630TRAFFIC SIGNS AND SIGN SUPPORTS

626.05 Method of Measurement. The Department will measure Barrier

Reflector by the number of each in place, completed and accepted. If a bi -directional reflector consists of two one -way reflectors mounted back -to- back, the Department will measure it as one bi -directional reflector.

626.06 Basis of Payment. The Department will pay for accepted qua ntities at

the contract prices as follows: Item Unit Description 626 Each Barrier Reflector , Type ____ , (One -Way or Bi -Directional) ITEM 630 TRAFFIC SIGNS AND SI GN SUPPORTS

630.01 Description

630.02 Materials

630.03 Shop Drawings

630.04 Sign Fabrication

630.05 Foundations

630.06 Sign Supports

630.07 Sign Erection

630.08 Sign Shipment and Storage

630.09 Specific Service and Tourist -Oriented Directional Signs

630.10 Covering of Signs

630.12 Removal and Delivery, Storage, Reerection, or Disp osal of Signs

and Supports

630.13 Inspection

630.14 Method of Measurement

630.15 Basis of Payment

630.01 Description. This work consists of furnishing and installing traffic signs,

sign supports, and foundations complete and ready for service. This work a lso includes necessary excavation and backfill, disposal of discarded materials, and restoration of disturbed facilities and surfaces to a condition equal to that existing before this work started. 630.02 580 630.02 Materials. The acceptance of materials and products is based on Certified Test Data, furnished in triplicate, or on test results of samples according to 106.02, as required by the Laboratory. Transfer manufacturers’ guarantees or warranties on all traffic sign material to the Department or other maintainin g agency upon completion and acceptance of the project. Furnish materials conforming to: Concrete, Class QC Misc or QC 1 ....................... 499, 511 Steel: Structural steel ................................ ................... 711.01 Reinforcing steel ................................ ................ 509.02 U-channel posts ................................ ............... 730.015 Square posts ................................ ..................... 730.016 Wooden Box Beam……………………………730.017 Tube and pipe ................................ .................... 730.01 Anchor bolts and nuts ................................ ........ 730.02 Poles and arms ................................ ................... 730.03 Base and arm plates ................................ ........... 730.04 Handhole covers ................................ ................ 730.05 Pole caps ................................ ............................ 730.06 Arm caps ................................ ........................... 730.07 Hardware ................................ ........................... 730.08 Stainless steel ................................ .................... 730.09 Stainless steel hardware ................................ ..... 730.10 Messenger wire ................................ .................. 732.18 Aluminum: Sheet and plate ................................ ................... 730.11 Extrusions ................................ .......................... 730.12 Tube and pipe ................................ .................... 730.13 Castings ................................ ............................. 730.14 Forgings ................................ ............................. 730.15 Welding rods ................................ ..................... 730.16 Hardware ................................ ........................... 730.17 Other materials: Decals ................................ ................................ 725.21 Reflective sheeting, Type F ............................... 730.18 Reflective she eting, Type G .............................. 730.19 Reflective sheeting, Type H ............................ 730.192 Reflective sheeting, Type J .............................. 730.193 Nonreflective acrylic opaque sheeting .............. 730.20 Silk screen inks ................................ .................. 730.22 Transparent acrylic electronic cuttable films .... 730.23

630.03 Shop Drawings. Furnish shop drawings according to 625.06. Submit

sign support shop drawings that cover all design types such as ground mounted, rigid overhead, span wire mounted, and overpass structure mounted supports. On the drawings, show overall hei ght, sign clearance above foundation, span length, sign locations, sign overall heights and widths, and glare shield height and location, if applicable . 630.04 581 630.04 Sign Fabrication. Sign types include flat sheet, double faced, extrusheet, and temporary overlay . Flat sheet signs consist of one -piece units made of aluminum. Double faced signs consist of flat sheet aluminum or extruded aluminum blanks with legend on both sides. Extrusheet signs consist of a number of horizontal panels assembled to form a complete sign. Temporary overlay signs consist of an aluminum sheet covering portions or entire surfaces of extrusheet signs. Prior to reflective sheeting application, clean aluminum sign surfaces either by total immersion in a tank containing an alkaline solution of the manufacturer’s specification or by steam cleaning with an alkaline solution of the manufacturer’s specification, followed by a thorough rinsing with running water. After cleaning, etch the surface with an acid solution, and dry. Do not allow cleaned and etched surfaces to become contaminated by contact with oil or grease. Drill or punch bolt holes to finish size. Use sign designs according to the OMUTCD and the Sign Designs and Markings Manual. Use the Standard Alphabets for Traffic Control Devices for positive contrast legends on all guide signs . Do not revise overall sign sizes from what is shown in the plans. The edge spac e between the border and the text may be adjusted from what is normally used to achieve the sign widths shown. For negative contrast legends, use the Standard Alphabets for Traffic Control Devices. Use capital legends and upper/lower case legends in acco rdance with the Sign Designs and Markings Manual. When either is permitted in the Sign Designs and Markings Manual, use upper/lower case legends . For flat sheet, double faced mile marker, double faced street name and ground mounted extrusheet signs, use T ype G, H or J reflective sheeting for background and reflective legends. For overhead extrusheet signs, use Type G, H or J reflective sheeting for the background, and use Type H or J reflective sheeting for reflective legends, shields and symbols (includin g hazardous material plaque, airport symbol, arrows and borders). Apply reflective sheeting to the surface according to the manufacturer’s recommendations, with no blisters, wrinkles, tears, or blemishes. Do not use reboundable or damage control sheeting f or permanent signs. For reflective legends on flat sheet, double faced mile marker and double faced street name signs, use reverse silk screen transparent ink, transparent acrylic electronic cuttable film, or direct applied reflective sheeting copy. When u sing direct applied reflective sheeting copy, apply all legend on a sign with the same rotation angle orientation. For nonreflective legends, use direct silk screen black ink or direct applied nonreflective acrylic opaque black sheeting copy. For double fa ced mile marker signs, use flat sheet aluminum and apply reflective sheeting and legend to both sides. For double faced street name signs, use extruded aluminum blanks with a minimum thickness of 0.063 inch (1.6 mm) and thicker, stiffened edges, and apply reflective sheeting and legend to both sides. Extrusheet panels consist of flat sheet aluminum reinforced with aluminum extrusions attached by spot welding. Panels extruded in a single operation may be used in lieu of spot welded panels. Do not use extrude d panels and spot welded panels in the same sign. Bolt together the minimum number of full length, sheeted panels to achieve the sign height, using aluminum bolts, washers, lock washers and nuts. For reflective legends, shields and symbols (including hazar dous material 630.04 582 plaque, airport symbol, arrows and borders) use direct applied reflective sheeting. Apply all reflective legend on a sign with the same rotation angle orientation. For nonreflective legends, use direct applied nonreflective acrylic opaque bla ck sheeting copy. For temporary overlay signs, use 0.080 -inch (2.0 mm) thick flat sheet aluminum, with a maximum panel size of 8  4 feet (2.4  1.2 m). Apply sheeting and legend as described above for extrusheet signs. Attach temporary overlays to extrusheet signs in the shop or field using aluminum blind rivets at a maximum spacing of 18 inches (0.5 m) on the peripheries of the temporary overlays and 24 inches (0.6 m) within the interior. Use fluorescent yellow -green r eflective sheeting for the following signs and plaques: School (S1 -1), School Bus Stop Ahead (S3 -1), SCHOOL BUS TURN AHEAD (S3 -2), SCHOOL ENTRANCE (S3 -H3), SCHOOL (S4 -3P), School Speed Limit Ahead (S4 -5, S4 -5a), yellow portions of School Speed Limit (S5 -H1), Pedestrian Crossing (R1 -6, R1 -6b, R1 -9), Bicycle (W11 -1), Pedestrian (W11 -2), Handicapped (W11 -9), Bicycle/Pedestrian (W11 -15), Trail Crossing (W11 -15a), Playground (W15 -1), and SAFETY ZONE (W15 -H2). Fabricate supplemental warning plaques [such as Advis ory Speed (W13 -1P), SHARE THE ROAD (W16 - 1P), Distance (W16 -2P, W16 -2aP, W16 -3P, W16 -3aP), Supplemental Arrow (W16 - 5P, W16 -6P, W16 -7P) and AHEAD (W16 -9P)] from fluorescent yellow -green reflective sheeting when used with a sign above. Use fluorescent yellow reflective sheeting for all yellow signs, yellow portions of multi -colored signs, and yellow sign post reflectors, except for signs and portions of signs required to be fabricated with fluorescent yellow -green reflective sheeting. For lighted signs, cover glare shield and rectangular luminaire support tube with nonreflective acrylic sheeting matching the predominant sign color. Furnish 4  2.5 inch (100  62 mm) sign identification stickers of Type F reflective sheeting as shown in Figure 1. For signs fabri cated in English based sizes, use white stickers with red ink legend. For signs fabricated in hard metric based sizes, regardless of the sign message units contained on the sign face, use yellow stickers with red ink legend. Place the stickers on the back side of the sign in the lower right corner of rectangular signs, or in an equivalent location for other sign shapes, approximately 3 inches (75 mm) from side and bottom sign edges (for smaller signs, these dimensions may be reduced). Position the sticker s o it can be read horizontally and is clearly visible, not near bolt holes or rivets, and not obstructed by the sign support when erected. Silk screen the fabrication data onto the face of the sticker, and include the sheeting manufacturer identification co de and year of fabrication. Alternatively, the numbers 0 -1-2-3-4-5-6-7 and 13 -14-15-16-17 may be silk screened onto the sticker with the correct sheeting manufacturer identification code and fabrication year punched out, respectively. At the time of sign e rection, indicate the erection data by scratching out the appropriate month and year. 630.05 583 FIGURE 1 Sticker design: PROPERTY OF THE STATE OF OHIO UP TO $2500 FINE AND 5 YEARS IMPRISONMENT FOR DAMAGING OR REMOVING THIS SIGN OHIO REV. CODE SEC. 4511.17 MANU ID * FAB. ** EREC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 *ID No. **Year of Manufacture Alternate design: PROPERTY OF THE STATE OF OHIO UP TO $2500 FINE AND 5 YEARS IMPRISONMENT FOR DAMAGING OR REMOVING THIS SIGN OHIO REV. CODE SEC. 4511.17 0 1 2 3 4 5 6 7 13 14 15 16 17 EREC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Fabricate sign post reflectors with flat sheet aluminum and Type G, H or J reflective sheeting. Install red sign post reflectors on each post with the following post-mounted signs: Stop (R1 -1), Yield (R1 -2), Do Not Enter (R5 -1), and Wrong Way (R5 -1a). Install yellow sign post reflectors on each post with the fo llowing post-mounted signs: One-Direction Large Arrow (W1 -6), Two -Direction Large Arrow (W1 -7), Chevron Alignment (W1 -8), and Stop Ahead (W3 -1).

630.05 Foundations. Locate sign support foundations so the plane of the sign

surface is at a right angle to the roadway lanes served (except for signs not intended for this orientation). Install foundations in accordance with 632.14. Furnish and install a ground rod at each rigid overhead and span wire sign support foundation, in accordance with 625.16. Before plac ing foundation concrete for embedded supports, brace the supports in a vertical position. Seven days after concrete placement, remove bracing for embedded supports and erect signs.

630.06 Sign Supports. Sign supports consist of ground mounted, rigid

overhe ad, span wire, and overpass structure mounted types. Fabricate sign supports according to the applicable requirements of AWS D1.1 Structural Welding Code - Steel. The approval of fabricato rs according to 501.03 will not apply. Hot-dip 630.06 584 galvanize steel structural members according to 711.02. Galvanize steel hardware according to 730.08. Tighten threaded fasteners, except anchor bolt nuts, by the “turn of the nut” method according to 513.20. Furnish anchor bolts with a leveling nut, plain washer, and anch or nut conforming to 730.02. Use anchor nuts with a plain washer against the base plate upper surface. Tighten anchor bolt nuts according to 513.20, except that under Table 513.20 -3, use the “nut rotation from snug tight condition” from 1/12 to 1/6 turn instead of 1/3 turn. Apply anaerobic adhesive complying with Federal Standard MIL S 46163, Type II, Grade N to anchor bolts and other threaded connections 1/2 -inch (13 mm) diameter or larger, according to the manufacturer’s recommendations.

630.06 B.

630.07 Sign Erection. Erect signs on ground mounted or overhead supports

according to the schematic signing layout. Mount overhead signs so that the bottom of the signs are in a level position regardless of the sag of supporting messenger wire, mast arm rise, chord member or overpass slope. Do not remove an existing sign until th e replacement sign is either erected or available for immediate erection. Do not erect a replacement sign on a new support more than 24 hours before the removal of the existing sign.

630.08 Sign Shipment and Storage. Package and ship finished flat sheet signs

to assure adequate protection of the sign face, using methods and materials as recommended by the reflective sheeting manufacturer. Ship extrusheet signs up to 8 feet (2.4 m) high completely assembled. Extrusheet signs over 8 feet (2.4 m) high may be shipped in two pieces for field assembly. Keep extrusheet signs rigid by back bracing or crating. Store signs, whether provided by the Contractor or furnished by the Department, off the ground in a vertical position with adequate covering or shelter to prevent packing material from getting wet. Immediately remove packing material that does become wet from contact with sign faces to prevent damage to the reflective sheeting. Identify extr usheet signs on a detachable form on the sign back giving the project number and year, sign reference number, sign legend sketch, and station location. 630.09 587 Identify the underlying sign for signs shipped with an attached temporary overlay sign.

630.09 Specific Service and Tourist -Oriented Directional Signs. Maintain

existing Specific Service (logo) signs and Tourist -Oriented Directional Signs (TODS) in accordance with 614.07 unless indicated in the plans.

630.10 Covering of Signs. Install temporary covers, and s ubsequently remove

and dispose of them as shown on the plans or as directed by the Engineer. For the covering material, use a sturdy opaque material and obtain the Engineer’s approval of the proposed method of covering and attachment.

630.12 Removal and De livery, Storage, Reerection, or Disposal of Signs and

Supports. Carefully dismantle signs and sign supports indicated for removal. Either deliver to the Department facility as designated by the plan , store on the project, re - erect, or dispose of removed s igns and sign supports. To ensure maintenance of adequate traffic control at all times, remove signs only with the Engineer’s approval. Remove sign supports in a manner to avoid damage. Remove sign service to the support by disconnecting and removing cable s at the service pull -box. Ensure that connection of remaining cables conforms to 625.18. Remove support foundations to at least 1 foot (0.3 m) below subgrade or finished groundline. Backfill and restore surfaces to a condition equal to that existing befor e the work started and dispose of surplus material according to 105.16, 105.17 and 611.15 at no cost to the Department. Furnish mounting hardware for signs to be re -erected. Field drill as necessary. Furnish anchor bolts and conduit ells for installation i n the foundation for overhead sign supports to be re -erected. Remove temporary overlay signs so as not to damage the underlying sign.

630.13 Inspection. After erection, the Engineer will inspect signs under both

day and night conditions. Correct deficienci es in lateral position or visibility to the Engineer’s satisfaction.

630.14 Method of Measurement. The Department will measure Ground

Mounted Post Support by the number of feet (meters) measured from the bottom of the support to the top of the support, and will include driving, hardware for anchor base installation, and furnishing and placing of patching materials for excavations in paved areas. The Department will not measure the overlap length of post for the anchor base installation. The Department will measure Foundations for ground mounted pipe supports, ground mounted structural beam supports, rigid overhead sign supports and span wire sign supports by the number of each for one pipe, structural beam, pole, end frame or strain pole, and will include ex cavation, dewatering, sleeving, casing, reinforcing steel, concrete, backfilling raceways, and when required the 10 foot (3m) foundation section of concrete barrier, and the disposal of surplus excavation. Sealing of the 10 foot foundation section of concr ete barrier shall be paid for under Item 512 when specified in the plans. The Department will measure Ground Mounted Structural Beam Support by the number of feet (meters) measured from the bottom of the foundation to the top of 630.14 588 the sign, and will include furnishing and placing of patching materials for excavations in paved areas. The Department will measure Ground Mounted Pipe Support by the number of feet (meters) measured from the bottom of the foundation to the top of the sign and will include u -bracket , tubing, posts and hardware for sign attachment, bolt -down anchor and furnishing and placing of patching materials for excavations in paved areas. The Department will measure Ground Mounted Wooden Box Beam Support by the number of feet (meters), and will include excavation, backfilling, disposal of surplus material, and installation of breakaway feature. The Department will measure One Way Support and Street Name Sign Support by the number of feet (meters) measured from the bottom of the support to the top of the support, and will include driving, hardware for anchor base installation, and furnishing and placing of patching materials for excavations in paved areas. The Department will not measure the overlap length of post for the anchor base installation. The Department will measure Temporary Sign Support by the number of feet (meters) or the number of each furnished, erected, maintained, and removed. The Department will measure Breakaway Structural Beam Connection by the number of each set of connection pa rts with necessary welding and drilling of holes as required for the breakaway function in one beam, and will include base plates, fuse plate, hinge plate, bolt retainer plate, and bolts assembled to specified torques. The Department will measure Triangula r Slip Base Connection by the number of each set of connection parts with the necessary welding and drilling of holes as required for the breakaway function in one pipe and will include slip plate, slip base casting, locking collar, bolt retainer plate, co iled pin and bolts assembled to specified torques. The Department will measure Overhead Sign Support by the number of each, and will include anchor bolts and conduit ells furnished for the foundation, sign attachment assemblies, sign hanger assemblies and identification stickers when specified. The Department will measure Combination Overhead Sign Support with light pole extension by the number of each, and will include anchor bolts and conduit ells furnished for the foundation, sign attachment assemblies, sign hanger assemblies and identification stickers when specified. Bracket arms and roadway lighting luminaires are not included. The Department will measure Sign Attachment Assembly by the number of separately itemized assemblies, and will include one ove rhead sign bracket, U -bolts, clamps, and miscellaneous hardware. The Department will measure Luminaire Support Assembly by the number of separately itemized assemblies, and will include one support arm, other necessary structural members, and miscellaneous hardware. 630.14 589 The Department will measure Span Wire Sign Support by the number of each support, and will include two strain poles with span wire clamps and anchor shackles, anchor bolts and conduit ells furnished for foundations, messenger wire, clamps, thimb les, and sign hanger assemblies with hangers, braces, lengths of post, and miscellaneous hardware. The Department will measure Overpass Structure Mounted Sign Support by the number of each support, and will include attachment work and hardware, to attach one individual sign. The Department will measure Sign Hanger Assembly by the number of each, and will include all parts necessary to attach one individual sign. For pole mounted sign supports, the Department will measure Sign Support Assembly by the number of each, and will include brackets, hardware, and posts sufficient to attach each sign or set of signs to an individual pole. For bridge mounted sign supports, the Department will measure Sign Support Assembly by the number of each, and will include post, hardware, and attachment work. The Department will measure Sign by the number of square feet (square meters) of signs, and will include the furnishing of identification stickers, sign backing assemblies, mounting bolts, washers, nuts, bearing plates, clips , and rivets. For square, rectangular, circular, or irregular shaped signs, the Department will determine measurement by multiplying the largest dimensions of width and height. For triangular shaped signs, the Department will determine measurement by multi plying the largest dimension of width and one -half the largest dimension of height. The Department will include the area of the glare shields for lighted signs as an integral part of the sign. The Department will measure Sign Post Reflector by the number o f each, and will include the furnishing of mounting bolts, washers and nuts. The Department will measure Sign, Double -Faced by the number of each, and will include mounting fittings and hardware. The Department will measure Sign Erected by the number of sq uare feet (square meters) of signs erected, and will include mounting hardware, the assembly of signs that are in more than one piece and the installation of required sign backing assemblies. The Department will exclude the furnishing of signs. For square, rectangular, circular, or irregular shaped signs, the Department will determine measurement by multiplying the largest dimensions of width and height. For triangular shaped signs, the Department will determine measurement by multiplying the largest dimens ion of width and one -half the largest dimension of height. The Department will include the area of the glare shields for lighted signs as an integral part of the sign. The Department will measure Sign Backing Assembly by the number of separately itemized a ssemblies, and will include back bracing for each group of flat sheet signs attached to a post or posts, or a single assembly for backing posts used to attach an exit or supplemental panel to a guide sign. 630.15 590 The Department will measure Covering of Sign by th e number of square feet (square meters) of sign face covered, and will include the subsequent removal and disposal of the covering. The Department will measure Removal and Delivery, Storage, Reerection, or Disposal of Sign by the number of each sign remove d and delivered, stored, re - erected or disposed of. Major signs are defined for measurement as being 40 square feet (3.7 m²) or larger. The Department will measure Removal and Delivery, Storage, Reerection, or Disposal of Support by the number of each supp ort removed and delivered, stored, re-erected or disposed of, and will include removal of foundations and restoration of surfaces. With reerection, the Department will include furnishing of anchor bolts, conduit ells, necessary field drilling, and hardware .

630.15 Basis of Payment. The Department will not pay for relocating posts

from their planned location without prior approval by the engineer. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description 630 Each Ground Mounted Structural Beam Support Foundation 630 Each Ground Mounted Pipe Support Foundation 630 Each Rigid Overhead Sign Support Foundation 630 Each Span Wire Sign Support Foundation 630 Foot (Meter) Ground Mounted Support, ___ Post 630 Foot ( Meter) Ground Mounted Structural Beam Support, ___ Beam 630 Foot (Meter) Ground Mounted Support, Pipe 630 Foot (Meter) Ground Mounted Wooden Box Beam Support,_____Beam 630 Foot (Meter) One-Way Support, ___ Post 630 Foot (Meter) Street Name Sign S upport, ___ Post 630 Foot (Meter) Temporary Sign Support, ___ Post or Each 630 Each Breakaway Structural Beam Connection 630 Each Triangular Slip Base Connection 630 Each Overhead Sign Support, Type TC -___, Design___ 630 Each Combination Overhead Sign Support, Type TC -___, Design___ 630 Each Sign Attachment Assembly 630 Each Luminaire Support Assembly 630 Each Span Wire Sign Support, Type TC -17.10, Design ___ 630 Each Overpass Structure Mounted Sign Support, Type TC -___, Design___ 630 Each Sign Hanger Assembly, (Span Wire, Mast Arm) 630 Each Sign Support Assembly, (Pole or Bridge Mounted) 631.01 591 630 Square Foot Sign, (Flat Sheet, Ground (Square Meter) Mounted Extrusheet, Overhead Extrusheet, Temporary Overlay) 630 Each Sign, Double -Faced, (Street Name, Mile Marker) 630 Square Foot Sign Erected, (Flat Sheet, (Square Meter) Extrusheet, Temporary Overlay) 630 Each Sign Backing Assembly 630 Each Sign Post Reflector 630 Square Foot Covering of Sign (Square Meter) 630 Each Removal of Ground Mounted (Major) Sign and (Delivery, Storage, Reerection, or Disposal) 630 Each Removal of Ground Mounted (Structural Beam, Post, Pipe, Wooden Box Beam) Support and (Delivery, Storage or Disposal) 630 Each Removal of Overhe ad Mounted Sign and (Delivery, Storage, Reerection, or Disposal) 630 Each Removal of Overhead Sign Support and (Delivery, Storage, Reerection, or Disposal), Type TC -___ 630 Each Removal of Overlay Sign ITEM 631 SIGN LIGHTI NG AND ELECTRICAL S IGNS

631.01 Description

631.02 General

631.03 Materials and Equipment

631.04 Sign Service

631.05 Signs Wired

631.06 Disconnect Switch

631.07 Luminaire

631.08 Controls

631.09 Electrical Signs

631.10 Removal

631.11 Inspection and Testing

631.12 Method of Measurement

631.13 Basis of Payment

631.01 Description. This work consists of furnishing and installing sign lighting

or electrical sign equipment, complete, tested, and ready for service.

631.02 General. Perform installations according to the National El ectrical

Safety Code, the National Electrical Code and local codes for the area of installation. Furnish overhead sign lighting and integrate electric power with roadway lighting circuits. Furnish shop drawings according to 625.06. 631.03 592 Conform to the requirements of Supplement 1063 for the installation or testing of electrical items installed under 631.08 and 631.09. Protect wire and cable by installing entirely within support structure interiors, enclosures, junction boxes, and rigid or flexible condu it. Ensure that the methods, materials, and locations of splicing and the methods of connecting and identifying wire and cable conform to 625, 725, and the plans. Furnish grounding systems according to 625.16. Power service is furnished under 625.

631.03 Materials and Equipment. Furnish materials and equipment that are

new, of first quality, of current design, and free from defects. Use electrical parts, wire, switches, and other elements of the installations that are of ample capacity to ca rry the required current without excessive heating or drop of potential. Ensure that each item of equipment bears a nameplate, indelible marking, or brand that identifies the type, model, catalog number, and manufacturer. Furnish materials conforming to th e following: Ground rod ................................ ............................. 625.16 Sealing, conduit ................................ ...................... 625.12 Cable and wire, 600 -volt ................................ ........ 725.02 Conduit, rigid ................................ ......................... 725.04 Ballast ................................ ................................ .... 725.11 Power service ................................ ......................... 725.19 Disconnect Switch ................................ ................. 725.19 Switch Enclosure ................................ .................... 725.19 Changeable message sign, electric type ................. 731.03 Internally illuminated fixed message sign .............. 731.05 Sign flasher assembly ................................ ............. 731.06 School speed limit sign assembly ........................... 731.07 Conduit, flexible ................................ ..................... 731.08 Timer with enclosure ................................ .............. 731.10

631.04 Sign Service. Sign service consists of all cable and other equipment to

provide a comple te electrical service from either an underground or overhead source to the disconnect switch. Route sign service cable from a pull box to the switch enclosure for overhead supported signs by means of underground conduit, foundation conduit ell, and the interior of the structural member supporting the enclosure. Route sign service for overpass structure mounted signs through underground and structure attached conduit terminating at a switch enclosure. Attach the conduit by 0.02-inch (0.5 mm) thick by 3/4 -inch (19 mm) wide passivated stainless steel straps spaced at intervals of not more than 5 feet (1.5 m). Route sign service cable from a distribution system direct drop to the switch enclosure by means of a conduit riser with weatherhead. Form a drip loop in to the cable. Use either a cast aluminum or galvanized ferrous metal weatherhead of a threaded design. Attach the conduit by straps as described in the previous paragraph. 631.05 593 For sign service, use single conductor stranded copper. When the connection is to hi ghway lighting distribution and circuit cable, use the same cable for sign service. In other applications, use sign service cable rated at 600 volts minimum and not smaller than 4 AWG.

631.05 Signs Wired. Ensure that signs wired complete the electrical sys tem

from the disconnect switch to the luminaires. Furnish continuous wiring from the disconnect switch to a junction box mounted on the sign support or overpass structure. Install junction box in a manner that allows sign removal as a unit by the disconnec tion of the wires and the removal of sign attachment hardware. Install a junction box for each sign. Furnish continuous wiring from the junction box to the first luminaire and between additional luminaires. Use wire rated at 600 volts, single conductor and not smaller than 10 AWG. Route wire on overhead sign supports from the disconnect switch enclosure through structural member interiors. Support wire hanging within the interior of steel vertical members by looping over the J -hook provided. After wiring in the disconnect switch enclosure, seal the nipple in the enclosure back with self -fusing high-dielectric insulating compound. Assemble flexible or rigid conduit on the sign structure or lighting support arms with condulets, and attach them to the structure by clamps located within 6 inches (150 mm) of each conduit end and separated by not more than 24 inches (0.6 m).

631.06 Disconnect Switch. Install lighted signs with a disconnect switch within

a lockable, weatherproof enclosure. For the switch, use a two -pole (minimum), single -throw, fused safety disconnect type, rated at 600 volts, 30 amperes with the fuse size as specified. Furnish a solid neutral bar. For the enclosure, use stainless steel NEMA 250, Type 4. Furnish space for a chase nipple in the enclos ure back. Field drill a hole through the enclosure and install the nipple. Ensure that enclosures also have a screened 1/4 -inch (6 mm) diameter weep hole located in the bottom surface. Furnish each enclosure with at least one padlock. Use padlocks with a bronze or brass lock body and a corrosion protected steel shackle. Key all padlocks for a project alike, and obtain the appropriate master key number from the maintaining agency. When specified, furnish and install bracket assemblies on existing overhead s ign supports or on concrete structures. Use bracket assemblies made of steel, galvanized according to 711.02, or aluminum.

631.07 Luminaire. Include a lamp of the wattage specified.

Locate ballasts integral with the luminaire. Furnish weatherproof ballast housings made from corrosion resistant materials.

631.08 Controls. When specified, furnish photoelectric controls when sign

lighting is fed by uncontrolled circuits. 631.09 594 When specified, furnish and install the timer with enclosure to provide automatic school s peed limit sign operation.

631.09 Electrical Signs. Furnish changeable message signs that conform to the

Contract Documents. The pay item will specify if the display capabilities are limited message or unlimited message. The Contractor may use line units o f these types as inserts in a panel sign, singly or grouped to provide a multiline sign. Hardware and software shall be complete to operate and maintain the sign. Furnish internally illuminated signs consisting of the single or double face type. The sign s upport is furnished under another pay item. Furnish suspended signs that hang plumb, are properly oriented, and locked in place. Furnish sign flasher assemblies consisting of a pair of flashing beacons. The sign, support, and foundation are furnished under other pay items. Furnish school speed limit sign assemblies that conform to the Contract Documents. School speed limit sign assemblies consist of a reflectorized SCHOOL SPEED LIMIT 20 DURING RESTRICTED HOURS (S5 -H1) sign fitted with a pair of flashing be acons arranged above and below.

631.10 Removal. Carefully remove sign lighting equipment (such as luminaires,

disconnect switches, or ballasts) and electrical signs. Removed items become the property of the Contractor.

631.11 Inspection and Testing. Ensure that the sign lighting systems and

electrical signs meet all requirements of the ground, cable insulation, and performance tests specified in 625.19. Correct lamps, ballasts, and transformers that failed during the performance test by replacing the faulty component; the entire test period will not require restarting. During the performance test, make final adjustments to sign lateral position and aiming angles of luminaires to eliminate excessive brightness and glare, and to obtain optimum sign face reflec ted brightness, uniformity of illumination, visibility, and legibility, to the satisfaction of the Engineer.

631.12 Method of Measurement. All of the following methods of measurement

include all hardware necessary to securely mount the associated item incl uding angles, plates, tubes and channels. The Department will measure Sign Service by the number of complete units for each support, and will include conduit, conduit riser, weatherhead, fittings, cables, trenching, and backfilling. The Department will mea sure Sign Wired and Sign Wired, Overpass Structure by the number of complete units of wiring for each individual sign, and will include junction boxes, rigid or flexible conduit, condulets, clamps, wires, and connectors. The Department will measure Disconn ect Switch with Enclosure by the number of each, and will include field drilling and padlocks. The Department will measure Switch Enclosure Mounting Bracket Assembly by the number of each, and will include two brackets and field drilling. The Department wi ll measure Ballast and Photoelectric Control by the number of each separate item. 631.13 595 The Department will measure Luminaire by the number of each, and will include lamps and luminaire attachment hardware. The Department will measure Changeable Message Sign by the number of each, and will include cabinet, external enclosures, conduit, electrical, electronic and auxiliary components, and remote control units to provide a fully functional unit. The Department will measure Internally Illuminated Fixed Message Sign by the number of each, and will include lamps and ballasts. The Department will measure Sign Flasher Assembly by the number of each, and will include beacons, flasher control unit with enclosure, and lamps. The Department will measure School Speed Limit Si gn Assembly by the number of each, and will include sign, beacons, flasher control unit with enclosure, and lamps. The Department will measure Timer with Enclosure by the number of each, and will include field drilling and padlocks. The Department will mea sure Removal of sign lighting equipment or electrical signs by the number of each like items removed.

631.13 Basis of Payment. The Department will pay for grounding systems

under Item 625. The Department will pay for accepted quantities at the contract pri ces as follows: Item Unit Description 631 Each Sign Service 631 Each Sign Wired 631 Each Sign Wired, Overpass Structure 631 Each Disconnect Switch with Enclosure, Type ___ 631 Each Switch Enclosure Mounting Bracket Assembly 631 Each Ballast, Type ___ 631 Each Photoelectric Control 631 Each Luminaire, Type ___, with ___ -watt Lamp 631 Each Changeable Message Sign, (Limited, Unlimited) Message 631 Each Internally Illuminated Fixed Message Sign, Type ___ 631 Each Sign Flasher Assembly 631 Each Scho ol Speed Limit Sign Assembly, ___ inches  ___ inches (___ mm  ___ mm) 631 Each Timer with Enclosure 631 Each Removal of (Luminaire, Disconnect Switch, Ballast, etc.)