Outrigger beam (thrustout) means the structural member of a suspension scaffold or outrigger scaffold that 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 in a building?
Outriggers increase the stiffness of buildings by means of converting the lateral forces into push (compression) and pull (tension) forces in the perimeter structures.
What can be used to stabilize outrigger beams?
Outrigger beams which are not stabilized by bolts or other direct connections to the floor or roof deck must be secured by tiebacks. Suspension scaffold support devices such as cornice hooks, roof hooks, roof irons, parapet clamps, or similar devices must be secured against movement by tiebacks.
What is core and outrigger structural system?
Outrigger structural system is an interior lateral load resisting system that is located within the interior of the building. It consists of a core structure connected to the perimeter columns of the building by means of structural members called outriggers.
What is crane outrigger?
Outrigger: A beam which extends from the lower works of a crane to increase the crane’s stability. The beams may be either extendible/retractible or fixed length and typically utilize some type of pad to distribute loads to the ground surface. ( Source: A Glossary of Common Crane and Rigging Terms.
How much weight can a scaffold support?
As this language makes clear, in applying section 1926.451(a)(1), each component of a scaffold must be able to support its own weight, plus 4 times the total maximum intended load on that component.
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 are three types of scaffolds?
Workers who use scaffolds can be divided into three groups:
- Suspended Scaffolds.
- Supported Scaffolds.
- Aerial Lifts.
What are outrigger systems?
The outrigger systems are lateral loads resisting systems that can effectively minimize the lateral loads and strengthen tall buildings. In this system, the external and the internal structure couple as a whole to resist lateral loads.
What is outrigger roof?
The outrigger is part of the house, usually incorperating the kichen area, that comes out at 90 degrees to the main building. The roof will have a valley where it meets the main house, if you had a birds eye view of your house it would be L shaped.
What is an outrigger on a truck?
Outriggers keep your truck stable during any kind of lift by extending outward and making contact with the ground several feet away from the truck. This provides a solid, stable base by distributing the crane’s load over a larger area. Types of outriggers.
What is outrigger load?
The outrigger load is specific to the amount of force applied to any one of the outriggers during set-up, operations and tear down of the equipment. To ensure safety, DICA believes the rated capacity of the pads should always exceed the maximum outrigger reaction force of the equipment.
Why are outriggers used?
Mainly used in deep sea trolling, outriggers are a pair of long poles fitted on both sides of a boat that holds fishing lines away from the boat.Generally, outriggers improve the chances of a fish striking because not only does it allow the angler to cover more ocean space, it also permits the use of multiple lines.
What is the purpose of outriggers?
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 maximum span on scaffold planks?
The maximum allowable size for the wide face of a 2” x 10” plank is 50 mm or 17⁄8”. For 2” x 12” planks the maximum is 60 mm or 23⁄8”.
Scaffold Planks.
| Topic: Scaffold Planks | Issued by: VP WorkSafe Services |
|---|---|
| Statute: General Regulation 91-191 | Date Issued: December 4, 2008 |
| Paragraph: 128(a) | Date Revised: |
Can you not work on a scaffold until?
Employees are not permitted to work on those construction or facility surfaces until it has been determined that the surfaces have the requisite strength and structural integrity to support the workers.
What is the leading cause of scaffold accidents?
Scaffolding accidents mainly involve people falling, incorrect operating procedures, environmental conditions and falling materials due to equipment failure. Additionally, major scaffold failure occurs due to overloading of scaffolding.
What is a bridle in scaffolding?
A bridle is a feature used to bridge openings. A vertical inside tube crossing the opening is attached to the scaffold by a transom, and a horizontal crossing tube on the outside called a bridle tube. The gaps between the tubes and the structure surfaces are packed or wedged with timber sections to ensure a solid fit.
What is transom in scaffolding?
Transoms are the transverse horizontal load bearing members of the scaffold. Made from two lengths of 50mm X 50mm angle iron welded back to back forming an inverted “T” section with banana transom ends assemble at each end.
What is a putlog as used in scaffolding?
The ‘putlog’ is a component that links the wall and the ledger together. This method of scaffolding derives from old masonry techniques where they used a hole in a wall of a structure to ‘put the log’. A putlog scaffold is tied directly into the brickwork of a structure using putlogs or tubes with putlog adapters.
What are the four main types of scaffolds?
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.
Contents