Current through Register Vol. 47, No. 12, March 26, 2025
The use of a swinging weight attached to the line of a
crane boom, clamshell bucket, power shovel, bulldozer or any other mechanical
device or equipment for the purpose of demolishing a building or other
structure or any remaining portion thereof shall be in accordance with the
following requirements:
(a) Height
limitation. The building or other structure or any remaining portion thereof
shall be not more than 80 feet in height above the ground, grade or equivalent
surface.
(b) Structural stability.
Walls, chimneys and other parts of any building or other structure shall not be
left unsupported or unguarded in such condition that such parts may fall,
collapse or be weakened by wind pressure or vibration.
(c) Zone of demolition.
(1) Where a swinging weight is used in
demolition operations, a zone of demolition with a radius of at least equal to
one and one-half times the height of the building or other structure or any
portion thereof being so demolished shall be maintained around the points of
impact. Where a swinging weight is used, the supporting cables shall be of such
length or shall be so restrained that it is not possible for the weight to
swing against any other building or structure than the one being
demolished.
(2) Where a clamshell
bucket is being used in demolition operations, a zone of demolition shall be
maintained within 25 feet on both sides of the line of travel of the
bucket.
(3) Where other mechanical
devices or equipment are being used in demolition operations, a zone of
demolition shall be maintained in the area into which the building or other
structure or any portion thereof may fall. Such zone of demolition shall equal
at least one and one-half times the height of the building or other structure
or any portion thereof above the ground, grade or equivalent level.
(4) Only persons essential to the operation
of the demolition devices or equipment shall be suffered or permitted to enter
any zone of demolition.
(5)
Substantial barricades constructed and installed in compliance with this Part
(rule) shall be erected wherever there is likelihood of any person entering a
zone of demolition other than the persons essential for operation of the
demolition devices or equipment.
(6) The controls of any mechanical device or
equipment used in demolition operations shall be located and operated a safe
and reasonable distance from the point of demolition.
