According to Channel New Asia , Lian Yak Building was designed by a unqualified draftman instead of professional architect , investigator found that he had under - estimated the dead weight which the columns and walls could support .
According to Channel New Asia , Lian Yak Building was designed by a unqualified draftman instead of professional architect . 
 Investigator found that he had under - estimated the dead weight which the columns and walls could support .