	≤3	32.43
280×11×51	12	≤3	33.5
280×12×52	12	≤3	35.7
280×13×53	12	≤3	37.9
300×11×54	13	≤3	36.7
300×12×55	13	≤3	39.09
300×13×56	13	≤3	41.44
320×12×58	14	≤3	42.6
320×13×59	14	≤3	45.09
320×14×60	14	≤4	47.6
340×12×61	15	≤3	46.2
340×13×62	15	≤3	48.86
340×14×63	15	≤4	51.5
370×13×66.5	16.5	≤3	54.7
370×14×67.5	16.5	≤4	57.6
370×15×68.5	16.5	≤4	60.5
400×14×72	18	≤4	63.96
400×15×73	18	≤4	67.1
400×16×74	18	≤4	70.2
430×14×76.5	19.5	≤4	70.6
430×15×77.5	19.5	≤4	73.9
430×17×79.5	19.5	≤4	80.7
430×19×81.5	19.5	≤4	87.4
430×20×82.5	19.5	≤4	90.8
Fiiro gaar ah: Dhererka la heli karo waa 6m-20m, iyo darajo waa A, B, D, AH32, AH36, DH32 iyo DH36, fadlan nala soo xiriir shuruudaha kale.