What is the maximum load for a ladder Jack scaffold?
The maximum intended load for a ladder jack scaffold is 25 lb/ft2. No more than two workers may occupy a platform at any one time. The maximum span between supports is 8 feet.
What is the width of a scaffold plank?
Ans.)220mm (or 225mm, or the width of a scaffold plank) 1.10)Are gaps allowed between the planks of a working platform? Ans.) No 1.11)Can platform planks be lapped on the returns of a scaffold?
What is the maximum height a person can fall from scaffolding?
Ans.) Where a person or object could fall more than 4m from the scaffolding. 6.2)Is a person with a Basic Scaffolding Certificate allowed to construct a cantilevered scaffold?
What is the minimum width of a scaffold hoist?
Ans.)Less than 225mm (or 225mm or less than the width of a scaffold plank) 1.23)Is it acceptable to use a personnel hoist as the only means of access to a scaffold’s working platforms?
What is the minimum width of a scaffold plank used in a ladder jack scaffold?
18 inches2 The minimum width of the platform of a ladder jack scaffold shall be 18 inches when a wood plank is being used and 12 inches when a fabricated platform is being used.
What is the minimum weight scaffold planking must be able to support?
Note: Platform units used to make scaffold platforms intended for light-duty use shall be capable of supporting at least 25 pounds per square foot applied uniformly over the entire unit-span area, or a 250-pound point load placed on the unit at the center of the span, whichever load produces the greater shear force.
What is a ladder jack scaffold?
A ladder jack scaffold is a simple device consisting of a platform resting on brackets attached to a ladder. Ladder jacks are primarily used in light applications because of their portability and cost effectiveness.
What is the minimum width for scaffold platform and walkways?
18 inchesExcept as provided in paragraphs (b)(2)(i) and (b)(2)(ii) of this section, each scaffold platform and walkway shall be at least 18 inches (46 cm) wide.
How wide is an OSHA plank?
OSHA Grade Planks are made of Yellow Southern Pine, Clipped, Rodded and OSHA Stamped. Come in three sizes: 8', 12' and 16' lengths. All planks are 2" high by 10" wide and rod and clipped.
What are the requirements for a scaffold plank?
Knots: Must be sound, tight, and well spaced. 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”. On the edges there should be no knots larger than 10 mm or 3⁄8” in the middle third of the plank.
What is the maximum height of a ladder jack scaffold?
20 feet(k) Ladder jack scaffolds. (1) Platforms shall not exceed a height of 20 feet (6.1 m). Therefore, workers are prohibited from being on a ladder jack platform over 20 feet high.
How do you make a ladder jack?
0:392:57How to make your own Ladder Jacks - YouTubeYouTubeStart of suggested clipEnd of suggested clipUm tube steel square tube i cut it in half and made my own i-beams just uh just cut it in half andMoreUm tube steel square tube i cut it in half and made my own i-beams just uh just cut it in half and then welded. The the back together you can see that. And then i did some geometry.
What is OSHA Standard for scaffold?
All suspension scaffolds must be tied or otherwise secured to prevent them from swaying, as determined by a competent person. [29 CFR 1926.451(d)(18)] Guardrails, a personal fall-arrest system, or both must protect each employee more than 10 feet (3.1 m) above a lower level from falling.
What is the standard width of scaffolding?
225 mmBoards provide a working surface for scaffold users. They are seasoned wood and come in three thicknesses (38 mm (usual), 50 mm and 63 mm) are a standard width (225 mm) and are a maximum of 3.9 m long.
How wide is standard scaffolding?
approximately 29 inches wideSingle Wide Scaffold is approximately 29 inches wide so it can roll through standard doorways. Perfect for work in congested or narrow areas. Available in 6, 8, or 10 ft lengths.
What is the minimum width for a ladder opening in a boarded platform?
4.1. The access opening in the platform for the ladder should be as small as practically possible but be no less than 450mm x 600m.
How far do ladders extend beyond a jack?
Set two ladders in position for the jacks so that when the plank is in position each of its ends will extend 1 foot beyond a jack. If using a 10-foot long plank this means setting the ladders about
How many people can be on a ladder jack?
17.3.1 Ladder jacks scaffolds, erected with either wood scaffold planks or fabricated decorator plank, shall be limited to on person on the plank. When ladder jack scaffolds are erected with a fabricated scaffold plank, use shall be limited to no more than two persons on the plank, but only one person shall stand on each half of the plank’s span.
How do ladder jacks work?
This type of simple scaffolding is useful for when you are working in one area for an extended period of time, or on an area that you cannot get a single ladder exactly where you need it (such as dead center on an upstairs window). It is meant to provide support for no more than two people working no more than 20 feet above the base of the ladder. At or above 10 feet, fall protection should be used. Check your local federal, provincial, state and/or local regulations. Two people are needed to set up the system; each person climbs a ladder, holding an end of the plank. Once the plank is in place, you do not need the helper again until it is time to take the scaffolding down.