Grip Strut Grating - Safety Grating Catalog Section

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Grip Strut Grating - AdvantagesGrip StrutGratingGrip Strut design load tablesSafer, serrated surfaceSteel, aluminum, stainless steel2-Diamond planks - 43/4" width . . . . . . . . . . . . . . . . . . . . . . . . . . 8-93-Diamond planks - 7" width . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-114-Diamond planks - 91/2" width . . . . . . . . . . . . . . . . . . . . . . . 12-135-Diamond planks - 113/4" width . . . . . . . . . . . . . . . . . . . . . . 14-158-Diamond planks - 183/4" width . . . . . . . . . . . . . . . . . . . . . . 16-1710-Diamond planks - 24" width. . . . . . . . . . . . . . . . . . . . . . . . . . .1810-Diamond walkway - 24" width . . . . . . . . . . . . . . . . . . . . . . . . 19AdvantagesEconomical to installIn addition to low material cost and nominal erection cost,Grip Strut safety grating also helps save with its long-lasting,rust-resisting materials and finishes. S tandard mill-galvanized finish resists corrosion to helpprovide lasting surfaces. High-strength aluminum and Types 304 and 316L stainlesssteel help provide maximum corrosion resistance. Black unpainted steel available for installations requiringhot dipped galvanized finish after fabrication. T hese light weight yet brawny panels permit substantialreduction in structural steel requirements.VersatilityAvailable in a variety of standard widths and channel heights. Numerous non-standard shapes and sizes. One piece construction with no welds or rivets to fail,minimizes need for plant fabrication. Special shapes and forming can be accomplished to suitunusual requirements.4Eaton’s B-Line series safety gratings Grips soles securely in all directions. Non-slip surface is ideal for inside or outside locationswhere mud, ice, snow, oil and detergents can createhazardous walking conditions. Openings are small enough to catch most falling tools andother dangerous objects.Open design, convenient cleaning Permits quick drainage of fluids, chips, grease and mud. A ny ice accumulation shears easily under normal footpressure. Open design allows convenient access for cleaning, andis easily cleaned with brush, liquid or air spray to helpminimize overall maintenance.High load capacity, long life High strength-to-weight performance is achieved throughdepth of section and structural design. Bridged struts with integral side channels form plank thatcan support loads with minimum transverse and longitudinaldeflection. No rivets or pressure joints to break or loosen. S turdy construction provides advantages of heavy loadcarrying capacity with minimal deflection. Rugged durability with longer-lasting performance.Fast installation L ight, easy-to-handle planks make installation simpler andquicker. Can be handled by one man. Most sections are rapidly bolted, clamped or welded intoplace, easily field-cut at virtually any angle, or fabricated toadapt to field conditions. Several attachment devices permit fastening to mostexisting surfaces; allow fast installation or

Grip Strut Grating - Proof of performancePerformanceGrip StrutGratingTested by an independent laboratory for slip resistance,according to standards and methods established by FederalSpecifications RR-G-1602D, Grip Strut safety grating exceedsall requirements of this specification.The standards were exacting - five shoe sole materials testedin three directions under five conditions: dry, greasy, muddy,soapy and icy.Grip Strut safety grating test showed it was more slipresistant than similar materials, depending on shoe materialsand surface conditions.In survey after survey, accidents caused by falls are high onthe list of disabling and lost-time injuries and even death. Infact, statistics from many states rate this type of accident aresecond as the cause for industry’s loss of manhours and lowerproductivity.As proved in the test described above, Grip Strut safety gratingcan substantially reduce this kind of accident. In addition, thehazard of falling objects is significantly minimized by the shapeand size (17 8 " x 11 16 ") of the surface openings.Test performance – slip resistance vs. federal specificationsA Federal specificationfor steel12011010090807060A B C D E ADryB C D E A B C D E A B C D E A B C D EMudGreaseSoapIce50Pounds of Force130B 12 Gauge (2.6mm) steelGrip Strut GratingC 14 Gauge (1.9mm) steelGrip Strut gratingD Federal specificationfor aluminumE .080 (2.0mm)Aluminum GripStrut gratingValues determined in accordance with standards for slip-resistance established by Federal Specification RR-G-1602D. The valuesindicated are an average of values obtained for five sole materials (leather, boot rubber, shoe rubber, Neolite † and Hypalon †)tested in three directions (longitudinally, transversely and diagonally) for the surface conditions noted. Values are in pounds offorce necessary to move a 175 pound load one inch across the surface of grating.† Mark shown is the property of its respective owner.Close-up of standard patternStandard serrated surfaceEaton’s B-Line series safety gratingsNon-serrated surface also

Grip Strut Grating - General Load InformationHow to read load tablesTo select size of Grip Strut safety grating: Determine load Clear span Deflection requirements Select from load tables the appropriate plank to meet jobrequirements.Example: Clear span of 4'-0", concentrated load requirement of300 lbs. at 0.25" maximum deflection. Grip StrutGratingSelect from the tables followingFor 8-diamond, 183 4" wide, 21/2" channel, 12 gauge steel whichcarries a load of 416 lbs. at a 0.18" deflection. This is one size todo the job. Other sizes will carry more load if necessary.For more economical selection, choose the greatest width thatwill support the load consistent with job requirements andchoose deeper channels rather than heavier steel gauges.Grip Strut safety grating will generally carry the sameconcentrated load, tabulated in lbs. at midspan, for a givenspan, material gauge and channel height, regardless of width.(See “How load tables were prepared” described below.) Theuniform load tables are tabulated in lbs./sq.ft., which accountsfor the difference in load capacity shown for various widths.Deflection is in inches.How load tables were preparedThe values shown in the following tables are based on actualload tests conducted in accordance with the provisions ofthe AISI Specification for the design of cold-formed steelstructural members, 1986 edition.To help ensure the safety of the tabulated loads, two aspectsof Grip Strut safety grating must be considered.A T he first consideration is transverse bending in the gratingsurface, which is referred to as “strut flexure”. This occurswhen the grating is loaded with either a uniform load ora mid-width concentrated load, and the ”struts” (gratingsurface) deflect relative to the side channels. To determinethe allowable strut loads, samples of each grating materialand thickness were tested for each plank width. (See Figure1a below and 2a on the following page). The data resultingfrom these tests was used to prepare “strut loading” tables,which give allowable loads and deflections consideringstrut flexure only. These allowable strut loads, alongwith the results of additional tests performed on 8- and10-diamond grating, have been incorporated in the productselection/design tables on pages 8 through 19. Since 2- through 5-diamond planks are relatively narrow(less than 1 foot wide), it can be assumed that both sidechannels effectively support the concentrated load and thatthe grating surface deflection is negligible. Based upon theseassumption, the values in the following design tables for2-diamond through 5-diamond have been determined.Allowable uniform load (U) Values indicated in the rows adjacent to “U” are the lowestof the (1) maximum allowable uniform loads consideringchannel flexure and (2) maximum grating surface flexure.Deflection corresponding to “U” Deflection values are indicated below the uniform loads andare in the mid-span side channel deflections for the plankscarrying the allowable uniform loads (Figure 1c and 2c).Allowable concentrated load (C) Values indicated in the rows labeled “C” are the lowest ofthe (1) maximum allowable concentrated load consideringchannel flexure (Figure 1b and 2b), with both channelseffective, and (2) the maximum allowable strut load (Cs) for a1 foot long sample (Figure 1a and 2a).Deflection corresponding to “C” Deflection values indicated below “C” values in the tablesare the mid-span, side channel deflections produced whenthe allowable concentrated load is placed at mid-span. If grating surface deflection should be considered whenselecting a product to meet a particular specification, thenthe deflection of the mid-width of the grating, relative tothe side channels, can be calculated using both the data inthe strut loading tables (pages 8 -19) and the load/deflectionconversion formula on top of following page. Load data based on yield strength of 33,000 psi for steel,23,000 psi for aluminum, 35,000 psi for Type 304 stainlesssteel, and 30,000 psi for Type 316L stainless steel.Load - CLoad - CsDD62-, 3-, 4- and 5-diamond allowable load and deflection tablesFigure 1b - Concentrated loadFigure 1a - Strut loadCs - Concentrated strut load (lb./ft.)B The second aspect of Grip Strut safety grating strength ischannel flexure. This occurs when the channels at mid-spanof the plank deflect relative to support points. To verify theperformance of the side channels, samples were loadedwith concentrated and uniform loads at different spans (seeFigures 1b/2b and 1c/2c). To approximate the most severecondition, there were no attachments between the channelsand the supports. In cases where spans are shorter,channels deeper and planks wider, strut flexure becomesmore critical.C - Concentrated load (lb.)Eaton’s B-Line series safety 1c - Uniform loadLoad -UDU - Uniform load (lb./ft.2)

Grip Strut Grating - General Load InformationIn the elastic range, deflection is proportionalto the applied load for both uniform andconcentrated loads. This relationship canbe used to determine the deflection that anyload which is less than the allowable load willproduce, (as shown in Example A). Also, ifdesired, the load which will produce a specificdeflection can also be determined if the load isin the elastic range (as illustrated in Example B).Example AWhat deflection will a 300 lb. concentrated load produce on a plank(catalog number 103012) spanning 5"-0"?See page 18 for item 103012 at a span 5'-0" C 480 lb. D 0.26"D @ 300 lb. 0.26"/480 lb. x 300 lb. 0.16"Example BIf a plank (catalog number 103012) is spanning 6'-0", what concentratedload will produce a 1/4" deflection?See page 18 for item 103012 at a span 6'-0" C 400 lb. D 0.26"C @ 1/4" 400 lb./0.26" x 0.25" 385 lb.8- and 10-diamond allowable load and deflectiontablesAs width increases, grating strut flexure becomes much moreimportant. 8-diamond and 10-diamond products are wide enoughto require a change in the assumptions used to prepare the2-diamond through 5-diamond product selection/design tables.No longer will it be assumed that both side channels are equallyeffective in supporting a concentrated load. In fact, to providea high level of safety, one side channel will be required to carry100% of a concentrated load.Also, strut deflection for 8-diamond and 10-diamond productsmay be significant. The most critical case occurs when aconcentrated load is located at mid-span and mid-width. Todetermine how the struts perform under this loading, 3 foot longsamples of each material and thickness were tested. For thesetests, the side channels were continuously supported and loadswere applied using a 1 foot long and 1 inch wide bar placedparallel to the side channels at mid-width and at the longitudinalcenter.Results of these tests, included in the 8-diamond and 10-diamondproduct design tables, proved the performance of thesematerials when a concentrated load is applied at mid-span andmid-width. If a concentrated load is to be applied at mid-width atthe end of a plank, consult the strut loading tables (pages 8-19).Figure 2a - Strut loadGrip StrutGratingLoad and deflection conversion formulasValues tabulated for 8-diamond and10-diamond grating:Allowable Uniform load (U)Values are given in the rows labeled “U” and are the lowest ofthe (1) maximum allowable uniform loads considering channelflexure, and (2) maximum grating surface flexure.Deflection Corresponding to “U”Deflection values appear in the rows labeled “D”, below the“U” values, and are maximum deflections the allowable uniformloads would produce. Maximum deflections will occur at midspan and mid-width and will be the sum of side channel andgrating surface deflections (Figure 1c and 2c).Allowable concentrated load (C)Values tabulated in the rows labeled “C” are the lowest of the (1)maximum allowable concentrated load considering side channelflexure (with one side channel supporting the entire load —Figure 2b, and (2) the maximum allowable strut flexure(Figure 2a).Deflection Corresponding to ”C”Deflection values are indicated below “C” values in the tableand are deflections the allowable concentrated load willproduce at mid-span and at the mid-width. The deflection is thesum of side channel and grating surface deflections.Figure 2c - Uniform loadFigure 2b - Concentrated loadLoad - CLoad - CsLoad -UDDDEaton’s B-Line series safety

Grip Strut Grating - Safe Loading Tables2-Diamond plank — 43/4" width4 3 4"Grip StrutGrating11 8"11 16"9 16"9 32"11 16 "1 7 8"1 7 8"9 32"7 16"Depth5 16"5 8"90 7 8"Product selection design tablesAllowable loads and deflecti