Kawa maʻamau
ʻO ke kila kanal he kaula kila lōʻihi me ka ʻāpana ʻāwīwī.Hōʻike ʻia kona kikoʻī ma nā millimeters o ke kiʻekiʻe o ka pūhaka (H) * ka laulā wāwae (b) * ka mānoanoa pūhaka (d).No ka laʻana, ʻo 120 * 53 * 5 ka mea e hōʻike ana i ke kaula hao me ke kiʻekiʻe o ka pūhaka o 120 mm, ka laulā wāwae o 53 mm, a me ka mānoanoa pūhaka o 5 mm, a i ʻole 12 # ke kila.No ke kila kanal me ke kiʻekiʻe pūhaka like, inā he nui nā laula wāwae ʻokoʻa a me nā mānoanoa pūhaka, e hoʻohui pū ʻia a, B a me C ma ka ʻaoʻao ʻākau o ke kumu hoʻohālike, e like me 25A #, 25B #, 25C #, etc.
Hoʻokaʻawale ʻia ia i ke kila awāwa maʻamau a me ke kila awāwa māmā.ʻO ka kikoʻī o ke kila kaila maʻamau i ʻōwili ʻia ʻo 5-40 #.ʻO ka kikoʻī o ke kila hoʻoheheʻe wela wela i hāʻawi ʻia ma o ka ʻaelike ma waena o ka mea hoʻolako a me ka mea kūʻai aku ʻo 6.5-30 #.Hoʻohana nui ʻia ke kila Channel i ke kūkulu hale, ka hana kaʻa a me nā hale ʻoihana ʻē aʻe.Hoʻohana pinepine ʻia ke kila Channel me I-beam.
Hoʻokumu ʻia ke kila kanal maʻamau ma luna o ke kiʻekiʻe o ka pūhaka, ka laulā wāwae, ka mānoanoa pūhaka a me ke kaumaha o kēlā me kēia mika.ʻO ia ka mea nui e mālama i ke kumukūʻai me ka ʻole e pili ana i ka palekana a me ka maikaʻi, a me ka hoʻemi ma ke kiʻekiʻe, ākea a me ka mānoanoa.No ka laʻana, ʻo ke kaumaha o 10a# channel kila he 10.007kg no ka mika a me 60.042kg no 6m.Inā he 40kg ka 6m non-standard 10a# channel, kapa mākou iā ia i ka ʻokoʻa haʻahaʻa o 33.3% (1-40 / 60.042).
