713.01 748 SECTION 713 – HIGHWAY SIGNING
713.01 Description ................................ ................................ ................... 748
713.02 Materials ................................ ................................ ...................... 748
713.03 Reserved ................................ ................................ ....................... 749
713.04 Construction Methods and Requirements ................................ .... 749
713.05 Final Cleanup ................................ ................................ ............... 753
713.06 Method of Measurement ................................ .............................. 754
713.07 Basis of Payment ................................ ................................ .......... 755
DESCRIPTION
713.01 Description
This work consists of constructing foundations and supports, fabricating, furnishing, assembling, and erecting traffic signs on the supports, including delineators when specified, for a section of highway, its interchanges, frontage roads, and roads or streets affording immediate access to the highway. Construct and erect highway signs and devices in accordance with these Specifications and the MUTCD , latest edition. The Plans will show the extent and general ar rangement of the signs. Refer to the Plans for general guidance. If departures from the Plans and Specifications are deemed necessary by the Contractor, submit the reasons for and details of such departures to the Engineer for approval. Do not make any departure without the Engineer’s prior written approval. For departures from the Plans, submit for the Engineer’s approval eight copies of drawings showing the complete design of the proposed departure and all other information necessary to complete the s ign assembly. MATERIALS
713.02 Materials
Provide materials as specified in: Portland Cement Concrete, Class A ................................ ............ 604 713.03 749 Highway Signing Material ................................ .......................... 916
713.03 Reserved
CONSTRUC TION REQUIREMENTS
713.04 Construction Methods and Requirements
Before beginning any excavation or driving any sign posts, determine the location of all underground electrical, drainage, and utility lines in the vicinity, and perform work so as to avoid d amaging these facilities. All signs are numbered or otherwise identified . Locate signs as shown on the Plans. Obtain the Engineer’s approval for all changes in locations before erection. Locate delineators as shown on the Plans and in accordance with the MUTCD. Place the top of all sign footings level with the ground line. Remove the existing footings of signs to be eliminated to 6 inches below ground line. The Engineer, or Contractor when required, will stake the location of all sign supports and delin eators and mark the location of each sign with the number of the sign. After the sign locations have been staked, but before ordering any material for the supports, allow for a field inspection and approval by the Engineer. Construct the signs at the app roved locations. Ensure steel meets all specifications in 602.04.
A.Flexible Delineator Posts Drive the flexible delineator posts or anchors into the ground with equipment that does not damage the posts, anchors, or the reflective sheeting. Drill or form pilot holes where necessary to obtain the embedment shown on the Plans.
B.Post Supports for Ground Mounted Signs Furnish and erect post supports consisting of one or more posts of the type shown on the Plans. 713.04 750 Drive all posts into the ground, or bolt to a stub in the concrete foundation. Plumb, align, and orient posts as shown on the Plans. To drive posts, use a m ethod that will not damage or deface the top of the post. For sign posts that are to be bolted to or stubbed in a concrete foundation, excavate as nearly to neat lines as possible and generally pour all parts of the sign post foundation against the soil or rock face. Use forming below ground level in sandy soils or when directed by the Engineer. Forming will be required for all concrete work above the finished ground level and the top 12 inches of all concrete work. Provide necessary braces to keep ancho r bolts and stubs in proper position. For foundations, use Class A concrete, meeting the requirements of 604.03. Perform f orming and concrete work as specified in 604. Remove and dispose of all s urplus excavated material. Repair all cracked, chipped, or scratched galvanized steel members by “touching -up” with an approved zinc powder, wire, stick, or spray manufactured especially for this purpose. The zinc powder, wire, or stick shall become compl etely liquid at a temperature no greater than 475 F. Thoroughly clean the area to be regalvanized, including removing slag on welds, and repair according to the recommendations of the manufacturer of the material being used.
C.Foundations for Sign Supports Furnish all materials and labor, and perform all necessary construction to complete the foundations upon which the sign supports will be erected.
1.Excavation and Backfill. Excavate and backfill as specified in 204.
2.Disposing of Surplus or Unsuitable Material. Dispose of surplus or unsuitable material as specified in 203.07.
3.Forms. Construct forms as specified in 604.05.
4.Steel Reinforcement. Provide steel reinforcement as specified in 604.08.
5.Electrical Conduit . Install electrical conduit, when specified, in the foundations as shown on the Plans. 713.04 751 6. Concrete. Use either (1) Class A concrete meeting 604.03 or (2) Class X concrete with a f’c as identified in the plans or required by the design. If Class X concrete is required, use a mix meeting the minimum requirements of 604.03 for Class A concrete, but with a cementitious material quantity necessary to produce the specified strength.
7.Placing Concrete. Place concrete as specified in 604.16.
8.Setting Anchor Bolts and Stubs. Set anchor bolts and stubs for sign supports to proper locations and elevations with templates, and carefully check them after constructing the sign foundation and before the concrete has set. Anchor rods shall conform to the requirements of 730.11.
9.Surface Finish. Perform finishing as specified in 604.21.
10.Curing. Cure concrete as specified in 604.23.
D.Column Supports for Cantilever Structures Fabricate and erect supports and horizontal arms constructed of galvanized steel. The supports shall consist of one or more vertical poles, one or more horizontal arms, and all necessary fastenings for assembling the units and anchoring the supports to a foundation. Use leveling nuts to plumb supports. Erect cantilever supports so that the arms are horizontal. Assemble a ll high strength bolt connections as specified in 602.17. Perform a ll welding as specified in 602.19. The Engineer will reject s upports on which galvanizing has been damaged in transportation, handling, and erection . With the Engineer’s approval, the Contractor may replace such damaged supports in the field as specified in 713.04.B . The repaired area shall be similar in appearance and in coating thickness to the original coating. The Engineer will reject supports that are no t coated satisfactorily. 713.04 752 E. Supports for Overhead Sign Structures Fabricate and erect truss sign supports constructed of aluminum or galvanized steel. Erect the structures with the specified camber and so as to prevent excessive stresses, damage, or defacement. Provide b rackets for mounting signs (including future signs) of the type to be supported by the structure. They shall be adjustable to allow mounting of the sign faces at any angle between a truly vertical position and 3 degrees from vertical. Obtain this angle by tilting the top of the sign toward traffic . All brackets shall be of a length equal to the heights of the signs being supported. Before erecting aluminum end supports, protect the bottom of each base plate with an approved material that will adequately prevent any harmful reaction between the plate and the concrete. Use leveling nuts to plumb t he end supports. Do not fill the space between the base plate and the foundation with grout. Tighten all nuts on aluminum trusses, except those used on the flanges, only until they are snug . This includes the nuts on the anchor bolts. Use a thread lubricant with each aluminum nut. Tighten all nuts on galvanized steel trusses, with the exception of high strength bolt connections, only to a snug condition. Assemble all high strength bolt co nnections as specified in 602.17. Repair galvanizing on steel trusses as specified in 713.04.B. Field welding will not be permitted.
F.Signs Furnish, fabricate, and erect signs on their supp orts. When alternates are allowed, all legends, borders, and accessories for an entire project shall conform to the requirements of one and only one of the alternates. 713.05 753 Mechanically apply the reflective sheeting to the properly prepared aluminum with the equipment and in the manner prescribed by the sheeting manufacturer. All completed signs shall be free from defects in materials and workmanship and shall effectively present the specified message under conditions of both day and night viewing. Reflectori zed sign surfaces shall exhibit uniform color and brightness over the entire background surface and shall not appear mottled, streaked, or stained when viewed either in ordinary daylight or in the incident beam of an automobile headlamp. The reflectorized legend optical performance shall uniformly reflect incident light from motor vehicle headlamps back to the eyes of the operator at entrance angles up to 30 degrees without gaps or irregularities. Position signs on, and fasten them to, the support as shown on the Plans or as directed by the Engineer. All signs, once erected, shall be clean and free of substances that would hide or otherwise obscure any portion of the sign face. Attach flat sheet signs to the posts with tamper resistant fasteners. After the sheeting is thoroughly attached to the sign face, attach demountable letters, digits, borders, shields, and alphabet accessories flush against sign faces, with corrosive resistant fasteners as recommended by the manufacturer. Use a sufficient number of f asteners to securely fasten demountable legends and borders to sign panels. Provide demountable borders of the width shown on the Plans. Place demountable borders as shown on the Plans. Spacing of all legends shall meet the FHWA Standard Alphabets for Hi ghway Signs. Any improper size or spacing of legends and borders shall be cause for rejection of the entire sign.
713.05 Final Cleanup
Before final inspection, clean exposed sign and support surfaces, and level and repair the site as directed by the Eng ineer to ensure the effectiveness and neat appearance of the work. Perform final cleanup as specified in 104.10. 713.06 754 COMPENSATION
713.06 Method of Measurement
The Department will measure:
1.Class A Concrete and Steel Bar Reinfor cement for embedment of sign supports, and for foundations for sign supports and overhead sign structures , in accordance with 604.30.
2.Mile Marker and Steel Posts by the unit, per each, complete in place.
3.Flexible delineator posts with reflective sheeting, anchors, and all material necessary for erection of this item payment by the unit, per each, in place.
4.Aluminum or Steel Hollow Square Posts for sign supports, Aluminum or Steel I -Beams and WF -Beams for sign su pports, Structural Steel Hollow Square Posts (Break -Away) for sign supports, and Structural Steel I -Beams and WF -Beams (Break Away) for sign supports by the pound based on the nominal weight per foot listed on the sign schedule, for the various sizes and w eights used, complete in place.
5.Aluminum or Steel Overhead Sign Structures and Steel Cantilever Sign Structures by the unit, per each, complete in place, including the footings and all incidentals necessary to construct these items.
6.“U” Section Steel Posts by the pound, based on the nominal weight per foot listed on the sign schedule, for the various sizes and weights used, complete in place.
7.Flat Sheet Signs by the square foot for each thickness, complete in place.
8.Extruded Aluminum Panel Signs for payment by the square foot complete in place, except that the measurement will be made only for the actual dimensions of the extruded panels. No payment will be allowed for any space between panels. The Department will consider conduit, excavation, a nd backfilling to be incidental to the associated items. 713.07 755 713.07 Basis of Payment The Department will pay for accepted quantities, complete in place, at the contract prices as follows: Item Pay Unit Class A Concrete (Foundation for Sign Supports) Cubic Ya rd Steel Bar Reinforcement (Foundation for Sign Supports) Pound Mile Marker & Steel Post Each Flexible Delineator (Description) Each (Description) Sign Supports Pound Steel Overhead Sign Structure (Span ___ ) Each Steel Cantilever Sign Structure (Sign No.) Each “U” Section Steel Posts Pound Flat Sheet Aluminum Sign ( ___ ” thick) Square Feet Extruded Aluminum Panel Sign Square Feet Such payment is full compensation for furnishing all materials, equipment, tools, labor, and incidentals necessary to complete t he work. 714.01 756 SECTION 714 – ROADWAY AND STRUCTURE LIGHTING
714.01 Description ................................ ................................ ................... 756
714.02 Materials ................................ ................................ ...................... 757
714.03 Codes ................................ ................................ ............................ 758
714.04 Reserved ................................ ................................ ....................... 759
714.05 Conduit ................................ ................................ ......................... 759
714.06 Pull Boxes ................................ ................................ .................... 762
714.07 Underground Cable for Lighting Circuits ................................ .... 763
714.08 Light Standards ................................ ................................ ............ 765
714.09 Bracket Arms ................................ ................................ ............... 767
714.10 Luminaires ................................ ................................ ................... 767
714.11 Lamps ................................ ................................ ........................... 770
714.12 Installation of Overhead Wires ................................ .................... 770
714.13 Cable Markers ................................ ................................ .............. 770
714.14 Co ntrol Center ................................ ................................ .............. 770
714.15 Field Painting ................................ ................................ ............... 771
714.16 Testing After Installation ................................ ............................. 771
714.17 Repair of Seeded and Sodded Areas ................................ ............ 773
714.18 Disposal of Excess or Unsuitable Material ................................ .. 773
714.19 Final Cleanup ................................ ................................ ............... 773
714.20 Method of Measurement ................................ .............................. 773
714.21 Basis of Payment ................................ ................................ .......... 776
DESCRIPTION
714.01 Description
This work consists of furnishing and installing roadway and structure lighting systems complete or to th e extent shown on the Plans.
Source: Tennessee Standard Specifications for Road and Bridge Construction, 2021 Edition. Pages 757–764 of 1,072.