Putlog (or Bearer or Transom) : A horizontal member placed in the transverse direction between ledgers, standards, or other supports and used to support a working platform
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}