Outrigger beam (Thrustout)means the structural member of a suspension scaffold or outrigger scaffold which provides support for the scaffold by extending the scaffold point of attachment to a point out and away from the structure or building.
What is an outrigger scaffold?
outrigger scaffold means a supported scaffold that consists of a platform resting on outrigger beams (thrustouts) projecting beyond the wall or face of the building or structure, with inboard ends secured inside the building or structure; Sample 1.
What type of scaffold is considered a suspended scaffold?
Suspended scaffolds are platforms suspended by ropes, or other non-rigid means, from an overhead structure. Because two-point scaffolds are the most common type of suspended scaffold, this eTool uses the Two-Point module to describe requirements that apply to all suspended scaffolds.
What is the type of scaffold that are usually supported on outriggers at the roof?
Scaffolding eTool Supported scaffolds consist of one or more platforms supported by outrigger beams, brackets, poles, legs, uprights, posts, frames, or similar rigid support.What is a structural scaffold?
scaffold, in building construction, temporary platform used to elevate and support workers and materials during the construction, repair, or cleaning of a structure or machine; it consists of one or more planks of convenient size and length, with various methods of support, depending on the form and use.
What is a suspended scaffold?
A suspended scaffold incorporates a suspended platform capable of being raised or lowered when in use. Other terms often used are ‘suspended cradle’ and ‘swing-stage’ scaffold. They are typically prefabricated modular units (see Figure 1) or permanently fabricated units although they can be assembled from scaffolding.
What is an outrigger used for?
Outriggers are long poles that are fitted on both sides of a boat and are designed to hold fishing line. They allow you to reel in and release your fishing line via a system of pulleys and clips. Outrigger poles are available in many different lengths ranging from 12 to 35 feet.
What is the most common type of suspended scaffold?
Two-point adjustable suspension scaffolds, also known as swing-stage scaffolds, are perhaps the most common type of suspended scaffold.What are supported 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 are the four main types of scaffolds?- Independent Scaffolding:
- Single Scaffolding:
- Double Scaffolding:
- Needle Scaffolding:
What are the requirements for suspension scaffolds?
Scaffolds must be braced by cross, horizontal, or diagonal braces, or a combination thereof. Scaffolds must be plumb, level, and squared. All brace connections must be secured. Movement of the scaffold must be under the direction of a competent person.
Are suspended scaffolds supported from the ground?
No. A hanging scaffold is a “temporary work platform without support from below, secured to an overhead structure using fixed length rigid suspension members” while a suspended scaffold utilizes non-rigid suspension members.
What are different types of scaffolding?
- Single scaffolding. Single scaffolding stands parallel to a wall of a structure by using vertical supports called standards. …
- Double scaffolding. …
- Cantilever scaffolding. …
- Suspended scaffolding. …
- Trestle scaffolding. …
- Steel scaffolding. …
- Patented scaffolding. …
- Wooden and bamboo scaffolding.
What is scaffolding in construction used for?
Scaffolding, also known as staging, is a temporary provisional framework used in construction sites to provide support to the buildings’ original structure. At the same time, it acts as a platform for the crew to perform construction work in heights or areas that they could not otherwise access.
What are the vertical members of a scaffold called?
The key elements of the scaffolding are the standard, ledger and transoms. The standards, also called uprights, are the vertical tubes that transfer the entire weight of the structure to the ground where they rest on a square base plate to spread the load.
Does scaffolding work in construction?
Scaffolding is installed at the very beginning of any construction project or maintenance work. It is a temporary platform that offers support, elevation, and enables workers to carry materials and conduct their work during the construction process; this can include, but is not limited to, repairs and cleaning.
What is outrigger structure?
Outriggers are typically horizontal structures (usually trusses or reinforced concrete walls) inserted into buildings at various levels to tie the concrete core to the outer (or perimeter) structural framework.
What is core and outrigger structural system?
The outrigger structural system is a lateral load resisting system in which the external peripheral columns are tied to the central core with very stiff outriggers and belt truss at or more levels. … The outrigger acts as a stiff arm engaging outer columns and central core.
Why do people have one outrigger?
A single outrigger canoe is a canoe with only one outrigger fitted to it. The single outrigger is attached to the main hull of the boat usually on the left side. The purpose of this is to aid the canoe’s stability. The position of the paddler is always on the opposite side of the outrigger to avoid capsizing.
What is suspended scaffolding in construction?
Suspended Scaffolds (also called hanging scaffolds) are work platforms that hang from overhead support structures on roofs or building setbacks. … All workers on suspended scaffolds must complete scaffold-specific training.
What is the most common supported scaffold?
Fabricated frame scaffolds are the most common type of scaffold because they are versatile, economical, and easy to use. They are frequently used in one or two tiers by residential contractors, painters, etc., but their modular frames can also be stacked several stories high for use on large-scale construction jobs.
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.
What do aerial scaffolds include?
- Extendable boom platforms,
- Aerial ladders,
- Articulating (jointed) boom platforms,
- Vertical towers, and.
- Any combination of the above.
What is slung scaffold?
Slung scaffold This type of scaffold is suspended from the main structure in one position using wire ropes or steel chains. It is similar to birdcage scaffold but has the advantage of leaving a clear space beneath the platform.
What is the required safety factor for suspension lines used with suspended scaffolds?
For temporary suspended scaffolds used in construction and general industry, the safety factor must be at least 6; that is, the suspension line must be 6 times stronger than the load you are placing on it.
Which type of scaffold is not adjustable and Cannot raise or lower workers?
Float Scaffold The braced platform is placed on two parallel bearers. This platform cannot be adjusted for different heights.
What are the 2 types of scaffolds?
There are three 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 nonrigid, overhead support.
How many types of scaffolding are there in construction?
The scaffolding may be a single type (putlog scaffolding), as shown in fig. 3. or double type (independent scaffolding), as shown in Fig. 4. In the former type, needles are projected from Opening or through holes in the wall to support the standards.
What are 5 requirements for scaffolding?
- Start with training. …
- Follow the instructions. …
- Consider the hazards. …
- Use a tagging system. …
- Inspect and re-inspect.
Which of the following is allowed for accessing a scaffold?
Scaffold platforms that are more than two feet above or below a point of access must be accessed using ladders; ramps; walkways; integral prefabricated scaffold access; or direct access from another scaffold, structure, personnel hoist, or similar surface. Workers can’t use scaffold crossbraces to access a platform.
Who should design a scaffold?
Scaffold Design Scaffolds must be designed by a qualified person. Tube and coupler scaffolds over 125 feet in height must be designed by a registered professional engineer. Tube and coupler scaffold design must comply with 29 CFR §§ 1926.451–. 452.
