9 Catalog Expanded Metal Bar Crating
EXPANDED METAL & BAR GRATING
CHATHAM STEEL CORPORATION
107
EXPANDED METAL Expanded Metal is a single sheet of steel that has been cut and expanded by the action of a special knife which acts as both a cutting shear and forming die. The knife first pierces and slits the steel sheet, then expands these slits into the openings characteristic of Expanded Metal. It is lighter per foot and stronger per pound than the solid sheet of steel from which it is made. Being made from a solid sheet of steel, it can never ravel or fray. Its uses are many and varied: machine guards, storage bins, baskets, tool enclosures, platforms, stair treads, room dividers, lawn furniture, decorative grills, and many more.
STANDARD EXPANDED METAL (SAFE-T-MESH) This is the unflattened form of Expanded Metal. The diamond strands are rectangular and at a sharp angle to the original plane of the metal sheet from which they were formed, allowing maximum air circulation and visibility. It can be cut or formed to almost any size and shape required.
FLATTENED EXPANDED METAL Flattened Expanded Metal is formed by the same cutting and expanding operations used in making Safe-T-Mesh, but with the addition of one more step. After the metal is cut and expanded, it is passed through a series of rolls that flatten and smooth the strands and bridges. The resulting sheet of expanded metal is approximately two gauges thinner than the original sheet, although all the original metal is retained.
13⁄16"-#24-R 50 lb. 13⁄16"-#22-R 63 lb. 13⁄16"-#20-R 75 lb. 11⁄4"-#20-% 11⁄4"-#18-R 11⁄2"-#20-R 11⁄2"-#18-R 11⁄2"-#16-R 11⁄2"-#13-R 13⁄4"-16 H-R 13⁄4"-#13-R 13⁄4"-#10-R 13⁄4"-# 9-R 1" -#16-R 11⁄2"-#18-R 11⁄2"-#16-R 11⁄2"-#13-R 11⁄2"-#10-R 11⁄2"-# 9-R 11⁄2"-# 6-R 2" -#10-R 2" -# 9-R
Weight In Pounds Per Sq. Ft. Plain Galv. .500 — .625 — .750 — .86 1.29 1.14 1.71 .43 .59 .70 .85 .86 .97 1.47 1.73 .54 .65 .80 .92 1.20 1.36 1.80 1.95 .44 .51 .20 .25 .40 .48 .60 .68 .79 .89 1.20 1.31 2.50 2.73 .68 .75 .90 1.02
Standard Sizes In Feet Width Length 2 4 2 4 2 4 3-4 8 3-4 8 3-4-6 8 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 4 8-10-12 4 8-10-12 4 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 to order 8-10-12 8-10-12
Manufactured from Mild Carbon Steel
Style Designation
REGULAR Size of Openings in Inches Width Lgth. .166 .437 .166 .437 .166 .437 .172 .719 .172 .719 .438 .938 .438 .938 .375 .938 .313 .938 .813 1.750 .750 1.688 .750 1.625 .688 1.563 1.000 2.063 1.313 2.625 1.250 2.625 1.188 2.500 1.188 2.500 1.125 2.375 1.000 2.313 1.625 3.438 1.563 3.375
Center to Center of Bond In Inches Width Lgth. .200 .50 .200 .50 .200 .50 .255 1.0 .255 1.0 .500 1.2 .500 1.2 .500 1.2 .500 1.2 .923 2.0 .923 2.0 .923 2.0 .923 2.0 1.090 2.4 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.850 4.0 1.850 4.0
Size of Strands in Inches Thickness Width .024 0.50 .030 .050 .036 .050 .036 .073 .048 .073 .036 .072 .048 .088 .060 .086 .092 .096 .060 .099 .092 .096 .092 .144 .134 .148 .060 .096 .048 .067 .060 .107 .092 .104 .092 .137 .134 .142 .198 .201 .092 .165 .134 .149
Number of Diamonds In 12 Inches Width Lgth. 60 24 60 24 60 24 47 12 47 12 24 10 24 10 24 10 24 10 13 6 13 6 13 6 13 6 11 5 9.0 4 9.0 4 9.0 4 9.0 4 9.0 4 9.0 4 6.5 3 6.5 3 55.67 54.65 46.63 48.58 42.57 76.82 74.80 69.73 56.60 84.86 76.80 71.77 65.68 84.88 93.94 88.90 84.88 84.86 74.77 61.65 84.89 83.87
Percent Open Area
108 CHATHAM STEEL CORPORATION
13⁄16"-#24-F 48 lb. 13⁄16"-#22-R 61 lb. 13⁄16"-#20-F 73 lb. 11⁄4"-#20-F 11⁄4"-#18-F 11⁄2"-#20-F 11⁄2"-#18-F 11⁄2"-#16-F 11⁄2"-#13-F 13⁄4"-16 H-F 13⁄4"-#14-F 13⁄4"-#13-F 13⁄4"-# 9-F 1" -#16-F 11⁄2"-#16-F 11⁄2"-#14-F 11⁄2"-#13-F 11⁄2"-# 9-F
Standard Sizes In Feet Width Length 2 4 2 4 2 4 3-4 8 3-4 8 3-4 8 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10 3-4-6 8-10-12 3-4-6 8-10-12 4 8 4 8 3-4-6 8 3-4-6 8 3-4-6 8-10-12
Weight In Pounds Per Sq. Ft. Plain Galv. 1.485 — 1.606 — 1.727 — 1.83 1.24 1.11 1.65 1.40 1.51 1.66 1.88 1.82 1.00 1.40 1.62 1.51 1.71 1.63 1.75 1.75 1.86 1.71 1.86 1.41 1.50 1.38 1.44 1.46 1.56 1.57 1.68 1.14 1.28
Style Designation
Manufactured from Mild Carbon Steel
FLATTENED Size of Openings in Inches Width Lgth. 1.085 1.459 1.085 1.459 1.085 1.459 1.094 1.688 1.094 1.688 1.375 1.000 1.281 1.000 1.250 1.000 1.250 1.000 1.750 1.750 1.688 1.813 1.688 1.782 1.563 1.688 1.875 2.250 1.063 2.750 1.063 2.750 1.063 2.750 1.000 2.563
Center to Center of Bond In Inches Width Lgth. 1.200 1.520 1.200 1.520 1.200 1.520 1.255 1.031 1.255 1.031 1.500 1.260 1.500 1.260 1.500 1.260 1.500 1.260 1.923 2.100 1.923 2.120 1.923 2.100 1.923 2.120 1.090 2.562 1.330 3.200 1.330 3.200 1.330 3.200 1.330 3.200
Finished Thickness In Inches Thickness .019 .024 .029 .030 .040 .029 .039 .050 .070 .048 .061 .070 .120 .048 .048 .060 .070 .110
Number of Diamonds In 12 Inches Width Lgth. 60 23 60 23 60 23 47 11.64 47 11.64 24 9.5 24 9.5 24 9.5 24 9.5 13 5.7 13 5.62 13 5.62 13 5.62 11 4.684 9 3.8 9 3.8 9 3.8 9 3.747 39.45 39.45 39.45 46.49 39.42 70.73 67.70 59.62 55.58 74.77 69.72 72.75 62.65 76.79 81.84 81.84 78.81 75.78
Percent Open Area
CHATHAM STEEL CORPORATION 109
Column Insert Railing Insert Sheets
Style Designation
Standard Sizes In Feet Width SWDLength LWD 3-4-5-6 8-10-12 3-4-6 10 3-4-5-6 8-10 3-4-6 8-10 4-5-6 8-10 3-4-6 4-8-12 4 100"
Size of Openings in Inches Width Lgth. .938 3.438 1.625 4.875 .938 3.438 1.036 2.969 .813 3.375 .813 3.375 .813 3.375
Center to Center of Bond In Inches Width Lgth. 1.333 5.330 2.000 6.000 1.333 5.330 1.412 4.000 1.333 5.330 1.412 5.330 1.412 5.330
Size of Strands in Inches Thickness Width .183 .261 .250 .308 .215 .297 .243 .300 .250 .327 .312 .347 .312 .388
Weight In Pounds Per Sq. Ft. Plain Galv. 2.69 — 2.69 — 2.69 —
Standard Sizes In Inches Width SWDLength LWD 6-8-10 96 36 27 36-48-72 96
Size of Openings in Inches Width Lgth. 1.250 6.125 1.250 6.125 1.250 6.125
Center to Center of Bond In Inches Width Lgth. 1.500 5.330 1.500 5.330 1.500 5.330
Size of Strands in Inches Thickness Width .183 .264 .183 .264 .183 .264
Manufacturing from Mild Carbon Steel and Type 5052-H32 Aluminum
Weight In Pounds Per Sq. Ft. Plain Galv. 3.00 3.20 3.14 3.34 4.00 4.30 4.27 4.46 5.00 5.50 6.25 6.85 7.00 7.50
GRATING—REGULAR
3.0 lb.-R 3.14 lb.-R 4.0 lb.-R 4.27 lb.-R 5.0 lb.-R 6.25 lb.-R 7.0 lb.-R
Style Designation
GRATING—REGULAR Manufactured from Mild Carbon Steel and Type 5052-H32 Aluminum
Uses: Plant runways, catwalks, and working platforms.
Number of Diamonds In 12 Inches Width Lgth. 8 — 8 — 8 —
Number of Diamonds In 12 Inches Width Lgth. 9 2.25 6 2.00 9 2.25 8.5 3.00 9 2.25 8.5 2.25 8.5 2.25
65 65 65
Percent Open Area
70-76 70-74 62-70 56-62 49-54 52-60 55-64
Percent Percent Area
Installation is done quickly and easily by welding or bolting. Irregular shapes are easy to cut and place. The neat appearance, long life, and freedom from repair offered by open mesh floorings mean maintenance costs are at a minimum.
EXPANDED METAL WALKWAY, SKYWALK & GRATING
This is the most economical way to put strength, safety and nonslip surfaces underfoot. It is not pre-assembled, not welded, but sturdy, solid steel, cut and stretched from a single plate.
110 CHATHAM STEEL CORPORATION
CHATHAM STEEL CORPORATION
111
WELDED STEEL GRATING & TREADS Open steel flooring is manufactured of square-edge strips for your safety. This gives it a non-slip surface and permits light and air to pass through. It is made in several types: Standard Welded, Heavy Welded, Serrated, and is used universally where strong rigid flooring is desired. We can supply for immediate delivery. Welded Type in panels 24" and 36" wide and in lengths up to 24'. It can also be furnished in 36' lengths for special applications. Standard stock is painted black, but can easily be galvanized when required. Steel flooring can be cut to specified sizes, as requested. When ordering open steel flooring, specify the following: 1. Type of grating. 2. Depth and thickness of bearing bars. 3. Dimensions of area or areas to be covered. Unless otherwise specified, our standard tolerance of 1/4" will apply. 4. Span (direction of bearing bars). 5. Finish — mill unless otherwise specified. 6. Type of fasteners — if required. 7. Complete shipping instructions. 8. Drawing showing grating area and supports. 9. Specify whether drawings for approval and/or erection drawings are required. The best type for use where floors are subject to extreme corrosion or moisture — chemical plants, breweries and other process industries. There are no cracks, open joints, or holes in bars.
STANDARD
All/weld gratings are furnished with 5/16" twisted square cross bars.
Type
W/B
SPECIAL ORDER
Type
W/F Type
W/D Type
W/DF SERRATED ALL-WELD GRATING Where moisture, oil or grease are present, an extra measure of safety can be provided by using serrated All-Weld grating as pictured here.
Approved for all general purposes.
Same as Type W/B but with close cross bars for conditions where more steel area is required.
Close bearing bars. Best for heavy public traffic, or where smaller openings or increased carrying capacity are required.
With closer cross bar and bearing bars. For conditions requiring greatly reduced net opening.
13⁄4x11⁄8 13⁄4x13⁄16 13⁄4x11⁄8 13⁄4x13⁄16 11⁄4x11⁄8 11⁄4x13⁄16 11⁄2x11⁄8 11⁄2x13⁄16 13⁄4x13⁄16 21⁄4x13⁄16 21⁄4x13⁄16 21⁄2x13⁄16
13⁄4x11⁄8 13⁄4x13⁄16 13⁄4x11⁄8 13⁄4x13⁄16 11⁄2x11⁄8 11⁄4x13⁄16 11⁄2x11⁄8 11⁄2x13⁄16 13⁄4x13⁄16 21⁄4x13⁄16 21⁄4x13⁄16 21⁄2x13⁄16
B 1.4 2.0 1.9 2.6 2.3 3.2 2.8 3.9 4.5 5.1 5.7 6.3
5.2 7.5 6.3 9.1 7.4 10.8 12.5 14.1 15.8 17.4
6.1 8.4 7.2 10.0 8.3 11.7 13.4 15.0 16.7 18.3
WELDED D F 1.7 1.7 2.5 2.2 2.3 2.2 3.3 2.9 2.8 2.6 4.0 3.5 3.4 3.2 4.8 4.3 5.6 4.9 6.3 5.5 7.0 6.1 7.8 6.7
6.4 9.3 7.9 11.3 9.3 13.5 15.6 17.7 19.8 21.9
5.2 7.5 6.3 9.1 7.6 11.0 12.7 14.3 16.0 17.7
6.4 9.3 7.9 11.3 9.5 13.7 15.8 17.9 20.0 22.1
DF BB DD 2.0 2.6 3.1 2.7 3.8 4.7 2.6 3.4 4.2 3.5 5.0 6.2 3.1 4.2 5.2 4.3 6.5 7.6 3.8 5.2 6.3 5.2 7.4 9.2 5.9 8.6 10.8 6.7 9.8 12.1 7.4 11.0 13.5 8.1 12.2 14.8
7.3 10.2 8.8 12.2 10.2 14.4 16.5 18.6 20.7 22.8
WELDED W/B W/D W/F W/DF B D 4.1 5.0 5.0 5.9 3.9 4.8 5.8 7.2 6.7 8.1 5.7 7.0
4.4 5.6 5.8 6.1 6.4
4.1
3.7
BT
6.0 8.3 7.1 9.9 8.7 12.1 13.8 15.4 17.1 18.8
F 4.6 6.4 9.3 10.2 11.9 13.3 11.4 12.7 14.8 16.5 13.9 15.3 17.8 20.0 17.8 20.8 23.3 20.5 23.8 26.5 22.7 26.5 29.8 25.0 29.3 33.1
PRESSURE LOCKED BTL XX ZZ IB 1.9 2.7 3.1 2.5 3.4 3.5 4.1 1.9 3.1 3.7 4.4 5.1 2.3 3.7 3.9 5.3 6.2 2.6 4.9 6.1 7.2 3.0 5.1 7.1 8.2 3.4 5.4 7.8 9.1 3.8 5.7 8.6 10.0 4.0
7.2 10.1 8.7 12.2 10.6 14.8 16.9 19.0 21.1 23.2
3.2 3.7 4.2 4.6 4.9
2.8
2.3
ID
11.5 16.5 14.2 20.7 17.2 25.0 29.4 33.2 37.3 41.4
PRESSURE LOCKED DF XX ZZ BB DD 5.5 7.0 8.6 7.7 7.8 9.0 9.9 12.3 9.6
BTL
2.8 3.3 3.7 4.0 4.2
2.5
2.1
IF
12.3 15.5 16.4 17.2 18.0
3.4 3.9 4.4 4.9 5.1
2.9
2.5
IDF
10.9 13.9 14.5 15.1 15.7
11.4 10.2
10.5
BT
U 2.4 2.9 2.7 3.2 3.1 3.8 3.4 4.3 4.8 5.8 6.4 7.2
8.0 9.5 9.0 11.0 10.0 12.5 14.0 17.0 18.5 20.0
U 7.0 8.5 10.5 12.5 12.0 14.7 13.5 16.8 18.8 22.9 25.0 27.1
RIVETED UJ J 2.7 3.3 3.3 3.8 3.8 3.8 4.5 4.5 4.3 4.3 5.2 5.3 4.9 4.9 6.0 6.0 6.7 6.8 8.0 8.0 8.7 8.8 9.7 9.6
11.1 13.2 12.6 15.3 14.2 17.4 19.4 23.3 25.4 27.8
RIVETED UJ J 7.9 9.0 9.7 10.4
K 2.3 2.8 2.7 3.3 3.1 3.8 3.5 4.4 4.9 5.8 6.4 7.0
7.5 9.0 8.5 10.5 9.5 12.0 13.5 16.0 17.5 19.0
K 6.5 8.0
STEEL WEIGHTS PER SQUARE FOOT
SIZE NO. 1 2 3 4 5 6 7 8 9 10 11 12
SIZE NO. 1 2 3 4 5 6 7 8 9 10 11 12 112 CHATHAM STEEL CORPORATION
GRATING — Continued ALUMINUM WEIGHTS PER SQUARE FOOT
*1⁄4 thickness only on all I-bar sizes.
Steel treads only
11⁄4" Checkered Plate
11⁄4" Corratred
Aluminum Treads only
11⁄4" Abrasive
Steel and Aluminum Treads
*Steel Treads 13⁄4" up to and including 11⁄4" deep treads 21⁄4" for others Aluminum Treads 21⁄4" all depths 7 ⁄16" o/ hole & slot for 3⁄8" o/ bolt.
41⁄2 41⁄2 71⁄2 71⁄2 71⁄2
83⁄4 97⁄8 111⁄8 121⁄4
21⁄2
63⁄8 71⁄2
(DIMENSION A) HOLE CENTERS
RECTANGULAR B W/B IB
133⁄8
121⁄8
103⁄4
91⁄2
81⁄8
67⁄8
RIVETED TYPE K (1⁄16 B.B.)
TABLE OF STANDARD TREAD WIDTHS FOR: Steel grating with checkered plate nosing. Aluminum grating with corratred nosing. (Treads with abrasive nosings are 1⁄8" less in width)
CHATHAM STEEL CORPORATION 113
Stair treads are fabricated in any grating type, complete with carrier plates at each end of tread for bolting to stair stringers. Tread nosing makes the leading edge of each step stand out clearly. Serrated treads are recommended to eliminate hazardous footing conditions.
STAIR TREADS
Treads can be made to any specification required.
1
11⁄4x11⁄8
13⁄16x3⁄16
1
1 ⁄8x1 ⁄8
13⁄4x13⁄16
13⁄4x11⁄8
Size
Bearing Bar
U D C D U D C D U D C D U D C D U D C D
LOAD & DEFLECTIONS
386 .095 386 .076 578 .095 578 .076 686 .072 686 .057 1029 .072 1029 .057 1027 .057 1027 .046
2'-0"
247 .151 308 .119 370 .151 462 .119 439 .111 549 .090 659 .111 824 .090 686 .090 858 .072
2'-6"
172 .216 258 .173 258 216 386 .173 304 .159 457 .129 459 .159 686 .129 476 .129 716 .104
3'-0"
Span 126 .295 220 .234 188 .295 331 .234 224 .219 392 .176 338 .219 587 .176 350 .176 613 .141
3'-6" 96 .374 194 .308 144 .374 289 .308 171 .288 343 .231 257 .288 514 .231 268 .231 536 .183
4'-0" 76 .486 171 .389 115 .486 257 .389 135 .366 305 .293 203 .366 458 .293 212 .291 477 .233
4'-6"
5'0" 109 .451 275 .360 164 .451 412 .360 172 .358 430 .288
Span 5'6" 91 .547 250 .434 135 .547 375 .434 142 .433 390 .349
U—Safe uniform load in pounds per square foot. C—Safe concentrated load in pounds per foot of width. D—Deflection in inches.
6'0" 76 .673 228 .518 114 .673 343 .518 119 .520 358 .416
(Based on a minimum allowable fiber stress of 18,000 P.S.I.)
SAFE LOAD TABLE FOR STEEL GRATING
Span 6'6" 7'0" 101 87 .608 .704 330 306 .487 .565
114 CHATHAM STEEL CORPORATION
21⁄2x13⁄16
21⁄4x13⁄16
21⁄4x13⁄16
13⁄4x13⁄16
11⁄2x13⁄16
11⁄2x11⁄8
11⁄4x13⁄16
1608 .057 1608 .046 1544 .047 1544 .038
2321 .047 2321 .038
3151 .042 3151 .033
4116 .036 4116 .029
5209 .032 5209 .026
6432 .028 6432 .023
U D C D U D C D
U D C D
U D C D
U D C D
U D C D
U D C D
2'-0"
CONTINUATION OF PAGE 114
4115 .044 5147 .036
3332 .050 4167 .039
2633 .056 3292 .045
2016 .064 2521 .052
1485 .075 1856 .059
1028 .090 1285 .072 987 .075 1235 .059
2'-6"
2099 .088 3673 .071
1670 .098 2916 .079
1344 .111 2351 .088
1029 .126 1800 .101
758 .147 1325 .117
526 .176 918 141 505 .147 883 .117
3'-6"
1609 .116 3214 .092
1302 .127 2604 .102
1029 .144 2058 .115
788 .165 1575 .132
581 .192 1159 .154
403 .231 803 .183 387 192 772 .154
4'-0"
1271 .145 2858 .116
1028 .162 2314 .129
813 .183 1828 .145
622 .208 1400 .167
458 .243 1031 .195
318 .291 716 .233 306 .243 687 .195
4'-6"
1029 .180 2571 .144
835 .199 2082 .160
659 .226 1646 .180
505 .258 1260 .206
371 .300 928 .241
258 .358 644 .288 248 .300 619 .241
5'-0"
850 .217 2338 .173
689 .241 1892 .194
546 .273 1496 .217
416 .310 1145 .249
307 .365 844 .289
213 .433 585 .349 205 .365 563 .289
5'-6"
Spans to right of vertical line NOT RECOMMENDED.
2858 .064 4286 .051
2314 .072 3473 .057
1829 .081 2745 .064
1401 .092 2100 .074
1031 .106 1547 .087
716 .129 1073 .104 686 .106 1029 .087
3'-0"
720 .260 2141 .207
583 .287 1733 .230
460 .325 1370 .259
351 .371 1049 .297
260 .433 773 .347
179 .520 536 .416 172 .433 515 .347
6'-0"
613 .305 1977 .242
496 .338 1601 .270
393 .384 1266 .303
299 .435 969 .347
222 .506 714 .406
152 608 495 .487 149 .506 475 .406
6'-6"
529 .354 1836 .282
428 .393 1487 .314
339 .447 1175 .353
259 .506 899 .403
191 .587 663 .470
131 .704 459 .565 128 .587 441 .470
7'-0"
405 .465 1607 .369
327 .5121 1301 .410
258 .580 1027 .460
197 .664 786 .527
145 .774 581 .614
320 .586 1429 .467
259 .646 1157 .518
204 .732 914 .583
155 .838 700 .667
115 .978 515 .777
Span 8'-0" 9'0" 96 75 .774 .978 386 342 .614 .777
CHATHAM STEEL CORPORATION 115
SAFE LOAD TABLE FOR STEEL GRATING (Based on a minimum allowable fiber stress of 18,000 P.S.I.) U—Safe uniform load in pounds per square foot. C—Safe concentrated load in pounds per foot of width. D—Deflection in inches.
116
CHATHAM STEEL CORPORATION
NOTES
CHATHAM STEEL CORPORATION
107
EXPANDED METAL Expanded Metal is a single sheet of steel that has been cut and expanded by the action of a special knife which acts as both a cutting shear and forming die. The knife first pierces and slits the steel sheet, then expands these slits into the openings characteristic of Expanded Metal. It is lighter per foot and stronger per pound than the solid sheet of steel from which it is made. Being made from a solid sheet of steel, it can never ravel or fray. Its uses are many and varied: machine guards, storage bins, baskets, tool enclosures, platforms, stair treads, room dividers, lawn furniture, decorative grills, and many more.
STANDARD EXPANDED METAL (SAFE-T-MESH) This is the unflattened form of Expanded Metal. The diamond strands are rectangular and at a sharp angle to the original plane of the metal sheet from which they were formed, allowing maximum air circulation and visibility. It can be cut or formed to almost any size and shape required.
FLATTENED EXPANDED METAL Flattened Expanded Metal is formed by the same cutting and expanding operations used in making Safe-T-Mesh, but with the addition of one more step. After the metal is cut and expanded, it is passed through a series of rolls that flatten and smooth the strands and bridges. The resulting sheet of expanded metal is approximately two gauges thinner than the original sheet, although all the original metal is retained.
13⁄16"-#24-R 50 lb. 13⁄16"-#22-R 63 lb. 13⁄16"-#20-R 75 lb. 11⁄4"-#20-% 11⁄4"-#18-R 11⁄2"-#20-R 11⁄2"-#18-R 11⁄2"-#16-R 11⁄2"-#13-R 13⁄4"-16 H-R 13⁄4"-#13-R 13⁄4"-#10-R 13⁄4"-# 9-R 1" -#16-R 11⁄2"-#18-R 11⁄2"-#16-R 11⁄2"-#13-R 11⁄2"-#10-R 11⁄2"-# 9-R 11⁄2"-# 6-R 2" -#10-R 2" -# 9-R
Weight In Pounds Per Sq. Ft. Plain Galv. .500 — .625 — .750 — .86 1.29 1.14 1.71 .43 .59 .70 .85 .86 .97 1.47 1.73 .54 .65 .80 .92 1.20 1.36 1.80 1.95 .44 .51 .20 .25 .40 .48 .60 .68 .79 .89 1.20 1.31 2.50 2.73 .68 .75 .90 1.02
Standard Sizes In Feet Width Length 2 4 2 4 2 4 3-4 8 3-4 8 3-4-6 8 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 4 8-10-12 4 8-10-12 4 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 to order 8-10-12 8-10-12
Manufactured from Mild Carbon Steel
Style Designation
REGULAR Size of Openings in Inches Width Lgth. .166 .437 .166 .437 .166 .437 .172 .719 .172 .719 .438 .938 .438 .938 .375 .938 .313 .938 .813 1.750 .750 1.688 .750 1.625 .688 1.563 1.000 2.063 1.313 2.625 1.250 2.625 1.188 2.500 1.188 2.500 1.125 2.375 1.000 2.313 1.625 3.438 1.563 3.375
Center to Center of Bond In Inches Width Lgth. .200 .50 .200 .50 .200 .50 .255 1.0 .255 1.0 .500 1.2 .500 1.2 .500 1.2 .500 1.2 .923 2.0 .923 2.0 .923 2.0 .923 2.0 1.090 2.4 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.330 3.0 1.850 4.0 1.850 4.0
Size of Strands in Inches Thickness Width .024 0.50 .030 .050 .036 .050 .036 .073 .048 .073 .036 .072 .048 .088 .060 .086 .092 .096 .060 .099 .092 .096 .092 .144 .134 .148 .060 .096 .048 .067 .060 .107 .092 .104 .092 .137 .134 .142 .198 .201 .092 .165 .134 .149
Number of Diamonds In 12 Inches Width Lgth. 60 24 60 24 60 24 47 12 47 12 24 10 24 10 24 10 24 10 13 6 13 6 13 6 13 6 11 5 9.0 4 9.0 4 9.0 4 9.0 4 9.0 4 9.0 4 6.5 3 6.5 3 55.67 54.65 46.63 48.58 42.57 76.82 74.80 69.73 56.60 84.86 76.80 71.77 65.68 84.88 93.94 88.90 84.88 84.86 74.77 61.65 84.89 83.87
Percent Open Area
108 CHATHAM STEEL CORPORATION
13⁄16"-#24-F 48 lb. 13⁄16"-#22-R 61 lb. 13⁄16"-#20-F 73 lb. 11⁄4"-#20-F 11⁄4"-#18-F 11⁄2"-#20-F 11⁄2"-#18-F 11⁄2"-#16-F 11⁄2"-#13-F 13⁄4"-16 H-F 13⁄4"-#14-F 13⁄4"-#13-F 13⁄4"-# 9-F 1" -#16-F 11⁄2"-#16-F 11⁄2"-#14-F 11⁄2"-#13-F 11⁄2"-# 9-F
Standard Sizes In Feet Width Length 2 4 2 4 2 4 3-4 8 3-4 8 3-4 8 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10-12 3-4-6 8-10 3-4-6 8-10-12 3-4-6 8-10-12 4 8 4 8 3-4-6 8 3-4-6 8 3-4-6 8-10-12
Weight In Pounds Per Sq. Ft. Plain Galv. 1.485 — 1.606 — 1.727 — 1.83 1.24 1.11 1.65 1.40 1.51 1.66 1.88 1.82 1.00 1.40 1.62 1.51 1.71 1.63 1.75 1.75 1.86 1.71 1.86 1.41 1.50 1.38 1.44 1.46 1.56 1.57 1.68 1.14 1.28
Style Designation
Manufactured from Mild Carbon Steel
FLATTENED Size of Openings in Inches Width Lgth. 1.085 1.459 1.085 1.459 1.085 1.459 1.094 1.688 1.094 1.688 1.375 1.000 1.281 1.000 1.250 1.000 1.250 1.000 1.750 1.750 1.688 1.813 1.688 1.782 1.563 1.688 1.875 2.250 1.063 2.750 1.063 2.750 1.063 2.750 1.000 2.563
Center to Center of Bond In Inches Width Lgth. 1.200 1.520 1.200 1.520 1.200 1.520 1.255 1.031 1.255 1.031 1.500 1.260 1.500 1.260 1.500 1.260 1.500 1.260 1.923 2.100 1.923 2.120 1.923 2.100 1.923 2.120 1.090 2.562 1.330 3.200 1.330 3.200 1.330 3.200 1.330 3.200
Finished Thickness In Inches Thickness .019 .024 .029 .030 .040 .029 .039 .050 .070 .048 .061 .070 .120 .048 .048 .060 .070 .110
Number of Diamonds In 12 Inches Width Lgth. 60 23 60 23 60 23 47 11.64 47 11.64 24 9.5 24 9.5 24 9.5 24 9.5 13 5.7 13 5.62 13 5.62 13 5.62 11 4.684 9 3.8 9 3.8 9 3.8 9 3.747 39.45 39.45 39.45 46.49 39.42 70.73 67.70 59.62 55.58 74.77 69.72 72.75 62.65 76.79 81.84 81.84 78.81 75.78
Percent Open Area
CHATHAM STEEL CORPORATION 109
Column Insert Railing Insert Sheets
Style Designation
Standard Sizes In Feet Width SWDLength LWD 3-4-5-6 8-10-12 3-4-6 10 3-4-5-6 8-10 3-4-6 8-10 4-5-6 8-10 3-4-6 4-8-12 4 100"
Size of Openings in Inches Width Lgth. .938 3.438 1.625 4.875 .938 3.438 1.036 2.969 .813 3.375 .813 3.375 .813 3.375
Center to Center of Bond In Inches Width Lgth. 1.333 5.330 2.000 6.000 1.333 5.330 1.412 4.000 1.333 5.330 1.412 5.330 1.412 5.330
Size of Strands in Inches Thickness Width .183 .261 .250 .308 .215 .297 .243 .300 .250 .327 .312 .347 .312 .388
Weight In Pounds Per Sq. Ft. Plain Galv. 2.69 — 2.69 — 2.69 —
Standard Sizes In Inches Width SWDLength LWD 6-8-10 96 36 27 36-48-72 96
Size of Openings in Inches Width Lgth. 1.250 6.125 1.250 6.125 1.250 6.125
Center to Center of Bond In Inches Width Lgth. 1.500 5.330 1.500 5.330 1.500 5.330
Size of Strands in Inches Thickness Width .183 .264 .183 .264 .183 .264
Manufacturing from Mild Carbon Steel and Type 5052-H32 Aluminum
Weight In Pounds Per Sq. Ft. Plain Galv. 3.00 3.20 3.14 3.34 4.00 4.30 4.27 4.46 5.00 5.50 6.25 6.85 7.00 7.50
GRATING—REGULAR
3.0 lb.-R 3.14 lb.-R 4.0 lb.-R 4.27 lb.-R 5.0 lb.-R 6.25 lb.-R 7.0 lb.-R
Style Designation
GRATING—REGULAR Manufactured from Mild Carbon Steel and Type 5052-H32 Aluminum
Uses: Plant runways, catwalks, and working platforms.
Number of Diamonds In 12 Inches Width Lgth. 8 — 8 — 8 —
Number of Diamonds In 12 Inches Width Lgth. 9 2.25 6 2.00 9 2.25 8.5 3.00 9 2.25 8.5 2.25 8.5 2.25
65 65 65
Percent Open Area
70-76 70-74 62-70 56-62 49-54 52-60 55-64
Percent Percent Area
Installation is done quickly and easily by welding or bolting. Irregular shapes are easy to cut and place. The neat appearance, long life, and freedom from repair offered by open mesh floorings mean maintenance costs are at a minimum.
EXPANDED METAL WALKWAY, SKYWALK & GRATING
This is the most economical way to put strength, safety and nonslip surfaces underfoot. It is not pre-assembled, not welded, but sturdy, solid steel, cut and stretched from a single plate.
110 CHATHAM STEEL CORPORATION
CHATHAM STEEL CORPORATION
111
WELDED STEEL GRATING & TREADS Open steel flooring is manufactured of square-edge strips for your safety. This gives it a non-slip surface and permits light and air to pass through. It is made in several types: Standard Welded, Heavy Welded, Serrated, and is used universally where strong rigid flooring is desired. We can supply for immediate delivery. Welded Type in panels 24" and 36" wide and in lengths up to 24'. It can also be furnished in 36' lengths for special applications. Standard stock is painted black, but can easily be galvanized when required. Steel flooring can be cut to specified sizes, as requested. When ordering open steel flooring, specify the following: 1. Type of grating. 2. Depth and thickness of bearing bars. 3. Dimensions of area or areas to be covered. Unless otherwise specified, our standard tolerance of 1/4" will apply. 4. Span (direction of bearing bars). 5. Finish — mill unless otherwise specified. 6. Type of fasteners — if required. 7. Complete shipping instructions. 8. Drawing showing grating area and supports. 9. Specify whether drawings for approval and/or erection drawings are required. The best type for use where floors are subject to extreme corrosion or moisture — chemical plants, breweries and other process industries. There are no cracks, open joints, or holes in bars.
STANDARD
All/weld gratings are furnished with 5/16" twisted square cross bars.
Type
W/B
SPECIAL ORDER
Type
W/F Type
W/D Type
W/DF SERRATED ALL-WELD GRATING Where moisture, oil or grease are present, an extra measure of safety can be provided by using serrated All-Weld grating as pictured here.
Approved for all general purposes.
Same as Type W/B but with close cross bars for conditions where more steel area is required.
Close bearing bars. Best for heavy public traffic, or where smaller openings or increased carrying capacity are required.
With closer cross bar and bearing bars. For conditions requiring greatly reduced net opening.
13⁄4x11⁄8 13⁄4x13⁄16 13⁄4x11⁄8 13⁄4x13⁄16 11⁄4x11⁄8 11⁄4x13⁄16 11⁄2x11⁄8 11⁄2x13⁄16 13⁄4x13⁄16 21⁄4x13⁄16 21⁄4x13⁄16 21⁄2x13⁄16
13⁄4x11⁄8 13⁄4x13⁄16 13⁄4x11⁄8 13⁄4x13⁄16 11⁄2x11⁄8 11⁄4x13⁄16 11⁄2x11⁄8 11⁄2x13⁄16 13⁄4x13⁄16 21⁄4x13⁄16 21⁄4x13⁄16 21⁄2x13⁄16
B 1.4 2.0 1.9 2.6 2.3 3.2 2.8 3.9 4.5 5.1 5.7 6.3
5.2 7.5 6.3 9.1 7.4 10.8 12.5 14.1 15.8 17.4
6.1 8.4 7.2 10.0 8.3 11.7 13.4 15.0 16.7 18.3
WELDED D F 1.7 1.7 2.5 2.2 2.3 2.2 3.3 2.9 2.8 2.6 4.0 3.5 3.4 3.2 4.8 4.3 5.6 4.9 6.3 5.5 7.0 6.1 7.8 6.7
6.4 9.3 7.9 11.3 9.3 13.5 15.6 17.7 19.8 21.9
5.2 7.5 6.3 9.1 7.6 11.0 12.7 14.3 16.0 17.7
6.4 9.3 7.9 11.3 9.5 13.7 15.8 17.9 20.0 22.1
DF BB DD 2.0 2.6 3.1 2.7 3.8 4.7 2.6 3.4 4.2 3.5 5.0 6.2 3.1 4.2 5.2 4.3 6.5 7.6 3.8 5.2 6.3 5.2 7.4 9.2 5.9 8.6 10.8 6.7 9.8 12.1 7.4 11.0 13.5 8.1 12.2 14.8
7.3 10.2 8.8 12.2 10.2 14.4 16.5 18.6 20.7 22.8
WELDED W/B W/D W/F W/DF B D 4.1 5.0 5.0 5.9 3.9 4.8 5.8 7.2 6.7 8.1 5.7 7.0
4.4 5.6 5.8 6.1 6.4
4.1
3.7
BT
6.0 8.3 7.1 9.9 8.7 12.1 13.8 15.4 17.1 18.8
F 4.6 6.4 9.3 10.2 11.9 13.3 11.4 12.7 14.8 16.5 13.9 15.3 17.8 20.0 17.8 20.8 23.3 20.5 23.8 26.5 22.7 26.5 29.8 25.0 29.3 33.1
PRESSURE LOCKED BTL XX ZZ IB 1.9 2.7 3.1 2.5 3.4 3.5 4.1 1.9 3.1 3.7 4.4 5.1 2.3 3.7 3.9 5.3 6.2 2.6 4.9 6.1 7.2 3.0 5.1 7.1 8.2 3.4 5.4 7.8 9.1 3.8 5.7 8.6 10.0 4.0
7.2 10.1 8.7 12.2 10.6 14.8 16.9 19.0 21.1 23.2
3.2 3.7 4.2 4.6 4.9
2.8
2.3
ID
11.5 16.5 14.2 20.7 17.2 25.0 29.4 33.2 37.3 41.4
PRESSURE LOCKED DF XX ZZ BB DD 5.5 7.0 8.6 7.7 7.8 9.0 9.9 12.3 9.6
BTL
2.8 3.3 3.7 4.0 4.2
2.5
2.1
IF
12.3 15.5 16.4 17.2 18.0
3.4 3.9 4.4 4.9 5.1
2.9
2.5
IDF
10.9 13.9 14.5 15.1 15.7
11.4 10.2
10.5
BT
U 2.4 2.9 2.7 3.2 3.1 3.8 3.4 4.3 4.8 5.8 6.4 7.2
8.0 9.5 9.0 11.0 10.0 12.5 14.0 17.0 18.5 20.0
U 7.0 8.5 10.5 12.5 12.0 14.7 13.5 16.8 18.8 22.9 25.0 27.1
RIVETED UJ J 2.7 3.3 3.3 3.8 3.8 3.8 4.5 4.5 4.3 4.3 5.2 5.3 4.9 4.9 6.0 6.0 6.7 6.8 8.0 8.0 8.7 8.8 9.7 9.6
11.1 13.2 12.6 15.3 14.2 17.4 19.4 23.3 25.4 27.8
RIVETED UJ J 7.9 9.0 9.7 10.4
K 2.3 2.8 2.7 3.3 3.1 3.8 3.5 4.4 4.9 5.8 6.4 7.0
7.5 9.0 8.5 10.5 9.5 12.0 13.5 16.0 17.5 19.0
K 6.5 8.0
STEEL WEIGHTS PER SQUARE FOOT
SIZE NO. 1 2 3 4 5 6 7 8 9 10 11 12
SIZE NO. 1 2 3 4 5 6 7 8 9 10 11 12 112 CHATHAM STEEL CORPORATION
GRATING — Continued ALUMINUM WEIGHTS PER SQUARE FOOT
*1⁄4 thickness only on all I-bar sizes.
Steel treads only
11⁄4" Checkered Plate
11⁄4" Corratred
Aluminum Treads only
11⁄4" Abrasive
Steel and Aluminum Treads
*Steel Treads 13⁄4" up to and including 11⁄4" deep treads 21⁄4" for others Aluminum Treads 21⁄4" all depths 7 ⁄16" o/ hole & slot for 3⁄8" o/ bolt.
41⁄2 41⁄2 71⁄2 71⁄2 71⁄2
83⁄4 97⁄8 111⁄8 121⁄4
21⁄2
63⁄8 71⁄2
(DIMENSION A) HOLE CENTERS
RECTANGULAR B W/B IB
133⁄8
121⁄8
103⁄4
91⁄2
81⁄8
67⁄8
RIVETED TYPE K (1⁄16 B.B.)
TABLE OF STANDARD TREAD WIDTHS FOR: Steel grating with checkered plate nosing. Aluminum grating with corratred nosing. (Treads with abrasive nosings are 1⁄8" less in width)
CHATHAM STEEL CORPORATION 113
Stair treads are fabricated in any grating type, complete with carrier plates at each end of tread for bolting to stair stringers. Tread nosing makes the leading edge of each step stand out clearly. Serrated treads are recommended to eliminate hazardous footing conditions.
STAIR TREADS
Treads can be made to any specification required.
1
11⁄4x11⁄8
13⁄16x3⁄16
1
1 ⁄8x1 ⁄8
13⁄4x13⁄16
13⁄4x11⁄8
Size
Bearing Bar
U D C D U D C D U D C D U D C D U D C D
LOAD & DEFLECTIONS
386 .095 386 .076 578 .095 578 .076 686 .072 686 .057 1029 .072 1029 .057 1027 .057 1027 .046
2'-0"
247 .151 308 .119 370 .151 462 .119 439 .111 549 .090 659 .111 824 .090 686 .090 858 .072
2'-6"
172 .216 258 .173 258 216 386 .173 304 .159 457 .129 459 .159 686 .129 476 .129 716 .104
3'-0"
Span 126 .295 220 .234 188 .295 331 .234 224 .219 392 .176 338 .219 587 .176 350 .176 613 .141
3'-6" 96 .374 194 .308 144 .374 289 .308 171 .288 343 .231 257 .288 514 .231 268 .231 536 .183
4'-0" 76 .486 171 .389 115 .486 257 .389 135 .366 305 .293 203 .366 458 .293 212 .291 477 .233
4'-6"
5'0" 109 .451 275 .360 164 .451 412 .360 172 .358 430 .288
Span 5'6" 91 .547 250 .434 135 .547 375 .434 142 .433 390 .349
U—Safe uniform load in pounds per square foot. C—Safe concentrated load in pounds per foot of width. D—Deflection in inches.
6'0" 76 .673 228 .518 114 .673 343 .518 119 .520 358 .416
(Based on a minimum allowable fiber stress of 18,000 P.S.I.)
SAFE LOAD TABLE FOR STEEL GRATING
Span 6'6" 7'0" 101 87 .608 .704 330 306 .487 .565
114 CHATHAM STEEL CORPORATION
21⁄2x13⁄16
21⁄4x13⁄16
21⁄4x13⁄16
13⁄4x13⁄16
11⁄2x13⁄16
11⁄2x11⁄8
11⁄4x13⁄16
1608 .057 1608 .046 1544 .047 1544 .038
2321 .047 2321 .038
3151 .042 3151 .033
4116 .036 4116 .029
5209 .032 5209 .026
6432 .028 6432 .023
U D C D U D C D
U D C D
U D C D
U D C D
U D C D
U D C D
2'-0"
CONTINUATION OF PAGE 114
4115 .044 5147 .036
3332 .050 4167 .039
2633 .056 3292 .045
2016 .064 2521 .052
1485 .075 1856 .059
1028 .090 1285 .072 987 .075 1235 .059
2'-6"
2099 .088 3673 .071
1670 .098 2916 .079
1344 .111 2351 .088
1029 .126 1800 .101
758 .147 1325 .117
526 .176 918 141 505 .147 883 .117
3'-6"
1609 .116 3214 .092
1302 .127 2604 .102
1029 .144 2058 .115
788 .165 1575 .132
581 .192 1159 .154
403 .231 803 .183 387 192 772 .154
4'-0"
1271 .145 2858 .116
1028 .162 2314 .129
813 .183 1828 .145
622 .208 1400 .167
458 .243 1031 .195
318 .291 716 .233 306 .243 687 .195
4'-6"
1029 .180 2571 .144
835 .199 2082 .160
659 .226 1646 .180
505 .258 1260 .206
371 .300 928 .241
258 .358 644 .288 248 .300 619 .241
5'-0"
850 .217 2338 .173
689 .241 1892 .194
546 .273 1496 .217
416 .310 1145 .249
307 .365 844 .289
213 .433 585 .349 205 .365 563 .289
5'-6"
Spans to right of vertical line NOT RECOMMENDED.
2858 .064 4286 .051
2314 .072 3473 .057
1829 .081 2745 .064
1401 .092 2100 .074
1031 .106 1547 .087
716 .129 1073 .104 686 .106 1029 .087
3'-0"
720 .260 2141 .207
583 .287 1733 .230
460 .325 1370 .259
351 .371 1049 .297
260 .433 773 .347
179 .520 536 .416 172 .433 515 .347
6'-0"
613 .305 1977 .242
496 .338 1601 .270
393 .384 1266 .303
299 .435 969 .347
222 .506 714 .406
152 608 495 .487 149 .506 475 .406
6'-6"
529 .354 1836 .282
428 .393 1487 .314
339 .447 1175 .353
259 .506 899 .403
191 .587 663 .470
131 .704 459 .565 128 .587 441 .470
7'-0"
405 .465 1607 .369
327 .5121 1301 .410
258 .580 1027 .460
197 .664 786 .527
145 .774 581 .614
320 .586 1429 .467
259 .646 1157 .518
204 .732 914 .583
155 .838 700 .667
115 .978 515 .777
Span 8'-0" 9'0" 96 75 .774 .978 386 342 .614 .777
CHATHAM STEEL CORPORATION 115
SAFE LOAD TABLE FOR STEEL GRATING (Based on a minimum allowable fiber stress of 18,000 P.S.I.) U—Safe uniform load in pounds per square foot. C—Safe concentrated load in pounds per foot of width. D—Deflection in inches.
116
CHATHAM STEEL CORPORATION
NOTES
