Cal. Code Regs. Tit. 8, § 1605.5 - Erection
(a) Personnel
engaged in the erection, maintenance, and dismantling of a material hoist shall
be provided with and required to use such appropriate personal protective
devices as set forth in these Orders.
(b) Hoist towers shall be vertically
straight.
(c) Hoist towers shall be
electrically grounded.
(d) The
guide rails of hoists shall be of steel securely fastened, and shall deflect no
more than ¼ -inch under normal operation.
(e) Hoist towers may be used with or without
an enclosure on all sides. However, whichever alternate is chosen, the
following conditions applicable to either, must be met:
(1) When a hoist tower is enclosed it shall
be enclosed on all sides for its entire height with a wire-screen enclosure of
not less than No. 18 U. S. Standard gage wire or equivalent material, with
openings not exceeding ½ -inch mesh, securely fastened to the tower
structure, with openings formed onto each landing.
(2) When a hoist tower is not enclosed, the
hoist platform or car shall be totally enclosed (caged) on all sides, including
the roof, for the full height between the floor and the cage top. The walls of
the cage shall be constructed of ½ -inch mesh of No. 14 U. S. Standard
gage wire or equivalent. The hoist-platform enclosure shall include the
required gates for loading and unloading.
(f) All entrances to hoistways shall be
protected by substantial gates or bars which shall guard the full width of the
landing entrance.
(1) Gates shall be not less
than 66 inches in height and located not more than 4 inches from the hoistway
line with a maximum under-clearance of 2 inches. Gates of grille or lattice or
other open work shall have openings of not more than 2 inches.
(2) Bars shall be not less than 2 by 4-inch
wooden bars or the equivalent, located 2 feet from the hoistway line. Bars
shall be located not less than 36 inches nor more than 42 inches above the
floor.
(3) Gates or bars protecting
the entrances to hoistway shall be equipped with a latching device. Material
hoists serving structures over 70 feet in height, or where the hoist landing
platforms are not clearly visible to the hoist operator, shall be equipped with
a telephone system or an electrical system or both, to assure that all gates or
bars are closed before the hoist platform can be moved.
(g) Hoist towers shall be erected to a height
necessary for immediate needs. However, the tower shall not be extended in
height beyond the designer's recommendations and never more than 66 feet above
the last (highest) guy point.
(h)
An enclosure of No. 18 U. S. Standard gage wire mesh or equivalent material,
which will reject a one-inch steel ball, shall be provided to prevent access
into the space at the bottom of the hoist tower. The enclosure shall extend not
less than 6 feet above the base of the hoist tower.
(i) Positive connections, such as those made
with bolts or pins, shall join the various segments from which assembled towers
are made.
(j) Diagonal bracing, or
the equivalent, shall be placed on each of the four sides of the tower and
between horizontal crossties, except at loading platforms, in which case
bracing of equivalent strength shall be provided.
(k) Hoist towers shall only be erected and
dismantled under the direct supervision of competent personnel.
Notes
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