636.1 General Description
This work includes fabricating and installing highway signs according to the details on the plans and the Manual on Uniform Traffic Control Devices (MUTCD).
636.1.01 Definitions
General Provisions 101 through 150.
636.1.02 Related References
A. Standard Specifications Section 500—Concrete Structures Section 830—PortlandCement Section 855—Steel Pile Section 870—Paint Section 910—Sign Fabrication Section 911—Sign Posts Section 912—Sign Blanks and Panels Section 913—Reflectorizing Materials Section 914—Sign Paint Section 915—Mast Arm Assemblies Section 916—Delineators Section 917—Reflective and Nonreflective Characters B. Referenced Documents Manual on Uniform Traffic Control Devices
636.1.03 Submittals
Before fabricating overhead panel type signs, submit to the Engineer the Shop Drawings to approve the sign bracing and method of attaching to sign supports. Before driving piles, furnish a list of proposed pile lengths to the Engineer.
636.2 Materials
Ensure that materials meet the requirements of the following specifications: Material Section Sign Fabrication and Accessories 910 Steel Sign Posts and Bolts (Drive Type) 911.2.01 Galvanized Steel Structural Shape Posts 911.2.02 Delineator Posts Galvanized Steel 911.2.04.A.4 Aluminum “U” Flange 911.2.04.A.5 Wood 911.2.04.A.6 Flexible 911.2.04.A.7 Aluminum Sign Blanks 912.2.01 Extruded Aluminum Sign Panels 912.2.02 Reflective Sheeting 913.2.01 Silk Screen Lettering Paint 914.2.01 Steel Posts and Arms for Mast Arm Assembly 915.2.01 Guy Wires for Mast Arm Assembly 915.2.02 Center Mount Reflector 916.2.01 Demountable Characters with Reflective Sheeting 917.2.01 Fittings, bolts, nuts, washers, clips, molding, etc., for panel signs shall conform to the requirements shown on the Plans. Class A Concrete Footings for Signs 500 Piling 855.2.03 Portland Cement 830.2.01 Sign Paint, Enamel 870.2.03
636.2.01 Delivery, Storage, and Handling
General Provisions 101 through 150.
636.3 Construction Requirements
636.3.01 Personnel
General Provisions 101 through 150.
636.3.02 Equipment
General Provisions 101 through 150.
636.3.03 Preparation
General Provisions 101 through 150.
636.3.04 Fabrication
General Provisions 101 through 150.
636.3.05 Construction
A. Finished Signs Ensure that the finished signs are clear cut and that the lines of letters and details are true, regular, and free of waviness, unevenness, furry edges or lines, scaling, cracking, blistering, pitting, dents, or blemishes. Only one type of demountable characters (letters, numerals, symbols, and borders) is permitted on special roadside signs on each project. B. Erecting the Signs 1. Drive Type Posts Drive type posts may be driven in place or placed in prepared holes. a. Use driven posts only in firm and stable soil. If the soil is sandy or unstable, place each drive type post in a prepared dry hole of at least a 4 in. (100 mm) diameter. b. When placing posts in prepared holes: 1) Backfill the holes with a mixture of damp, clean friable soil and 8 percent by volume Portland cement. 2) Thoroughly tamp the mixture in place around the posts. c. Erect posts vertically as deep and at an angle to the roadway as shown on the Plans or as directed. d. Do not penetrate posts in the coastal plain region less than 4 ft. (1.2 m) or 3 ft. (1 m) for posts in the Piedmont and the Valley and Ridge Regions when no guard rail is present. When erecting signs behind a guard rail, penetrate at least 3 ft. (1 m) for posts 14 ft. (4.2 m) or less long, or 4 ft. (1.2 m) for posts over 14 ft. (4.2 m) long. 2. Single-Plate Signs Erect single-plate signs 9 ft.² (0.84 m²) or less on one drive-type post unless otherwise specified on the plans. Erect single-plate signs greater than 9 ft.² (0.84 m²) on two drive-type posts. Leave enough distance between the two posts to fit the mounting holes in the sign plate. 3. Steel Posts for Mast Arm Assemblies a. Erect steel posts for mast arm assemblies in a concrete foundation according to the plans. Erect at the place, height, and angle to the roadway specified. b. After curing the concrete foundation for at least 24 hours, securely fasten the specified signs into place on the mast arm. 4. Ground-Mounted Panel-Type Signs a. Erect the supporting members of ground-mounted panel-type signs where shown on the plans or as directed by the Engineer at the specified angle to the roadway. b. Securely fasten the panels into place. 5. Milepost Signs Erect milepost signs including posts as specified on the plans. 6. Delineator Posts Use delineator posts made of galvanized steel, aluminum, or an alloy that conforms to the requirements of Subsection 911.2.04.A.4 or 911.2.04.A.5. a. Erect the posts where shown on the plans. b. Mount reflectors for galvanized steel or aluminum posts on the flange side of the post. c. When signs are attached to supports, torque the bolts to at least 20 ft.-lbs. (27 N•m). 7. Overhead Panel-Type Signs Erect overhead panel type signs on sign supports where shown on the Plans or as directed by the Engineer. a. Ensure that the bottom of the sign is 18 in. (450 mm) above the top of the lighting fixture. b. Ensure that the sign has ample bracing for mounting the sign support so that each sign can withstand 1 in. (25 mm) of ice accumulated on the entire sign and wind pressures shown on the plans. c. Ensure that the top of each sign is three degrees off perpendicular from the bottom of the sign. Use the three-degree slant to lean the sign toward the approaching traffic. C. Foundations (for Special Roadside Signs) Do not disturb the natural ground adjacent to a foundation more than necessary to construct the footing. 1. Excavate for the footings to the lines and elevations shown on the Plans or established by the Engineer. Do not disturb or loosen the foundation below these elevations. 2. Use forms of the necessary shape and dimensions to construct the footings to the lines and elevations shown on the plans. 3. Cure the concrete foundations, constructed in conformance with Section 500 and the plan details, at least 7 days before erecting the sign. 4. Ensure that the minimum lengths of steel H piling used in the foundations of ground-mounting signs are accepted and meet the plan penetration requirements. The Plan quantity of steel H piling is shown for estimating purposes only; determine and provide the necessary lengths of piles. 5. Before driving the piles, furnish a list of proposed pile lengths to the Engineer. a. Use full-length piles or built-up piles with a maximum of two splices that are made in the presence of the Engineer. b. Furnish satisfactory identification for all piles or portions thereof. 6. When rock prevents the penetration required on the plans, construct according to the notes and details shown on the plans. 7. The minimum energy ratings required by Section 520 for pile hammers will be waived for constructing ground- mounted sign supports. Jetting is not permitted. 8. Place required backfilling in layers no greater than 6 in. (150 mm) thick and thoroughly compact it to the approximate density of the undisturbed soil in the area. D. Sign Panels Use extruded, panel-type aluminum. Ensure that the sign type used meets the requirements of Subsection 912.2.02. E. Legends and Borders Place legends and borders according to Subsection 917.2.01, Demountable Characters, with Type XI reflective sheeting.
636.3.06 Quality Acceptance
General Provisions 101 through 150.
636.3.07 Contractor Warranty and Maintenance
General Provisions 101 through 150.
636.4 Measurement
A. Type-1 or Type-2 Highway Signs Type 1 or Type 2 highway signs with reflective sheeting of Type IX or XI as specified on the plans to be paid for are measured for payment by the actual number of square feet (meters) and fraction thereof of sign type and sheeting specified. The measurement includes providing the message and furnishing and placing signs complete and accepted. The plan quantity will be the pay quantity. B. Extruded Aluminum Panels Extruded aluminum panels to be paid for are the number of square feet (meters) or portion of square feet (meters) furnished, including legend components, border material, fittings, nuts, washers, clamps, molding, etc., furnished, erected, completed, and accepted. C. Galv anized Steel Posts Galvanized steel posts, types 7, 8, or 9 to be paid for are the actual number of linear feet (meters) and fraction thereof of the type specified, furnished, erected, completed, and accepted. Galvanized steel to be paid for is the number of pounds (kilograms) furnished, erected, and accepted. Weights are computed from theoretical weights listed in the plans for each post size. Base plates, connections, anchors, stub post, etc., are not measured for payment but are considered incidental to the Item. D. Delineators Delineators (reflectorized guide markers) to be paid for are the number of the type specified, including posts, rivets, and spacers, that are furnished, placed, and completed and accepted. E. Mast Arm Assemblies Mast arm assemblies to be paid for are the actual number furnished and erected, including concrete footing, sign, and post, completed and accepted. F. Special Roadside Signs Class A concrete for special roadside signs to be paid for are measured by the cubic yard (meter), neat measurement according to Section 500.5 Payment. No deductions are made for the volume of concrete displaced by steel piling, anchor bolts, or posts. G. Portland Cement Portland cement stabilized material used for backfilling holes is not measured for payment. H. Steel H—Piling Steel H—piling is measured for payment by the linear foot (meter) of accepted piling in place (signs), remaining in the completed work.
636.4.01 Limits
General Provisions 101 through 150.
636.5 Payment
Highway signs, galvanized steel posts, I-beam posts, delineators, mast arm assemblies, Class A concrete, and piling for signs are paid for at the Contract Unit Price for the various items. Payment is full compensation for furnishing and erecting the Item complete in place according to this specification. Separate payment will not be made for piling splices, the cost of cutting, or the cutoff portions. Pile cutoffs remain the Contractor’s property. Piles eliminated due to authorized revisions will be paid for according to Subsection 109.06, Eliminated Items. These piles become Departmental property. Except for the above provision, no payment will be made for piles delivered to the project that are not used in the work. Payment will be made under: Item No. 636 Highway signs, type 1 material, reflective sheeting type___, Per square foot (meter) Item No. 636 Highway signs, type 2 material, reflective sheeting type___, Per square foot (meter) Item No. 636 Galvanized steel posts, type ___ Per linear foot (meter) Item No. 636 Galvanized steel structural shape posts Per pound (kilogram) Item No. 636 Highway signs, aluminum extruded panels, reflective sheeting type ___ Per square foot (meter) Item No. 636 Plastic Flexible Delineator, type___ Per each Item No. 636 Delineator, Type___ Per each Item No. 636 Piling in place, signs, steel H, HP 12x53 (HP 310x79) Per linear foot (meter)
636.5.01 Adjustments
General Provisions 101 through 150.
Highway Signs in other states
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