Ke kila kahawai maʻamau
He ʻāpana kila lōʻihi ke kila kahawai me ka ʻāpana ʻauwaha. Hōʻike ʻia kona kikoʻī ma nā millimeters o ke kiʻekiʻe o ka pūhaka (H) * ka laulā o ka wāwae (b) * ka mānoanoa o ka pūhaka (d). No ka laʻana, ʻo 120 * 53 * 5 e hōʻike ana i ke kila kahawai me ke kiʻekiʻe o ka pūhaka he 120 mm, ka laulā o ka wāwae he 53 mm, a me ka mānoanoa o ka pūhaka he 5 mm, a i ʻole 12# kila kahawai. No ke kila kahawai me ke kiʻekiʻe like o ka pūhaka, inā he nui nā laulā wāwae a me nā mānoanoa o ka pūhaka, e hoʻohui pū ʻia ʻo a, B a me C ma ka ʻaoʻao ʻākau o ke kumu hoʻohālike, e like me 25A #, 25B #, 25C #, a pēlā aku.
Ua māhele ʻia i ke kila kahawai maʻamau a me ke kila kahawai māmā. ʻO ke kikoʻī o ke kila kahawai maʻamau i ʻōwili wela ʻia he 5-40#. ʻO ke kikoʻī o ke kila kahawai palupalu i ʻōwili wela ʻia i hāʻawi ʻia ma o ka ʻaelike ma waena o ka mea hoʻolako a me ka mea kūʻai aku he 6.5-30#. Hoʻohana nui ʻia ke kila kahawai i ka hoʻolālā hale, ka hana ʻana i nā kaʻa a me nā hale ʻoihana ʻē aʻe. Hoʻohana pinepine ʻia ke kila kahawai me ka I-beam.
Hoʻokumu ʻia ke kila kahawai maʻamau ʻole ma ke kiʻekiʻe o ka pūhaka, ka laulā o ka wāwae, ka mānoanoa o ka pūhaka a me ke kaumaha no kēlā me kēia mika o ke kila kahawai. ʻO ke kumu nui o ia mea ʻo ka mālama ʻana i ke kumukūʻai me ka ʻole o ka hoʻopilikia ʻana i ka palekana a me ka maikaʻi, a me ka hoʻēmi ʻana i ke kiʻekiʻe, ka laulā a me ka mānoanoa. No ka laʻana, ʻo ke kaumaha o ke kila kahawai 10a# he 10.007kg no ka mika a he 60.042kg no 6m. Inā he 40kg ke kila kahawai 10a# maʻamau ʻole 6m, kapa mākou iā ia ʻo ka ʻokoʻa haʻahaʻa o 33.3% (1-40 / 60.042).
