That the timbers should fit as evenly as possible, as thereby the whole erection is rendered more stable.
That joints between the runners should occur immediately over the standards.
The several parts of this structure, if for temporary purposes, can be connected by dog irons; if for a more permanent use, by bolts and straps.
Pole Scaffolds
Bricklayers’ Scaffolds.—A bricklayer’s scaffold consists of a series of upright poles or standards, to which are lashed horizontal poles, termed ledgers. The ledgers and the wall of the building carry the putlogs, on which boards are laid to support the workman, his material, and tools ([fig. 13]).
The standards are first erected, and may stand singly or in pairs. In a repairing job, unless of great height, and where there is no great weight of material, single poles are sufficient.
Where double poles are required, the first pair are erected of different lengths.
The short pole is termed a puncheon. The difference of length allows of a lap in connecting the succeeding poles.
The lap should equal half of the full-length pole. The standards are placed 6 to 8 feet apart, and from 4 to 6 feet away from the building.
