Leḥsab n yisuḍaf ɣef yiɣil n lqeḍyan

Leḥsab n lqis n usqif n useklu s yiɣil n lqeḍra

Ttxil sken-d lqidar ilaqen s milimitren.

X - Tiɣzi n uldi n tesraft
Y - Taɣzi n tesraft
Z - Tewri n usliẓri
C - Amḍan n isurifen
W - Taɣect n usurif
F - Aɛeddi n isurifen
T - Taɣect n usɣar n lqerṣ neɣ n usɣar
H - Sken-d imesnekren
LR - Tama n tesga.
SP - amḍiq n usurif amezwaru s lmendad n uswir n lqaɛa n lqaɛa tis snat.


Tizemmar n wahil.

Leḥsab n yiwen n usenfar yelhan n tmeẓdiyin n useklu ɣef tmeẓdiyin n tmeẓdiyin.
Asenqed n tmerna n ttawilat i ilaqen.
Imeẓla n tɣawsiwin s tɣawla n wakk iḥricen.
Iḍrisen d tfelwiyin n tfelwit n wakk iferdisen n tfelwit.
Rekomendasiyen i lfayda n tesraft.

Leḥsab n tmeẓẓuɣt n tmeẓẓuɣt yettwaḥseb s useqdec n tfelwit i d-yesbedden tuɣzi n tmeẓẓuɣt.
Tiɣzi n tfekka n umdan tella gar 60 ar 66 cm, s tlemmast n 63 cm.
Asslaḍ igerrzen yettemcabi ɣer talɣa: 2 n teɣziwin n yisuḍaf + Lqedd n usurif = 63±3 cm.

Asenqes n tmeẓdiyin i d-yettawin lxir akk d win n 30° ar 40°.
Ilaq lqedd n tfelwiyin n tfelwiyin ad yili d win i d-yettawin lqidar n tceṭṭiḍt 45 - ur d-yettili ara ddaw n 28-30 cm.
Lexṣaṣ n telqi yezmer ad yettwaxelleṣ s tmeẓẓuɣt n tmeẓẓuɣt.
Ilaq ad yaweḍ lqedd n tmeẓẓuɣt alamma d 20-25 cm.