What is a catenary scaffold?
What is a catenary scaffold?
A catenary scaffold is a scaffold consisting of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building or other structure.
What are the basic types of scaffolds?
There are two basic types of scaffolds:
- Supported scaffolds, which consist of one or more platforms supported by rigid, load- bearing members, such as poles, legs, frames, outriggers, etc.
- Suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support.
What is the most common type of supported scaffold?
frame scaffolds
Scaffolding » Supported Scaffolds Because frame scaffolds are the most common type of supported scaffold, this eTool uses the frame module to describe requirements that are common to all supported scaffolds.
What does an interior hung suspension scaffold consists of?
An interior hung suspension scaffold consists of a platform suspended from the ceiling or roof structure by fixed-length supports. For requirements that apply to all types of suspended scaffolds, please refer to the Two-point (swing stage) module.
What is the maximum load for a catenary scaffold?
500 pounds
A catenary scaffold is a scaffold consisting of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building or other structure. Catenary scaffolds have a maximum intended load of 500 pounds, and no more than two employees are permitted on the scaffold at one time.
What is a scaffold’s maximum intended load?
“Maximum intended load” is defined in 29 CFR 1926.450 as: [T]he total load of all persons, equipment, tools, materials, transmitted loads, and other loads reasonably anticipated to be applied to a scaffold or scaffold component at any time.
What is the strongest scaffolding?
Of these scaffolding types, the strongest and most durable are tube and coupler also known as pipe scaffolding. As you might expect these are built from pipes connected by coupling. They are easily configured to maximize the loads they can carry.
What is a cantilever scaffold?
Cantilevered scaffolding is a form of scaffolding that is usually used to overcome obstacles that prevent a scaffolding tower being erected, or reduce the chances or damage occurring to the structure beneath the cantilevered area.
What is the maximum weight load of a catenary scaffold?
A catenary scaffold is a scaffold consisting of a platform supported by two essentially horizontal and parallel ropes attached to structural members of a building or other structure. Catenary scaffolds have a maximum intended load of 500 pounds, and no more than two employees are permitted on the scaffold at one time.
At what height must a scaffold be supported to help prevent tipping?
The standard requires employers to protect each employee on a scaffold more than 10 feet (3.1 m) above a lower level from falling to that lower level.
When using scaffolds make sure there is?
6. Get specialized training before working on scaffolds, lifts or ladders. 7. When using scaffolds, make sure there is proper access, full planking, stable footing and guard railing.
When using a catenary scaffold a personal fall?
Fall Protection Requirements:
| Type of Scaffold | Fall Protection Required |
|---|---|
| Catenary scaffold | Personal fall-arrest system |
| Crawling board (chicken ladder) | Personal fall-arrest system, or a guardrail system, or a ¾ inch (1.9 cm) diameter grabline or equivalent handhold securely fastened beside each crawling board |
How tall is a N gauge catenary support?
Look at the prototype and examine photographs to see how supports are arranged. On straight track maximum spacing is 73m, 0.49m (19.5inches) in ‘N’ gauge. A more typical spacing is 63m, 0.42m (17inches). Supports are closer on curves and by points. Contact wire height is typically 4.1m (13ft 6in), maximum is 5m (16ft 6in).
What kind of wire is used for catenary?
14 Catenary Cabe (by others) 18 Stainess Stee Cabe or Tether Structura Mountin o Catenary Cabe (by others) 1038 Catenary Cabe (by others) 2 1 4 Stainess Stee -Bot Wire Camp (38) 5 Stainess Stee -Bot Wire Camp (14) 6 7 IN OT 3 6 Sa Poer Cor an Quic Connect incue ith ixture Speciy Poer Cor enth (PCL) Catenary Suspension
What are the register arms on a catenary?
Register arms are used to hold the contact wire in place. Above them are the support pulleys from which the support wire is hung. In some situations, typically in yards or station approaches where speeds are low, register arms and support pulleys are combined into a single unit.
What do you need to know about catenary support?
Environmental conditions such as ice, wind and corrosion effects should also be evaluated for each installation. When stainless steel cable connects more than one fixture body together, this is considered a catenary support and should be evaluated by a structural engineer.