Whakatakotoranga:
* Ko te pereti maamaa, he pereti takina ranei he mea whiriwhiri
* E 4, e 6 ranei nga kurupae U me nga kurupae hongere C, he pakari, he pakari
* Kua wehea te waenganui, me te hono raka
* Putau uta kurupae kutikuti rua, pūtau kawenga kōpeketanga ranei
* Te whanui e waatea ana: 3m,3.2m,3.4m
* Te roa Paerewa e waatea ana: 6m~24m
* Max. Te kaha e waatea ana: 30t ~ 200t