same shall be not less than 4 in. in diameter at butt and 2½ in. at tip.
Where practicable, standards must be embedded in the ground, or
otherwise made solid at the foot to the satisfaction of the Inspector.
Ledgers shall be of timber not less than 6 in. by 2 in., or the equivalent thereof, or if poles are used they shall not be less than 3½ in. diameter, and shall be tied or bolted to the standards at spaces of not more than 6 ft. apart. The first ledger may be fixed at not more than 10 ft. from the bottom.
Putlogs shall be of approved timber. Where the span does not exceed 5 ft. in the clear the size shall not be less than 3 in. by 3 in., spaced not more than 6 ft. apart, and shall have not less than 4½ in. bearing in wall. All putlogs shall, where practicable, be securely wedged in position at the wall, and securely fastened to the ledger. Only alternate putlogs may be removed from the lower stages until the scaffolding is finished with; where it is not practicable to wedge putlogs every alternate ledger shall be secured to wall by hoop-iron ties every 10 ft.
Scaffolding-boards shall be of sound timber, and not less than 8 in. wide and 1½ in. thick, laid butting or lapping; but where lapped the laps shall be not less than 9 in.
All working-stages shall have fender-boards not less than 1 in. thick, carried from the floor to the height of any loose material that may be stacked on the working-stage, and securely fixed to standards.
There shall also be a guard-rail fixed not less than 3 ft. high, of timber not less in strength than 3 in. by 2 in., lashed or bolted to standards. Openings through guard-rail and fender-board shall be allowed alongside landings only.
Bracing shall be not less than 4 in. by 2 in. Poles or other approved timber may be used and placed to the Inspector's satisfaction.
Scaffolding shall be secured by manila rope not less than 1¾ in. in circumference and 18 ft. long, or by bolts not less than ½ in. in diameter fitted with washers, with stronger bolts to satisfaction of Inspector according to the height and type of scaffold. All lashings shall be kept properly wedged and bolts properly tightened up.
Where an external scaffolding is to be used for plasterers' work only, the standards may be spaced not more than 10 ft. apart, ledgers to be not less than 4 in. diameter butt and 2½ in. taper end, or 4 in. by 3 in. or 6 in. by 2 in., and spaced to suit the particular class of work, such spacing to be to the satisfaction of the Inspector. Bracing shall be not less than 4 in. by 2 in.

INTERNAL SCAFFOLDING FOR BRICKLAYERS AND CONCRETE-WORKERS.

7. Internal scaffolding for bricklayers and concrete-workers shall be constructed in a similar manner to the external scaffolding and with timber of similar sizes. Trestles approved by the Inspector may be used in place of standards up to 20 ft. in height.
   The standards may be dispensed with when the internal or division walls form sufficient bearing for ledgers. The distance between such bearing shall not exceed 8 ft.

INTERNAL SCAFFOLDING FOR PLASTERERS, PAINTERS, AND OTHER WORKERS NOT OTHERWISE PROVIDED FOR.

8. (1.) Where the height of the scaffolding intended for the use of plasterers, painters, and other workers not otherwise provided for exceeds 16 ft., such scaffolding shall be constructed of standards of not less than 4 in. diameter at the butt end, 2½ in. at taper end, or 4 in. by 3 in. if other approved timber, placed not more than 9 ft. apart; ledgers to carry the platform of scaffolding shall be 6 in. by 2 in. if sawn timber; if of round timber they shall be of similar size to the standards, bolted to standard with bolts not less than ½ in. in diameter fitted with washers, or properly secured with 1¾ in. manila rope. Scaffolds of 16 ft. and under shall be erected with standards or trestles to the satisfaction of the Inspector.
   (2.) Trestles, step-ladders, or easels passed by the Inspector, and fitted with an approved appliance to prevent spreading or closing, may be used in place of standards.

SCAFFOLDING FOR CARPENTERS AND OTHER WORKERS (EXCEPT PLASTERERS AND BRICKLAYERS) ON TIMBER-FRAMED BUILDINGS.

9. All scaffolding for such workers shall be erected according to the following specifications, namely: Standards up to 20 ft. in height to consist of not less than 4 in. by 2 in. timber; beyond this height