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Steel Erection

Steel Erection. Construction Safety Council. Construction Safety Council by David G. Allie. Steel Erection. Subpart R - Steel Erection (1926.750 - 753). Tiered buildings not adaptable to temporary floors - Safety nets. Tag lines to control loads.

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Steel Erection

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  1. Steel Erection Construction Safety Council

  2. Construction Safety Council by David G. Allie Steel Erection

  3. Subpart R - Steel Erection(1926.750 - 753) Tiered buildings not adaptable to temporary floors - Safety nets Tag lines to control loads Skeleton steel erection - Tightly planked & substantial floor Construction Safety Council

  4. 1926.760 - Fall protection Construction Safety Council

  5. (a)General requirements (1)Anyone over 15 feet, except in (a)(3) (2)Fall protective systems shall conform to 1926.502. (3)Connectors and employees working in controlling decking zones protected from fall hazards as provided in (b) and (c) of this section. Construction Safety Council

  6. (b)Connectors (1)Protected when more than two stories or 30 feet above a lower level; (2)Complete connector training in accordance with 1926.761; and (3)Provided with fall arrest or fall restraint systems when 15’ to 30’ above a lower level. Construction Safety Council

  7. 1926.755 - Anchor bolts (a)General requirements for erection stability (1)Columns anchored by a min. of 4 bolts and designed to resist a 300# eccentric load at 18” from the column face. (2)Columns set on level finished floors, pre-grouted leveling plates, leveling nuts, or shim packs. (3)Unstable columns shall be evaluated by a competent person. Construction Safety Council

  8. (b)Repair, replacement or field modification (1)Need approval of the project structural engineer. (2)Approval shall state whether guying or bracing is necessary. (3)Controlling contractor shall provide written notification to the steel erector. Construction Safety Council

  9. Plumbing-up • Equipment: • turnbuckles • properly secured • secured to prevent unwinding • placed so employees can get to connection points • removed only under the supervision of a competent person Construction Safety Council

  10. 1926.752 Site layout, site-specific erection plan and construction sequence Construction Safety Council

  11. (a) Approval to begin steel erection • ASTM standard test method (concrete must be 75% of the minimum compressive design strength): footings, piers, walls • Repairs, replacements and modifications to anchor bolts made in accordance with 1926.755(b) Construction Safety Council

  12. (b) Site layout (controlling contractor shall provide): • Adequate access • A firm, properly graded, drained area, readily accessible for the safe storage of materials and the safe operation of equipment Construction Safety Council

  13. (c) Overhead protection • Pre-planned to ensure that no employee is required to be exposed to overhead hazards in accordance with 1926.753 (b) and 1926.759 Construction Safety Council

  14. (d) Site-specific erection plan • Developed by a qualified person • Available at the work site • Use guidelines contained in Appendix A Construction Safety Council

  15. Construction Safety Council 1926.756 - Beams and columns

  16. Construction Safety Council (a)General. Secured with at least two bolts per connection. (b)Diagonal bracing. With bracing, secured by at least one bolt per connection. (c)Double connections at columns and/or at beam webs over a column. At least one bolt or similar connection device is present.

  17. Construction Safety Council (d)Column splices. Designed to resist a 300# eccentric load located at 18” from column face. (e)Perimeter columns. Must extend a min. of 48” above the finished floor for safety cables.

  18. (c) Multiple lift rigging procedure Construction Safety Council

  19. (1) Multiple lift shall only be performed if the following are met: • multiple lift rigging assembly is used; • maximum of five members is hoisted per lift; • only structural members are lifted; and • employees engaged in the lift have been trained in the procedures in 1926.761 (c)(1) Construction Safety Council

  20. (4)The multiple lift rigging assembly shall be rigged with the members: rigged at least 7 feet apart rigged from the top down attached at their center of gravity and maintained level Construction Safety Council

  21. (2)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. Capacity must be certified by the manufacturer or a qualified rigger and have a 5 to 1 safety factor Construction Safety Council

  22. (3) The total load shall not exceed: • The rated capacity of the hoisting equipment • The rigging capacity (4) The multiple lift rigging assembly shall be rigged with the members: • attached at their center of gravity and maintained level; • rigged from the top down; and • rigged at least 7 feet apart Construction Safety Council

  23. (5)The members on the multiple lift rigging assembly shall be set from the bottom up. (6)Controlled load lowering shall be used whenever the load is over the connectors. Construction Safety Council

  24. Structural Steel Assembly Construction Safety Council

  25. Shear Connectors and Other Similar Devices

  26. 1926.753 - Hoisting and rigging(Supplement to the requirements of 1926.550) Construction Safety Council

  27. (a) General (1) Pre-shift visual inspection of cranes: • all control mechanisms for maladjustments • excessive wear of components and contamination by lubricants or other foreign matter • safety devices • pressurized lines for leakage • hooks and latches • wire rope • electrical apparatus • hydraulic system • tires • ground conditions • hoisting equipment Construction Safety Council

  28. (a)(1)(iv) The employer shall obtain and/or prepare a certification record of the pre-shift inspection (a)(1)(v) The operator shall be responsible for those operations under the operator’s direct control Construction Safety Council

  29. (a) General (2)Qualified rigger to inspect the rigging prior to each shift (3) Headache ball not used to transport personnel (4) Only use of personnel platforms in accordance with 1926.550 (g) Construction Safety Council

  30. (5)Safety latches on hooks shall not be deactivated except: • when hoisting can be performed more safely; or • qualified rigger provides equivalent protection and is included in a site-specific erection plan Construction Safety Council

  31. 1926.760 - Fall protection (e)Custody of fall protection. Fall protection shall remain in an area to be used by other trades if controlling contractor: (1)Has directed the steel erector to leave the fall protection in place. (2)Has inspected and accepted control and responsibility of the fall protection prior to authorizing persons to work in the area. Construction Safety Council

  32. (b) Working under loads (1)Routes for suspended loads shall be pre-planned (2)When working under suspended loads, the following must be meet: • materials rigged to prevent unintentional displacement; • self-closing safety latches shall be used; • all loads rigged by qualified riggers. Construction Safety Council

  33. 1926.761 - Training (a)Training personnel. Provided by a qualified person(s). (b)Fall hazard training. Include instruction in the following areas: (1) Recognition and identification (2) Use and operation of systems. (3) Correct procedures for erecting, maintaining, disassembling, and inspection of protective systems. (4) Procedures to be followed to prevent falls. (5) Fall protection requirements of 1926.760. Construction Safety Council

  34. (c) Special training programs (1) Multiple lift rigging procedure (2) Connector procedures (3) Controlled decking zone procedures Construction Safety Council

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