Bar Grating. Swage-Locked Aluminum Grating (pages 37-40)

Size: px

Start display at page:

Download "Bar Grating. Swage-Locked Aluminum Grating (pages 37-40)"

Kelley Simmons
6 years ago
Views:

Standard welded grating is generally considered to include grating with bearing bars spaced at 1-3/16" or 15/16" and is available in carbon or stainless steel.

1 Welded Steel Grating (pages 14 35) Standard Welded: AMIO s welded grating is used universally for walkway and mezzanine decking applications. It is ideal for most general industrial and commercial uses. Standard welded grating is generally considered to include grating with bearing bars spaced at 1-3/16" or 15/16" and is available in carbon or stainless steel. lose-mesh: lose-mesh grating is similar to standard grating except that the spacing of the bearing bars is closer, ranging from 7/16" to 13/16". It is suitable for applications requiring narrow spacing for aesthetic or functional reasons. It is available in carbon or stainless steel. Railroad: Welded grating with spacings of 1-9/16" and 1-11/16" meet the requirements for AAR approved safety walkway products. This grating is designed specifically for use as railcar brake steps, running boards, walkways and platforms. Heavy-uty: Heavy-uty uses thicker (1/4", 5/16", 3/8") and deeper bearing bars. Although the tables show bars as deep as 6", deeper grating can be custom fabricated on request. Heavy-uty is used for airfields, highways, industrial floors, ramps, docks, reinforced concrete areas and specialty applications. Press-Locked Steel and Aluminum Grating (pages / steel and pages / aluminum) Because this grating is a system of interlocking, perpendicular bars, it provides a smooth clean look ideal for architectural applications such as grilles, dividers and screens. It is used in the same structural applications as its welded steel and rectangular aluminum counterparts. Materials include carbon steel, stainless steel or aluminum. Spacings range from 7/16" to 1-3/16". Bar Grating Swage-Locked Aluminum Grating (pages 37-40) Swage-locked aluminum grating is manufactured with either an I or rectangular bearing bar. These bars are permanently locked to the cross rods with a swaging process which reshapes the rods. Because of the flange width, I-bars reduce the open spaces of the grating yet I-bar swage-locked is lighter weight and less costly than a rectangular bar grating with the same bar thickness. uo-grip Aluminum Planks (page 48) uo-grip planking is a one piece extruded plank with exceptional strength and stiffness-toweight ratio due to its I-beam ribs. It is available in either unpunched, square punched or rectangular punched styles to suit lighting and ventilation considerations. The design provides continuous walking surface for additional safety. Riveted Steel and Aluminum Grating (pages / steel and pages / aluminum) Riveted grating is especially practical for areas where rolling loads are used because of its smoother surface. It is available in both aluminum and steel. Riv-exteel (pages 54 55) Riv-exteel is a high strength grating which incorporates a truss style design through the use of a reticulated riveted bar in conjunction with a straight bearing bar. It has been used for nearly 75 years as bridge decking, curb inlet grates, industrial flooring, driveways across culverts and heavy traffic areas. Material Selection arbon Steel: arbon steel provides an economical, high strength grating for use in most industrial and commercial applications. Aluminum: Lightweight, corrosion resistant and non-sparking alloys make aluminum ideal for use in chemical, petroleum, hydro and food processing plants, sewage, water and waste treatment facilities; munitions plants and other volatile areas; aboard ship; etc. Stainless Steel: Stainless steel is ideal for use in caustic atmospheres where corrosion resistance and minimum carbide precipitation are important considerations. It is especially applicable for chemical, food and hydro processing areas. Painted: One coat of manufacturer s standard paint, applied in accord with the manufacturer s standard practice. One shop coat of manufacturer s standard paint is designed to protect the grating and/or treads from the elements during transit. Meets NAAMM s Metal Bar Grating Manual MBG (Note: Paint is not intended as a finish coat.) Gratings and/or treads stored at the jobsite shall be covered or under roof. Required covering is not the responsibility of the grating and/or tread supplier. Galvanizing: Grating specified to be galvanized shall have their exposed surfaces zinc-coated by the hot dip process after fabrication, with a coating of not less than 1.8 oz/ft 2 (550 g/m 2 of coated surface). 13

2 Steel Bar Grating Welded Steel Bar Grating is the most popular of all grating types due to its strength, cost-efficient production and ease of installation. niversally used in most general industrial plants as well as commercial buildings, it has wide applications as walkways, platforms, safety barriers, drainage covers and ventilation grates. It is also ideal for use as mezzanine decking since it supports the same loads as comparable solid flooring. More than that, its cost saving openness maximizes the circulation of air, light, heat, water and sound, while promoting cleanliness. And, where insurance codes permit, additional sprinklers can often be eliminated. Standard panels are available in widths of 2', 3' or 4'. Welded steel bar grating is resistance welded to create a rugged, onepiece constructed panel. The bearing bars are automatically resistance welded at the contact point with the cross bars and, under a combination of high heat and pressure, are fused together to form a permanent joint. The cross bars provide a high degree of rigidity, yet retain a smooth flat surface for free and easy walking. Press-Locked Steel Bar Grating is often desirable because of its clean, smooth look and excellent lateral support. It exhibits the same strength, long life and openness as welded grating, although it is not recommended for rolling loads. Instead of welding the joints, however, tremendous hydraulic pressure is used to bond the two close-tolerance slotted bars together. Permanent locking is achieved by forcing the deep cross bar into the notched bearing bar. Further fabrication or galvanizing is not recommended after the material leaves AMIO. Steel Welded Railroad Grating, in 1-9/16" and 1-11/16" spacings, is AAR (Association of American Railroads) approved and specified for brake steps, running boards, walkways and platforms for railroad cars. esigned and engineered specifically for railroad use, AMIO-Klemp railroad grating is used by both new car and car repair facilities since it is interchangeable with other AAR approved gratings. The serrated bearing bars provide additional safety and the openness of bar grating minimizes build up of snow, ice and other debris. WELE STEEL BAR GRATING STEEL WELE RAILROA GRATING (AAR APPROVE) PRESS-LOKE STEEL BAR GRATING 25-W / 16 Std. Panel width 2'-0 & 3'-0 4'-0 wide on some styles of welded and press-locked (upon request) 14

3 Steel Bar Grating WELE (W) 1-3/16" / Bearing Bars PRESS-LOKE (P) 1-3/16" / Bearing Bars ross Rods 4" / ross Rods 2" / NON-SERRATE & SERRATE ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE / 1-2-1/ LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" " 66" =safe uniform load, psf (page 93) = safe concentrated load, psf (page 93) = deflection, inches E=modulus of elasticity, 29,000,000 psi F=fiber stress, 18,000 psi Material: ASTM A-1011 standard eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 72" 78" 84" " 108" W/P-19 PANEL WITH (inches) Note: P-Press-Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions. 1 5 / / / /8 6 1 / /4 8 7 / / / / / / / / /8 2 9 / / / /8 7 5 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 15

4 Steel Bar Grating WELE (W) 15/16" / Bearing Bars PRESS-LOKE (P) 15/16" / Bearing Bars ross Rods 4" / ross Rods 2" / NON-SERRATE & SERRATE ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE / 1-2-1/ 15-P LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" " 72" " 84" " = safe uniform load, psf (page 93) =safe concentrated load, psf (page 93) =deflection, inches E = modulus of elasticity, 29,000,000 psi F=fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 96" 108" W/P-15 PANEL WITH (inches) Note: P-Press Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions / / / / / / /8 8 9 / / / / / / / / / / /8 2 1 / / / / / / /8 9 9 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 16

5 Steel Bar Grating lose-mesh WELE (W) 13/16" / Bearing Bars PRESS-LOKE (P) 13/16" / Bearing Bars ross Rods 4" / ross Rods 2" / ross Bars 4" / ross Bars 2" / / 1-2-1/ W/P-13 PANEL WITH (inches) NON-SERRATE LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" " 72" " 84" " =safe uniform load, psf (page 93) = safe concentrated load, psf (page 93) =deflection, inches E=modulus of elasticity, 29,000,000 psi F = fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 96" 108" Note: P-Press-Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions / /4 2 9 / /8 4 3 / / /8 7 7 / /4 9 1 / / / / / / / / / / /8 3 7 / /4 5 1 / / / /2 8 5 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 NON-SERRATE & SERRATE 17

6 Steel Bar Grating lose-mesh WELE (W) 11/16" / Bearing Bars PRESS-LOKE (P) 11/16" / Bearing Bars ross Rods 4" / ross Rods 2" / ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE NON-SERRATE & SERRATE / 1-2-1/ LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" 60" " 72" = safe uniform load, psf (page 93) =safe concentrated load, psf (page 93) =deflection, inches E = modulus of elasticity, 29,000,000 psi F = fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer sapproval. Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table " 84" 96" 108" 18 W/P-11 PANEL WITH (inches) Note: P-Press-Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions / /2 2 3 / /8 3 9 / / / /8 6 5 / / /8 9 1 / / / / / / /16 7 /8 1 9 / / / /8 4 5 / / /8 7 1 / /4 8 7 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16

7 Steel Bar Grating lose-mesh WELE (W) 5/8" / of Bearing Bars PRESS-LOKE (P) 5/8" / of Bearing Bars ross Rods 4" / ross Rods 2" / ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE NON-SERRATE & SERRATE / 1-2-1/ LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" 60" " = safe uniform load, psf (page 93) = safe concentrated load, psf (page 93) =deflection, inches E=modulus of elasticity, 29,000,000 psi F = fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. 72" Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 78" 84" 96" 108" W/P-10 PANEL WITH (inches) Note: P-Press-Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions /4 1 3 / /8 3 1 /4 3 7 /8 4 1 /2 5 1 /8 5 3 /4 6 3 / /8 8 1 /4 8 7 /8 9 1 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 19

8 Steel Bar Grating lose-mesh WELE (W) 1/2" / Bearing Bars Welded Panels Max 2'-0 Width PRESS-LOKE (P) 1/2" / Bearing Bars ross Rods 4" / ross Bars 4" / ross Bars 2" / NON-SERRATE ONLY NON-SERRATE & SERRATE / 1-2-1/ W/P-8 PANEL WITH (inches) LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" 60" " 108" " =safe uniform load, psf (page 93) = safe concentrated load, psf (page 93) =deflection, inches E=modulus of elasticity, 29,000,000 psi F = fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval /8 1 1 /8 1 5 /8 2 1 /8 2 5 /8 3 1 /8 3 5 /8 4 1 /8 4 5 /8 5 1 /8 5 5 /8 6 1 /8 6 5 /8 7 1 /8 7 5 /8 8 1 /8 8 5 /8 9 1 /8 9 5 / / / / / / / / / /8 72" Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 78" Note: P-Press-Locked cross bars typically extend 1/8" each side. W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions. 11 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 84"

9 Steel Bar Grating lose-mesh WELE (W) 7/16" / Bearing Bars Welded Panels Max 2'-0 Width PRESS-LOKE (P) 7/16" / Bearing Bars ross Rods 4" / / 1-2-1/ P-7 PANEL WITH (inches) NON-SERRATE ONLY LOA & EFLETION TABLE SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" 60" ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE 72" 78" " = safe uniform load, psf (page 93) = safe concentrated load, psf (page 93) =deflection, inches E=modulus of elasticity, 29,000,000 psi F = fiber stress, 18,000 psi Material: ASTM A-1011 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. Serrated Bars: For Note: P-Press-Locked cross bars typically extend 1/8" each side. Panel widths do not include these extensions / / /8 2 5 / /4 3 3 / /8 4 1 / / / / / / / /8 7 9 / / /8 9 5 / / / / / / / /8 5 /8 1 1 / / / / / / / /8 4 9 / / /8 6 5 / /4 7 3 / /8 8 1 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 serrated grating, the depth of grating required for a specified load is 1/4" 84" deeper than that shown in the table. 96" 108" 21

10 Steel Bar Grating STAINLESS STEEL GRATING When caustic atmospheres are encountered, or when corrosion resistance and/or minimum carbide precipitation are essential considerations, AMIO-Klemp stainless steel grating is the answer. The longer lasting capabilities of stainless steel under these special conditions make it an economical selection over the long term. It is ideal for use in food processing areas, breweries, bottling plants, dairies and meat packing plants. Stainless steel can also be used in power plants, sewage treatment plants, pumping stations and hydrocarbon processing facilities where various caustic environments are normal. It also has application in shipboard and building industries where saline solutions or atmospheres are present. Stainless Steel Bar Grating is available in welded bar grating, riveted bar grating, swage-locked and press-locked bar grating. Specify S, RS, SR/SI and SP. Heavy-duty welded bar gratings and Riv-exteel can also be manufactured from stainless steel. Specify HS, RSL and RSH. The alloys below are available as standard products. Each conforms with ASTM A 167. In addition, special alloys are available upon request. HEMIAL OMPOSITION Alloy arbon Manganese Silicon hromium Phosphorus Sulfur Nickel Nitrogen Other General (max. %) (max. %) (max. %) (% range) (max. %) (max. %) (% range) (max. %) Elements escription Type 304 alloys resist most oxidizing acids and can withstand all ordinary rusting. They are immune to foodstuffs, sterilizing solutions, most of the organic chemicals and dyestuffs, and a wide variety of inorganic chemicals. This grade should be considered for use unless some special mechanical, physical or fabricating characteristic is required. 304L Type 304L is the low carbon modification of Type 304. This minimizes the problem of carbide precipitation during welding % Mo Type 316 alloys have superior corrosion resistance especially to sulfurous acid compounds and many chemicals used by the chemical process industries. It is more resistant to pitting corrosion than typical 18-8 alloys (hromium- Nickel), such as Type L % Mo Type 316L is the low carbon modification of Type 316. This minimizes the problem of carbide precipitation during welding. Note: The above alloys conform with ASTM A167. FINISH nless otherwise specified, stainless steel grating shall have a mill finish as fabricated. As fabricated means as fabricated in AMIO-Klemp s shop without a subsequent finishing operation. Stainless steel will show some discoloration around the joints due to welding. Finishes available to remove discoloration include sandblasting and electro-polishing, the latter being used where bright finish is desired. Shot blasting or wire brushing should be avoided since these operations can cause iron contamination which, if not removed, will cause rusting and discoloration of the surface. Such contamination can be removed by passivation. Electro-polishing leaves a passive surface. The swage-locked and press-locked processes will not show discoloration due to welding. LOAS AN EFLETIONS A Load and eflection Table for S-19 and SP-19 is on the next page. All of the carbon steel bar grating products are available in stainless steel. In addition, AMIO-Klemp s rectangular bar swage-locked (SR) can be produced in stainless steel. For loads and deflections for other products such as riveted (RS), heavy-duty (HS), Riv-exteel (RSL and RSH) and swage-locked (RSP), adjustments must be made to the carbon steel and aluminum tables found in this catalog. These adjustments will account for the differences in modulus of elasticity and fiber stress between stainless steel, carbon steel and aluminum. Multiply, and in the standard carbon tables by: Multiply, and in the heavy-duty carbon tables by: Multiply, and in the KRP aluminum tables by: When using:,,, Stainless Steel Alloy Stainless Steel Alloy 304L Stainless Steel Alloy Stainless Steel Alloy 316L Note: Modulus of Elasticity for Stainless Steel Alloys is 28,000,000 psi; Standard carbon steel (ASTM A1011) is 29,000,000 psi; Heavy-duty carbon steel (ASTM A36) is 29,000,000 psi; and Aluminum (ASTM B221) is 10,000,000. Fiber Stress for Stainless Steel Alloys 304 and 316 is 20,000 psi; Stainless Steel Alloys 304L and 316L is 16,500 psi; Standard carbon steel (ASTM A1011) is 18,000 psi; Heavy-duty carbon steel (ASTM A36) is 20,000 psi; and Aluminum (ASTM B221, 6061-T6) is 12,000 psi. 22

11 Steel Bar Grating STAINLESS WELE 1-3/16" / Bearing Bars STAINLESS PRESS-LOKE 1-3/16" / Bearing Bars 19-SP-2 ross Bars 4" / ross Bars 2" / ross Bars 4" / ross Bars 2" / NON-SERRATE & SERRATE NON-SERRATE & SERRATE Approx. Sec. Mod 1-1/ 1-2-1/ S/SP-19 PANEL WITH (inches) SPAN (irection of Bearing Bar) 24" 30" 36" 42" 48" 54" " 66" = safe uniform load, psf (page 93) =safe concentrated load, psf (page 93) =deflection, inches E = modulus of elasticity, 28,000,000 psi F=fiber stress, 20,000 psi Material: ASTM A-167 eflection: Spans and loads to the right of the bold line exceed 1/4" deflection for uniform load of 100 psf which provides safe pedestrian comfort. These can be exceeded for other types of loads with engineer s approval. Serrated Bars: For serrated grating, the depth of grating required for a specified load is 1/4" deeper than that shown in the table. 72" 78" 84" " 108" LOA & EFLETION TABLE Note: SP-Stainless Press-Locked cross bars typically extend 1/8" each side. S-Stainless Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions. 1 5 / / / /8 6 1 / /4 8 7 / / / / / / / / /8 2 9 / / / /8 7 5 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /16 Note: For gratings with other than 1-3/16" bearing bar spacing, proportionate conversion factors apply. This table is for Alloys 304 and 316. For Alloys 304L and 316L, F=16,500 psi and values for, and should be muliplied by

Steel Bar Grating RAILROA GRATING (AAR APPROVE) 1-9/16" / of Bearing Bars 1-11/16" / of Bearing Bars 25-W-4 2 ross Rods 4" / ross Rods 4" / AMIO-Klemp bar grating is approved for conformity to

AMIO-Klemp bar grating is designed and engineered to meet AAR specifications for running boards, dome platforms, brake steps and crossover platform applications.

12 Steel Bar Grating RAILROA GRATING (AAR APPROVE) 1-9/16" / of Bearing Bars 1-11/16" / of Bearing Bars 25-W-4 2 ross Rods 4" / ross Rods 4" / AMIO-Klemp bar grating is approved for conformity to Association of American Railroads (AAR) Specifications, Rule 53 in the Field Manual of the AAR Interchange Rules. AMIO-Klemp bar grating is designed and engineered to meet AAR specifications for running boards, dome platforms, brake steps and crossover platform applications. AMIO-Klemp conforms to the requirements for Group No. 1, Group No. 2 and Group No. 3. nsupported length for each of these Groups is 4', 7' and 10', respectively. AAR Bar Size Symbol Approx. Weight nsupported Group Number (psf) Length 1 25-W ' 1 25-W ' ' 2 1-1/ ' ' W-25/W-27 PANEL WITH (inches) Note: W-Welded cross rods may extend 1/8" each side. Panel widths do not include these extensions / / / / / / / / / / / / / / / / / /16 25-W / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /

Bar Grating. Material Selection

Bar Grating. Material Selection Welded Steel Grating (pages 14 35) Standard Welded: AMIO s welded grating is used universally for walkway and mezzanine decking applications. It is ideal for most general industrial and commercial uses.