10.A: Review Questions
Complete as directed.
Fill in the Blanks:
- In general, each scaffold and scaffold component shall be capable supporting, without failure, its own weight and at least times the maximum intended load applied or transmitted to it.
- In general, each platform on all working levels of scaffolds shall be or decked between the front uprights in the guardrail supports.
- The front edge of all platforms shall not be more than ________ inches from the face of the work, unless guardrail systems are erected along the front edge and/or personal fall arrest systems are used.
- Each platform greater than 10 feet in length shall not extend over its support more than ________ inches, unless it is designed and installed so that the cantilevered portion of the platform is able to support employees without tipping, or has guardrails which block employee access to the cantilevered end.
- Scaffold components manufactured by different manufactures shall not be ________ unless the components fit together without force and the scaffold's structural integrity is maintained by the user.
- Guardrail systems shall be capable of withstanding, without failure, a force of at least ________ pounds (890 N) applied within ________ i nches (5.1 cm) of the top edge, in any outward or downward direction, at any point along the top edge.
- Cross braces on tubular Weldon frame scaffold ________ be used as a means of access or egress.
- Only ________ person(s) shall operate an aerial lift.
- In addition to wearing ________ each employee on a scaffold shall be provided with additional protection from falling hand tools, debris, and other small objects through the installation of toeboards, screens, or guardrail systems, or through the erection of debris nets, catch platforms, or canopy structures that contain or deflect the falling objects.
- Scaffolds shall be erected, moved, dismantled, or altered only under the supervision and direction of a ________ qualified in scaffold erection, moving, dismantling or alteration. Such activity shall be performed only by experienced and trained employees selected for such work by the competent person.