895 Overhead Sign Structure .............................................. 910.19 Packaged Patc hing Products ........................................ 901.08 Reinforci ng Bars .......................................................... 910.01 Sign Post s .................................................................... 910.14 30 Traffic Signs ................................................................ 919.01 Materials used for temporary construction signs, temporary traffic signs, and temporary panel signs shall meet the requirements herein. The basis for use of the materials will be by visual inspection with no additional testing, evaluation, or documentation. CONSTRUCTION REQUIREMENTS
802.03 Location of Signs and Sign Structures 40
Sign and sign structure locations shall be staked, and the Engineer will either approve the locations or give written noti ce of necessary changes. The provisions of
109.03 will not apply to posts ordered prior to approval of staked locations. Two days notice shall be provided for inspection and approval of staked locations.
All signs shall be adjusted to eliminate specular reflection.
802.04 Working Drawings
Working drawings shall be submitted in accordance with 105.02 for all strain 50 poles and structural frames, except breaka way posts. Roadway cross-sections and bridge dimensions shall be checked, as applicable, in the field prior to preparation of working drawings. If the no-load camber is not shown on the plans, the Contractor shall furnish this information on the working drawings. 802.05 Excavation and Backfill The finished pavement or shoulder section shall not be damaged during excavation. The Engineer shall be notified in writing of class X material in accordance with 60
206.02 encountered within the limits of the traffic sign supports foundation excavation. The Engineer will determine the design for the installation of the foundations. Excavation of class X materi al shall be in accordance with 206.
The excavation for sign posts shall be made as nearly as possible to neat lines. Sign post encasement shall not be formed ex cept in sandy soil, or as directed.
802.06 Placing Concrete
Placing concrete shall be in accordan ce with 702, except that foundations incorporated into sections of concrete barr ier wall shall receive a finish in accordance 70 with 702.21. Exposed concrete shall have a smooth surface and beveled edges. 802.06 896 Anchor bolt alignment shall be maintain ed during concrete placement. Temporary positioning place and associated nuts shall be removed upon completion of the foundation. The threads shall be protected during concrete placement. Any damage to galvanized coating shall be repaired prior to assembly. Conduit and grounding shall be in accordance with 807. 802.07 Installing Supports 80
a.Posts Posts shall be vertical after installation. All damaged posts shall be removed and replaced with an acceptable post. Square sign post foundations shall be reinforced anchor base or unreinforced anchor base as shown on the plans. If sign post Type A or sign post Type B is specified, square sign posts may be used. Splicing of square steel sign posts will not be allowed. In locations where class X excavation is encountered if the total length of the 90 anchor bolts cannot be used, they shall be cut off. A steel plate measuring 6 by 6 by 1/2 in. shall be welded to the bottom of the bolts. The plate shall have a hole cut which allows the bolt to pass through it and the plate and bolt shall be completely welded together around the circumference of the bolt on both sides of the plate. No butt welding is allowed. The length of the bolts shall allow the plate to be covered by 3 to 4 in. of concrete at the bottom of the foundation. Base plate bolts for panel sign post installations shall be tightened in accordance with 711.65(d). Bolts at the fuse or hinge plate joint shall be ti ghtened in accordance with 711.65(d) or by the direct tension indicator, DTI, method. 100
b.Overhead Sign Structures When erection of the structure has been started, it shall be completed the same day. The structure shall be loaded, to prevent vibration, by attaching signs or lighting supports the same day. An oxidation inhibitor in accordance with 802.07(b)4 shall be applied to all surfaces that mate with a dissimilar material. Fasteners for chord splice connections shall be high strength heavy hex bolts 110 conforming to ASTM F3125, grade A325 with matching lock nuts having steel inserts. Installation shall be in accordance with 711.65. Other bolts and hardware shall conform to the requirements of 910.19. Fasteners shall be tightened by turn-of-nut tightening, calibrated wrench tightening, or direct tension indicator tightening. The calibrated wrench shall be calibrated by an acceptable tension measur ing device such as a Skidmore-Wilhelm. 802.07 897 Anchor bolt hardware tightening shall be by the turn of the nut method and as follows: 120
1.Anchor bolts shall be clean and not be damaged or out of plumb. 2. The threaded portion of the anchor bolts shall be lubricated within 24 h prior to tightening.
3.The distance from the bottom of the levelling nuts to the top of the foundation shall be less than the diameter of the bolt, unless specified otherwise.
4.The tightening procedure shall be as follows:
a.All tightening shall be in the star pattern order as shown on the plans, or in accordance wi th the FHWA “Guidelines for the Installation, Inspection, Maintenance and Repair of Structural Supports for Highway Signs, Luminaires, and Traffic Signals”.
b.All leveling nuts shall be brought into contact with the base plate. While holding the levelling nut with a wrench, the 140 top nut shall be brought to a snug tight condition in full contact with the base plate. The levelling nut shall be brought to a snug tight condition. This process shall be repeated for the remaining top and levelling nuts.
c.After all top and levelling nuts are made snug tight, the top nuts and base plate shall then be marked, and the nuts further tightened, pretensioned, by a minimum 1/6 turn for bolt diameters that are 1 3/4 in. or greater or a minimum 1/3 turn for bolts less than 1 3/4 in. in diameter. 150
d.For span structures, the top nuts shall be inspected for proper fit no sooner than 10 minutes after the installation of the truss or span on the end bents or columns. Nuts found not to be in a snug tight condition or nuts that have loosened, based on a visual inspection of the relative position marks, shall be tightened by repeating the steps above. Damage that is detrimental to the structural integrity of the frame or aesthetic 160 appearance shall be repaired. No field welding will be allowed. 802.07 898 The grounding connection shall be located 12 in. from the bottom of the support and shall be easily accessible from the structure manhole. Traffic shall be maintained in accordance with 801.16 during installation. 1 . T r u s s e s 170 When placed on blocks to produce the required camber, the truss sections shall fit together at the flange connections with a minimum gap of 1/16 in. on any flange assembly. The total of the gaps in any one connection shall not exceed 1/8 in. Gaps shall be shimmed with tapered shims before tightening the flange bolts. Vertical truss members and vertical diagonals shall be machined to provide a snug tube-to-tube fit to the chord along the entire edge before welding. Horizontal truss members and horizontal diagonals shall be slotted for the dimensions shown on the plans and welded to the gusset plates. They shall be sealed against water penetration. Chord flanges shall be machined from solid rounds. Mating surfaces shall be flat within 1/64 in. Flanges shall be given an add itional finish if necessary to ensure contact between plates. The cap bolts used to attach the top cap s of end-support columns shall be located so as to miss the J hook. The camber shown on the plans is for fabrication only. It shall be measured with the truss fully supported. The allowable camber tolerance is 25% of the specified camber value. 190 All signs and walkway brackets shall be placed as close to the brace points as possible. The Contractor shall verify that th e dimensions are suitable for the type of fixture to be supplied.
2.Monotube The required camber shall be achieved in accordance with the manufacturer’s recommendations as detailed on the working drawings. 3. Cantilever Arms 200 Cantilever arms shall fit together at the flange connections between sections with a minimum gap of 1/16 in. on any flange assembly. The total of the gaps in any one connection shall not exceed 1/8 in. Double arm chords are octagonal tubular shape with 0.14 in./ft taper. Quadri-chord arms are circular shape with constant diameter.
4.Bridge Brackets The location of the sign bracket may be shifted to avoid joints or stiffeners on the bridge. Before placing aluminum in contact with concrete, both the concrete and aluminum surfaces shall be coated w ith an aluminum-imp regnated caulking compound. Where aluminum surfaces are to be placed in contact with steel, the steel 210 802.07 899 surface shall be given one coat of zinc chro mate paint and the aluminum surfaces shall be coated with an aluminum-impregnated caulking compound before placement. After the bolts have been tightened, the excess caulking compound shall be removed. All openings around the flanges shall be fully painted and shall be flush with the caulking compound. 802.08 Installing Signs If new signs are to be installed on existing overhead sign structures, the existing mounting hardware, if applicable, may be reused. Bolts, nuts, and washers shall not be reused. Additional new hardware may be required to complete the mounting. All such 220 sign hangers protruding above the new signs shall be cut off flush to the top of the signs. Splicing or overlapping of sign hangers will not be allowed. All unused sign hangers and hardware shall be removed. A minimum of two sign support bracket assemblies will be required for all signs having a width greater than 30 in. Signs 7 ft or less in height shall have sign support bracket assemblies mounted at a maximum spacing of 7 ft. Signs greater than 7 ft in height shall have sign support bracket assemblies mounted at a maximum spacing of 5 ft. Sign overhang beyond the end bracket asse mbly shall be not more than half the spacing of the bracket assemblies. 230
a.Sheet Signs Sheet signs shall be fastened to the post as shown on the plans. Rivets shall be used to fasten sheet signs mounted to panel or other sheet signs. Steel and plastic washers shall be placed as shown on the plans. Lock-nuts shall be tightened sufficiently so that the sign is held firmly against the post. If the sign sheeting is twisted or damaged, the sign shall be replaced. Lock-nuts for cable span mounted signs shall be tightened so that the sign is held firmly against the cable. There shall be no deformation or twisting of aluminum 240 sheeting, or damage to the reflective sheeting.
b.Panel Signs Panel signs shall be mounted as follows: 1. Up to and including 24 ft of sign width, clips shall be placed on both sides of each post at the top and bottom of the sign. Intermediate clips shall be placed one on each panel on each post and shall alternate left and right on each post.
2.Over 24 ft of sign width, double clips shall be used, one on the right side and one on the left side on each post per panel width, plus the sets necessary to attach the top and bottom of the sign.
3.Lock-nuts shall be torqued two full turns beyond snug fit. 802.08 900 Panels shall be bolted together on 24 in. centers with an allowable gap of no more than 1/16 in. between units. Panels shall be temporarily braced in accordance with the panel manufacturer’s recommendations.
802.09 Removal, Resetting, or Reloca tion of Signs or Support Assemblies
Signs to be relocated shall be installed in accordance with the MUTCD and on new posts. Signs to be reset shall be installed in accordance with the MUTCD and on existing posts. Signs or support assemblies to be removed shall be removed within five work days after the required replacement signs or support assemblies are installed. Concrete foundations shall be removed to a minimum depth of 1 ft below the ground surface. After concrete foundations have been removed, the area shall be backfilled and seeded or sodded in accordance with 621, or treated wi th a material which matches that in the 270 surrounding area.
802.10 Roadway and Bridge Reference Signs If existing roadway and bridge reference signs interfere with the prosecution of
other work, such signs and posts shall be removed, stored, and then reinstalled within 25 ft of their original longitudinal location or as directed.
802.11 Method of Measurement
Sheet signs and panel signs will be measured by the square foot. Sheet signs will be measured as the smallest dimensions of a square or rectangle large enough to make 280 the sign. However, triangular or trapezoidal signs will be measured as the smallest triangle or trapezoid required to make the sign. If the pay unit for sheet signs is shown in the Schedule of Pay Items as each, the number of sheet signs specified, including posts, hardware, and erection, will be measured by the number of units installed. Sign posts will be measured by the linear foot. Square sign posts will be measured from the top of the post to the termination of the post in the anchor base. 290 Traffic sign support foundations will be measured by the number of units of each type installed. No reduction will be made in a unit if class X material is encountered during foundation excavation. If class X material is encountered dur ing foundation excavation, the quantity to be measured will be that authorized and removed and in accordance with 206.10. Structural steel, breakaway, will be measured by the pound. Such measurement will include the weight of breakaway sections such as stiffeners, base plates, and fuse plates. 300 Reference posts, including post, sign, and hardware, will be measured by the number of units installed. 802.09 Backfill of traffic sign support foundations will be measured in accordance with
211.09 Overhead sign structures will be measured by the number of units of each type
installed. Overhead sign structures to be removed will be measured by the number of structures removed. Existing ground mounted signs reset will be measured by the number of signs removed and reinstalled, complete in place. 802.12 Basis of Payment The accepted quantities of sheet signs and panel signs will be paid for at the contract unit price per square foot, of the type and thickness specified, with legend, complete in place. 320 Sign post will be paid for at the contract unit price per linear foot for the type specified. Structural steel, breakaway, will be paid for at the contract unit price per pound. Ground mounted sign support foundations will be paid for at the contract unit price per each type specified. Reference posts will be paid for at th e contract unit price per each, complete in 330 place. Payment for class X material encountered during a foundation excavation will be made in accordance with 206.11. Payment for backfill of support foundations will be made in accordance with 211.10. The removal of signs, overhead structures, and sign assemblies, will be paid for at the contract unit price per each. 340 Existing ground mounted signs reset will be paid for at the contract unit price per each. Payment will be made under: Pay Item Pay Unit Symbol Box Truss Sign Structure Foundation, _____ ............................ EACH type 350 802.12 902 Cable Span Sign Structur e Foundation, _____ .......................... EACH type Cantilever Sign Support Foundation, _____ ............................. EACH type Overhead Butterfly Cantilever Sign Structure Foundation, _____ ...................................... EACH type Overhead Sign Structure, _____, Remove ................................ EACH type Overhead Sign Structure, Box Truss, _____ ............................. EACH 360 type Overhead Sign Structure, Br idge Bracket Assembly ................. EACH Overhead Sign Structure, Butterfly Cantilever .......................... EACH Overhead Sign Structure, Cantilever, _____ ............................. EACH type Overhead Sign Structure, Monotube ......................................... EACH Overhead Sign Structure, Tri-Chord, _____ .............................. EACH type Reference Post ........................................................................... EACH Sign and Supports, Wide Flange, Remove ................................ EACH 370 Sign Post, _____ ........................................................................ LFT type Sign Post, Square, _____, Reinforced Anchor Base .................. LFT type Sign Post, Square, _____, Unreinforced Anchor Base .............. LFT type Sign, Double Faced, Sheet, With Legend, _____ ...................... SFT thickness Sign, Ground Mounted, Reset ................................................... EACH Sign, Overhead, Remove ........................................................... EACH 380 Sign, Panel, Relocate ................................................................. EACH Sign, Panel, Remove.................................................................. EACH Sign, Panel, With Legend .......................................................... SFT Sign, Sheet Assembly, Relocate ................................................ EACH Sign, Sheet, and Supports, Remove ........................................... EACH Sign, Sheet, Relocate ................................................................. EACH Sign, Sheet, Remove.................................................................. EACH Sign, Sheet, With Legend .......................................................... EACH Sign, Sheet, With Legend, _____ .............................................. SFT thickness 390 Structural Steel, Breakaway ...................................................... LBS Tri-Chord Sign Structur e Foundation, ______ .......................... EACH type Wide Flange Sign Post Support Foundation, _____ .................. EACH type 802.12 903 The cost of staking sign and sign structure locations, including materials and labor, shall be included in the cost of the pay items in this section. The cost of removal of signs, sign assemblies, sign lighting circuitry, supports, 400 concrete foundations, backfill material, s odding, seeding, and n ecessary incidentals shall be included in the cost of overhead sign structure, remove. The cost of walkway assembly, where appl icable, shall be included in the cost of overhead sign structure. The cost of roadway and bridge reference signs and posts to be removed, stored, and reinstalled shall be included in the cost of other pay items, unless otherwise specified. Roadway and bridge reference si gns which are damaged by the Contractor shall be replaced with no additional payment. 410 The cost of the reinforced anchor base or unreinforced anchor base, angle bolts, and rivets shall be included in the cost of sign post, square. No additional payment will be made if square sign posts are used in lieu of Type A or Type B posts. The cost of all hardware to attach the sign to its structural supports, the reflective sheeting on both faces, and all legend shall be included in the cost of double-faced sheet signs. 420 The cost of all hardware necessary to asse mble and attach the sign to its structural supports, all legend, and adjustments necessary to eliminate specular reflection shall be included in the cost of sheet sign or panel sign. The cost of all necessary hardware in cluding sign hangers, clips, and U bolts required for the mounting of signs to existing or new overhead sign structures shall be included in the cost of the sign. The cost of modifying existing hardware to mount a new sign shall be included in 430 the cost of the new sign. The cost of identification markings for signs shall be included in the cost of the sign. The cost of existing ground mounted sign removal, existing post removal, and storage shall be included in the cost of sign resetting. Existing signs or posts that are damaged by the Contractor shall be replaced with no additional payment. The cost of sign removal, existing post removal, and all mounting hardware 440 necessary to attach th e existing sign to new posts, sha ll be included in the cost of the sign relocation. 802.12 The cost of concrete, reinforcement, stub, anchor bolts, conduit, and all necessary hardware shall be included in the cost of the support foundation. The cost of furnishing and applying aluminum-impregnated caulking compound and zinc chromate paint as required in 802.07, shall be included in the cost of the pay items in this section. 450 The replacement of posts damaged by th e Contractor’s activities shall be without additional payment. The cost of cutting the reinforcing bars and anchor bolts, furnishing the steel plate and welding the plate to the ends of the anchor bolts when cl ass X excavation is encountered shall be included in the cost of the pay items in this section. The cost of excavation, except for class X material, and necessary incidentals shall be included in the cost of the pay items in this section. 460
Source: Indiana Standard Specifications, 2024 Edition. Pages 913–922 of 1,248.