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A cable rack arm and support system suitable for underground power and communication service is made from a non-metallic polymer that will not rust or corrode. The cable rack arm is adapted for mounting to existing underground stanchions or for stanchions of a more modern design. Each cable rack arm

A cable rack arm and support system suitable for underground power and communication service is made from a non-metallic polymer that will not rust or corrode. The cable rack arm is adapted for mounting to existing underground stanchions or for stanchions of a more modern design. Each cable rack arm is securely mounted to the stanchion. Each cable rack arm then supports one or more cables in cable rests or saddles molded atop the arm, thus keeping the cables accessibly organized in a manhole, tunnel or vault. Plastic cable ties may be used to secure the cables to the cable rack arms. Nonmetallic pins may also be used to secure the cable rack arms to the stanchions. The stanchions may be made of nonmetallic composite material that includes a fiberglass cross-layered knitted apertured mat for increased strength.

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1. A nonmetallic cable support system, comprising: a nonmetallic stanchion comprising a web having a rectangular cross section and at least two nonmetallic parallel flanges perpendicular to the web and joined to the web and forming corners with the web to form a nonmetallic support stanchion, wherei

1. A nonmetallic cable support system, comprising: a nonmetallic stanchion comprising a web having a rectangular cross section and at least two nonmetallic parallel flanges perpendicular to the web and joined to the web and forming corners with the web to form a nonmetallic support stanchion, wherein the stanchion comprises at least one layer of fiber reinforcement perpendicular plus or minus 15 degrees to a length of the stanchion, wherein the flanges further comprise at least two orifices penetrating the flanges for mounting a nonmetallic cable rack arm and wherein the web further comprises at least one orifice penetrating the web for attaching the nonmetallic support stanchion to a formation selected from the group consisting of a wall, a column, a structure or a surface; anda cable rack arm for mounting on the non-metallic stanchion, the cable rack arm comprising:an upper portion formed between a proximal end and a distal end of the cable rack arm, the upper portion adapted for holding at least one cable;a lower portion opposite the upper portion, the lower portion formed at an acute angle to the upper portion;a web connecting the upper portion to the lower portion; andan interface near the proximal end, the interface comprising horizontal orifices and a vertical slot connected with the horizontal orifices, the vertical slot further comprising side reliefs adjoining a proximal end surface of the arm, the interface suitable for mounting the rack arm on a single flange stanchion, a TEE-bar stanchion, an L-angle stanchion, an E-channel stanchion and a C-channel stanchion, wherein an outer surface of the proximal end is formed at an angle to a top surface of the upper portion, the angle selected from the group consisting of an acute angle, a right angle and an obtuse angle. 2. The nonmetallic support stanchion of claim 1, further comprising a third nonmetallic parallel flange perpendicular to the web and joined to the web, the stanchion having a cross section in a shape of a letter E. 3. The nonmetallic cable support system of claim 1, wherein the nonmetallic flanges and web comprise a polymer material comprising a reinforcement selected from the group consisting of glass fibers, carbon fibers, and a combination of glass and carbon fibers. 4. The nonmetallic cable support system of claim 1, wherein the nonmetallic stanchion is manufactured utilizing a method selected from the group consisting of pultrusion, compression molding, transfer molding, rim molding and injection molding. 5. The nonmetallic cable support system of claim 1, wherein the nonmetallic stanchion comprises a composite material with a reinforcement of multiple fiber roving tows oriented along the length of the stanchion. 6. The nonmetallic cable support system of claim 1, wherein the cable rack arm is made as a single piece of non-metallic material. 7. The nonmetallic cable support system of claim 1, further comprising a nonmetallic pin for securing the nonmetallic cable rack arm to the nonmetallic support stanchion. 8. The nonmetallic cable support system of claim 1, wherein the nonmetallic stanchion comprises a composite material with at least one cross-layered apertured mat. 9. The non-metallic cable support system of claim 1, wherein the interface includes a top relief allowing upward rotation of the cable rack arm from a horizontal position when mounted to the single flange stanchion, the TEE-bar stanchion, the L- angle stanchion or the E-channel stanchion. 10. The non-metallic cable support system of claim 1, further comprising a plurality of ribs extending from the web to the upper portion and the flanged lower portion. 11. A nonmetallic cable support system, comprising: a nonmetallic stanchion comprising a web having a rectangular cross section and at least two nonmetallic flanges perpendicular to the web and joined to outer edges of the web and forming corners with the web to form a nonmetallic support stanchion, wherein the stanchion further comprises at least one first layer of glass fiber reinforcement perpendicular plus or minus 15 degrees to a length of the stanchion and a second layer of glass fiber reinforcement perpendicular to the at least one first layer of glass reinforcement; anda resin filling voids within the stanchion; and further comprising a cable rack arm, the cable rack arm integrally comprising:an upper portion formed between a proximal end and a distal end of the cable rack arm, the upper portion adapted for holding at least one cable;a flanged lower portion opposite the upper portion, the lower flanged portion formed at an acute angle to the upper portion;a gusset between the upper and lower portions and connected to and supporting the upper portion; andan interface near the proximal end, the interface comprising horizontal orifices and a vertical slot connected with the horizontal orifices, the vertical slot further comprising contiguous side reliefs on both sides of the vertical slot adjoining a proximal end surface of the arm, the interface suitable for mounting the rack arm on a stanchion, wherein the interface includes a contiguous top relief allowing upward rotation of the cable rack arm from a horizontal position when mounted to the stanchion. 12. The nonmetallic cable support system of claim 11, wherein the at least one first and second layers of glass reinforcement are tied together with a material and a technique selected from the group consisting of knitted yarn, purled yarn, stitched yarn and woven yarn. 13. The nonmetallic cable support system of claim 11, further comprising glass fiber reinforcements of a surfacing veil on at least one surface of the stanchion. 14. The nonmetallic cable support system of claim 11, wherein the nonmetallic support stanchion comprises at least 40% glass fiber by weight. 15. The nonmetallic cable support system of claim 11, further comprising a pin adapted for mounting the at least one cable rack arm to the nonmetallic support stanchion. 16. The non-metallic support system of claim 11, wherein the gusset further comprises a plurality of reinforcing ribs. 17. The non-metallic support system of claim 11, wherein the upper portion is adapted for holding at least one cable by further comprising at least one cable saddle. 18. The non-metallic support stanchion system of claim 11, wherein the upper portion comprises a plurality of cable saddles separated by at least one flat section.