putlog

1. (architecture) One of the pieces of timber, or metal, on which the planks forming the platform of scaffolding are supported, one end resting on the ledger of the scaffold, and the other in a hole made in the wall (a putlog hole) for that purpose.Examples: "A common type of scaffold for smaller jobs is a single pole or putlog scaffold which consists of a platform resting on horizontal putlogs (called transoms in independent scaffolds) fixed at 90° to the face of the building (figure 15)."; "The platform in this type of scaffold is supported by putlogs and not transoms."; "Where putlogs are not required to support boards, a putlog must occur within 300mm of each standard. / When bracing is connected to a putlog, the putlog must be connected to a ledger."