CONDUIT SECTION 1062 722 SECTION 1062 — CONDUIT
1062.1Material Requirements.
Provide conduit, sweeps, end caps, conduit bodies, conduit hangers, bushings, and all applicable appurtenances of compatible materials in accordance with the contract and these requirements.
A.Galvanized Steel Conduit:
1.Hot-dipped galvanized.
2.Conform to the requirements of ANSI C80.1, UL -6 and UL -514B.
3.Conform to the NEC 2011, Article 344.
4.UL listed.
B.HDPE SDR 13.5 Conduit:
1.Confor m to N EC 2017, Article 353.
2.For fiber optic conduit, paint in white letters longitudinally, “DelDOT traffic fiber optic cable.”
3.For lighting conduit, paint in white letters longitudinally, “DelDOT lighting cable.”
4.For traffic signal conduit, paint in white letters longitudinally, “DelDOT traffic signal cable.”
5.UL listed .
C.Schedule 80 PVC Conduit:
1.Conform to ASTM D2665.
2.Conform to NEC 201 7, Article 352.
3.Conform to ASTM D1785.
4.Conform to U.L. Standard 651 specifications for conduit.
5.Conform to U.L. Standard 614b specifications for fittings.
6.For fiber optic conduit, paint in white letters longitudinally, “DelDOT traffic fiber optic cable .”
7.For lighting conduit, paint in white letters longitudinally, “DelDOT lighting cable .”
8.For traffic signal conduit, paint in white letters longitudinally, “DelDOT traffic signal cable .”
9.UL listed .
D.Flexible Metallic Liquid Tight Conduit:
1.Conform to the NEC 2017, Article 350.
2.UL listed.
E.Nonmetallic Pole Riser Shield with Belled Ends:
1.Rural utility service (RUS) listed.
2.Conform to NEMA TC -19 specifications.
3.Conform to NEC 2017, Article 352.
F.Conduit Hangers:
CONDUIT SECTION 1062 723 1. Steel City series 6H or 6H -B.
2.Grainger Industrial supply item # 2000 or 2200.
3.Raco/Hubbell, Inc. – conduit hangers.
4.Approved equal.
G.Conduit/Duct Sealant:
1.Polywater FST.
2.Appleton TMC2x with rapidex gel.
3.Nelson firestop.
4.Approved equal.
H.Pulling Rope:
1.Polyester or polypropylene with a minimum rated strength of 1,250 -pounds.
I.Conduit Warning Tape:
1.6-inches wide.
2.Minimum thickness of 3 -mils.
3.500 percent elongation.
4.Tape identifying fiber optic cable:
a.Color – bright orange (AULCC orange).
b.Text on label that re ads “WARNING – OPTICAL CABLE.”
5.Tape identifying all other cables:
a.Color – bright red.
b.Text on label t hat reads “WARNING – BURIED ELECTRIC BELOW.”
GUARDRAIL SECTION 1070 724 SECTION 1070 — GUARDRAIL
1070.1Materials.
Provide materials for guardrail, rub rail, structural steel posts, and related hardware in accordance with the contract and these requirements:
A.Steel Posts, Steel Offset Blocks, and Steel Shapes - ASTM A769 and hot -dipped galvanized per
AASHTO M111.
B.Beams - AASHTO M180, Class A, except where specified as Class B Type I or Type II and hot -dipped
galvanized per AASHTO M111.
C.Hardware - AASHTO M180 and zinc coated per AASHTO M232.
D.Rods and Turnbuckles - Minimum tensile strength of 60,000 pounds and hot -dipped galvanized
per AASHTO M111.
E.Swaged Cable Assembly for Guardrail End Treatment - ANSI B1.13M, M24 x 3 - 6g with the cable
swaged into the fitting:
1.Stud. Meets ASTM A741, Class C or ASTM B695, class 50.
Machine the hot -rolled ASTM A576, Grade 1035 carbon steel and zinc -coat per AASHTO M111 before swaging . Anneal suitably for cold swaging . Mill into the stud end a 3/8-inch slot for the locking pin before application of the zinc coating. Drill a lock pin hole through the head of the swaged fitting to accommodate a 1/4-inch plated spring -steel pin to retain the stud in the proper position .
F.Wire Rope - AASHTO M30 and 3/4 -inch diameter, 6 by 19 wire stem/core or independent wire
rope core (IWRC), zinc -coated, right regular lay wire rope with a minimum breaking strength of 42,000 -pounds.
G.Guardrail Reflectors - Fabricated from steel sheet plates per ASTM A6 and galvanized to AASHTO
M232. Retroreflective sheeting per ASTM D4956, Type IV abrasive resistant .
H.Timber Post, Blocks, and Offset Blocks - Dimensions per the Standard Construction Details.
1.Composite offset blocks in accordance with DelDOT’s Approved Product List.
2.Timber used for post, blocks, and offset blocks per Section 621 and the preservative treatment
per Section 1041.4. A.5.
a.Only use timber offset blocks when explicitly required by the Standard Construction Details or
manufacturer’s installation requirements.
PAVEMENT MARKINGS SECTION 1071 725 SECTION 1071 — PAVEMENT MARKINGS
1071.1Latex Pavement Markings.
A.Provide latex paint meeting the requirements of 1071.1.1 and glass beads meeting the
requirements of 1071.1.2 that when combined, meet the retroreflectivity requirements of 1071.1.3. 1071.1.1 Latex Paint.
A.Provide a ready -mixed emulsified pigmented binder which is capable of anchoring glass beads.
B.The latex paint is to meet the following physical and composition requirements:
1.Pigment.
a.The pigment portion is to be a combination of pigments as required to produce a finished
product color matching Federal Test Standard No. 595A, Latest Edition, No. 33538 for Yellow and No. 37886 for White.
b.For white paint, use rutile type titanium dioxide conforming to ASTM D476 at a minimum rate
of 1 pound per gallon as the prime pigment.
c.For yellow paint, use a non -toxic organic yellow pigment and rutile type titanium dioxide
conforming to ASTM D476 at a minimum rate of 0.2 pounds per gallon.
d.Percent pigment by weight of the finished product is not to be less than 60 percent and not
more than 62 percent.
2.Vehicle.
a.Use a non -volatile vehicle that is not less than 42 percent by weight.
3.Organic Volatiles.
a.The volatile organic content (VOC) of the finished paint is to contain less than 1 .25 pounds per
gallon of volatile organic matter of total Non -volatile paint material.
4.Volume of Solids.
a.The finished paint will not be less than 61 percent solids by volume, when tested in
accordance with ASTM D2369.
5.Total Solids.
a.The finished paint is not to be less than 77.5 percent total non -volatiles by weight, when
tested in accordance with ASTM D2369.
6.Grind.
a.Not less than 2 Hegman when tested in accordance with ASTM D1210.
7.Laboratory Drying Time.
a.Not more than 10 -minutes when tested in accordance with ASTM D711.
8.Viscosity. Not less than 70 nor more than 95 KREB units at 77 degrees F, when tested in
accordance with ASTM D562. PAVEMENT MARKINGS SECTION 1071 726
9.Flexibility. Show no cracking or flaking when tested in accordance with Federal Specification TT -
P 1952F .
10.Dry Opacity. The minimum contrast ratio is to be 0.95 when tested in accordance with ASTM
D2805 at a wet film thickness of 5 -mils.
11.Abrasion Resistance. The abrasion resistance is to be such that no less than 210 -liters of sand
will be required for removal of the paint film when tested in accordance this Federal Specification TT -P-1952F.
12.Freeze -Thaw Stability. Show no coagulation or change in consistency greater than 5 KREB units,
when tested in accordance with Federal Specification TT -P-1952F .
13.Dilution Test. Be capable of dilution with water at all levels without curdling or precipitation
such that the wet paint can be readily cleaned up with only water.
14.Dry Through (Early Washout). The dry through time of a 15 -mil wet film placed immediately in a
Humidity Chamber, maintained at 72.5 plus or minus 2.5 degrees F and 90 plus or minus 5 percent relative humidity will not be less than or equal to the Department Laboratory reference film when tested in accordance with ASTM D1640, except that the pressure exerted the minimum needed to maintain contact with the thumb and film.
15.Bleeding. Have a minimum bleeding ratio of 0.98 when tested in accordance with the method
given in Federal Specification TT -P-1952F. The asphalt -saturated felt is to conform to FS HH -R- 590. 1071.1.2 Glass Beads.
A.Provide AASHTO M247 Type 1 glass beads with the following additional properties:
1.Have moisture resistant coating which passes AASHTO T346 Moisture Resistant Coating Test,
2.Are a minimum of 80 percent true spheres when tested in accordance with ASTM D1155, and
3.Flow freely from dispensing equipment.
1071.1.3 Retroreflectivity.
A.Obtain the following minimum reflectivity values when tested with a Retroreflectometer with 30 -
meter geometry, or Department approved equal:
1.150 millicandellas for white lines.
2.125 millicandellas for yellow lines.
1071. 2 Epoxy Pavement Markings.
A.Provide epoxy paint meeting the requirements of 1071. 2.1 and glass beads meeting the
requirements of 1071. 2.2 and 1071.2.3 that when combined , meet the retroreflectivity requirements of 1071. 2.6. Provide black contrast markings meeting 1071.2.4 and black aggregate meeting 1071.2.5 when required by the contract.
1071.2.1 Epoxy Paint. PAVEMENT MARKINGS SECTION 1071 727 A. Composition Requirements.
1.Use an epoxy resin composition specifically formulated for use as a hot -spray application at
elevated temperatures.
2.Comprised of a 2-component (part A and part B), 100 percent solids type system formulated and
designed to provide a simple volumetric mixing ratio.
3.Component A.
a.Conform to the requirements of Table 1071.2 -1.
Table 1071.2 -1. Component A Requirements, % by Weight White Yellow Pigments Titanium Dioxide - 18% Min. (rutile type conforming to ASTM D476) Organic Yellow - 6%-10% Titanium Dioxide – 10% min. (rutile type conforming to ASTM D476) Epoxy 75% Min., 82% Max. 70% Min., 80% Max.
b.Component A white shall contain no extender pigments.
c.The epoxy content of the epoxy resin will be tested in accordance with ASTM D1652 and
calculated as the weight per epoxy equivalent (WPE). The epoxy content will be determined on a pigment free basis. The epoxy content (WPE) is to be within + 50 of the target value provided by the manufacturer.
4.Component B.
a.The amine value of the curing agent will be tested in accordance with ASTM D2074 to
determine its total amine value. The total amine value is to be within + 50 of the target value provided by the manufacturer.
B.Physical Properties.
1.Unless specified otherwise, all samples are to be prepared and tested at an ambient
temperature of 73 ± 5 degrees F.
2.Toxicity. The material is to not exude fumes which are toxic or injurious to persons or property
Upon heating to application temperature.
3.Color.
a.The white epoxy composition when applied at a minimum wet film thickness of 20+1 mils as
applicable and allowed to dry, is to plot within the boundaries described by the four corner points listed in Tables 1 and 2 of ASTM D6628 when measured in accordance with the test methods prescribed in Section 7 of ASTM D6628.
b.The yellow epoxy composition when applied at a minimum wet film thickness of 20 +1 mils as
applicable and allowed to dry, is to plot within the boundaries described by the four corner points listed in Tables 1 and 2 of ASTM D6628 when measured in accordance with the test methods prescribed in Section 7 of ASTM D6628.
4.Directional Reflectance.
PAVEMENT MARKINGS SECTION 1071 728 a. The white epoxy composition (without glass spheres) is to have a daylight directional reflectance of not less than 84 percent relative to a magnesium oxide standard when tested in accordance with ASTM E1347.
b.The yellow epoxy composition (without glass spheres) is to have a daylight directional
reflectance of not less than 55 percent relative to a magnesium oxide standard when tested in accordance with ASTM E1347.
5.Laboratory Drying Time. The epoxy composition is to exhibit a no -track condition in 15 -minutes
or less when tested in accordance with ASTM D711 and applied with glass beads at the proper saturation.
6.Abrasion Resistance. The wear index of the composition is not to exceed 82 when tested in
accordance with ASTM D4060 using a CS -17 wheel and under a load of 1000 grams for 1000 cycles.
7.Tensile Strength. The tensile strength of the epoxy composition is to be 6000 psi or greater
when tested in accordance with ASTM D638 using a Type IV specimen. Specimens shall be cured between 24 -hours to 96 -hours at 75 ± 5 F.
8.Compressive Strength. The compressive strength of the epoxy composition is to be 12,000 psi or
greater when tested in accordance with ASTM D695. Test specimens shall be cured 24 -hours to 96-hours at 75 ± 5 degrees F .
9.Hardness. The epoxy composition is to have a Shore D hardness between 75 and 100 when
tested in accordance with ASTM D2240 after a sample drying period not less than 24 -hours nor more than 96 -hours prior to testing.
10.Adhesion to Concrete. Have a 100 percent concrete failure and 4000 psi minimum adhesion to
the concrete surface when tested in accordance with ACI Method 503 . 1071.2.2 Type 1 Glass Beads
A.Provide AASHTO M247 Type 1 glass beads with the following additional properties:
1.Have moisture resistant coating which passes AASHTO T346 Moisture Resistant Coating Test,
2.Are a minimum of 80 percent true spheres when tested in accordance with ASTM D1155,
3.Silica content of the glass sphere is not less than 60 percent ,
4.The average crushing resistance of the spheres when tested in accordance with ASTM D1213 will
be a 40 -pound dead weight, for 20 to 30 mesh spheres . 1071.2.3 Type 4 Glass Beads
A.Provide AASHTO M247 Type 4 glass beads with the following additional properties:
1.Have moisture resistant coating which passes AASHTO T346 Moisture Resistant Coating Test,
2.Are a minimum of 80 percent true spheres when tested in accordance with ASTM D1155,
3.Silica content of the glass sphere is not less than 60 percent ,
4.The average crushing resistance of the spheres when tested in accordance with ASTM D1213
will be a 40 -pound dead weight, for 20 to 30 mesh spheres . PAVEMENT MARKINGS SECTION 1071 729 1071.2.4 Black Contrast Markings
A.Composition Requirements.
1.Use material composed only of epoxy resins and pigments for use as a hot -spray applied binder
for black aggregate at elevated temperatures.
2.Comprised of a 2 -component (part A and part B), 100 percent solids type system formulated and
designed to provide a simple volumetric mixing ratio.
3.Conform to the requirements in Table 1071.2 -2.
Table 1071.2 -2 Black Contrast Marking Composition Requirements Component Percent by Weight Carbon Black 7±2 percent, by weight Talc 14±2 percent, by weight Epoxy Resin 79±4 percent, by weight 1071.2.5 Black Aggregate
A.Provide angular aggregate with no dry dispensement pigment meeting the following physical
properties.
B.Gradation. Conform to the requirements (AA SHTO T27) in Table 1071.2 -3.
Table 1071.2 -3 Black Aggregate Gradation Requirements Sieve Size Percent Retained #20 17-37% #30 45-65% #40 14-25%
C.Moisture Resistant. Provide a moisture resistant coating.
1071.2.6 Retroreflectivity
A.Obtain the following minimum reflectivity values when tested with a Retroreflectometer with 30 -
meter geometry, or Department approved equal:
1.450-millicandellas for white lines.
2.325-millicandellas for yellow lines.
3.Any single reading may not be less than 350 -millicandellas for white and 250 -millicandellas for
yellow.
1071.3Alkyd Type Thermoplastic Pavement Markings
A.Provide alkyd type thermoplastic striping material meeting the requirements of 1071.3.1 and glass
beads meeting the requirements of 1071.3.2 that when combined, meet the retroreflectivity requirements of 1071.3.3. 1071.3.1 Alkyd Type Thermoplastic Striping Material.
A.General.
PAVEMENT MARKINGS SECTION 1071 730 1. Provide thermoplastic striping material meeting the requirements of AASHTO M249 that is capable of fusing itself to asphalt, concrete pavement, high friction surface treatments, or previous thermoplastic markings.
2.Material must not deteriorate or discolor when reheated.
B.Environmental Conditions.
1.Does not deteriorate upon contact with sodium chloride, calcium chloride, or other de -icing
chemicals or because of oil content of paving materials or oil drippings.
2.Does not permanently discolor or soften by contact with hot -mix bituminous concrete.
C.Bond Strength. Bond strength to pavement greater than 180 psi when tested in accordance with
ASTM D4796.
D.Alkyd Binder.
1.Binder to consist of a mixture of synthetic resins, at least one of which is solid at room
temperature, and high boiling point plasticizer.
2.Solid maleic -modified glycerol ester resin is at least one -third of the binder composition and is
no less tha n 8 percent by weight of the entire material formulation.
3.The binder contains no petroleum based hydrocarbon resins.
E.Titanium Dioxide. Provide Rutile Type titanium dioxide conforming to ASTM D476 .
F.Flash Point. Material flashpoint no less than 475 degrees F when tested in accordance with ASTM
D92. 1071. 3.2 Glass Beads.
A.Provide AASHTO M247 Type 1 glass beads with the following additional properties:
1.Have moisture resistant coating which passes AASHTO T346 Moisture Resistant Coating Test,
2.Have a minimum of 70 percent true spheres on each sieve and 80 percent true spheres overall
when tested in accordance with ASTM D1155 . 1071. 3.3 Retroreflectivity .
A.Obtain the following minimum reflectivity values when tested with a Retroreflectometer with 30 -
meter geometry, or Department approved equal:
1.300-millicandellas for white lines .
2.200-millicandellas for yellow lines .
1071.4Preformed Thermoplastic Pavement Markings
A.General.
1.Provide a resilient preformed thermoplastic pavement marking material meeting the
requirements of AASHTO M249.
2.The pavement marking material must adhere to pavement contours , breaks, and faults through
the action of traffic at normal pavement temperatures. PAVEMENT MARKINGS SECTION 1071 731 3. Have resealing and patching characteristics.
4.Have the capability of fusing to itself to previously applied worn hydrocarbon or alkyd
thermoplastic pavement markings.
5.Have adequate flexibility to allow installation without material cracking.
B.Installation Methods.
1.Use preformed thermoplastic pavement marking material that is fusible to new or existing PCC
or bituminous concrete pavements through use of the heat of an infrared heater, the normal heat of a propane type torch, or blueflame heater . Use of adhesives, primers, or sealers will only be allowed for PCC pavement applications .
2.The product must not require the use of a grid template or require the creation of pattern
grooves or other indentations in the asphalt or concrete surface prior to installing the material.
3.The product must not require the use of a compactor or similar equipment.
4.The individual pieces in each material segment must be factory assembled with a compatible
material and interconnected so that in the field it is not necessary to assemble the individual pieces within a material segment.
5.The material must be able to be applied in temperatures down to 45 degrees F without any
preheating or treatment of the material before application
C.Environmental Resistance.
1.Resistant to deterioration due to exposure to sunlight, water, oil, diesel fuels, gasoline,
pavement oil content, salt, lubricants, hydraulic fluids, and adverse weather conditions once applied.
2.The preformed retroreflective thermoplastic material must not dissolve or smear after rubbing a
small amount of motor oil on a small piece of the thermoplastic material for two minutes.
D.Heating Indicator. Provide regularly spaced and evenly distributed indents on the top of the
preformed thermoplastic material that give a visual cue during application that the material has reached a molten state to allow for determination of satisfactory adhesion and embedment and gives a post -application visual cue that the application procedures have been followed.
E.Skid Resistance.
1.The surface of the preformed thermoplastic material is to contain factory applied nonskid
material with a minimum hardness of 7 (Mohs scale).
2.The material must provide a minimum skid resistance value of 55 BPN when tested in
accordance with ASTM E303.
F.Thickness.
1.Provide a material that covers the entire application area so that no part of the pavement
surface is visible in the application area.
2.Have a minimum average thickness of 90-mils for all longitudinal lines and a thickness of 125-
mils for all transverse lines and symbols/legends.
G.Bond Strength. Bond strength to pavement greater than 180 psi when tested in accordance with
ASTM D4796. PAVEMENT MARKINGS SECTION 1071 732 H. Flash Point. Material flashpoint no less than 475 degrees F when tested in accordance with ASTM D92.
J.Retroreflectivity .
1.Obtain the following minimum reflectivity values when tested with a Retroreflectometer with
30-meter geometry, or Department approved equal:
a.300-millicandellas for white lines .
b.200-millicandellas for yellow and blue lines .
1071.5Preformed Pavement Marking Tape
A.General.
1.Provide performed pavement marking tape conforming to ASTM D4505, Level I, Class 2 or 3,
Skid Resistance Level A.
2.Use preformed pavement marking tape that is not affected by weather condition and is suitable
for application on new or existing PCC or bituminous concrete pavements.
3.Use only markings capable of providing required retroreflectivity during both wet and dry
conditions.
4.Provide material that resists deterioration by contact with highway deicing chemicals or because
of the oil content of asphalt concrete pavement, or from oil droppings and other effects of traffic.
5.Provide a surface adhesive activator or primer sealer when not placed by in -laid method in
accordance with manufacturer’s recommendations.
6.Guaranteed with a manufacturer’s warranty.
B.Composition.
1.The pavement marking is to consist of a mixture of high -quality polymeric materials and
pigments with glass beads distributed throughout the base cross -sectional area, with a reflective layer of microcrystalline ceramic beads bonded to a durable polyurethane topcoat surface. Beads are to meet the requirements of 1071.5.C.
2.The patterned surface is to have approximately 50 percent plus or minus 15 percent of the
surface area raised and presenting a near vertical face, angled from 0 -degrees to 60 -degrees, to traffic from any direction.
3.The channels between the raised areas are to be substantially free of exposed beads or
particles.
4.The marking is to be manufactured without the use of lead chromate pigments or other similar,
lead -containing chemicals.
C.Beads.
1.Index of Refraction.
a.‘Dry-performing’ beads bonded to the polyurethane -coated, patterned surface of the material
are to have a minimum index of refraction of 1.70 when tested using the liquid oil immersion method. PAVEMENT MARKINGS SECTION 1071 733 b. ‘Wet-performing’ beads bonded to the polyurethane -coated, patterned surface of the material are to have a minimum index of refraction of 2.30 when tested using the liquid oil immersion method.
c.Beads mixed into the pliant polymer shall are to have a minimum index of refraction of 1.50
when tested by the liquid oil immersion method.
2.Acid Resistance.
a.The beads are to show resistance to corrosion of their surface after exposure to a 1% solution
(by weight) of sulfuric acid.
b.The 1 percent acid solution is made by adding 5.7 cc of concentrated acid into 1000 cc of
distilled water.
D.Color. The markings is to consist of white and/or yellow films with pigments selected and blended
to conform to ASTM D6628.
E.Patchability. The pavement marking material is to be capable of use for patching worn areas of
the same type in accordance with manufacturer's instructions.
F.Thickness.
1.Minimum caliper of 0.065 -inches at the thickest portion of the patterned cross section .
2.Minimum caliper of 0.020 -inches at the thinnest portion of the patterned cross section.
G.Tensile Strength. A minimum tensile strength of 80 psi when tested in accordance with ASTM
D3759.
H.Ultimate Elongation. A minimum elongation of 15 percent when tested in accordance with ASTM
D3759.
G.Retroreflectivity.
1.Obtain the minimum reflectivity values when tested with a Retroreflectometer with 30 -meter
geometry, or Department approved equal:
a.500-millicandellas for white lines.
b.300-millicandellas for yellow lines.
1071.6Temporary Pavement Marking Tape
A.Use removable retroreflective pavement marking tape that can be readily removed without the
use of heat, solvents, grinding, or sand blasting and not leave an objectionable residue when markings are removed . The tape must be capable of being removed without tearing into small pieces.
B.The tape shall consist of a mixture of polymeric materials, pigment, and glass beads distributed
uniformly throughout its cross sectional area .
C.Use weather resistant removable tape markings capable of conforming to pavement contours,
breaks, faults, etc. through the action of traffic at normal and climatic weather condition and show no signs of lifting, tearing, shrinkage or other indications of p oor adhesion that may reduce its useful life. PAVEMENT MARKINGS SECTION 1071 734 D. The material must provide a minimum skid resistance value of 45 BPN when tested in accordance with ASTM E303.
E.Use markings that remain wet and dry reflective throughout its useful life.
F.Use markings that are pre-coated with a pressure sensitive adhesive and capable of adhering to
bituminous concrete or PCC at temperatures as low as 50 degrees F in accordance with the manufacturer's recommendations. Provide and use a surface preparation adhesive as recommended by the manufacturer.
G.Retroreflectance. Obtain the following minimum reflectivity values when tested with a
Retroreflectometer with 30 -meter geometry, or Department approved equal:
1.500-millicandellas for white lines
2.300-millicandellas for yellow and blue lines.
1071.7Blackout Pavement Marking Tape
A.Use removable tape that can be readily removed without the use of heat, solvents, grinding, or
sand blasting and not leave an objectionable residue. The tape must be capable of being removed without tearing into small pieces.
B.The tape shall be a matte black, non -reflective, durable, pliant material consisting of a mixture of
polymeric materials, pigments and a friction material evenly distributed throughout its cross - sectional area.
C.The tape shall be in widths or sizes sufficiently large to mask the existing markings which are to be
temporarily covered.
D.The tape shall be capable of adhering to existing markings and bituminous concrete pavement in
accordance with the manufacturer's instructions without the use of heat, solvents or other additional adhesives, and shall be immediately ready for traffic use after application.
E.The tape shall be pre -coated with a pressure sensitive adhesive and capable of adhering to the
pavement and existing pavement markings under climatic and traffic conditions normally encountered in the construction work zone.
F.The material must provide a minimum skid resistance value of 45 BPN when tested in accordance
with ASTM E303. 1071. 8 Raised/ Recessed Pavement Markers
A.Use a cast iron housing that is snow plowable and meets the requirements of ASTM A536, Grade
72-45-84.
B.Use reflectors that meet the requirements of ASTM D4383.
C.Use pavement marker color combinations in accordance with the DE MUTCD.
1071.8.2 Epoxy Resin Adhesive.
A.Use an epoxy resin adhesive that meets the requirements of AASHTO M237, Type IV.
SIGN POSTS SECTION 1072 735 SECTION 1072 — SIGN POSTS
1072.1Galvanized Telescoping Steel Sign Posts.
A.Square tube formed from galvanized sheet structure (physical) quality:
1.ASTM A653, Grade A.
2.ASTM A653 coating designation G90.
B.Regular spangle or formed from hot rolled carbon sheet steel structural (physical) quality:
1.ASTM A653, Grade 50.
C.Use 12 -gauge steel for all square tubes.
D.Use hot -dipped galvanized cold rolled steel:
1.ASTM A653.
2.Coating designation G90, Grade 50, class 1 with regular spangle.
3.Do not allow damage to finished coating.
4.Protect exposed edges against corrosion by sacrificial action when zinc is present on intimate
adjacent areas.
5.Galvanize both the interior and exterior of the post.
E.Use hot -dipped galvanized hot rolled steel, after forming.
1.ASTM A653.
2.Minimum coating of 0.90 ounce per square foot when tested according to ASTM A653 G90.
3.Keep all holes and end openings free of excess amounts of zinc.
F.Permissible tolerances:
1.Wall thickness dimension of 0.1084 inch ± 0.008 inch:
a.Note: the thickness includes both the base metal and the galvanized coating.
2.Nominal outside dimensions measured at least 2 -inches from the end of tube, inches:
a.2 x 2 ± 0.008
b.2-1/4 x 2 -1/4 ± 0.010
c.2-1/2 x 2 -1/2 ± 0.010
3.Measure convexity and concavity in the center of the flat sides, tolerances being ± 0.010 inch
applied to the specific size determined at the corner.
4.Permissible variation tolerance in straightness is 1/16 -inch in 3 -feet.
5.Length tolerance on standard length members with holes is ± 2 1/8-inches.
G.Holes: All 4 sides are to have evenly spaced 7/16 -inch diameter holes on 1 -inch centers the entire
length of the tube:
1.Tolerance on hole size is ± 1/64 -inch.
SIGN POSTS SECTION 1072 736 2. Tolerance on hole spacing is ± 1/8-inch in 20 feet.
H.Fabrication: Provide straight members that have a smooth uniform finish, with all holes and cut
off ends free from burs. Ensure that telescoping freely occurs for consecutive sizes of tubes for 9 feet to 15 feet with a minimum amount of play.
I.Corner radii: Standard corner radius of 5/32 -inch ± 1/64 -inch.
J.Weld flash: Interference of telescoping properties from the corner weld and weld flash is not
permitted.
K.Fasteners - Supply 5/16 -inch Grade 5 unified coarse thread (UNC) corner bolts and nuts, in
conformance with ANSI B1.1, with zinc plating. Install signs with 3/8 -inch x 2 1/2 -inch bolt with locknut and 1 1/2 -inch O.D. washer.
L.Basepost: Provide galvanized basepost sections, with dimensions of 18 -inch x 2.5 -inch and 36 -inch
x 2.25 -inch in accordance with standard construction details.
M.Shipping:
1.Take care in shipping to minimize the rubbing of posts against each other with resulting damage.
2.Damage to the finish of the posts in shipping will result in rejection of the damaged posts.
N.Submit FHWA acceptance letters documenting satisfaction of NCHRP Report 350 or MASH crash
testing requirements.
1072.2Breakaway I -Beam Sign Posts.
A.Supply the I -beams and all mounting hardware:
1.Supply breakaway I -beam sign supports and mounting hardware that have been successfully
crash tested in accordance with NCHRP report 350 or MASH testing criteria.
B.Supply structural steel in accordance with Section 615.2 of the standard specifications.
C.Breakaway couplings:
1.Alloy steel that conforms to AISI 4340, 4130, or an equivalent material.
2.Minimum tensile yield stress of 175,000 PSI.
3.The Rockwell C hardness a minimum of 26.
4.Use couplings with tensile breaking strength ranges as noted below, and of the type in
accordance with the contract:
a.Type A 17,000 -21,000 pounds
b.Type B 47,000 -57,000 pounds
5.Steel meeting requirements of ASTM A370.
6.Provide couplings that are clean, dry, and free from any foreign material, and primed and coated
with a suitable paint that is baked or fused with a polyurethane additive. Provide color of the coating as follows:
a.Type A Yellow
b.Type B Red
SIGN POSTS SECTION 1072 737 7. Repair all damaged areas of the coating surface. Clean all threaded surfaces after coating.
D.Brackets:
1.Aluminum alloy 6061 T -6 or an equivalent material.
2.Provide upper brackets incorporating the load concentrating member or base made from the
following material:
a.Type A Aluminum alloy 6061 T -6 or equivalent as part of brackets.
b.Type B Stainless steel 416 or equivalent ASTM A582 steel with Rockwell hardness
classification of C35 -C45 tested in accordance with ASTM E18.
3.Use the type of base based on the contract requirements.
4.Position so that the location holes for the breakaway coupling are relative to the load
concentrating member in accordance with the engineer’s requirements. Permanently label all brackets with the bracket number to reflect the hole positioning.
E.Hinge plates:
1.Alloy steel which conforms to AISI 4340, 4130 or an equivalent material.
2.Minimum tensile yield stress of 90,000 PSI.
3.Use hinge plates that have tensile breaking strength ranges as follows and in accordance with
the contract:
a.HI-10 11,450 -13,900 pounds
b.HI-1 16,400 -19,700 pounds
c.HI-2 6,700 -8,100 pounds
F.Nuts, bolts, and cap screws :
1.Conform to ASTM F3125.
2.Within a hardness range of Rockwell C23 to C31 before hot -dip galvanizing per AASHTO
M232/M232M.
1072.3Breakaway I -Beam Sign Foundation Hardware.
A.Anchor bolts:
1.Fabricated from 304 stainless steel for the threaded ferrule portion.
2.Fabricated from 1058 steel rod and coil for the cage portion of the anchor.
B.Nuts, bolts, and cap screws:
1.ASTM A325.
2.Within a hardness range of Rockwell C23 to C31 before hot -dip galvanizing per AASHTO
M232/M 232M.
DELINEATORS SECTION 1073 738 SECTION 1073 — DELINEATORS
1073.1High Performance Flexible Plastic Tubular Markers .
A.Tubular Marker posts:
1.Provide a post exhibiting good workmanship and free of burns, discoloration, contamination,
and other objectionable marks or defects that affect the appearance or serviceability. Provide posts that are:
a.Composed of flexible plastic;
b.Resistant to impact, ultra violet light, ozone, and hydrocarbons; and
c.Remain impact resistant from -30 degrees F to 140 degrees F.
B.Reflector:
1.Use impact resistant prismatic retroreflective sheeting meeting the requirements of the ASTM
D4956.
1073.2Post -Mounted Delineators.
A.Delineators :
1.Sheet aluminum meeting the requirements of ASTM B209 (alloy 6061 -T6 or 5052 -H38) covered
with prismatic retroreflective sheeting meeting the requirements of the ASTM D4956.
2.Use delineator blank 3 1/4 -inches in diameter.
3.Use sheet aluminum cover and reflective sheeting 0.063 inch thick.
B.Posts:
1.Use steel conforming to the provisions of ASTM A36 and galvanize after fabrication in
accordance with the provisions of ASTM A123.
2.Use a “U” channel section, weighing approximately 1.12 pounds per foot, for steel posts for post
mounted delineators and hazard markers.
3.Punch posts with at least three 3/8-inch holes on the centerline, spaced at 4 -inch centers,
beginning 1 1/2-inches from the top before galvanizing.
1073.3Barrier Mounted Delineators.
A.Delineators - Provide high impact barrier mounted delineators meeting the following
requirements:
1.Impact resistant engineering grade thermoplastic material that bends upon impact and
rebounds to original shape.
2.Contains UV -stabilized polymers.
3.Pre-drilled holes for bolt and stud mounting.
4.Minimum 12 square inches of prismatic reflective sheeting meeting the requirements of ASTM
D4956.
5.Mounting adhesive meeting delineator manufacturer’s requirements.
DELINEATORS SECTION 1073 739 B. Retroreflective sheeting - Use sheeting colors as follows:
1.On any divided highway or one -way roadway/ramp,
a.Equip surface facing traffic:
i.Right Side of Roadway - white or silver sheeting
ii. Left side of roadway – yellow sheeting
b.Equip the back surface of delineators with red reflective sheeting.
2.On any undivided highway, equip all delineators with white or silver sheeting on the front and
back.
1073.4Flexible Delineators
A.General
1.Rebounds after impact.
2.Resistant to UV exposure and extreme temperature changes.
3.Minimum d imensions
a.60-inches tall , before installation
b.Outer width minimum 3 ¾ -inches
c.Decal mounting area width 3 -inches
ELECTRICAL CABLE AND SPLICING SECTION 1074 740 SECTION 1074 — ELECTRICAL CABLE AND SPLICING
1074.1Electrical Cable.
A.Electrical cable and wire, NEC, 600 V, UL approved.
1.Stranded or solid, single conductor copper cables (XLP insulated):
a.USE or RHW rated as noted on the contract.
b.THHN or THWN rated as noted on the contract.
2.Bare or insulated stranded copper grounding wire.
3.Triplex aluminum service cable.
4.Type UF cable with ground:
a.Include ground and the number and size of conductors as shown in the contract.
b.Conform to UL 493.
B.Traffic signal cable, solid copper conductor:
1.Conform to IMSA specification number 19 -1.
2.Provide wire size and number of conductors as shown in the contract and as directed by the
engineer.
3.Independent test results to verify specification compliance:
a.Costs of testing are incidental to the supplied cable item.
4.Supply cables on reels with each reel containing 1 continuous length of cable.
5.Use color code as established by IMSA specifications:
a.Use individual tracers that contrast with the base color to allow easy identification.
b.To test for sufficient color contrast, remove the sheath for a length of 6 inches. Remove all
filler material and tapes for the same length. Place all conductors of the same base color, side by side and hide all other conductors.
6.Provide tracer line with a width shall not exceeding 3/20 -inch when measured perpendicular to
the edge of the line.
7.Provide tracer lines on a conductor such that the total width of the tracer line is less than one -
half the total circumference of the conductor.
C.Emergency pre -emption receiver cable.
1.Provide 4 -conductor #18 AWG shielded Opticom cable that meets the pre -emption receiver
manufacturer’s recommended specifications.
D.Home run cable:
1.Provide 2 -conductor #14 AWG aluminum shielded cable.
2.Shielded 2 -conductor controlled capacitance cable enclosed in an aluminized polyester shield
within a polyethylene jacket, rated at 600 volts. ELECTRICAL CABLE AND SPLICING SECTION 1074 741 3. Cable to conform to IMSA 50 -2.
4.The 2 conductors are AWG # 14 stranded copper.
1074.2Cable Splicing.
A.Lighting cable splicing:
1.H-tap, C -tap, and butt splice compression connectors in junction wells or transformer bases:
a.Fabricated from high strength copper alloy.
b.Do not use plated connectors fabricated from metals other than copper.
c.Use bolted type connectors for splicing bare ground conductors.
d.Wrap compression connector in 2 layers of vinyl tape and 2 layers of rubber tape. Tape is
“half -lapped” around connector.
i.Vinyl tape is 3M Company, Inc. (Cat. No. 33); Plymouth rubber (Cat. No. 3117); Permacel
(Cat. No. P29), or an approved equal. ii. Rubber tape is 3M Company, Inc. (Cat. No. 130C, 2228); Plymouth rubber (Cat. No. 2212); Permacel (Cat. No. 253, P280), or an approved equal.
2.Submersible, breakaway connector kits in lighting transformer bases:
a.Unfused, quick disconnect inline connector kit containing:
i.A copper pin that can be crimped to a conductor.
ii. A receptacle having a centrally located, recessed locking socket constructed, filled, and retained by its housing and a disposable assembly pin. iii. A plug housing for retention of the copper pin. iv. A receptacle housing with a disposable protective sleeve.
b.Fused, quick disconnect inline connector kit containing:
i.A pair of spring -loaded copper fuse contacts suitable for gripping the specified cartridge
fuse. ii. A fuse of specified amp rating, rated 600V, 100,000 amps AIC in conformance with UL508.
c.Fused, quick disconnect Y connector kit containing:
i.A pair of spring -loaded copper fuse contacts suitable for gripping the specified cartridge
fuse. Crimp 1 contact on a conductor and after insertion into its proper position within the load side plug housing, securely retain it. Preassemble the other con tact for retention within a Y insert body. ii. A line side Y housing with 2 water seal cable ports. iii. Two terminal lugs, each having a mounting hole. iv. A bolt and a self -locking nut.
v.A Y insert body with preassembled line side fuse contact and a ring tongue terminal.
vi. A load side plug housing permanently marked “load side.” ELECTRICAL CABLE AND SPLICING SECTION 1074 742 vii. A disposable assembly pin. viii. A fuse of specified amp rating, rated 600V, 100,000 amps AIC in conformance with UL508.
d.Unfused, quick disconnect Y connector kit containing:
i.A copper pin that can be crimped to a conductor and suitable for retention in the load side
receptacle housing. ii. A Y insert body with preassembled load side copper socket and ring tongue terminal. iii. A line side Y housing with 2 water seal cable ports. iv. 2 terminal lugs, each having a mounting hole.
v.A bolt and self -locking nut.
vi. A load side receptacle housing.
e.Each kit contains sufficient silicone compound to lubricate metal parts and the housing for
each assembly along with complete installation instructions.
f.All housings made of water resistant synthetic rubber suitable for burial in the ground or
exposure to sunlight.
g.Each housing forms a watertight seal around the cable at the point of disconnection and
between the insert body and enveloping Y housing.
h.All copper pins, sockets, and fuse contacts have a minimum conductivity of 90 percent.
i.The crimped portion is fully annealed while the rest of the device maintains its original state.
j.Use rigid, molded insulating plastic sleeve material of sufficient outside diameter to form a
watertight fit with its related housing.
k.One contact is crimped on a conductor and after insertion into its proper position within the
load side plug housing is capable of being securely retained.
l.Preassemble the other contact for retention within the line side of the connector body.
F.Tape – Use a vinyl electrical tape that has a PVC base with rubber -based pressure sensitive
adhesive, a minimum of 7 mils thick, UL listed, and marked per UL standard 510 as flame retardant and cold resistant. Use a tape compatible with synthetic cable insulations, jackets, and splicing compounds and rated for wire and cable splices up to 600 -volts.
G.For splices in junction well see standard construction details and below:
1.Dual wall heat shrink tubing – Use a heat -shrink tubing that is a medium or heavy wall thickness,
irradiated polyolefin tubing containing an adhesive mastic inner wall. Minimum wall thickness before contraction of 40 mils. When heated, the inner wall me lts and fills all crevices and interstices of the object being covered while the outer wall shrinks to form a waterproof insulation. Provide an overlap of the conductor insulation at least 1 1/2 -inches at each end of the heat -shrink tube, or the open end o f the end cap of heat -shrink tubing after contraction. Provide heat -shrink tubing that conforms to the requirements in ANSI C119.1, for extruded insulated tubing at 600 volts.
2.Soldering iron with Rosin core solder.
ELECTRICAL CABLE AND SPLICING SECTION 1074 743 3. Splicing kit – In-line barrel type design, resin encapsulating compound kit with UL486D rating. Suitable for use in wet or direct buried locations. Use only resin encapsulating compounds acceptable for use at 61 degrees F.
TRAFFIC SIGNAL HEADS SECTION 1075 744 SECTION 1075 — TRAFFIC SIGNAL HEADS
1075.1LED Traffic Signal and Pedestrian Signal Modules.
A.Provide materials and workmanship in conformance with the standards of the ASTM and ANSI
where applicable.
B.Provide all electrical equipment conforming to the standards of NEMA, UL, and IEEE wherever
applicable.
C.Perform all work to the state of the art, best practices as used by the industry, and the
manufacturer’s recommendations, whichever represents the highest standard . A representative of the Department is available to identify state of the art practices and to determine what constitutes the highest standard . The contractor is not entitled to an increase in the contract time or contract price for performing work to the state of the art or the highest standard.
D.Show by field review and by documents required as part of the contract that proposed materials
will perform as required.
1075.2LED Traffic Signal Modules.
A.Provide all LED modules for vehicle traffic signal heads conforming to the current ITE and DE
MUTCD requirements.
B.Provide the circular LED modules in 1 of 6 types, as required by the contract:
1.8-inch red circular LED module.
2.8-inch yellow circular LED module.
3.8-inch green circular LED module.
4.12-inch red circular LED module.
5.12-inch yellow circular LED module.
6.12-inch green circular LED module.
C.Provide the arrow LED modules in 1 of 3 types, as required by the contract:
1.12-inch red arrow LED module.
2.12-inch yellow arrow LED module.
3.12-inch green arrow LED module.
D.The following are the detailed specifications for circular and arrow LED modules. Meet all
specification requirements even if a particular location may not require all of the specified elements.
1.Physical and mechanical requirements:
a.Use a module that fits into a traffic signal housing built to ITE VTCSH standards without
modification to the housing. Use the same mounting hardware used to secure the assembly to the traffic signal section, when replacing an incandescent reflector ass embly module. Do not use “screw -in” type modules in the vehicle traffic signal heads. Install module into signal housing without the use of special tools. TRAFFIC SIGNAL HEADS SECTION 1075 745 b. Provide a self -contained module that requires no on -site assembly for installation into an existing traffic signal housing. Equip the module with 2 conductors for connecting to power, a printed circuit board, power supply, lens and one -piece gasket, and seal the unit after installation and connections so that it is weatherproof. Provide a power supply integral to the module.
c.There are no restrictions to any specific LED technology for the module.
d.Equip the module and removable lens with a prominent and permanent vertical indexing
indicator, i.e., UP arrow, or the word “UP,” or “TOP” for correct indexing and orientation in the signal housing.
e.Affix a certification label to the back of the module that the module is in conformance with all
non-optional requirements of VTCSH -LED or VTCSH -ARROW and the complete ITE standards.
2.Environmental requirements:
a.Provide a module lens capable of withstanding ultraviolet exposure for a minimum period of
60-months without exhibiting significant evidence of deterioration.
3.Optics requirements:
a.Submit the maintained minimum luminous intensity tables for the expanded or extended view
modules with the bid proposal. Show, at a minimum, the points corresponding to the intensity tables provided in VTCSH -LED and VTCSH -ARROW.
b.Equip arrow modules with a solid arrow indication in conformance with VTCSH, Chapter 2,
Section 9.01 having a 3 line / horizontal bar. Spread the LEDs evenly across the illuminated portion of the arrow area.
4.Lens requirements:
a.Provide an abrasion resistant module lens that has a smooth outer surface to reduce the
collection of debris and facilitate cleaning and is made of ultraviolet stabilized polycarbonate or polymeric material.
b.A module lens, tinted or covered by transparent film or materials with similar color and
transmissive characteristics is permitted.
c.The lens may be a replaceable part without the need to replace the complete module. Provide
a lens that delivers an overall appearance that mimics 1 used with incandescent lamps. Do not use lenses that depict a “honeycomb” effect of the display.
5.Electrical requirements:
a.Equip the module to connect directly to the existing electrical wiring system, with a nominal
operating voltage of 120 +/ - 3 VAC RMS. Operate the module using a 60 hertz +/ - 3 hertz AC line power over a voltage range from 80 VAC RMS to 135 VAC RMS. Prev ent flicker of the LED output at frequencies less than 100 hertz over the operating voltage range. Do not allow fluctuations in line voltage over the operating voltage range that affect luminous intensity by more than +/ - 10 percent. Do not allow visible i llumination from the module when the applied voltage is less than 35 VAC RMS.
b.Provide modules that meet the maximum and nominal wattage requirements of “ENERGY
STAR Program Requirements for Traffic Signals.”
Source: Delaware Standard Specifications for Road and Bridge Construction, 2025 Edition. Pages 732–755 of 779.