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Wood work plank to span 6 feet,Wood Cabinet Drawers Plans,Wood Projects For Money,Woodwork In Homes - PDF 2016

15.04.2014 admin
The 4101 narrow span (29 in) scaffolding sections include base, upper, and guard rail sections in 6 ft, 8 ft, and 10 ft lengths.
Masonry work generally is considered light-duty (25 psf) or medium-duty (50 psf) loading, but this doesn't always hold true. Although not equipped to perform sophisticated deflection testing on used plank, most mason contractors can visually monitor their plank for excessive deflection. Load planks carefully and store them in a safe place, away from potential damage from forklifts or other machinery. If notches, cracks or saw kerfs are found in plank, they must be cut shorter to eliminate hazards. Consider the reduction in a plank's load-carrying capacity caused by high moisture content (above 19%). Manufactured wood plank may be more susceptible to moisture absorption than solid-sawn plank. With stricter grading tolerances than standard DI65 scaffold plank, the GripStripTM Scaffold Plank rises to a new level of performance, safety and longevity, while maintaining a competitive investment. DI65 scaffold plank grade allows for a certain amount of end split, warp and stain; defects that can quickly shorten the life of a plank. All planks have GripStripsTM on both top and bottom to help eliminate slippery surfaces, thus providing a far safer plank to work on. GripStripTM planks are mechanically Proof-Loaded in a non-destructive manner per ANSI (A10.8-2001) specifications. Continuously-branded, permanently with your company's name, "OSHA SCAFFOLD PLANK" and the date of production. When purchasing scaffold plank for your next job, take into consideration the risk of price only and what you get for it. The 4100-18 series aluminum scaffold towers offer 6 ft, 8 ft, or 10 ft length platforms that are 29 in wide, and 17 ft 6 in maximum platform height. OSHA regulations require that all work surfaces be completely decked or planked, allowing no more than a one-inch gap between two planks laid side-by-side, or between the plank and an outside vertical member.
Use of these materials will allow contractors to attain higher load capacities than are normally attainable with either wood or manufactured plank. Plank that has been overloaded or subjected to severe impact may be weakened, even if it's apparently intact. At the time GripStripTM Scaffold Plank is manufactured, all splits, warp, stain and other noticeable defects are completely removed.

Check with your scaffold plank supplier to help lessen your liability - request a certificate of Liability Insurance. However, there are three scenarios where exceptions are made: 1) during scaffold erection, 2) in demonstrated confined areas after scaffold erection is completed, and 3) when planking is used solely as a walkway.
With this being the usual case, it will take six planks to completely deck a five-foot-wide frame. OSHA and ANSI standards define one-person loading as 250 pounds placed at the center of the plank or deck span.
When this occurs, the load should be redistributed or, if the planks are new, they should be rejected. Some people advocate periodic retesting and recertification of scaffold plank to detect such damage, but this procedure is neither required nor widely practiced. Still, if a contractor suspects that a plank has been overstressed and has any doubts about its condition, it should be rejected. Point loads have the entire load centered in one spot instead of a uniform distribution of the weight along the entire length and width of the plank or walkboard.
The 4100-12 series aluminum scaffold towers offer 6 ft, 8 ft, or 10 ft length platforms that are 29 in wide, and 12 ft maximum platform height. Wood 2x4s should be adequate, especially since the ladder will be distributing the load to four points. However, to allow a reasonable amount of ladder walking, non-precise foot placement, and protect against random defects, earthquakes, etc., 2x6s or larger would be entirely appropriate.
Regular framing lumber in good condition held together with boards running perpendicular every 2' or less would work well.
Wood planks are graded by a certified lumber grader and must meet the minimum grade of DI65 or better to be considered scaffold grade.
Ideally, planking should come within a few inches of the wall, although OSHA does allow a distance of up to 14 inches.
Don't use plank for mud sills and then reuse it on the scaffold, as this will overload and weaken it. Rainwater on the face surface of plank normally has little effect on its moisture content, but water entering the ends of plank can. By treating your plank and walkboards with the same respect you might other safety equipment, your investment will last and the safety of your crewmembers will be increased. GripStripsTM are highlighted with waterproof ink to ensure moisture beading, lack of moisture entry and extended plank life.

Extension ladders should be 7 to 10 feet longer than the highest support or contact point, which may be the wall or roof line. Contractors need to remember to review the plank's load chart that is part of the OSHA Regulations for Scaffolding to ensure the maximum load capacity of the plank is not exceeded.
A scaffold plank that must hold palletized brick or block, or accommodate several workers at a time, may need to be rated for heavy-duty (75 psf) loading. If plank is used green or treated with fire-retardant chemicals, refer to grading standards for any necessary adjustments to safe spans and loadings.
All planks should be securely tied to supporting brackets, bearers or ledgers to minimize plank movement. GripStripTM Scaffold Plank is also more dense than traditional scaffold plank, resulting in better deflection, stable performance and most importantly — longer life. If a plank is unusually heavy, it may have absorbed enough water to negatively affect its strength. Contact the Scaffold Industry Association for other requirements set forth for plank manufactures.
Many times, in addition to workers, heavy tools and building materials are placed on the plank. The permissible span depends on the size, strength and stiffness of the plank, as well as the loads imposed. If manufactured wood plank gets soaked, or even if it is exposed to prolonged periods of high humidity, consult the equipment's manufacturer.
Scaffold plank, on the other hand, is tested for use horizontally with loads bearing on its face. When buying or renting scaffold frames and planking, contractors need to consider their needs carefully and be prepared to answer three important questions. Adjacent parallel planks should be no more than one inch apart to prevent workers or tools from falling through any gaps.
Capacities for both plank and walkboards assume uniform loading to reach their rated capacities, not point loads. Plank ends should extend six to 12 inches beyond the supporting members and overlap other planks by at least 12 inches, with the overlap at the supports, not the midspan.

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