duct bank demolition

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## PREPARATORY OPERATIONS ## SUBDIVISION T ## DEMOLITION Authority: 40 U.S.C. 3701; 29 U.S.C. 653, 655, 657; and Secretary of Labor's Orders 12-71 (36 FR 8754), 8-76 (41 FR [redacted postal code]), 9-83(48 FR [redacted postal code]), 1-90 (55 FR 9033), 6-96 (62FR 111), 5-2007 (72 FR [redacted postal code]), or 1-2012 (77FR 3912), as applicable. [75 FR [redacted postal code], Aug. 9, 2010; 77 FR [redacted postal code], Aug. 17, 2012; 78 FR [redacted postal code], April 23, 2013] ## §1926.850 Preparatory Operations. - (a) Prior to permitting employees to start demolition operations, an engineering survey shall be made, by a competent person, of the structure to determine the condition of the framing, floors, and walls, and possibility of unplanned collapse of any portion of the structure. Any adjacent structure where employees may be exposed shall also be similarly checked. The employer shall have in writing evidence that such a survey has been performed. - (b) When employees are required to work within a structure to be demolished which has been damaged by fire, flood, explosion, or other cause, the walls or floor shall be shored or braced. - (c) All electric, gas, water, steam, sewer, and other service lines shall be shut off, capped, or otherwise controlled, outside the building line before demolition work is started. In each case, any utility company which is involved shall be notified in advance. - (d) If it is necessary to maintain any power, water or other utilities during demolition, such lines shall be temporarily relocated, as necessary, and protected. - (e) It shall also be determined if any type of hazardous chemicals, gases, explosives, flammable materials, or similarly dangerous substances have been used in any pipes, tanks, or other equipment on the property. When the presence of any such substances is apparent or suspected, testing and purging shall be performed and the hazard eliminated before demolition is started. - (f) Where a hazard e…

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S-15.1 REG 10 ## OCCUPATIONAL HEALTH AND SAFETY, 2020 ## Before demolition begins - 27-2 (1) Before a demolition begins, an employer, contractor or owner shall ensure that: - (a) all chemical or biological substances that may be hazardous to workers during demolition are removed from the structure or the part of the structure that is being demolished; - (b) all glass is removed from the structure or the part of the structure that is being demolished; and - (c) subject to subsection (2), all gas, electrical, telecommunications, sewer and water services connected to the structure or the part of the structure that is being demolished are disconnected. - (2) If power is required for illumination or other purposes, an employer, contractor or owner shall provide a suitably located temporary power service. 31 Dec 2020 c S-15.1 Reg 10 s27-2. ## Stability of adjacent structures - 27-3 If the demolition of a structure may affect the stability of an adjoining structure, an employer, contractor or owner shall ensure that: - (a) the demolition is carried out in accordance with procedures certified in writing by a professional engineer to safeguard the stability of the adjoining structure; and - (b) a copy of the procedures required by clause (a) is kept at the worksite during demolition. 31 Dec 2020 c S-15.1 Reg 10 s27-3. ## Requirements re workers - 27-4 In a demolition, an employer, contractor or owner shall: - (a) appoint a competent supervisor to be in charge of the demolition at all times that the work is in progress; - (b) ensure that all workers or equipment are located clear of any falling material; and - (c) if a worker is or may be present in a building during its demolition, ensure that the demolition is performed floor by floor from the top downward. 31 Dec 2020 c S-15.1 Reg 10 s27-4. ## Demolition procedures - 27-5 In a demolition, an employer, contractor or owner shall ensure that: - (a) dust from the demolition is controlled to the…

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## OCCUPATIONAL HEALTH AND SAFETY, 2020 - (c) any opening or hole in a floor, roof or other surface on which workers are required or permitted to walk or stand is guarded or covered as required by section 9-13; - (d) a free-standing scaffold is used in the demolition of a building shaft from the inside; - (e) steel structures are dismantled column length by column length and tier by tier from the top downward; and - (f) no wall or other part of the structure being demolished is left in an unstable condition or in danger of accidental collapse except during the actual demolition of that wall or part of the structure. 31 Dec 2020 c S-15.1 Reg 10 s27-5. ## Material chutes - 27-6 (1) An employer, contractor or owner shall ensure that a material chute steeper than 45 from the horizontal is constructed to enclose the material placed ° in the chute. - (2) If a material chute presents a danger to workers, an employer, contractor or owner shall ensure that a guardrail is installed around the top of the chute to prevent workers from falling into the chute. 31 Dec 2020 c S-15.1 Reg 10 s27-6. ## Structural members - 27-7 (1) An employer, contractor or owner shall ensure that structural members that are being removed are not under any stress other than the member's own weight and are secured or supported to prevent any unexpected movement. - (2) If a structural member is being hoisted by a crane or other similar lifting device from a structure being demolished or from the demolition rubble, an employer, contractor or owner shall ensure that the hoisting line is in a vertical position and is over the centre of gravity of the load in a manner that will reduce the danger to workers from a swinging or uncontrolled load. 31 Dec 2020 c S-15.1 Reg 10 s27-7. ## Use of powered mobile equipment 27-8 (1) Before powered mobile equipment is placed on a floor, roof or other surface on which workers are required or permitted to walk or stand for the purpose of d…

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- (a) the area designated as such in writing by an engineer before the demolition begins; or - (b) in the absence of a designation under clause (a), the area having its centre at the point of demolition and having a horizontal radius equal to 1 1/2 times the initial height of the project, or portion of the project being demolished. - (2 ) This Section applies to demolition by - (a) a heavy weight suspended by cable from a crane or other hoist; or - (b) a power shovel, bulldozer or other powered mobile equipment. - (3) An employer shall ensure that no person, other than persons directly engaged in the demolition, enters or remains within the demolition zone while the project is being demolished. - (4) Where a swinging weight is used for demolition, an employer shall ensure that the supporting cable is of such length or so restrained that the weight will not swing against any object other than the project being demolished. - (5) Where it is required to prevent the uncontrolled collapse of a project that may endanger a person at or near the workplace, an employer shall ensure that structural components are identified in an adequate manner to ensure the components are not removed inadvertently. - (6) Where an operator of equipment referred to in subsection (2) cannot see where the material from the demolition will fall, the employer shall ensure that a signaller guides the operator. - (7) Where the demolition involves undercutting structural supports, an employer shall - establish an adequate written procedure certified by an engineer for the demolition. Subsection 165(7) added: O.I.C. 2000-130, N.S. Reg. 52/2000; amended: O.I.C. 2013-65, N.S. Reg. 53/2013. [Note: Section 165 effective April 28, 1999.] ## Part 14 - Excavations and Trenches 166 - (1) Where a person may enter an excavation or trench and a wall of an excavation or trench is greater than 1.2 m in height, an employer shall ensure that the wall is supported by adequate shoring or bracing, or that an adequ…