Current through Register Vol. 47, No. 12, March 26, 2025
(a) Design requirement. Every material
platform or bucket hoist erected after June 1, 1972 shall be designed by a
professional engineer licensed to practice in the State of New York. The design
plans and specifications for any such hoist shall be kept on the job site
available for examination by the commissioner.
(b) Material hoist towers.
(1) The tower of every material hoist shall
be supported by a firm foundation of such dimensions and area as to adequately
distribute the intended load so as not to exceed the safe load-bearing capacity
of the supporting soil. Tower bracing shall be constructed of such material and
shall be so installed as to secured tower stability and rigidity and to keep
the tower plumb.
(2) Each such
tower shall be secured with guys or rigid braces at each corner at intervals
not to exceed 26 feet vertically. Tower guys shall be at least one-half inch
diameter improved plow steel wire rope and shall be securely fastened to
adequate anchorages with wire rope clips in accordance with Table XVI of this
Subpart.
(3) The erection and
dismantling of any material hoist tower shall be performed only under the
direct supervision of a designated person experienced in this type of work.
Timber hoist towers shall be erected only to a height necessary for the
performance of the work and shall be extended in height only when the
construction work has progressed sufficiently to provide for the anchorages and
bracing heretofore required. Hoist towers constructed of metal shall not be
erected to a height exceeding 50 feet above the highest portion of the
buildings or other structures which may be used as suitable anchorages for
guying such towers.
(4) Hoist
towers shall be so constructed that there shall be at least four feet of
clearance between the lowest point on the circumference of the cathead sheave
and the highest point on the hoisting rope fastening on the car or bucket when
such conveyance is at the uppermost terminal or landing.
(c) Hoistway enclosures.
(1) Interior. Interior hoistways for material
hoists shall be enclosed at every floor level to a height of at least eight
feet on all sides except entrance openings. Such enclosures shall be
constructed of wire mesh of not less than No. 18 U.S. gage steel with openings
which will reject a one-half inch diameter ball or such enclosures shall be
partitions of exterior grade plywood at least three-quarters inch thick, of
wood slats not less than three-quarters inch thick installed horizontally and
spaced not more than two inches apart or of other material of equivalent
strength. Such enclosures shall be adequately supported, braced and
secured.
(2) Enclosed exterior.
When any exterior hoistway for a material hoist is enclosed, such enclosure
shall extend from the lowest terminal points to the cathead elevations on all
sides except entrance openings. Such enclosures shall be constructed of wire
mesh of not less than No. 18 U.S. gage steel with openings which will reject a
one-half inch diameter ball.
(3)
Unenclosed exterior. When any exterior hoistway for a material hoist is
unenclosed, the following requirements shall apply:
(i) Such hoistway shall be enclosed at the
ground or grade level to a height of at least six feet on all sides except
entrance openings. Such enclosure shall be constructed of wire mesh of not less
than No. 18 U.S. gage steel with openings which will reject a one-half inch
diameter ball. Entrance openings of any such hoistway shall be provided with
gates or bars in compliance with this Part (rule) except that sliding bars may
be used in lieu of hinged bars. Such gates or bars shall be kept closed
whenever the car is hoisted.
(ii)
In addition to the enclosure of the hoist car as required by this Part (rule),
each loading side of any such car shall be provided with a self-closing gate at
least 66 inches in height, constructed of the same material as the car
enclosure.
(iii) Where any point on
a moving car or counterweight of a material hoist passes less than eight feet
from a floor, roof, scaffold platform or other work surface or position, such
floor, roof, scaffold platform or other work surface shall be provided with a
partition at least six feet in height. Such partition shall extend horizontally
at least five feet past the horizontal projection of the path of the car or
counterweight. Such partition shall be at least equal in construction to
hoistway enclosures as specified in this Part (rule).
(d) Entrances to hoistways.
(1) All entrances to any hoistway used for
material hoisting above the lowest loading terminal or grade entrance shall be
guarded by substantial gates painted fluorescent orange or yellow. When closed,
such gates shall guard the full width of the entrance openings. The top of each
such gate shall be at least 36 inches in height above the floor surface when
located two feet or more from the hoistway line. Any such gate located less
than two feet from the hoistway line shall be not less than 66 inches in height
above the floor surface. If such entrance gates are constructed with a grille,
wire mesh, lattice or other openwork material, the openings therein shall
reject a ball more than two inches in diameter. Any such gate shall have an
underclearance of not more than two inches. Such entrance gates shall be either
vertical sliding, horizontal sliding or swinging gates. Any swinging gate shall
swing in the direction of egress from the car to the floor.
(2) At the lowest loading terminal or grade
entrance, a wood or metal bar may be used to guard the entrance to a hoistway
used for material hoisting. Such bar shall be painted fluorescent orange or
yellow. Such bar shall be mechanically or electrically interlocked with the
hoist car so that the bar shall be closed and locked before the car can leave
the lowest terminal or grade level and cannot be opened until the car has
returned to such level.
(3) Bars or
pipes shall not be used to guard hoistway entrances at any level or floor above
the lowest terminal or grade level.
(4) Gates at hoistway entrances above the
lowest terminal or grade level shall be kept closed when the car is not at such
entrances.
(e) Car
construction.
(1) Hoist cars used for
material hoisting shall be enclosed from floor to crosshead with solid
enclosures on all sides not used for loading or unloading. Every such hoist car
shall be provided with overhead protection installed at the crosshead to
protect any person from falling objects or materials. Such overhead protection
shall consist of planking at least two inches thick, exterior grade plywood at
least three-quarters inch thick or other material of equivalent
strength.
(2) In lieu of solid
enclosures, hoist cars may be enclosed with expanded metal of not less than No.
9 U.S. gage steel with openings which will reject a one and one-half inch
diameter ball. Such enclosed cars shall also be provided with toeboards at
least four inches in height on all sides except those used for loading and
unloading.
(3) Car platforms shall
be provided with securely fastened blocks and cleats to prevent the rolling of
wheeled vehicles and the shifting of other equipment.
(f) Guide rails. The guide rails of material
hoists shall be constructed of steel or sound, structural grade hardwood
securely fastened at intervals so as not to deflect more than one-quarter inch
during normal operation of the hoist.
(g) Operation of hoist. The operation of any
hoist car, bucket or platform is prohibited whenever persons are climbing the
hoist tower or working on any part of the tower below the cathead.
Exception:The platform, cage, car or bucket may be used
to raise persons for authorized maintenance and repairs that cannot be done
otherwise.
(h) Protection
of operator. The operator of every hoisting machine used with material platform
or bucket hoists shall be provided with overhead protection against falling
objects or materials. Such overhead protection shall be equivalent to tight
planking not less than two inches thick supported to develop its full
strength.
(i) Loading and roping of
platform hoists. The maximum safe capacity of each platform hoist shall be
determined by using a factor of safety of eight. Such maximum safe capacity
shall be posted conspicuously on the crosshead or side members of every such
hoist and such capacity shall not be exceeded.
(j) Thoroughfare. Hoistways for material
hoists shall not be located either partially or wholly over sidewalks,
passageways or other areas to which persons have access unless a broken-rope
safety device is provided for each such hoistway. Such safety devices shall be
capable of stopping and holding the platform or bucket with its rated load.
Such safety device requirement shall also apply to the counterweights of such
hoists, if provided.
(k) Riding.
Riding by any person on a material hoist is prohibited except for necessary
inspection, maintenance and repairs. Signs to that effect shall be posted in
conspicuous locations on both sides of the crosshead or side members and at
every entrance to any such hoist. The legend on every such sign, in letters not
less than one and one-half inches in height on contrasting backgrounds, shall
read as follows:
"WARNING--RIDING BY ANY PERSON
PROHIBITED"
