802.01Description
This work shall consist of furnishing the material for and erecting traffic signs in accordance with 105.03. Signs shall be installed as required unless written approval is obtained from the District Traffic Engineer to make modifications at specific locations.
Existing ground mounted signs to be reset shall be removed without damage, stored and re-installed as shown on the plans.
Signs shall be stored in such a manner that they do not come in contact with surface run-off water. Signs shall be stored so that moisture accumulation or heat build-up does not occur.
All signs shall be marked for identification as shown on the plans. The marking shall consist of a Type II sheeting material, with a class I adhesive, shown on the QPL of Reflective Sheeting. It shall be applied to the back of the sign on the lower corner closest to the nearest edge of pavement and shall not be covered by the sign’s supports.
MATERIALS 20
802.02Materials
Materials shall be in acco rdance with the following:
Fasteners ...................................................................... 919.01(d) 802.01
Overhead Sign Structure .............................................. 910.19 Packaged Patc hing Products ........................................ 901.08 Reinforci ng Bars .......................................................... 910.01 Sign Posts .................................................................... 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
802.03Location 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 notice of necessary changes. The provisions of
109.03will 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.
802.04Working 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.
802.05Excavation 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
206.02encountered 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 material 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 except in sandy soil, or as directed.
802.06Placing Concrete
Placing concrete shall be in accordance with 702, except that foundations incorporated into sections of concrete barrier wall shall receive a finish in accordance 70 with 702.21. Exposed concrete shall have a smooth surface and beveled edges.
802.06
Anchor bolt alignment shall be maintained 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.
802.07Installing Supports 80
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 tightened in accordance with 711.65(d) or by the direct tension indicator, DTI, method. 100
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 measuring device such as a Skidmore-Wilhelm.
802.07
Anchor bolt hardware tightening shall be by the turn of the nut method and as follows: 120
24 h prior to tightening.
foundation shall be less than the diameter of the bolt, unless specified otherwise.
the plans, or in accordance with the FHWA “Guidelines for the Installation, Inspection, Maintenance and Repair of Structural Supports for Highway Signs, Luminaires, and Traffic Signals”.
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.
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
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
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 additional 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.
The required camber shall be achieved in accordance with the manufacturer’s recommendations as detailed on the working drawings.
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.
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
surface shall be given one coat of zinc chromate 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.
802.08Installing 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
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 aluminum240
sheeting, or damage to the reflective sheeting.
Panel signs shall be mounted as follows:
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.
250
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.
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.
260
802.09Removal, Resetting, or Relocation 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 with a material which matches that in the270
surrounding area.
802.10Roadway 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.
802.11Method 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 make280
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 during 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
901
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.
310
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.
802.12Basis 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 the contract unit price per each, complete in330
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
type350
802.12
902
Cable Span Sign Structure 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, _____ ............................. EACH360
type
Overhead Sign Structure, Bridge 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 ................................ EACH370
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 ........................................................... EACH380
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
thickness390
Structural Steel, Breakaway ...................................................... LBS
Tri-Chord Sign Structure 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, sodding, seeding, and necessary incidentals
shall be included in the cost of overhead sign structure, remove.
The cost of walkway assembly, where applicable, 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 signs 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 assemble 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 including 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 in430
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 hardware440
necessary to attach the existing sign to new posts, shall be included in the cost of the
sign relocation.
802.12
904
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 the 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 class 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.
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