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Certified Safety Construction Worker CW203

Certified Safety Construction Worker CW203. Presented By: Construction Compliance Training Center.

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Certified Safety Construction Worker CW203

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  1. Certified Safety Construction Worker CW203 Presented By: Construction Compliance Training Center This material was developed by Compacion Foundation Inc and The Hispanic Contractors Association de Tejas under Susan Harwood Grant Number SH-20-843-SH0 Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or policies of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsements by the U.S. Government.

  2. This module will provide the information and the necessary tools that you will need in order to recognize the risks associated with the job, you will learn the procedures to control and minimize risks. • You will identify; • Definitions • Subpart  L-  Scaffolds  • Types of Scaffolds • Hazards Associated with • Scaffolds • General Scaffolding  • Requirements • Specific Requirements • Inspections CW203 Scaffold Qualified Person

  3. DEFINITIONS 1926.450(b) It is defined as any temporary elevated platform (supported or suspended) and its supporting structure (including points of anchorage), used for supporting employees or materials or both. CW203 Scaffold Qualified Person

  4. DEFINITIONS 1926.450(b) A person who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them. CW203 Scaffold Qualified Person

  5. DEFINITIONS 1926.450(b) A person who, by possession of a recognized degree, certificate, or professional standing, or who by extensive knowledge, training, and experience, has successfully demonstrated his/her ability to solve or resolve problems related to the subject matter, the work or the project. CW203 Scaffold Qualified Person

  6. DEFINITIONS 1926.451(a)(6) Scaffolds erection shall be evaluated, designed and planned by a qualified person and shall be constructed and loaded with that design. Each project has unique conditions and hazards. This person should use the common sense, good judgment and strong rational bases for the evaluation of his/her design. CW203 Scaffold Qualified Person

  7. Standards: Sub-Part L • CFR 1926.450 – Scope, applications & definitions • CFR 1926.451 – General Requirements • CFR 1926.452 – Additional Specific Requirements • CFR 1926.454 - Training CW203 Scaffold Qualified Person

  8. Standards: Sub-Part L Appendixes: • Appendix A – Scaffold Specifications • Appendix B – (Reserved) Criteria for determining the feasibility of providing safe access and fall protection for scaffold erectors and dismantlers. CW203 Scaffold Qualified Person

  9. Standards: Sub-Part L Appendixes: • Appendix C – List of national consensus standards • Appendix D – List of training topics for scaffold erectors and dismantlers • Appendix E – Drawings and illustrations CW203 Scaffold Qualified Person

  10. Suspension Scaffold • Supported Scaffold • Scaffolding aerial basket • Scaffolding System • Mobile Scaffolding Towers CW203 Scaffold Qualified Person

  11. Hazards Associated with Scaffolds • Falls to a lower level • Collapse of structure • Electrical contacts • Falls on the same level • Falling materials and tools • Blows with fixed objects CW203 Scaffold Qualified Person

  12. Hazards Associated with Scaffolds • Falls to a lower level: • Building and removing the scaffolding incorrectly. • Going up the structure to reach the level of work. • Inadequate fall protection, no safety rails • Incomplete Platforms • Breakage of the work platform. CW203 Scaffold Qualified Person

  13. Hazards Associated with Scaffolds • Collapse of the structure: • The inadequate support surface. • Scaffold support of low resistance materials. • Mooring to the structure, incomplete or insufficient. • Strong winds (plastic covers increases the probability). CW203 Scaffold Qualified Person

  14. Hazards Associated with Scaffolds • Electrical contacts: • Direct or indirect proximity to power lines • High or low voltage either air or on the front. • Power cables for portable electrical extension cords. CW203 Scaffold Qualified Person

  15. Hazards Associated with Scaffolds • Falls on the same level: • Order and cleanliness on the surface of work platforms: • Extension cords on the platform. • Air lines on the platform • Tools on the platform CW203 Scaffold Qualified Person

  16. Hazards Associated with Scaffolds • Falling materials and tools: • Scaffolding collapse. • Unprotected work platform (no toe board) • Rupture of the work • platform. • Incomplete Platform CW203 Scaffold Qualified Person

  17. Hazards Associated with Scaffolds • Blows with fixed objects: • Blows to the head, arms, hips and legs. • Blows with the same scaffold • Blows with fixed structures CW203 Scaffold Qualified Person

  18. 1926.451 General Requirements • 1926.451(a)(6) • Designed by a qualified person and constructed and loaded in accordance with that • design. CW203 Scaffold Qualified Person

  19. 1926.451 General Requirements • 1926.451(b)(1) • Fully planked between front upright and guardrail support CW203 Scaffold Qualified Person

  20. 1926.451 General Requirements • 1926.451(b)(1)(ii) Space between the last plank and the guardrail support no more than 9½” CW203 Scaffold Qualified Person

  21. 1926.451 General Requirements • 1926.451(b)(6) Planks do not support one another CW203 Scaffold Qualified Person

  22. 1926.451 General Requirements • 1926.451(b)(5)(i) • Each end of a platform 10 feet or less in length shall not extend over its support more than 12 inches (30 cm) unless the platform is designed and installed so that the cantilevered portion of the platform is able to support employees and/or materials without tipping. Cantilevered Portion CW203 Scaffold Qualified Person

  23. 1926.451 General Requirements • 1926.451(b)(5)(ii) Each platform grater than 10 feet in length shall not extend over its support more than 18 inches (46 cm) unless the platform is designed and installed so that the cantilevered portion of the platform is able to support employees. Cantilevered Portion CW203 Scaffold Qualified Person

  24. 1926.451 General Requirements • 1926.451(b)(6) On scaffolds where scaffolds planks are abutted to create a long platform each abutted end shall rest on separate support surface. CW203 Scaffold Qualified Person

  25. 1926.451 General Requirements • 1926.451(b)(8) On direction changes, any platform on a bearer at other than a right angle shall be laid first, and platforms which rest at right angles over the same bearer laid second. These planks laid first These planks laid on top CW203 Scaffold Qualified Person

  26. 1926.451 General Requirements • 1926.451(b)(10) Scaffold components manufactured by different manufacturers shall not be intermixed unless the components fit together without force and the scaffold's structural integrity is maintained by the user. CW203 Scaffold Qualified Person

  27. 1926.451 General Requirements • 1926.451(c)(2) Supported scaffolds poles, legs, frames and uprights shall bear on base plates and mud sills or other adequate firm foundation. Base plate Mud sill CW203 Scaffold Qualified Person

  28. 1926.451 General Requirements • 1926.451(c)(2)(ii) Unstable objects shall not be used to support • scaffolds or platform units. CW203 Scaffold Qualified Person

  29. 1926.451 General Requirements • 1926.451(c)(1) Supported scaffolds with a height to base width ratio of more than four to one (4:1) shall be restrained from tipping by guying, tying, bracing, or equivalent means. CW203 Scaffold Qualified Person

  30. 1926.451 General Requirements TOP OF SCAFFOLD PLATFORM AND UPPERMOST TIE NOT TO EXCEED 4 TO 1 RATIO TIE 26’-0” MAX. BETWEEN INTERMEDIATE TIES 4 TIMES MINIMUM BASE TIE AT CLOSEST FRAME HEADER OR BEARER TIE FIRST TIE CLOSEST FRAME HOLDER OR BEARER ABOVE 4 TIMES THE MINIMUM BASE DIMENSION WIDER 3’-0” MINIMUM BASE DIMENSION

  31. 1926.451 General Requirements TOP OF SCAFFOLD PLATFORM AND UPPERMOST TIE NOT TO EXCEED 4 TO 1 RATIO TIE 20’-0” MAX. BETWEEN INTERMEDIATE TIES TIE 4 TIMES MINIMUM BASE TIE AT CLOSEST FRAME HEADER OR BEARER FIRST TIE CLOSEST FRAME HOLDER OR BEARER ABOVE 4 TIMES THE MINIMUM BASE DIMENSION 3’-0” AND NARROWER MINIMUM BASE DIMENSION CW203 Scaffold Qualified Person

  32. 1926.451 General Requirements • 1926.451(c)(1)(ii) • Guys, ties, and braces shall be installed at the closest horizontal member to the 4:1 height. • Guys, ties and braces shall be installed at the end of the scaffold and at horizontal intervals not to • exceed 30 ft. CW203 Scaffold Qualified Person

  33. 1926.451 General Requirements • All ties must be of positive type, they should withstand compression and tension. CW203 Scaffold Qualified Person

  34. 1926.451 General Requirements • 1926.451(e)(2) Additional requirements for the proper construction and use of portable ladders are contained in Subpart X CW203 Scaffold Qualified Person

  35. 1926.451 General Requirements • 1926.451(e)(1) Cross braces shall not be used as a means of access. CW203 Scaffold Qualified Person

  36. 1926.451 General Requirements • 1926.451(e)(1) • When scaffold platforms are more than 2 feet (0.6 m) above or below a point of access, portable ladders, hook-on ladders, or other similar shall be used. • 1926.451 (e)(8) • It is possible to use the stairs of a building and exit for a window when the scaffold is not more than 14 inches horizontally and not more than 24 inches vertically from other surface. CW203 Scaffold Qualified Person

  37. 1926.451 General Requirements • 1926.451(f)(3) Scaffolds and scaffolds components shall be inspected for visible defects by a competent person before each work shift, and after any occurrence which could affect a scaffold's structural integrity. CW203 Scaffold Qualified Person

  38. 1926.451 General Requirements • 1926.451(f)(4) • Any part of a scaffold damaged or defective equipment shall be removed from service. CW203 Scaffold Qualified Person

  39. 1926.451 General Requirements • 1926.451(f)(6)Scaffolds shall not be erected, used, dismantled, altered, or moved such that they are conductive material handled on them might come closer to exposed and energized power lines, minimum distance 10 feet (3.1 m) CW203 Scaffold Qualified Person

  40. 1926.451 General Requirements • 1926.451(f)(16) Platforms shall not deflect more than 1/60 of the span when loaded. CW203 Scaffold Qualified Person

  41. 1926.451 General Requirements • 1926.451(g)(1) • Each employee on a scaffold more than 10 feet (3.1 m) above a lower level shall be protected from falling to that lower level. CW203 Scaffold Qualified Person

  42. 1926.451 General Requirements • 1926.451(g)(1)(i) In some scaffolds it is possible to use a personal fall arrest system (PFAS) in lieu of guardrail system. Scaffold erectors and dismantlers may use a personal fall arrest system (PFAS) when is possible. CW203 Scaffold Qualified Person

  43. 1926.451 General Requirements • 1926.451(g)(2) Effective September 2, 1997, the employer shall have a competent person determine the feasibility and safety of providing fall protection for employees erecting or dismantling supported scaffolds. See appendix B CW203 Scaffold Qualified Person

  44. 1926.451 General Requirements • 1926.451(b)(3); (g)(4)(ii); (iv); (h)(2)(ii) Front edge of all platforms: • Shall not be more than 14 inches (36 cm) from the face of the work, unless guardrail systems are erected Top edge height of Toprails: • 38-45 inches above the platform surface Midrails: • At a height midway between the top edge of the guardrail and the platform. Toeboards: • At least 3-1/2 inches high CW203 Scaffold Qualified Person

  45. 1926.451 General Requirements • 1926.451(h)(1) • Each employee on a scaffold shall be provided with additional protection from falling hand tools, debris, and other small objects CW203 Scaffold Qualified Person

  46. 1926.452 Additional Specific Requirements • 1926.452(c)(5)(iii) Brackets shall be used only to support personnel • 1926.451(c)(1)(iii) Ties, guys, braces, or outriggers shall be used to prevent the tipping of supported scaffolds with an eccentric load CW203 Scaffold Qualified Person

  47. 1926.452 Additional Specific Requirements • 1926.452(c)(3) • Frames and panels shall be joined together vertically by coupling or stacking pins or equivalent means. CW203 Scaffold Qualified Person

  48. 1926.452 Additional Specific Requirements • 1926.452(c)(4) • Where uplift can occur which would displace scaffolds end frames or panels, the frames or panels shall be locked together vertically by pins or equivalent means. CW203 Scaffold Qualified Person

  49. 1926.452 Additional Specific Requirements • 1926.452(c)(5)(iii) Brackets used to support cantilever loads shall: be used only to support personal, unless the scaffold has been designed for other loads by a qualified professional engineer. CW203 Scaffold Qualified Person

  50. 1926.452 Additional Specific Requirements • 1926.452(c)(6) • Scaffolds over 125 feet (38.0 m) in height above their base plates shall be designed by a registered professional engineer, and shall be constructed and loaded in accordance with such design. CW203 Scaffold Qualified Person

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