810Permanent Traffic Signs and Supports

8-40Section 810. Permanent Traffic Signs and Supports

810.01. Description

This work consists of providing, fabricating, and erecting traffic signs and supports in accordance with the Michigan Manual on Uniform Traffic Control Devices (MMUTCD), Michigan Standard Highway Signs Manual , and MDOT ’s Sign Support Standard Plans .

Defect . Physical imperfections affecting function, performance, or durability of a sign or support . Defects include dents, scratches, nicks, blemishes, mottles, dark spots, scuffs, streaks, warpage, sheeting lift, and bolt head dimples. Patch . Small piece of reflective sheeting material used to cover a defect or imperfection on a sign surface. Post Spacing . Center -to-center distance between pos ts. Substrate . Material to which sheeting is applied (wood or aluminum). Warp . Deformation caused by bending or twisting in posts or substrate. Wedge . Tapered hardwood used to secure wood posts in sleeves.

810.02. Materials

Provide materials in accordance with the following sections : Provide Grade 3500 concrete for cantilever and truss sign support foundations . Provide Grade 3000 concrete for other sign support foundations.

810.03. Construction

Before beginning excavation or post -driving operations, determine the location of underground utilities as specified in section 107. MDOT Standard Specifications for Construction Section 810

8-41Place signs at the bottom height shown on the plans or in accordance with

MDOT ’s Sign Support Standar d Plans . Repair zinc coating on sign supports damaged during transportation, handling, or erection in accordance with subsection 716.03.E and at no additional cost to the Department.

Support Standard Plans and as provided on the plans and as required in sections 707 and 716.

with MDOT ’s Sign Support Standard Plans. Blast clean and galvanize structure components in accordance with section 716. Field verify the correctness of breakaway heights .

Sign Support Standard Plans . Blast clean and galvanize steel structure components in accordance with section 716. Field verify the correctness of bridge sign connection strut lengths for fabrication. The Engineer must approve the strut lengths prior to commencing fabrication.

Signs Manual or as required by traffic sign graphic design layout plans .

accordance with subsection 810.03.U . Dispose of materials in accordance with subs ection 204.03.B.

ground in accordance with the MDOT Standard Plan R -127 series . Do not bend the post or damag e the top.

with the required anchori ng accessories in acco rdance with the post manufacturer's directions. Do not bend or da mage the posts. Install the flexible post pl umb with its reflective shee ting per pendi cular or radial to onco ming traffic . Replace posts or sheeting damaged during installation at no additional cost t o the Departm ent.

R-127 series. Reflectors and mounting hardware must be in accordance with subsection 919.03. MDOT Standard Specifications for Construction Section 810 8-42 4. Reflective Panels. Provide and install reflective panels to sign supports with a minimum width of 2 inches with the length measured from the bottom of the sign as follows: 3 feet – Signs with 4 feet bottom height and c ombination signs on same supports. 6 feet – All other signs and applications. Install the reflective material per the manufacturer’s installation instructions . Install the reflective panel to the sign support using stainless steel fasteners.

Drive or embed posts so sign faces and supports are within 3/16 inch of plumb over 3 feet. Place posts within 2 % of the plan distance, as measured from center -to-center of posts. Do not damage the top of posts during driving. Install steel sign supports and square tubular steel sign supports in accordance with MDOT’s Sign Support Standard Plans .

sign faces and supports are within 3/16 inch of plumb over 3 feet. Place the posts within 3 % of the plan distance, as measured from center -to-center of posts. For wood post sign supports that do not require pre- drilled holes, place the end with the most severe strength defects on the top. The Engineer will not require forms for concrete, provided the Contractor prevents earth from falling into the limits of the excavation. The Contractor may use tubular shells in soils where boreholes will not stay open.

including square tubular steel sign supports or steel delineator posts through existing concrete, drill or saw cut a separate hole through the concrete for each post . Drill or cut post holes no greater than 1 inch larger than the largest cross -sectional dimension of the post . After drilling or sawing, remove the concrete debris from the hole. Clean and dry the area around the hole. Insert the galvanized steel post into the hole and embed to a depth of 3½ feet below the top of concrete grade. Fill the hole around the post with a silicone sealer. If installing posts in new concrete, the Contractor may form holes before placing the new concrete. MDOT Standard Specifications for Construction Section 810

8-43F. Installing Wood Posts Through Concrete . If installing wood sign posts

through existing concrete, drill or saw cut a separate hole through the concrete for each post . Drill or cut postholes to a diameter of at least 18 inches . After drilling or sawing, remove the concrete debris from the hole. Clean and dry the area around the hole. Center the galvanized steel sleeve and wood post in the hole. If installing wood posts in new concrete, the Contractor may form holes before placing the new concrete.

marker cluster bracket to the supports in accordance with MDOT’s Sign Support Standard Plans SIGN 740 series or as directed by the Engineer.

Provide and instal l sign supports on concrete glare screen or concrete median barrier in accordance with MDOT ’s Sign Support Standard Plans . Place supports so the sign face and post are within 3/16 inch of plumb over 3 feet.

holes for supports . The Engineer will not require concrete forms, provided the Contractor prevents earth from falling into the limits of excavation. The Contractor may use tubular shells in soils where boreholes will not stay open. Place the concrete in accordance with subsection 706.03.H . Hold the stub column in position with a template for at least 24 hours after placing the concrete. Construct the f oundation with the top elevation as shown on MDOT’s Sign Support Standard Plans or as required.

traffic before or during construction of cantilever sign support and truss sign support foundations, provide temporary traffic control devices in accordance with section 812. Maintain the temporary traffic control devices at each foundation until com pletion of the foundation, backfill , and, if required, guardrail installation. Construct the foundation to the top elevation shown on MDOT’s Sign Support Standard Plans or as required.

Contractor may omit forms for footings or foundation portions more than 6 inches below the finished earth grade, if the earth outside the neat lines of the foundation shown on the plans does not i ntrude into the excavation. MDOT Standard Specifications for Construction Section 810 8-44 3. Hand Chipping . Remove unsound or loose concrete with air hammers or other Engineer -approved metho ds. Salvage existing steel reinforcement in the wall or barrier . Saw cut the area designated for removal to at least ½ inch deepal ong a line determined by the Engineer. Remove the concrete around truss anchor bolts to an area at least 3 inches beyond the perimeter of the anchor pattern and 3 inches below the embedded depth of the anchor bolts , as shown on MDOT’s Sign Support Standard Plans SIGN 610 series . Remove the concrete from exposed reinforcing steel to provide a clearance of at least ¾ inch behind the steel . Remove loose material and blast clean the exposed surfaces and existing steel reinforcements . Blow out the area with oil-free compressed air.

accordance with subsection 712.03.I.

accordance with subsection 706.03.E.

and place concrete in accordance with subsection 810.03.N.1.

weather . In cold weather, protect the concrete in accordance with subsection 706.03.N.

and compaction method before placing backfill . Backfill in accordance with subsection 206.03.B . Place and compact backfill around the foundation in layers no greater than 9 inches thick

piles for cantilever and truss foundations in accordance with section 718.

without damaging the members . Do not lift cantilever box sections by chains or internal truss members . Use nylon slings that wrap the entire cross section and provide at least a two-point pickup for handling the truss sections . Erect cantilever sign supports in accordance with the following sequence:

tension nuts in accordance with subsection 810.03.N.2. MDOT Standard Specifications for Construction Section 810 8-45 2.. For Type E cantilevers, p lace the arms without the sign on the erected column. Tighten bolts in accordance with the turn-of -the-nut method specified in subsection 707.03. E.6.d. Discard nuts and bolts loosened or removed after full t ensioning. The Engineer will not require replacement of tightened bolts that are loosened by tightening adjacent bolts.

connection angles in the relaxed position and tighten bolts to a snug tight condition in accordance with subsection 707.03. E.6.c . The lock washers must be fully compressed after snug tightening has been completed. Place the truss box without the sign on the erected column. Align truss box connection flanges with the upright column connection flanges and t ension bolts in accordance with the turn-of -the-nut method specified in subsection 707.03. E.6.d .

aluminum mounting supports that receive the sign panel mounting U-bolts to ensure that the final position of the sign panel is level.

stencil the structure number, as shown on the plans, on the vertical support member at least 4 feet, but no more than 6 feet, above the sign structure base plate. Use black urethane spray paint and 2- inch gothic -style font numbers and letters for stenciling. Place the stencil on the side of the structure facing the roadway . Place all stenciling on the vertical support members on the right side of the roadway unless a cantilever is installed on the left side of the roadway per the signing plans . Notify the Engineer in writing upon completion of stencil placement.

damaging the members . Do not lift truss box sections by chains or internal truss members . Use nylon slings that wrap the entire cross section and provide at least a two-point pickup for handling the truss, truss sections, and end supports . Erect truss sign supports in accordance with the following sequence.

accordance with subsection 810.03.N.2.

contact in the relaxed position and tension bolts in accordance with the turn-of -the-nut method specified in subsection 707.03. E.6.c . Discard nuts and bolts loosened or removed after full tensioning. The Engineer will not require replacement of tightened bolts that are loosened by tightening adjacent bolts . Place the truss box, without the MDOT Standard Specifications for Construction Section 810 8-46 sign, on the erected columns . Align the truss box on the upright columns and connect with U -bolts.

connection angles in the relaxed position and tighten bolts to a snug tight condition in accordance with subsection 707.03. E.6.c . The lock washers must be fully compressed after snug tightening has been completed. Place the truss box, without the sign, on the erected columns . Align truss box connection flanges with the upright column connection flanges and tension bolts in accordance with the turn-of -the-nut method specified in subsection 707.03. E.6.d .

aluminum mounting supports that receive the sign panel mounting U-bolts to ensure that the final position of the sign panel is level.

the structure number, as shown on the plans, on the vertical support member at least 4 feet, but no more than 6 feet, above the sign structure base plate. Use black urethane spray paint and 2- inch gothic -style font numbers and letters for stenciling. Place the stencil on the side of the structure facing the roadway . Place all stenciling on the vertical support members on the right side of the roadway . Notify the Engineer in writing upon completion of stencil placement. Load the truss to prevent vi bration during erection. If the roadway is open to traffic, load the truss by installing the permanent signs or blank sign panels . If the roadway is closed to traffic, the Contractor may load the truss with sandbags . Fasten temporary loads and leave in place until installation of permanent signs.

aligned using a steel template. Secure the template before placing the concrete and leave in place at least 24 hours after concrete placement . Place concrete in accordance with 706.03.H and finish smooth and horizontal . Do not erect the sign support until the concrete attains 70 % of the minimum 28-day compressive strength or until test beams or cylinders attain a flexural strength of 500 psi. The Engineer will reject a foundation if the anchor bolts are out of position or greater than 1:40 out -of-plumb. Do not bend anchor bolts to straighten, move into position, or alter the structure base plate.

reference the required rotation. MDOT Standard Specifications for Construction Section 810

8-47Place the bottom leveling nuts and washers onto the anchor bolts and

thread down as close to the concrete foundation as possible. Level the leveling nuts , keeping them as close to the concrete foundation as possible. The distance from the top of the concrete foundation to the bottom of the leveling nuts must not exceed 1 inch. Place the upright column on to the anchor bolts and bring all leveling nuts into full bearing with the bottom of the structure base plate. Apply beeswax, or an Engineer -approved equivalent, to the bearing face and threads of the top nuts . Place the top nuts and washers onto the anchor bolts and tighten loosely with a wrench or by hand. Ensure that the top nuts and leveling nuts fully bear on the structure base plate. Tight en anchor nuts to a snug condition as defined below . Apply beeswax, or an equivalent, to the top nut bearing face and threads before placing on the anchor . Tighten top nuts to a snug condition, defined as follows:

person using a wrench with a length 14 times the diameter of the anchor bolt but at least 18 inches . Apply the full effort as close to the end of the wrench as possible. Pull firmly by leaning back and using entire body weight on the end of the wrench until the nut stops rotating. Use at least two separate tightening passes . Tighten the top nuts first and sequence the tightening of each pass so the opposite side nut will be tightened until all the top nuts in that pass are snug. After all top nuts are tightened, repeat the procedure to tighten the bottom nuts . If present, lock washers must be fully compressed once t ightening is complete. Check the snug tightness of the top nuts in the presence of Department personnel e nsuring that snugged nuts meet the torque requirements in Table 810-1 . Once a snug tight condition is verified, use a hydraulic wrench or a calibrated torque wrench to rotate the top nuts an additional one-third turn. Ensure that the hydraulic wrench or calibrated torque wrench has a current traceable accredited calibration. The calibration interval is 1 year unless otherwise approved by the Engineer. Calibration of the torque wrench must be performed by an accredited laboratory . Accurately mark the structure base plate, nuts, and anchor bolts to reference one-sixth and one-third required rotations. Tighten the nuts in two separate passes, turning the nuts one-sixth of a turn with each pass . Use a tightening MDOT Standard Specifications for Construction Section 810 8-48 sequence to ensure that the nut opposite the tightened nut is subsequently Table 810- 1: Anchor bolt Snug Condition Required Torque Anchor Bolt Diameter

Minimum Maximum 1 100 200 1¼ 200 400 1½ 300 600 1¾ 400 600 2 500 700 2¼ 700 900 2½ 800 1,000 1¼ 200 400

tightened. Do not allow the leveling nuts to rotate during top nut tightening. Once the tightening is complete, mark the upright column with the wrench operator’s initials and the date of tightening. Hydraulic wrench or calibrated torque wrench must have a calibration chart showing conversions between psi and lbf -ft throughout the entire range.

presence of Department personnel a minimum of 48 hours after the additional one-third turn. Using a hydraulic wrench or calibrated torque wrench, a pply torque to the nuts in accordance with Table 810-2 and verify no movement of the nut occurs . Mark the upright column with the wrench operator’s initials and the date of the 48-hour check. Table 810- 2: Anchor Bolt Final Turn Required Torque Anchor Bolt Diameter (inch) Minimum Torque (lbf-ft) 1 300 1¼ 630 1½ 1,120 1¾ 1,820 2 2,770 2¼ 4,010 2½ 5,550 MDOT Standard Specifications for Construction Section 810

8-49If the nuts rotate during the 48 -hour check, proper anchor bolt tension

was not achieved. The ultrasonic testing and calibration procedures that are used by the Department for final acceptance are available upon request. Tighten the nuts or washers, determined loose by the Department during acceptance procedures, in accordance with this subsection. The Engineer will determine if removal, disassembly, or re -erection of the structure is necessary . If the Department determines that nuts require tightening, after initial installation, remove and reinstall nuts and washers and, if the Engineer determines necessary, remove, disassemble, and re-erect the enti re structure at no additional cost to the Department.

The Department will ultrasonically test the anchor bolts for acceptance after the 48-hour check is deemed acceptable. The ultrasonic testing and calibration procedures that are used by the Department f or final structure acceptance are available upon request.

connections in accordance with MDOT’s Sign Support Standard Plans .

Replace bolts connecting the bracket, sign, diaphragm , and hanger to the sign connection. Do not replace bolts in concrete bridge beams or concrete deck fascia. Provide connection hardware in accordance with subsection 906.0 7. Remove and replace bolts, nuts, flat washers , and lock washers that connect the bolted bridge sign connection bracket to the bridge structure fascia beam, one at a tim e. Replace the bolts in accordance with subsection 707.03. E.6 and tighten using the turn-of -nut tightening method in subsection 707.03. E.6.d .

assignment structures in accordance with MDOT’s Sign Support Standard Plans SIGN 760 series . After placement of foundations, steel poles, and steel cables, erect the overhead lane assignment signs in accordance with the following:

bottom;

washers on the top side of each sign; and

MDOT Standard Specifications for Construction Section 810

8-50R. Signs . Provide complete signs, free of defects . Provide reflectorized sign

faces, smooth and free of dents, wrinkles, and other defects . Provide signs with uniform color and brightness, free of warps or other deformations, and without mottling, streaks, or stains . Replace signs that do not meet the size, font, or legend layout requirements . Replace signs with unacceptable wrinkles, as determined by the Engineer. The Engineer will allow no more than three patches per sign. Use patches made of the same mat erial as the sign. Extend patches 9/16 inch beyond the outer edges of the defect . The Engineer will determine the maximum patch size. Do not patch more than 2% of the total number of signs per project . For projects with 100 or fewer signs, the Engineer wil l determine the maximum number of patched signs. The Engineer will provide installation date stickers to the Contractor at the preconstruction meeting. At the time of installation, place an installation date sticker on the back lower portion of the signs . Ensure that the date sticker is fully visible after installation. Store signs, delivered for use on the project, in accordance with the sheeting manufacturer’s recommendations . Replace or repair signs that were damaged, discolored, or defaced during fabric ation, transportation, storage, or erection. Position and fasten signs to the support . Tighten nuts to the bolts, including nylon washers, in contact with reflective sheeting in accordance with the reflective sheeting manufacturer’s recommendations . Erect signs clean and free of substances that would hide or obscure portions of the sign face. Along roadways open to traffic, cover signs with messages not immediately applicable. Cover signs in accordance with subsection

812.03.D.2

If replacing existing signs on project sections open to traffic, remove existing signs after erecting new signs visible to motorists . Remove replaced signs and supports from the right -of-way within 7 days. Remove signs and supports in accordance with subsection 810.03. U. Leave existing overhead signs in place until the installation of new signs . Retain existing signs, not shown on the plans, unless otherwise directed by the Engineer. Do not install signs behind obstructions . Prune vegetation obstructing signs. MDOT Standard Specifications for Construction Section 810

8-51Remove packaging and protective materials from sign panels and clean

the exposed sign faces in accordance with the manufacturer's specifications . Remove and dispose of excess material . If sign construction disturbs the site, level and repair the area. Install signs and supports in accordance with the tolerances specified in this subsection.

sign. Patch extra holes on the front and back sign surfaces . Use patch material of the same reflectivity, color, and age as the reflective sheeting on the sign. Apply patches in accordance with the sheeting manufacturer’s recommendations.

but do not erect signs closer to the edge of the traveled way than the distance shown on the plans or as specified in MDOT’s Sign Support Standard Plans SIGN 120 series .

within 6 inches of the height shown on the plans, and in urban areas, within 6 inches above the bottom height shown on the plans.

passing zone signs or signs on cantilevers, trusses, and bridge connections without the Engineer’s approval. Place advance warning signs within 10 feet longitudinally from the location shown on the plans . Place the advance warning signs at least the minimum longitudinal distance specified in the MMUTCD. Place other signs within 20 feet, longitudinally, of the location shown on the plans.

1/16 inch.

Department, from the location shown on the plans to the project . Notify the Department contact person at least 72 hours before picking up the sign. MDOT Standard Specifications for Construction Section 810

8-52T. Hanger Mounts and Wall Mounts . Fabricate and install hanger and wall

mounts including drilling for anchor installation in accordance with sections 707, 712, and 810, MDOT’s Sign Support Standards , or as required. Test the s tructural anchor system in accordance with section 712.

and truss sign supports using the methods required for erecting the supports . Remove, haul, and stockpile Type I signs, cantilevers, trusses, column breakaways , bridge connections , and all associated attaching or fastening hardware at the offsite location required . Coordinate delivery of salvaged items with the Department contact person at least 72 hours before transporting to the Department property location as shown on the plans or as directed by the Engineer. Take ownership of remaining signs, supports, and associated attaching or fastening hardware. Pull, do not cut, sign and delineator supports requiring removal or replacement . If the Engineer determines that posts or columns cannot be pulled, cut off at least 12 inches below grade and fill the hole . For sign supports in concrete surfaces, cut the support at the surface. Fill in the hole with grout or similar material completely . Finish to provide a smooth surface free from irregularities. Remove bridge sign connections , welded to steel beams, by flame cutting. Leave a ¼ -inch projection from the web. Grind the projection flush with the surface of the web to a surface roughness no greater than 250 micro inches per inch root mean square. Coat the surface with an Engineer -approved zinc -rich primer after gr inding. To remove bridge sign connections , bolted to steel beams, dismantle the bridge sign in reverse order from installation. If replacing an existing sign support, fill unused holes in bridge steel beams with galvanized high-strength bolts, installed in accordance with subsection 707.03. E.6. Remove bridge mount sign connection anchor bolts to concrete surfaces by unbolting or cutting if the connection detail is not to be reused. Flame cutting of sign connections is prohibited. Cut and gr ind flush anchor bolts embedded in the concrete. Core drilling for anchor bolt or insert removal is prohibited. Coat the exposed ends of the anchor bolts with an epoxy grout or a tinted organic zinc -rich primer in accordance with section 715. If removing trusses or cantilevers, separate the truss box or cantilever arms without damaging the unit . Remove the truss box or cantilever arms before removing end supports . Remove end supports in reverse order MDOT Standard Specifications for Construction Section 810 8-53 from installation. Do not torch cut uprights of the end supports for removal . Do not scratch, scorch, or nick the cantilever or truss members.

12 inches below the ground surface and backfill in accordance with subsection 204.03.C . If the contract requires complete removal of a foundation, remove sign support foundations in accordance with subsection 204.03.A.3 and backfill in accordance with subsection

204.03. C after new foundation is installed

Dispose of concrete and other deleterious material in accordance with subsection 205.03.P . Topsoil, seed, and mulch the removal area in accordance with subsection 816.03.

signs and sign supports, salvaged for use on the project, in accordance with subsection 810.0 3.R. Transport, store, and erect salvaged supports and signs in accordance with subsection 810.03. U. Replace salvaged signs with damage or defects with new signs at no additional cost to the Department. Upon erection of salvaged sign supports , stencil the structure support per subsections 810.03.L and 810.03.M as applicable.

810.04. Measurement and Payment

Pay Item Pay Unit Delineator Reflector, (color) ...................................................................... Each Post, (type), Delineator ............................................................................. Each Delineator, Reflective Sheeting, __ inch by __ inch, (color) ...................... Each Post, Steel, __ lb ........................................................................................ Foot Post, Wood, __ inch by __ inch ................................................................. Foot Post, Wood, __ inch by __ inch, Direct Embedment .................................. Foot Post Hole Through Conc for Wood Post ................................................... Each Post Hole Through Conc for Steel Post .................................................... Each Band, Sign ................................................................................................ Each Median Barrier Connection, Conc, Perforated Steel Square Tube ........... Each Glare Screen Connection, Conc, Perforated Steel Square Tube .............. Each Perforated Steel Square Tube Breakaway System ................................... Each Fdn, Breakaway, W8 by (wt/ft) .................................................................. Each Fdn, Cantilever, Type __ ........................................................................... Each Fdn, Truss, Type __ .................................................................................. Each Fdn, Truss Sign Structure Type __, __ inch Dia, Cased ............................ Foot Fdn, Truss Sign Structure Type __, __ inch Dia, Uncased ........................ Foot Fdn, Cantilever Sign Structure Type __, __ inch Dia, Cased ..................... Foot Fdn, Cantilever Sign Structure Type __, __ inch Dia, Uncased ................. Foot MDOT Standard Specifications for Construction Section 810

8-54Column, Breakaway , W8 by (wt/ft) ............................................................ Each

Cantilever, Type __ ................................................................................... Each Truss, Type __, __ foot ............................................................................. Each Sign, Type __ ................................................................................. Square Foot Bridge Sign Connection, Conc, Type __ ................................................... Each Bridge Sign Connection, Steel, Type __ ................................................... Each Bridge Sign Connection, Bolt Replacement .............................................. Each Overhead Lane Assignment Structure ...................................................... Each Installing MDOT Supplied Sign, Type __ .................................................. Each Sign, Type __, Rem .................................................................................. Each Fdn, Wood Support, Rem ......................................................................... Each Fdn, Entire, Cantilever, Rem ............................................................ Cubic Yard Fdn, Entire, Truss, Rem ................................................................... Cubic Yard Fdn, Column Breakaway , Rem ................................................................. Each Fdn, Cantilever, Rem ................................................................................ Each Fdn, Truss, Rem ....................................................................................... Each Cantilever, Rem ........................................................................................ Each Truss, Rem ............................................................................................... Each Bridge Sign Connection, Type __, Rem .................................................... Each Transporting Salv MDOT Materials .................................................. Lump Sum Cantilever, Type __, Erect, Salv ................................................................ Each Truss, Type __, __ foot, Erect, Salv .......................................................... Each Sign, Type __, Erect, Salv ........................................................................ Each Truss Connection, Hanger Mt d ................................................................. Each Sign Connection, Wall Mt d ........................................................................ Each Reflective Panel for Permanent Sign Support, __foot ............................... Each Fdn, Perforated Steel Square Tube Sign Breakaway System, Rem ......... Each Delineator, Rem ....................................................................................... Each Bracket, H ................................................................................................. Each The unit prices for fabricated items include the cost of providing dimensional information for the relevant fabricated item.

to the nearest commercial length required. The Department will not pay for the portion of posts installed deeper than the depth shown on the plans, unless authorized by the Engineer. The unit price for Post, Wood of the type required includes the cost of providin g and installing wood post sign supports set in a sleeve in concrete.

Through Concrete for Wood Posts . The unit prices for Post Hole MDOT Standard Specifications for Construction Section 810

8-55Through Conc for Steel Post and Post Hole Through Conc for

Wood P ost include the cost of drilling or saw cutting a hole in existing concrete, silicone sealer, cleaning the site, and replacing damaged concrete. If installing posts in new concrete, the unit prices for Post Hole Through Conc for Steel Post and Post Hole Th rough Conc for Wood Post include the cost of the optional method of forming.

Reflective Panel for Permanent Sign Supports includes all labor, materials, and equipment required to fabricate, f urnish, and install the reflective panel to the sign supports as depicted on the plans or as directed by the Engineer.

The unit pr ice for Glare Screen Connection, Conc, Perforated Steel Square Tube and Median Barrier Connection, Conc, Perforated Steel Square Tube includes all labor, materials, and equipment required to fabricate, furnish, and install the connections in accordance with MDOT ’s Sign Support Standards or as directed by the Engineer.

Sign Structure . The Engineer will measure Fdn, Truss Sign Structure and Fdn, Cantilever Sign Structure of the diameter required, from the bottom of the drilled shaft to the top of the finished foundation. The unit prices for Fdn, Truss Sign Structure Type __, __ inch Dia, Cased and Fdn, Cantilever Sign Structure Type __, __ inch Dia, Cased include the cost of concrete, slurry, steel reinforcement, permanent casings, anchor bolts , excavation, and disposal of excavated material.

Cantilever Sign Structure, Uncased . The unit prices for Fdn, Truss Sign Str ucture Type __, __ inch Dia, Uncased and Fdn, Cantilever Sign Structure Type __, __ inch Dia, Uncased include the cost of concrete, slurry, steel reinforcement, temporary casings, anchor bolts , excavation, and disposal of excavated material. MDOT Standard Specifications for Construction Section 810

8-56C. Bridge Sign Connections . The unit prices for bridge sign connection pay

items include the cost of locating connections and constructing and installing the sign supports. The unit price for Bridge Sign Connection , Bolt Replacement includes the cost of bolted bridge connections , including retained diaphragms and hangers on steel bridges, and removing and replacing bolts and associated hardware. Removed bolts and hardware become the property of the Department.

Connection, Hanger Mt d and Sign Connection , Wall Mtd include the cost of furnishing, drilling for anchorage, and installing truss and sign connections at the location shown on the plans.

Lane Assignment Structure includes the cost of constructing t he foundations for installing structures and lane assignment signs.

determining the area of sign faces . The Engineer will calculate the area using the smallest circumscribing rectangle . The Engineer will calculate the area of triangular signs using the area of the circumscribing triangle. The unit price for Sign , of the type required, includes the cost of attaching devices and hardware, including fabricating brackets , erecting signs on supports , pruning vegetation, and site cleanup in accordance with subsection 810.03.R . H brackets will be paid for separately. The Engineer will measure individual sign bands for payment . The unit price for Band, Sign includes the cost of furnishi ng and installing each sign band. The unit price for Sign, Type II includes the cost of fabricating signs, workmanship, repair, and sealing plywood edges in accordance with subsection 919.02.A.2. Before final acceptance, replace or repair approved for use and in-use traffic sign installations that are damaged by conditions not caused by the Contractor, as directed by the Engineer. The Department will pay for replaced items at the contract unit price unless the Contractor justifies that the elapsed time betw een initial installation and the replacement installation warrants a price adjustment in accordance with Section 103. The Department will pay for repaired items as extra work.

costs incurred for the certification of structural steel plants . The MDOT Standard Specifications for Construction Section 810

8-57Department will not consider claims by the Contractor or f abricator for

delays and inconvenience associated with the certification process.

Supplied Sign of the type required includes the cost of loading the sign at the location shown on the plans, transportation, sign-mounting hardware, and installation.

type r equired includes the cost of removing supports, sign bands , concrete glare screen connections, or concrete median barrier connections ; attaching or fastening hardware; and removing signs from supports and stacking by shape and size. The unit prices for Can tilever, Rem and Truss, Rem include the cost of removing cantilever or truss supports. The unit price for Bridge Sign Connection , Rem of the type required includes the cost of removing connection brackets, hardware, and filling unused holes created by the removal ; cutting and grinding existing anchor bolts ; and grouting and/or coating the exposed ends . The unit prices for constructing or removing foundations include the cost of placing topsoil, seeding, and mulch and restoring the area.

Salv MDOT Materials includes the cost of loading, transporting, unloading, and stac king salvaged materials at the off -site location shown on the plans or directed by the Engineer.

for Cantilever, Erect, Salv and Truss, Erect, Salv of the types required include removing, loading, transporting, unloading, storing after removal , and erecting the salvaged sign support on a new or existing foundation, as shown on the plans.

required includes removal, the cost of storing signs after removal and loading, transporting, unloading, and erecting the salvaged sign on a new sign support or existing sign support, as shown on the plans, and attaching devices, and hardware, including brackets. The Department will pay separately for new sign supports.

providing and installing the delineator post of the type specified. MDOT Standard Specifications for Construction Section 810

8-58N. Bracket . Provide and install brackets to fasten multiple signs or route

marker cluster bracket to the supports in accordance with MDOT’s Sign Support Standard Plans SIGN 740 series, or as directed by the Engineer.