1、ANSI C335.35 88 W 0724350 0504982 820 ANSI C135.35-1988 f 4 I I F 4 8 for zinc-coated ferrous cable racks and cable rack hooks for underground line construction Approved March 2, 1988 Secretariat: National Electrical Manufacturers Association 1 1 Scope This standard covers several types and sizes of
2、 cable racks and cable rack hooks that are used to support current carrying cables in underground manholes, vaults, and tunnels. 2 Normative references The following standard contains provisions which, through reference in this text, constitute provisions of this American National Standard. At the t
3、ime of publication, the edition indicated was valid. All Standards are subject to revi- sion, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent editions of the standard indicated below. ANSVASTM Al 53-82, Spec
4、ification for zinc coating (hot-dip) on iron and steel hardware). Page 1 of 10 pages 3 General The cable racks and cable rack hooks covered by this standard shall conform in all respects to the requirements hereinafter stated. The text, standards references, and figures supplement each other, and al
5、l shall be considered as parts of this standard. 4 Material 4.1 Cable racks and cable rack hooks shall be made from hot-rolled steel which has been pro- duced by the open-hearth, basic-oxygen, or electric-furnace process or from ferrous cast- ings which are of a grade and quality suitable to meet th
6、e requirements of this standard. 4.2 Clevis pins and cotter bolts shall be made from hot-rolled steel which has been produced by the open-hearth, basic-oxygen, or electric-furnace process and which is of 1) This standard has been administratively withdrawn. Contact the secretariat for more recent in
7、formation. An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in
8、any respect preclude anyone, whether he has approved the standard or not, from manufac- turing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review and users are cautioned to obtain the latest e
9、ditions. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the Am
10、erican National Standards Institute. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date
11、 of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute. - Copyright 1992 by eMs American National Standards Institute, 11 West 42nd Street, New York, N.Y. 10036 ANSI2C992QO ANSI C135.35
12、88 W 0724150 0504983 7b7 W Page 2 of 1 O pages grade and quality suitable to meet the require- ments of this standard. 4.3 Cotters for clevis pins and cotter bolts shall be of the self-locking type and shall be made from corrosion-resistant materials. 7.4 No section of any finished part shall exhibi
13、t any brittleness by fracturing or crack- ing when struck once sharply and vigorously with a 2-pound hammer. 8 Galvanizing 5 Types This standard covers the types of cable racks and cable rack hooks shown in figures 1 through 7. Figure 8 is for information only and illustrates the types of insulators
14、 which may be used with the hooks shown in figures 1,2, 3, 5, 6, and 7. Insulator material is not a part of this standard. 8.1 Cable racks and cable rack hooks shall be hot-dip galvanized after fabrication in accor- dance with ANSVASTM Al 53-82. 8.2 Clevis pins and cotter bolts shall be galva- nized
15、 in accordance with the same standard except that the hole for the cotter may be drilled after galvanizing. 6 Dimensions 9 Other coatings Dimensions shall be as shown in figures 1 through 7. 7 Strength 7.1 Cable racks and cable rack hooks shall be of sufficient strength to support the loads spec- if
16、ied in figures 1 through 7 and meet the deflec- tion requirements of 7.2 and 7.3. 7.2 Cable rack hooks shall be mounted in the top hole or slot of the proper rack, which, in turn, shall be mounted on a rigid support by bolts at the ends. The load specified in the applicable figure shall be applied 1
17、 inch from the outermost end of the hook. The deflection shall be measured in line with the load and with the load applied and shall not exceed that shown in the applicable figure. 7.3 Cable racks shall resist the loads placed upon the cable rack hooks without undue deflection away from the supporti
18、ng structure. When an additional coating of rubber or plastic is applied to hooks to protect cable coverings from abrasion, such coatings shall be applied after the hook is galvanized in accordance with 8.1. 10 Finish Cable racks, cable rack hooks, clevis pins, and cotter bolts shall be free of shar
19、p edges and projections. Cotters shall be cut square and shall be free of sharp projections. 11 Marking Each bundle or shipping container shall be marked with the manufacturers name and cat- alog number. ANSI C135.35-1988 ANSI Clt35.35 88 0724350 0504984 bT3 D Number of slots # 1 Dimension Ad in 1-1
20、R-inch slots 2-114-inch slots Page 3 of 1 O pages 10 11 14 18 24 / ON FLANGE CENTERLINE .- 19-112 21 25-112 31 -112 40-1 /2 II / SLOTON FLANGE e- CENTERLINE 14 VALTERN ATE OFFSET FLANGE TOPVIEW FOR RIBBED INSULATOR TYPE 2 - 26-1 I4 28-112 35-1/4 44-1 /4 57-314 I Slot I Extey;iond Type number Maximum
21、 deflection in 7-314 18-318 1 1-314 16-112 13 7 400 400 200 400 400 200 311 6 318 311 6 511 6 318 318 Rack 2-114 x 2-1/4“ x 114“ Tee (a) Formed Strip Steel Hook (b) ALLOWABLE VARIATIONS: a = 1/64 inch c = 1/16 inch f = 114 inch b = 1/32 inch d = 118 inch x = O inch A single-letter superscript indica
22、tes that the plus and minus values are the same: for example, a = f1164 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter: for example, ax = +1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators.
23、Figure i - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 Page 4 of 1 O pages 1. d 252 in 2 - fi incx DIA HOLES - A - EA: RACK ON FLANGE CENTERLINE Rack 2.114 x 2-1/4“ x 114“ Tee (a) /I Maximum 6 400 518 10-1/2 15 Formed strip steel hook (b) 3 - in MIN DIA 16 3/gWaDia x 1 -1/
24、4“= cotter bolt with self-locking cotter 1/8“ x 1“ (cl a = 1/64 inch b = 1/32 inch c = 1/16 inch d = 118 inch f = 114 inch x = O inch ALLOWABLE VARIATIONS: A single-letter superscript indicates that the plus and minus values are the same: for example, a = f1164 inch. A double-letter superscript indi
25、cates that the plus value is that of the first letter and the minus value is that of the second letter: for example, ax = + 1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators. Figure 2 - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI C135.35 88 m 0724150 0
26、504986 476 m Minimum extension in 5-1 /4 10-114 76 22 Page 5 of 1 O pages Maximum Load deflection Ib in 400 318 400 112 200 518 1 O0 518 G HOLES EACH RACK 2 4 6 Dimension Ad Number of slots 8 9 24 27 40 45 Rack 4“ x 1 -9/16“ x 311 6“ Channel (a) EXTENSION t i ALLOWABLE VA RIATI ON S : a = 1/64 inch
27、b = 1/32 inch c = 1 i1 6 inch d = 118 inch f = 114 inch x = O inch A single-letter superscript indicates that the plus and minus values are the same: for example, a =-f 1/64 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the
28、 second letter: for example, ax = + 1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators. Figure 3 - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI C335.35 88 m 0724350 0504987 302 m AC in Page 6 of 1 O pages c Extensionfd Load Ib in Number of slots 3 3 6 8
29、14 20 22-1 311 6 500 15-1 311 6 300 22-1 311 6 300 2 in MIN DIA HOLES /4 - ON 18 inf CENTERS t in0 DIA HOLES _t 16 ON 3 inc CENTERS / / 36 i 54 Rack 2“ x 1“ x 3/16 Channel (a) ALLOWABLE VARIATIONS: -1 L Maximum deflect ion in 1 I2 112 1 I2 1 I I Formed round steel hook (b) a = 1/64 inch b = 1/32 inc
30、h c = 1 116 inch d = 118 inch f = 114 inch x = O inch A single-letter superscript indicates that the plus and minus values are the same: for example, a = f1/64 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter
31、 for example, ax = + 1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators. Figure 4 - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI CL35.35 88 m 0724150 0504988 249 Number of slots 1 3 5 7 1 Ad in 6-112 15-112 24- 112 33- 112 Page 7 of 1 O pages Extensionf
32、d in 2- I incx DIA EACH RACK Maximum Load deflection Ib in HOLES 17 200 112 Rack 3“ x 1-3/8“ x 3/16 Channel (a) 114 I 11-112 Formed strip steel hook (b) ALLOWABLE VARIATIONS: a = 1/64 inch c = 1/16 inch f = 114 inch b = 1/32 inch d = 118 inch x = O inch A single-letter superscript indicates that the
33、 plus and minus values are the same: for example, a = f1/64 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter: for example, ax = + 1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators. Figure 5 -
34、Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI CL35.35 88 m 0724350 0504989 185 m Number of holes 1 5 5 5 5 6 6 9 9 11 13 Page 8 of 1 O pages Spacing between holes in - 3-112 7 8 9 5 8 3-1 I2 7 2 3-112 Ad 400 300 200 400 # / - i ia 318 318 1 I4 2 - in MIN DIA HOLES EACH
35、RACK ON CENTERLINE OF FLAT 7 inCxDIA HOLES 16 1 BUTTON TYPE - Ad in HOOKTYPE ENGAGEMENT I P 13 27 41 45 48 38 53 41 69 33-1 I8 55 - 4 EXTENSIONfd 1 Maximum 4 12 15 a Rack 1-314“ x 318“ Flat (a) ALLOWABLE VARIATIONS: a = 1/64 inch c = 1/16 inch b = 1/32 inch d = 1/8 inch A single-letter superscript i
36、ndicates that the plus and minus values are Malleable iron hook (b) f = 114 inch x = O inch he same: for example, a = f 164 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second letter: for example, ax = + 1/64 inch, -0
37、inch. NOTE - See figure 8 for applicable insulators. 0 L a a Figure 6 - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI C335.35 88 m 0724350 0504990 9T7 m Extensionfd in 4 7-1 12 10 14 18 Page 9 of 1 O pages Maximum Load deflection Ib in 600 318 400 318 300 318 300 1 200
38、1 inxc SLOTS 18 SLOT - - - NUMBER 9= OF SLOTS, IF ANY VARIES WITH HOOK LENGTH Number of slots Ad in 8 14 18 37 43 47 54 13-1 /2 22-1 /2 28-1 /2 Hook Slots Used as Mounting Holes I Rack 1 112“ x 9/16“ x 3/16“ Channel (a) I I I Formed strip steel hooks (b) ALLOWABLE VARIATIONS: a = 1/64 inch c = 1/16
39、inch f = 114 inch b = 1/32 inch d = 118 inch x = O inch A single-letter superscript indicates that the plus and minus values are the same: for example, a = f1/64 inch. A double-letter superscript indicates that the plus value is that of the first letter and the minus value is that of the second lett
40、er: for example, ax = +1/64 inch, -0 inch. NOTE - See figure 8 for applicable insulators. Figure 7 - Zinc-coated ferrous cable racks and cable rack hooks ANSI C135.35-1988 ANSI C335.35 88 W 0724150 0504993 833 W Page 1 O of 1 O pages U Insulators for figure 1 (a) Insulators for figures 2, 5 and 6 (b
41、) Insulators for figures 3 and 5 (cl U U U Insu.Jtors for figure 7 (d) NOTE - Definite dimensions for insulators should be requested from the supplier because of the many variations in cable diameters, hook widths, and lengths of the insulator along the hook. Figure 8 - Insulators for zinc-coated ferrous cable racks and cable rack hooks ANSI Ci 35.35-1 988
