2. The new lou should be subjected to a load test, and the opening of the measuring lou should not exceed 0.25% of the original opening.
3.During use, check whether the lou is cracked or severely deformed, corroded and worn.
4. ʻO kaloupono e hoʻāʻo ʻia i hoʻokahi manawa i ka makahiki. I ka wā o ka hoʻāʻo, e lawe i kahi hōʻike kūpaʻa o 1.25 mau manawa i ka hana i ʻae ʻia no 10 mau minuke, a nānā me kahi aniani hoʻonui a i ʻole nā ʻano hana ʻē aʻe. ʻAʻole pono e loaʻa nā māwae, nā māwae a me ke koena koena.
5. Pono e hoʻomaʻemaʻe i nā ʻāpana weliweli ʻekolu me ka ʻaila māla. E hoʻohana i kahi aniani hoʻonui e ʻike ai inā he mau māwae. No ka pālous, e nānā i nā nāhelehele a me nā pine no ka lole.
6. Defects on the lou shall not be repaired.