● U-dumper dị ala karịa dumper nwere otu nhazi ahụ, na-eme ka nkwụsi ike nke ịnya ụgbọ ala na nchekwa.
● The barycenter dị mfe karịa dumper nwere otu nhazi nke dị irè ibu.
● Site n'usoro pụrụ iche, ọ nwere ike ibutu ngwa ngwa na ngwa ngwa.
● Chekwa otu taya taya otu afọ wee chekwaa mmanụ ụgbọala 2-5L kwa 100km.
● Na-anabata ihe owuwu polygonal na-ehulata nke na-ewusi gwongworo ahụ ike.