How to work safely with pre cast tilt up data center construction

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Oregon Occupational Safety and Health Division AO 1-2011 Division 3 - (1) Has directed the steel erector to leave the fall protection in place; and - (2) Has inspected and accepted control and responsibility of the fall protection prior to authorizing persons other than steel erectors to work in the area. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02. OR-OSHA Admin. Order 6-2002, f. 7/19/02, ef. 7/19/02. OR-OSHA Admin. Order 8-2003, f. 12/30/03, ef. 1/1/04. ## 1926.761 Training The following provisions supplement the requirements of 1926.21 regarding the hazards addressed in this subpart. - (a) Training personnel. Training required by this section shall be provided by a qualified person(s). - (b) Fall hazard training. The employer shall train each employee exposed to a fall hazard in accordance with the requirements of this section. The employer shall institute a training program and ensure employee participation in the program. - (c) Special training programs. In addition to the training required in paragraphs (a) and (b) of this section, the employer shall provide special training to employees engaged in the following activities. - (1) Multiple lift rigging procedure. The employer shall ensure that each employee who performs multiple lift rigging has been provided training in the following areas: - (i) The nature of the hazards associated with multiple lifts; and - (ii) The proper procedures and equipment to perform multiple lifts required by 1926.753(e). - (2) Connector procedures. The employer shall ensure that each connector has been provided training in the following areas: - (i) The nature of the hazards associated with connecting; and - (ii) The establishment, access, proper connecting techniques and work practices required by 1926.756(c) and 1926.760(b). - (3) Controlled Decking Zone Procedures. Where CDZs are being used, the employer shall assur…

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Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89. OR-OSHA Admin. Order 6-1991, f. 3/18/91, ef. 4/15/91. <!-- image --> Division 3 AO 1-2003 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (7) The predetermined safe rate of lift shall not be exceeded. - (d) Reinforcing steel. - (1) Reinforcing steel for walls, piers, columns, and similar vertical structures shall be adequately supported to prevent overturning and to prevent collapse. - (2) Employers shall take measures to prevent unrolled wire mesh from recoiling. Such measures may include, but are not limited to, securing each end of the roll or turning over the roll. - (e) Removal of formwork. - (1) Forms and shores (except those used for slabs on grade and slip forms) shall not be removed until the employer determines that the concrete has gained sufficient strength to support its weight and superimposed loads. Such determination shall be based on compliance with one of the following: - (i) The plans and specifications stipulate conditions for removal of forms and shores, and such conditions have been followed, or - (ii) The concrete has been properly tested with an appropriate ASTM standard test method designed to indicate the concrete compressive strength, and the test results indicate that the concrete has gained sufficient strength to support its weight and superimposed loads. - (2) Reshoring shall not be removed until the concrete being supported has attained adequate strength to support its weight and all loads in place upon it. [53 FR [redacted postal code], June 16, 1988, as amended at 61 FR 5510, Feb. 13, 1996] Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89. OR-OSHA Admin. Order 6-1991, f. 3/18/91, ef. 4/15/91.

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## 29 CFR 1926 (OSHA) - (ii) Each employee reaching more than 10 inches (25 cm) below the level of the walking/working surface on which they are working, shall be protected from falling by a guardrail system, safety net system, or personal fall arrest system. NOTE: Bricklaying operations performed on scaffolds are regulated by subpart L-Scaffolds of this part. - (10) Roofing work on Low-slope roofs. Except as otherwise provided in paragraph (b) of this section, each employee engaged in roofing activities on low-slope roofs, with unprotected sides and edges 6 feet (1.8 m) or more above lower levels shall be protected from falling by guardrail systems, safety net systems, personal fall arrest systems, or a combination of warning line system and guardrail system, warning line system and safety net system, or warning line system and personal fall arrest system, or warning line system and safety monitoring system. Or, on roofs 50-feet (15.25 m) or less in width (see appendix A to subpart M of this part), the use of a safety monitoring system alone [i.e. without the warning line system] is permitted. - (11) Steep roofs. Each employee on a steep roof with unprotected sides and edges 6 feet (1.8 m) or more above lower levels shall be protected from falling by guardrail systems with toeboards, safety net systems, or personal fall arrest systems. - (12) Precast concrete erection. Each employee engaged in the erection of precast concrete members (including, but not limited to the erection of wall panels, columns, beams, and floor and roof 'tees') and related operations such as grouting of precast concrete members, who is 6 feet (1.8 m) or more above lower levels shall be protected from falling by guardrail systems, safety net systems, or personal fall arrest systems, unless another provision in paragraph (b) of this section provides for an alternative fall protection measure. Exception: When the employer can demonstrate that it is infeasible or creates a greater hazard to u…

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## III. Wire rope and hardware guidelines - 1. Use only wire rope and attachments as specified by the hoisting machine manufacturer. Do not use wire rope that is kinked, birdcaged, corroded, undersized, or damaged in any way. - 2. Be sure that wire rope is long enough to reach the lowest possible landing. - 3. Clean, lubricate &amp;amp; handle wire rope in accordance with wire rope or hoist manufacturer's instructions. - 4. Coil and uncoil wire rope in accordance with the wire rope or hoist manufacturer's instruction in order to avoid kinks or damage. - 5. Use thimbles at all wire rope suspension terminations. - 6. Use J-type clamps or swaged fittings to fasten wire rope. DO NOT USE U-CLAMPS. - 7. Tighten wire rope clamps in accordance with the clamp manufacturer's instructions. - 8. Wire ropes used in traction hoists must have prepared ends in accordance with the manufacturer's recommendation. - 9. INSPECT WIRE ROPE DURING EACH ASCENT AND DESCENT. Do not expose wire rope to fire, undue heat, corrosive atmosphere, chemicals, to passage of electrical currents, or to damage by tools or handling. ## IV. Power supply guidelines - 1. BE SURE YOUR POWER SUPPLY CONFORMS TO HOIST MANUFACTURER'S RECOMMENDATIONS. - 2. GROUND ALL ELECTRICAL POWER SOURCES and POWER CORD CONNECTIONS. Protect with circuit breakers. - 4. Power cord or air hose connections must be restrained to prevent their separation. - 3. Use power cords or air hoses of proper size that are long enough for the job. - 5. Tie off power cords or air hoses at the suspended scaffold to prevent them from falling. - 6. Protect power cords or air hoses at sharp edges. - 7. Remember, air hoist require clean, lubricated air. ## V. Fall-arrest equipment guidelines - 1. Each person on a suspended powered scaffold must be attached to a fall-arrest system at all times. - 2. Each lifeline must be fastened to a separate anchorage. - 3. When wrapping lifelines around structural members, the lines must be protected and a sui…

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- protected by a safety lifebelt attached to a lifeline. The lifeline shall be securely attached to substantial members of the structure (not scaffold), or to securely rigged lines, which will safely suspend the worker in case of a fall. - 11. Two-point suspension scaffolds shall be securely lashed of the building or structure to prevent them from swaying. Window cleaners' anchors shall not be used for this purpose. - 10. Where acid solutions are used, fiber ropes are not permitted unless acid-proof. ## I. Single-point adjustable suspension scaffolds. - 8. The hoisting machines, cables, and equipment shall be regularly serviced and inspected after each installation and every 30 days thereafter. - 9. The units may be combined to form a two-point suspension scaffold. Such scaffold shall comply with paragraph (g) of this section. - 10. The supporting cable shall be straight for it's entire length, and the operator shall not sway the basket and fix the cable to any intermediate points to change his original path of travel. - 11. Equipment shall be maintained and used in accordance with the manufacturers' instructions, - 12. Suspension methods shall conform to applicable provisions of paragraph (g) and (h) of this section. ## Code of safe practices for suspended powered scaffolds It shall be the responsibility of all employers and users to read and comply with the following common-sense guidelines, which are designed to promote safety in the erection and use of suspended powered scaffolds. These guidelines are not allinclusive, nor do they supplant or replace other additional safety and precautionary measures to cover usual and unusual conditions. If these guidelines conflict in anyway with state, local, or federal statute or governmental regulation, said state statute or regulation shall supersede these guidelines, and it shall be the responsibility of each employer and user to comply therewith and also to be knowledgeable and understand all state, local or fed…

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Oregon Occupational Safety and Health Division Oregon Administrative Rules <!-- image --> Division 3 ## 1926.704 Requirements for Precast Concrete - (a) Precast concrete wall units, structural framing, and tilt-up wall panels shall be adequately supported to prevent overturning and to prevent collapse until permanent connections are completed. - (b) Lifting inserts which are embedded or otherwise attached to tilt-up precast concrete members shall be capable of supporting at least two times the maximum intended load applied or transmitted to them. - (c) Lifting inserts which are embedded or otherwise attached to precast concrete members, other than the tilt-up members, shall be capable of supporting at least four times the maximum intended load applied or transmitted to them. - (d) Lifting hardware shall be capable of supporting at least five times the maximum intended load applied or transmitted to the lifting hardware. - (e) No employee shall be permitted under precast concrete members being lifted or tilted into position except those employees required for the erection of those members. [53 FR [redacted postal code], June, 16, 1988, as amended at 54 FR [redacted postal code], Oct. 5, 1989.] Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89. OR-OSHA Admin. Order 8-1990, f. 3/30/90, ef. 9/1/90. ## 1926.705 Requirements for Lift-slab Construction Operations - (a) Lift-slab operations shall be designed and planned by a registered professional engineer who has experience in lift-slab construction. Such plans and designs shall be implemented by the employer and shall include detailed instructions and sketches indicating the prescribed method of erection. These plans and designs shall also include provisions for ensuring lateral stability of the building/structure during construction. - (b) Jacks/lifting units shall be marked to indicate their rated capacity as established by the manufacturer. - (c) Jacks/lifting un…

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Oregon Occupational Safety and Health Division AO 1-2011 Division 3 - (b) A description of the procedures and work practices that will be used to protect employees from falls and other hazards where it is necessary to walk/work on suspended loads. Employee(s) are allowed on suspended loads only when a competent person has determined that it is the safest way to accomplish a specific task or there is no other way to do the work. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02. ## 1926.753 Hoisting and Rigging - (a) All the provisions of Subpart CC apply to hoisting and rigging with the exception of 1926.1431(a). ## [redacted phone] Tag lines Tag lines shall be used to control loads except when it is determined, by a qualified rigger, that they create a hazard. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 6-2002, f. 7/19/02, ef. 7/19/02. - 1926.753(b) In addition, paragraphs (c) through (e) of this section apply regarding the hazards associated with hoisting and rigging. - (c) General. - (1) Pre-shift visual inspection of cranes. - (i) Cranes being used in steel erection activities shall be visually inspected prior to each shift by a competent person; the inspection shall include observation for deficiencies during operation. At a minimum this inspection shall include the following: - (A) All control mechanisms for maladjustments; - (B) Control and drive mechanism for excessive wear of components and contamination by lubricants, water or other foreign matter; - (C) Safety devices, including but not limited to boom angle indicators, boom stops, boom kick out devices, anti-two block devices, and load moment indicators where required; - (D) Air, hydraulic, and other pressurized lines for deterioration or leakage, particularly those which flex in normal operation;

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- (13) 29 C.F.R. §1926.753(e)(2) is amended to read - as follows: Components of the multiple lift rigging assembly shall be specifically designed and assembled with a maximum capacity for total assembly and for each individual attachment point. This capacity, certified by the manufacturer or a qualified rigger, shall be based on the manufacturer's specifications with a five (5) to one (1) safety factor for all components. The written certification of the components of the multiple rigging assembly by the manufacturer or qualified rigger along with the documentation supporting the certification shall be made available at the site. - (14) 29 C.F.R. §1926.753(e)(4)(i) is amended to read as follows: - The multiple lift rigging assembly shall be rigged with members: Attached at their center of gravity and maintained level such as by the use of tag lines. - (15) 29 C.F.R. §1926.754(b) is amended to read as follows: The following additional requirements shall apply for multistory structures: - (A) The permanent floors shall be installed as the erection of structural members progresses, and there shall be not more than eight stories between the erection floor and the upper-most permanent floor, except where the structural integrity is maintained as a result of the design and is included in the sitespecific erection plan. - (B) At no time shall there be more than four (4) floors or forty-eight (48) feet (14.6 m), whichever is less,

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Division 3 AO 1-2011 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (v) Connections; - (vi) Decking; and - (vii) Ornamental and miscellaneous iron. - (4) A description of the fall protection procedures that will be used to comply with 1926.760. - (5) A description of the procedures that will be used to comply with 1926.759. - (6) A description of the special procedures required for hazardous non-routine tasks. - (7) A certification for each employee who has received training for performing steel erection operations as required by 1926.761. - (8) A list of the qualified and competent persons. - (9) A description of the procedures that will be utilized in the event of rescue or emergency response. - (d) Other plan information. The plan: - (1) Includes the identification of the site and project; and - (2) Is signed and dated by the qualified person(s) responsible for its preparation and modification. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02.

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Division 3 AO 1-2011 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (i) The nature of the hazards associated with work within a controlled decking zone; and - (ii) The establishment, access, proper installation techniques and work practices required by 1926.760(c) and 1926.754(e). [66 FR 5265, Jan. 18, 2001, as amended at 73 FR [redacted postal code], Dec. 12, 2008] Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02. OR-OSHA Admin. Order 6-2002, f. 7/19/02, ef. 7/19/02. OR-OSHA Admin. Order 8-2003, f. 12/30/03, ef. 1/1/04. OR-OSHA Admin. Order 5-2009, f. 5/29/09, ef. 5/29/09. ## [redacted phone] Additional training requirements ## (1) Certification of training. - (a) The employer shall verify compliance with this section by preparing a written certification record. The written certification record shall contain the name or other identity of the employee trained, the date(s) of the training, and the signature of the person who conducted the training or the signature of the employer. If the employer relies on training conducted by another employer or completed prior to the effective date of this section, the certification record shall indicate the date the employer determined the prior training was adequate rather than the date of actual training. - (b) The latest training certification shall be maintained. - (2) Retraining. When the employer has reason to believe that any affected employee who has already been trained does not have the understanding and skill required by this section, the employer shall retain each such employee. Circumstances where retaining is required include, but are not limited to, situations where: - (a) Changes in the workplace render previous training obsolete; or - (b) Changes in the types of fall protection systems or equipment to be used render previous training obsolete; or - (c) Inadequacies in …

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## CAUTION Hazardous Working Environment This equipment is used off the ground in high or dangerous places. Anyone using this equipment is exposed to a hazardous working environment. Users must be properly trained in the use and rigging of this equipment and be familiar with all applicable local, state, and federal codes; safety rules and regulations pertaining to single and two-point suspension scaffolding; general safety and health provisions; and personal protective and lifesaving equipment. The Scaffolding shall be properly assembled according to instructions available from your Spider representative. Guardrails, midrails, and toeboards shall be used as required by local, state, and federal regulations. Their use is recommended in all cases. The working surface shall be level at all times. This equipment should not be used by persons affected by (but not limited to) the following: ill health, not of sound mind or body, under the influence of alcohol or drugs, acrophobia, arachnophobia, epilepsy, fainting spells, suicidal tendency, despondency, or prone to accidents. Safety lines and harnesses shall be used in accordance with federal and state law. Neither the manufacturer nor its distributors can know of, anticipate, or warn against all dangers that exist or can ever arise. Be alert to recognize all dangers, known and unknown. Oil, grease, slippery material, or unstable objects such as barrels, boxes, loose bricks, tools, or debris shall not be allowed to accumulate on work surfaces. Do not use the product if the decking surface is damaged or has deteriorated. Coat wood decking periodically with a wood preservative. Do not paint. Do not place ladders or other devices on the scaffold to gain greater height. Never climb on to stages from a ladder, unless both the stage and the ladder are secured from moving in all directions. Do not use platform to transfer workers. Do not store tools, materials, or equipment on planks or platforms that are being moved. The…

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- materials, and supporting structures such as guardrail system, wall, stanchion, or other suitable anchorage. - (viii) Each line shall have a minimum breaking strength of two hundred (200) pounds [ninety (90) kilograms]. - (ix) Each line shall be rigged and supported in such a way that its lowest point (including sag) is not less than thirty-nine (39) inches (1.0 m) from the walking/working surface and its highest point is not more than forty-five (45) inches (1.3 m) from the walking/working surface. - (x) A painted line on the walking/working surface is not equivalent to control lines and may not be used to demonstrate, define, or mark the boundary of a CDZ. - (xi) A sign or other warning indicator positioned at the entrance to a CDZ is not an equivalent to control lines and may not be used in lieu of control lines or its equivalent. - (xii) Each employee working in a CDZ shall have completed CDZ training in accordance with C.F.R. §1926.761. - (xiii) Each employee working in a CDZ shall have completed CDZ training in accordance with 29 C.F.R. §1926.761. - (xiv) Unsecured decking in a CDZ shall not exceed 3,000 square feet (914.4 m 2 ). - (xv) Safety deck attachments (see definitions) shall be performed in

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## Bracing and supports - 154 (1) An employer at a project shall ensure that - (a) work is completed on any component designed to support or give added support to a part of the project before proceeding with any work that adds to the load on that part; - (b) a free standing wall of brick, concrete blocks or similar materials greater than 2 m in height is braced from both sides until the wall is attached to a rigid structure and the mortar has set adequately; - (c) a free standing wall or structure designed to support roof components or any load is braced in an adequate manner to prevent collapse of the wall or structure; and - (d) a column is erected in an adequate manner to prevent collapse of the column and, where further support is required to ensure that the column does not collapse, braced in an adequate manner. - (2) An employer at a project shall use bracing or shoring for support beneath floor levels where concrete is being poured. - (3 ) An employer at a project shall - (a) ensure that bracing or shoring is designed by an engineer and is erected, maintained and dismantled in accordance with the engineer's certified specifications; or - (b) retain the bracing or shoring at all floor levels beneath the floor where concrete is being poured until the removal of the bracing or shoring is authorized in writing by an engineer. - (4) An employer shall ensure that any bracing or shoring referred to in this Section complies with the latest version of CSA standard CSA S.269.1, 'Falsework for Construction Purposes.' Subsection 154(4) amended: O.I.C. 2013-65, N.S. Reg. 53/2013. - (5) An employer shall ensure that footings for shoring and bracing are designed to support the maximum load likely to be imposed, without excessive settlement or deformation. ## By-stander safety \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

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## Restraining hoses and piping - 188 (1) An employer must ensure that a hose or piping and its connections operating under pressure are restrained if workers could be injured by its movement if it fails or if it is disconnected. - 188 (2) Despite subsection (1), if a hose or piping and its connections operating at a working pressure of 2000 kilopascals or more cannot be restrained, in order to prevent a failure that could injure workers, an employer must ensure that the hose or piping and its connections are designed, installed, used, inspected and maintained - (a) in accordance with the manufacturer's specifications, or - (b) in accordance with specifications certified by a professional engineer. - 188 (3) Subsection (1) does not apply to properly maintained fire hoses used by competent workers. ## Securing equipment and materials - 189 If a worker may be injured if equipment or material is dislodged, moved, spilled or damaged, both the employer and the worker must take all reasonable steps to ensure the equipment or material is contained, restrained or protected to eliminate the potential danger. ## Skeleton structures - 190 (1) An employer must ensure that the erection drawings and procedures for a project that includes connecting the structural parts of a skeleton structure are prepared and certified by a professional engineer. - 190 (2) The erection drawings and procedures referred to in subsection (1) must - (a) show the sequence in which the structure is to be erected, - (b) show the horizontal and vertical placement of base structures and footings, and - (c) ensure that the structure is stable during assembly. - 190 (3) If the erection procedures referred to in subsection (1) must be changed because of site conditions or unanticipated loads on the skeleton structure, the employer must ensure that the changed, additional or alternative procedures are prepared and certified by a professional engineer before they are implemented. - 190 (4) An employer mus…

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the CDZ from the leading edge back to the control line and shall have at least two attachments for each metal decking panel. - (xvi) Final deck attachments and installation of shear connectors shall not be performed in the CDZ. - (xvii) A current and accurate list of employees who are authorized to work in the CDZ shall be maintained at the site. Authorized employees shall further be separately identified such that non-authorized access to the CDZ can be immediately noted and promptly addressed. Employees not authorized to work in the CDZ shall not be permitted to enter the CDZ. - (C) Criteria for fall protection equipment. - (i) Guardrail systems, safety net systems, personal fall arrest systems, positioning device systems, and their components shall conform to the criteria in 29 C.F.R. §1926.502 (see 29 C.F.R. 1926 Subpart R Appendix G. - (ii) Fall arrest system components shall be used in fall restraint systems and shall conform to the criteria in 29 C.F.R. §1926.502 (see 29 C.F.R. 1926 Subpart R Appendix G), except that the anchorages for a fall restraint system shall be capable of supporting at least 3,000 lbs (4.5 kN) per employee attached. Either body belts or body harnesses shall be used in fall restraint systems. - (iii) Perimeter safety cables shall meet the criteria for guardrail systems in 29 C.F.R. §1926.502 (see 29