When can you use the cross bracing given on the rear of a step ladder for climbing?
Cross-bracing on the rear section of stepladders shall not be used for climbing unless the ladders are designed and provided with steps for climbing on both front and rear sections.
Cross bracing is used to keep buildings stable when the wind blows and during seismic events, such as an earthquake. It also limits the building's lateral movement, reducing the likelihood of damage to the structure's components and cladding.
. Employers should ensure that stairs have visual cues to provide a warning in change of elevation, have slip-re- sistant tread, are kept clean, and have adequate lighting. Handrails should be considered at locations with less than 4 steps.
(4)(xv) Crossbracing is acceptable in place of a midrail when the crossing point of two braces is between 20 inches (0.5 m) and 30 inches (0.8 m) above the work platform or as a toprail when the crossing point of two braces is between 38 inches (0.97 m) and 48 inches (1.3 m) above the work platform.
Fabricated frame scaffolds require the use of crossbraces. In addition to squaring and aligning the legs, they reduce the unbraced length of the leg, thereby giving the frame a higher load capacity than it would otherwise have.
What are the top three OSHA-cited ladder violations? Lack of worker training, Improper use of the top of step ladders, Not having a portable ladder extend three feet above the landing, View the image and decide whether it has good maintenance or bad maintenance.
When traveling on a fork lift, the carried load must be at the highest feasible position during travel. A wire rope sling with a strength of 10000 pounds and a total working load of 2000 pounds has a design factor (multiplier) of ________ .
Fixed ladders: fall protection must be provided for employees climbing or working on fixed ladders above 24 feet. 29 CFR 1926.1053(a)(19) states that fall protection must be provided whenever the length of climb on a fixed ladder equals or exceeds 24 feet.
Cross braces shall not be used as a means of access. Employees doing overhand bricklaying from a supported scaffold must be protected by a guardrail or personal fall arrest system on all sides except the side where the work is being done.
A platform width of three feet or less must have guys, ties and braces every 26 feet or less. When the 4:1 height ratio is reached guys, ties and braces are to be installed at each end of the scaffold and at horizontal intervals not to exceed 30 feet vertically.
Why are guardrails needed at the leading edge of a scaffold?
The standard's definition of a guardrail system is: "a vertical barrier, consisting of, but not limited to, Toprails, midrails, and posts, erected to prevent employees from falling off a scaffold platform or walkway to lower levels [emphasis added]." Therefore, guardrail systems must have midrails.
In the general industry, the height requirement for scaffolding is 4 feet above a lower level. For construction work, the height requirement is 6 feet above a lower level. All workers 10 feet above a lower level must have fall protection.
Transverse (Sectional or Ledger) Bracing : Diagonal braces installed in the plane of the shorter dimension (width) of the scaffold. Zig-Zag (Dog-leg) Bracing : Diagonal braces placed end-to-end and that alternate back and forth.
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.
Ladders shall be used only on stable and level surfaces unless secured to prevent accidental displacement. Ladders shall not be used on slippery surfaces unless secured or provided with slip-resistant feet to prevent accidental displacement.
- Willful. A willful violation exists under the OSHA Act where an employer has demonstrated either an intentional disregard for the requirements of the Act or plain indifference to employee safety and health. ...
- Serious. ...
- Other-Than-Serious. ...
- De Minimis. ...
- Failure to Abate. ...
1. Fall Protection. Fall Protection was the most commonly cited OSHA violation of 2020 — and it's been the No. 1 violation for the past 10 years.
Use extra caution when handling loads that approach the truck's maximum rated capacity: Tilt the mast back and position the heaviest part of the load against the carriage. (Figure 6) Travel with the mast tilted back to keep the load stable.
Turning and Steering
Unlike automobiles, most forklifts use their rear tires for turning and the tires rotate to nearly 90 degrees. This allows operators to get their vehicles into tighter spaces.
Driving Direction on Grades
New forklift operators are sometimes curious and ask, “Which direction should the load face when traveling up a ramp?” The answer is, you should always drive a loaded forklift with the forks and load pointed upgrade. This will help prevent the load from sliding off the forks.
Under which circumstances must an employer provide a guardrail?
Regardless of height, if a worker can fall into or onto dangerous machines or equipment (such as a vat of acid or a conveyor belt) employers must provide guardrails and toe-boards to prevent workers from falling and getting injured.
When stairways are not a permanent part of the structure, the stairway landing must be at least 30 inches deep and 22 inches wide, at every 12 feet or less of vertical rise.
X-bracing was used in the construction of the 1908 Singer Building, then the tallest building in the world.
Cross-bracing (or X-bracing) uses two diagonal members crossing each other. These only need to be resistant to tension, one brace at a time acting to resist sideways forces, depending on the direction of loading. As a result, steel cables can also be used for cross-bracing.
For a new home, you'll want to install cross braces during the construction of the floor frame, to avoid the aforementioned floor problem in futures. Basically, cross-bracing your floor joists makes your wood frame floor system stiffer, consequently preventing twisting, deflection, squeaking, sagging, and bouncing.