Complex sentence: Long before the collapse, on 12 January, a Japanese construction consultant, Hiroshi Kudo, had recommended specific measures for installing the temporary poles for the scaffolding, and that load tests for the piling should be carried out in accordance with international standards and codes.
Split into simpler sentences: Long before the collapse, on 12 January, a Japanese construction consultant, Hiroshi Kudo, recommended some specific measures for installing the temporary poles for the scaffolding. He recommended that the load tests for the piling should be carried out in accordance with the international standards and codes.