3240
THE NEW ZEALAND GAZETTE.
[No. 86

(b) The king-leg shall have a centre standard of timber not less
than 10 in. by 10 in. extending the full height, and firmly fish-plated
at junctions, and stiffened at not less than 8 ft. intervals with stays
not less than 4 in. by 2 in. to the corner posts.

(c) The queen-legs shall have a centre standard of timber not
less than 8 in. by 8 in. extending the full height, and firmly fish-plated
at junctions, and stiffened at not less than 8 ft. intervals with stays
not less than 4 in. by 2 in. to corner posts, or, instead of such standard,
shall have a 3 in. wire rope or ¾ in. short-linked chain tightly stretched
between sleeper-plates and sleepers of crane. Sleeper-plates shall be
not less than 9 in. by 9 in., and each centre under the queen-legs shall
have a platform at the bottom formed of 3 in. timber firmly fastened
to sleeper-plates, and loaded with a weight equal to three times the
weight the crane has to lift.

(d) The legs shall be connected by trussed beams and braces of
timber not less than 9 in. by 3 in. to the satisfaction of the Inspector.

(2) A tripod gantry exceeding 100 ft. in height, or designed to
support a steam or other crane, to lift weights over 10 tons and not
exceeding 15 tons, shall be constructed of such heavier timber and in
such manner as the Inspector may direct.

(3) Other gantries (including tripod gantries designed to support
a crane to lift a weight not exceeding 5 tons or a weight exceeding
15 tons) shall be erected as approved by the Inspector.

CRANES AND DERRICKS.

8. (1) All hand cranes, derricks, and similar gear, after erection
   and before being put into use, shall be tested with a load 25 per cent.
   greater than the crane or derrick is designed to raise. The test shall
   be made in the presence of the Inspector. On every hand crane there
   shall be marked clearly the maximum load which it is designed to raise.

(2) Every hand crane which has any timber structural member
shall have the timber stress-bearing members attached to gland-irons
or embedded in metal parts, the latter to be removed or withdrawn
and the various parts examined by the Inspector once every two years
or at such shorter intervals as the Inspector in his opinion may
consider necessary.

(3) Each backstay of any crane shall be loaded with a weight not
less than three times greater than the crane is required to raise, or
shall be anchored to the satisfaction of the Inspector.

(4) All crab-winches and hand-derrick cranes shall be fitted with
efficient pawls and brakes, and the handles shall be kept in position
with nuts, pins, or cotters.

(5) Wheels and pinions shall be keyed up and in correct gear
relation. Where the teeth of wheels and pinions are broken, such
wheels and pinions shall be discarded and replaced; pegs and dove-
tailed teeth shall not be used. No person shall use, and no owner or
person in charge shall permit to be used, a crane on which any tooth
of a wheel or pinion is broken or so worn as appreciably to affect its
efficiency.

(6) All spliced eyes shall be round thimbles and shall have not less
than three full tucks: Provided that approved clips may be used with
the consent of the Inspector.

(7) Where any power-driven crane has been re-erected or re-
anchored, or any stress-bearing part thereof has been replaced since
the date on which such crane was examined and a certificate issued
in accordance with section 32 of the Inspection of Machinery Act,
1928, and such crane has not been tested by an Inspector of Machinery
subsequent to such re-erection, re-anchoring, or replacement, the
Inspector may require the crane before it is put into use to be tested
in his presence with the test load prescribed by the Chief Inspector of
Machinery. The Inspector shall also examine the anchorage and
foundations and satisfy himself that they are of suitable materials, are
secure, and are in all other respects sufficient for the certificated
safe-working load.

(8) Where the Inspector considers that the use of any power-driven
crane is likely to cause danger to any person he shall take such
immediate steps as he may consider necessary to ensure the safety of
such person and report the matter to the Inspector of Machinery.

(9) Single-mast derricks must be provided with four guys.
“Yankee” derricks or similar contrivances shall have not less than
one front guy and two back guys, and such guys shall be securely
attached to the top of derricks and fastened to substantial anchorages.