Ob chav chaw nres nkoj ob chav valve hluav taws kub hydrant
Lub chaw nres nkoj ob npaug ob txoj kab hluav taws xob yog hom dej tua hluav taws hauv tsev." Txoj Cai rau Kev Tiv Thaiv Hluav Taws Kub Tsim ntawm Cov Tsev Tsim Kho Muaj Tshav Siab Zoo" stipulates tias: hauv cov xwm txheej hauv qab no, thaum nws yog qhov nyuaj rau teeb tsa ob lub raj hluav taws xob ntsug, ib lub raj xa hluav taws xob tuaj yeem tsim tau, tab sis ob chav li qub thiab ob npaug tawm yuav tsum tau siv hom hydrant.
1. Chav tsev ntawm 1 8 plag tsev thiab hauv qab;
2 Ntau lub tsev ntawm 18 cov plag tsev thiab hauv qab, txhua chav tsev tsis siab tshaj li {{{2}} cov yim neeg, thiab cov chav ua haujlwm tsis ntau dua 650 m {{4} }.