for Highway Construction Page 688 of 71 5 SECTION 713 – ILLUMINATION AND TRAFFIC CONTROL SIGNAL MATERIALS
713.01 Signal Poles & Structures .
Obtain approval of the submitted shop drawings before fabrication begins for non- standard steel signal poles .
A.Signal Poles . Provide poles that have a 4 inch by 6.5 inch frame and cover located 90 degrees to the right of the mast arm location. Permanently display the signal mast arm shaft (gauge) thickness in inches on each mast arm near the attachment plate (nonstandard poles only). Provide signal poles that meet the requirements for standard or nonstandard mast arm traffic control signal poles , pedestal signal poles, and pedestrian pushbutton poles with materials as specified in 708.19 . and the following additional requirements:
1.Standard mast arm traffic control signal pole requirements:
a.Maximum nominal pole height, including luminaire extension, of 40 feet.
b.Maximum luminaire mast arm length of 15 feet.
c.Maximum signal mast arm length of 55 feet.
d.Use Department approved signal pole designs.
e.Meet additional standard mast arm traffic control signal pole criteria as specified.
f.Provide 4 steel anchor bolts of the manufacturer’s recommended size with each pole. Fit each bolt with 3 nuts and 2 washers.
g.Submit shop drawings and calculations for approval before fabrication.
2.Nonstandard mast arm traffic control signal pole r equirements:
a.Designed in accordance with the current AASHTO LRFD Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals.
b.For signal mast arm length greater than 55 feet or luminaire mast arm length greater than 20 feet, use fatig ue category I design criteria (fatigue design will include natural wind gust, periodic galloping forces, and truck -induced wind gust loads based on a truck speed of 65 mph).
c.Provide 4 steel anchor bolts of the manufacturer’s recommended size with each pole. Fit each bolt with 3 nuts and 2 washers. Include 1 extra anchor bolt per batch for destructive testing.
d.Submit shop drawings and calculations for approval before fabrication.
3.Pedes trian signal pole requirements:
a.A 4-inch rigid galvanized conduit with national pipe tapered (NPT) threads.
b.A square, frangible cast aluminum base that is:
1.Fifteen (15) inches high.
2.Nominal dimension of 14 inches by 14 inches.
3.Four (4) slotted holes for anchor bolts . for Highway Construction Page 689 of 715 (4) Heat treated to industry standards.
c.4 anchor bolts , washers, and nuts supplied by the base manufacturer.
4.Pedestrian pushbutton pole requirements:
a.A 4-inch rigid galvanized conduit with NPT threads.
b.A round cast iron pipe flange that is:
1.Nominal flange thickness of 1 inch.
2.Nominal outside diameter of 9 inches.
3.Bolt circle diameter of 7½ inches.
4.Minimum of four, ⅝ inch diameter holes for anchor bolts .
5.Cold zinc treated.
c.4 anchor bolts , washers, and nuts.
d.Galvanized pipe cap.
B.Base Breakaway Device . Provide a base breakaway device with 4 steel necked couplers and femal e anchors, meeting MASH requirements and certified for loads up to 1,000 pounds. Provide the base breakaway device with an aluminum skirt and associated hardware.
713.02 Cabinet & Service Foundations.
Use Class 40 concrete for signal pole foundations. Use nonstructural concrete for cabinet and electrical service pedestal foundations, an d any necessary concrete pads.
713.03 Electrical Service Pedestals.
Provide underground service pedestal that is the type specified and as follows:
1.120/240- volt single phase.
2.Underground feed.
3.NEMA 3R enclosure.
4.Twelv e (12) gauge galvanized steel construction.
5.White powder -coated interior and exterior.
6.Meet additional underground service pedestal detail criteria as specified.
713.04 LED Luminaires .
A.Illumination Poles . Provide standard and nonstandard poles that meet the requirements of Error! Reference source not found. and:
1.Standard illumination pole:
a.Nominal luminaire moun ting heights of 30, 40, and 50 feet. for Highway Construction Page 690 of 71 5 b. Maximum luminaire mastarm length of 15 feet.
c.Use Department approved luminaire pole designs.
d.Anchor base design to use steel necked breakaway couplers meeting NCHRP 350 requirements, unless the lighting unit (pole, mastarm, and luminaire) exceeds 1,000 pounds.
e.Provide 4 steel anchor bolts or 4 base breakaway devices of the manufacturer’s recommended size with each pole. Fit each bolt with 3 nuts and 2 washers.
f.Meet additional highway lighting on traffic detail criteria as specified.
g.Submit shop drawings and calculations for approval bef ore fabrication.
2.Nonstandard illumination pole:
a.For luminaire mounting heights greater than 50 feet or for luminaire mastarm lengths greater than 15 feet or multiple mastarms.
b.Designed in accordanc e with the current AASHTO LRFD Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals:
1.Design life is 50 years.
2.Design wind speed is 90 mph.
3.Importance factor is 1.00.
4.Fatigue category I design criteria ( natur al wind gust and vortex shedding only).
c.Anchor base design to use base breakaway device meeting NCHRP 350 requirements, unless the lighting unit (pole, mast arm, and luminaire) exceeds 1,00 0 pou nds.
d.Provide steel anchor bolts or base breakaway device of the manufacturer’s recommended size with each pole. When using anchor bolts, fit each bolt with 3 nuts and 2 washers. Include 1 extra an chor bolt per batch for destructive testing.
e.Submit shop drawings and calculations for approval before fabrication.
B.Luminaire Heads. Provide LED luminaires for roadway, underpass, and sign lighting meeting the following requirements:
1.Testing and Compliance by the Manufacturer.
a.Listed and labeled by a Nationally Recognized Testing Laboratory (NRTL) as being suitable for use in wet locations.
b.Restriction of hazardous substances (RoHS) compliant light source and drivers.
c.Compliance with electromagnetic interference (EMI) requirements as defined by the Federal Communications Commission (FCC) regulation in 47 CFR Chapter 1, Subchapter A, Part 15 .
d.Manufactured in an ISO 9001 certified facility or the manufacturer must submit a copy of the manufacturer’s workmanship s tandards and/or quality manual.
e.Manufacturer must have a website with downloadable specification sheets and photometric data, Illuminating Engineering Society (IES) files. Photometric files must be per IES LM -79 specifications and requirements. for Highway Construction Page 691 of 715 2. Fixture C onstruction.
a.Housing and heat sink constructed out of aluminum .
b.All hardware will be corrosion resistant.
c.Finish will withstand at least a 1,000- hour salt spray test per ASTM B117.
d.Fixture will not weigh more than 50 pounds when fully asse mbled.
e.Design will not trap water when installed.
f.When installed, provide access to internal components (e.g., terminal block, driver surge protector) with hand tools.
g.Mounting for roadway fixture. 2 or 4- bolt slip fitter type mounting on nominal 2 inch diameter (23/8 outside diameter) pipe brackets. Slip fitter mount will allow 4 inches of the pole bracket to be inserted in the luminaire mounting assembly and allow for any necessary adjustment .
h.Mounting f or underpass fixture, as specified.
i.Mounting for sign fixture. Capable of top or bottom mounting to sign structure. If provided, angle adjustment should be clearly labeled and able to be locked in place.
j.Complian t with ANS I/IEEE C136.31, Table 2 Roadway Lighting Equipment, Luminaire Vibration for Bridge and Overpass Applications (3G rated).
k.Only passive cooling method can be used to manage thermal output of the LED light engine and power supply.
l.A label mu st be clearly visible on the inside of the luminaire stating the operating voltage, current range, part number, and unique identifier to allow traceability in the event of failure.
m.A completely sealed optical system with an IP rating of 66 or greater.
3.Electrical Requirements.
a.Luminaire will fully operate in an ambient temperature range of negative 40 °F to 104 °F.
b.Power supply(ies) (electronic driver) will be mounted inside the fixture.
c.The power supply(ies) (electronic driver) will operate within the following voltage range: 120 to 277 plus or minus 10 percent VAC (rms) at 50/60 Hz.
d.The power supply(ies) (electronic driver) will have a power factor of 0.90 or greater and a total harmonic distortion of 20 percent or les s at full load.
e.Power supply(ies) (electronic driver) with a rated life of 100,000 hours with a luminaire operated at an average ambient temperature of 77 °F.
f.The power supply(ies) (electronic driver) will have thermal overload protection .
g.The power supply(ies) (electronic driver) will have self -limited short circuit protection.
h.The power supply(ies) (electronic driver) will have an International Protection (IP) 66 rating or greater.
i.A surge protection device that is separate from the power supply (electronic driver) but still contained within the luminaire housing and meeting these requirements: for Highway Construction Page 692 of 715 1. Matched to driver voltage requirements.
2.Fail to an open state.
3.Meets ANSI/IEEE C136.2 requirements (20kV/10kA).
j.A terminal block that will accommodate #6 through #18 AWG wire for terminating pole wiring to the luminaire is required.
k.A NEMA 7 -pin twist lock photoelectric control receptacle with shorting cap.
4.LED Performance Requirements.
a.Correlated c olor temperature (CCT) between 4,000 and 4,500 K.
b.Nominal color rendering index (CRI) of 70 or greater.
c.Intensity and chromaticity must be confirmed by a National Voluntary Laboratory Accreditation Program (NVLAP) photometric laboratory.
d.The average of all possible distributions and driver currents for the luminaire must equal 100 lumens per watt or better.
e.Capable of a minimum lumen output range from 12,000 to 30,000 lumens.
f.Will deliver an average 90 percent of initial lumens after 36,000 hours of operation based on IES TM-21 data at an average ambient temperature of 77 °F.
5.Warranty. The entire luminaire assembly including material, workmanship, finish, photometrics, power supply(ies), and LED modules will have a minimum of a 10- year manufacturer’s warranty from the date of purchase.
713.05 Signal Cabinet.
Supply a complete NEMA TS2 Type 1 signal cabinet along with all necessary components for a functional traffic control signal. Fabricate cabinet out of aluminum . Have exterior be a plain matte metal finish unless some other covering or finish (e.g. powder coating, anti -graffiti coatings, vinyl covers) is specified by the Engineer.
713.06 Signal Controller.
Supply a controller with the following:
1.Capable of up to 16 programmable phases
2.NEMA TS2 Type 1 Connector Port
3.USB Ports for d evice upgrade ability and data upload/download
4.Ethernet Port
5.Compliant with the National Transportation Communications for ITS (Intelligent Transportation Systems) Protocol (NTCIP) 1201 and 1202 standards for interoperability with other traffic control system components
6.Compliant with ITE’s ATC 5201v06A standard for Highway Construction Page 693 of 715 713.07 Signal Heads . Subm it a list of equipment and materials proposed for installation. For each item listed, include manufacturer’s name, size, and catal og number. Optically programmed signal heads allow the visibility zone of the indication to be determined optically and require no hoods or louvers. The projected indication may be selectively visible or veiled anywhere within 15 degrees of the optical axis. Indication cannot result from external illumination or from one lamp module illuminating another.
A.Housing. Supply one- way, adjustable type with the number sections as specified, 12 inch, empty, UV stabilized polycarbonate, top and bottom reinforcement plates, and matte black in color. Locate Ter minal strips, if possible, in the middle back of housing.
B.Visors. Supply signal visors that are one piece, matte black in color, polycarbonate, and are tunnel styled. 12 inches in diameter for 12 -inch modules. Mount on the provided signal head without field modifications.
C.LED Modules.
1.Provide LED signal modules with quick disconnect leads, smooth , polycarbonate lens surface, 12 inch diameter , 120 VAC, non- pixelat ed or has the "incandescent -look", and rated for long service life.
2.Provide LED modules that meet the Institute of Transportation Engineers (ITE) vehicle traffic control signal head (VTCSH) requirements
3.Provide tinted red & yellow bal l modules. Provide clear green ball modules.
4.Provide tint ed or clear red & yellow arrow modules . Provide clear green arrow modules.
D.Back Plates. Supply back -plates that are 5 inches wide conforming to signal housing outline, matte black in color , corresponds to the signal h ousing size, and are UV stabilized polycarbonate. If reflectorized, have a factory -applied 2" -wide yellow ASTM Type XI retroreflective tape applied to the surrounding edge. Mount on the provided signal housing without field modifications.
E.Bracket s. Supply signal head brackets for mast arm mounting, side- of-post mounting or top- of-post mounting.
F.Signal Head Covers. Provide signal head covers that meet the following requirements:
1.Opaque, light in color (e.g., yellow, tan):
a.With a transparent center section or port for partial viewing of individual lens indications for circuit testing . for Highway Construction Page 694 of 715 b. Full opaque covers for blanking out or restricting the visibility of an unwanted signal display.
2.At least 50 percent contrast to the signal housing and signal back plate.
3.Sized to cover the appropriate signal head faces.
4.Weather and UV light resistant material.
5.Use of signal covers and attachment methods like cardboard, trash bags, burlap sacks, plywood, electrical tape, and duct tape is not allowed.
6.Method to securely attach to prevent accidental removal or being dislodged by winds up to 90 mph.
713.08 Pedestrian System.
A.Housing. Housing must meet the following requirements:
1.Meet ITE Specifications
2.18 inches by 18 inches in size or able to fit a LED module of 16 inches high and 18 inches wide in size.
3.Matte B lack or Dark Green Color
4.UV stabilized polycarbonate or powder -coated aluminum
5.“Egg Crate” like screen with flat black color to protect LED Module
6.Can come as a unit (housing & LED module) or as separate pieces.
7.Stainless -Steel Hardware (Where appl icable)
a.Terminal block is located inside the pedestrian signal head housing.
b.Lamp module are wired to terminal connectors and fastened to the terminal block.
B.Modules . Modules must meet the following requirements:
1.Meets ITE pedestrian t raffic control signal indicator (PTCSI) requirements & current edition of the Manual on Uniform Traffic Control Devices (MUTCD)
2.Nominal 60Hz AC Voltage: 120V or the stated range of 80V to 135V
3.One-way LED Modules
4.Size: 16 inches high by 18 inches wide or size appropriate for housing
5.“Countdown” Style with filled hand/man symbols
6.Non-Pixelated or “Incandescent” look
C.Standard Push Button. Pedestrian push button must meet the following requirements:
1.Black or Yellow in Color
2.Round Button S tyle
3.Arrow button optional (and is project specific)
4.Follow Standard Drawing for Placement for Highway Construction Page 695 of 715 D. Push Button Back Plate . Pedestrian pus h button back plate must meet the following requirements:
1.Able to hold a round push button
2.Four screw holes to attach push button
3.Black or yellow in color or match push button color finish specified
4.Back Plate made of aluminum
5.One piece that can hold button and applicable 9”x15” R10- 3e MUTCD compliant sign with the appropriate travel arrow direction and count down instructions.
6.Pair Back Plate and Push Button of the same Manufacturer.
E.Cabinet Interface. Provide necessary power supply and I/O controller for traffic cabinet.
713.09 Detection.
A.Cabinet Modification. Any controller cabinet modification or additional cabinet equipment required for the functionality of specific models of detection systems must be pr ovided by the equipment supplier and the cost considered incidental to the detection system pay item.
B.Induction Loop. Provide induction loops that meet the following requirements:
1.Cables meeting Section 713.11.
C.Video. Provide video detection that meet the following requirements:
1.Power and video cabling to camera(s), cable(s) to be UL listed and labeled.
2.Color camera(s) with zoom lenses, enclosure(s) and mounting bracket(s).
3.Programmable video image processor(s) and associated hardwar e capable of providing presence and advance detection for all approaches. U se video image processor(s) capable of interfacing with NEMA TS -1 and TS -2 detector slots or provide BIU interface to NEMA TS -2 Type 1 cabinet. Detector slots to be rack mount, shel f mount or wall mount within the signal cabinet.
4.An interfac e from video processor(s) to signal controller I/O.
5.A nine- inch monitor or combination of software and hardware to allow for viewing of camera image and detection zon e configuration on a laptop.
6.Units must allow remote access for traffic monitoring and sensor management. System must be able to connect direc tly into a Department’s ethernet switch in the cabinet (if applicable).
D.Radar. Provide radar detection that meet the following requirements:
1.Power and data cabling to antennas, cable(s) to be UL listed and labeled. for Highway Construction Page 696 of 715 2. Antennas, mounting brackets and all necessary components.
3.Programmable radar image processor(s) and associated hardware capable of providing presence and advance detection for all approaches. Use radar image processor( s) capable of interfacing with NEMA TS -1 and TS -2 detector slots or provide BIU interface to NEMA TS -2 Type 1 cabinet. Detector slots to be rack mount, shelf mount or wall mount within the s ignal cabinet.
4.An interface from radar processor to signal controller I/O.
5.A nine- inch monitor or a combination of software and hardware to allow for viewing of intersection graphic and detection zone configuration on a laptop.
6.Units must allow remote access for traffic monitoring and sensor management. System must be able to connect direc tly into a Department’s ethernet switch in the cabinet (if applicable).
E.Hybrid. Provide hybrid detection that meet the following requi rements:
1.Power and data cabling to the radar/video unit(s), cable(s) to be UL listed and labeled.
2.Color camera(s) with zoom lenses and integrated radar sensor, enclosure(s) and mounting bracket(s).
3.Programmable radar/video image processor(s) and associated hardware capable of providing presence and advance detection for all approaches. Use image processor(s) capable of interfacing with NEMA TS -1 and TS -2 detector slots or provide BIU interface to NEMA TS2 Type 1 cabinet. Detector slots to be rack mount, shelf mount or wall mount within the signal cabinet.
4.An interface from radar/video processor to signal controller I/O.
5.A nine- inch monitor or combination of software and hardware to allow for viewing of camera image and detection zone configuration on a laptop.
6.Units must allow remote access for traffic monitoring and sensor management. System must be able to connect direc tly into a Department’s ethernet switch in the cabinet (if applicable).
F.Thermal. Provide therm al detecti on that meet the following requirements:
1.Power and data cabling to sensor unit(s), cable(s) to be UL listed and labeled.
2.Thermal sensor(s) and mounting brackets.
3.Programmable thermal image processor(s) and associated hardware capable of providing presence and advance detection for all approaches. Use thermal image processor(s) capable of interfacing with NEMA TS -1 and TS -2 detector slots or provide BIU interface to NEMA TS -2 Type 1 cabinet. Detector slots to be rack mount, shelf mount or wall mount within t he signal cabinet.
4.An interface from thermal sensor processor to signal controller I/O.
5.A nine- inch monitor or a combination of software and hardware to allow for viewing of intersection graphic and detection zone configuration on a laptop.
6.Units must allow remote access for traffic monitoring and sensor management. System must be able to connect direc tly into a Department’s ethernet switch in the cabinet (if applicable). for Highway Construction Page 697 of 715 713.10 Preemption. Install system including any miscellaneous hardware necessary for full operable. The preempt system must cause the signal controller to advance to a preferential sequence and hold the authorized vehicle right of way as shown on the plans and specified by t he Manual on Unifor m Traffic Control Devices as adopted by the State. Install the emitters in a location as recommended by the manufacturer for optimal performance. Provide material as specified below for equipment:
1.Include one phase selector for the traffic control signal cabinet and one preempt detector for each intersection leg,
2.Miscellaneous Items, to include #14 AWG 3C signal cable (IMSA No. 19 -1-1984) per preempt detection system manufacturer’s specification and other items, hardware, and fittings necessary for a complete installation.
3.LED Indicator Lighting for each approach
4.Installation cable and GPS Radio Unit, Mast Arm m ounted.
713.11 Additional Electrical Items.
A.Rigid Steel Conduit Galvanize or sherardize conduit to protect against corrosion.
B.Plastic Conduit . Provide Schedule 40 PVC or HDPE smoothwall suitable for direct burial as a minimum for plastic conduit . The conduit can be rigid or coiled and have a solid wall. The manufacturer will certify the conduit meets the minimum requirements of the applicable UL, NEMA, or ASTM specifications for direct burial electrical conduit.
C.Concrete Junction Box es. Construct bottomless concrete junction box es of vibrated concrete. Provide a ⅜ inch minimum thickness steel diamond plate lid, with a locking device to hold the lid securely in place and painted with corrosion preventive type paint , gray in color. Weld a ⅜ inch by 1 inch plated bolt to the bottom of the steel lid. Place a 36- inch section of #10 AW G Green THWN wire with ring connector on the bolt and attached with a ⅜ inch nut. Size junction box es as follows:
1.Size A has inside dimensions of 9 inches by 5 inches by 10 inches deep and a nominal wall thickness of 2.5 inches.
2.Size B has inside dimensions 13 inches by 9 inches by 10 inches deep and a nominal wall thickness of 2 inches.
3.Size C has inside dimensio ns of 18 inches by 13 inches by 15 inches de ep and a nominal wall thickness of 2 inches.
4.Size D has inside dimensions of 36 inches by 32 inches by 28 inches deep with a nominal wall thickness of 3 inches and will be reinforced by a ⅜ inch round reinforcing bar hoop 2 inches below the top of the box and No. 10 welded wire mesh continuously within the walls. Provide A, B, and C junction box es with metal tops and reinforced walls with continuously welded wire. Submit detailed shop drawings for approval of a Size D junction box. for Highway Construction Page 698 of 715 D. Composite Junction Boxes . Provide composite junction boxes meeting the following requirements:
1.Polymer concrete, reinfor ced by a fiberglass we ave.
2.Constructed bottomless.
3.Nondeliberate traffic junction box es and covers tested and certified to the provisions of the ANSI/SCTE 77 2010, by a nationally recognized third party independent test firm (e.g., UL, Intertek (ETL)).
4.1-year minimum manufacturer’s warranty.
5.Nondeliberate traffic junction box covers rated for a Tier 22 application. Emboss Ti er 22 rating in the top surface of the cover.
6.Secure cover to junction box using stainless st eel hex head with self -cleaning threads (e.g., coil bolt or 3/8 -7 lag thread).
7.Type PGD junction box is to have a 2- piece box cover.
8.Embed a “General Purpose” Electronic Marker System (EMS) marker in the junction box cover.
9.Mold logos in the junction box cover.
10.A minimum applied force of 2,000- pound rating for the pull slots.
11.Color junction box es and covers concrete gray.
12.Size junction boxes as follows:
a.Size PGB has nominal inside dimensions of 11 ½ inches by 21¼ inches by 16 inches deep.
b.Size PGC has nominal inside dimensions of 15½ inches by 28½ inches by 16 inches deep.
c.Size PGD has nominal inside dimensions of 20¾ inches by 29¾ inches by 22 inches deep.
E.Electrical Conductors and Cables. Provide electrical conductors and cables , UL listed and labeled, AWG or equivalent, stranded copper, meeting the requirements of the Insulated Power Cable Engineers Association (IPSEA) Publication S -61-402 or current NEMA Publication WC5 Section 7.4 Type B, and the following:
1.Multiple Conductor Signal Cable.
a.The number of conductors per cable as specified.
b.Conductors are 600- volt, No.14 uncoated annealed stranded copper wire with PE insulation.
c.Cable labeled as meeting the requirements of International Municipal Signal Association Specifications No. 19 -1 for polyvinyl chloride sheath or No. 20- 1 for PE sheath.
2.Multiple Conductor Loop Cable.
a.No. 18 AWG stranded 4 conductor waterproof instrumentation cable.
b.Provide color coding of the 4 conductors in accordance with the published IP CEA or NEMA standards. for Highway Construction Page 699 of 715 c. High density PE jacket with a water blocking filler between conductors, suitable f or direct burial, equal to Canoga Controls 20002, Clifford of Vermont 4C18B7NS -F, Independent PDS -078506, or Atlas Wire and Cable Corp. A9 53.
3.Multiple Conductor Loop Lead- in Cable.
a.No. 18 AWG shielded stranded 4 conductor wire with a PE jacket.
b.Provide color coding of the 4 conductors that is in accordance with the published IPCEA - NEMA standards.
c.High-density PE jacket with a water blocking filler between conductors, is suitable for direct burial, equal to Clifford of Vermont 4C18 B7 OS -F or Canoga Controls 30003. for Highway Construction Page 700 of 71 5 SECTION 714 – SECONDARY CEMENTITIOUS MATERIALS
714.01 General Requirements.
Protect secondary cementitious materi als (SCM) from exposure to moisture until used. Tightly seal and adequately separate containers used for transport or storage from other material containers to prevent seepage or mixing of materials. Provide equipment used for discharge with positive shut -off controls at the point of discharge. SCM used as a partial substitute for portland cement may cause a delay in strength gain and may require more curing time before the c oncrete is exposed to loadings. The Engineer may accept SCM for use on the basis of the manufacturer’s certification as specified in 106.04 and 106.05. Submit the manufacturer's certification indicating material class and compliance to material specifications.
714.02 Fly Ash .
Provide fly ash that meets AASHTO M 295 Class F, except loss of ignition (LOI) must not exceed 3.0 percent. Calcium c ontent (CaO) of fly ash must not exceed 18%. Alkali content (Na 2Oe) of the concrete must not exceed 3.0%
714.03 Ground Granulated Blast Furnace Slag.
Provide ground granulated blast furnace slag that meets AASHTO M 302 Grade 100.
714.04 Silica Fume .
Provide silica fume that meets AASHTO M 307 with a maximum available alkali of 1.5 percent and 10 percent or less retained when wet- sieved on the No. 325 screen.
714.05 Blended Secondary Cementitious Materials .
Provide blended secondary cementitious materials confor ming to ASTM C1697. Each cementitious material must be sampled before blending.
714.06 Natural Pozzolans.
Provide natural pozzolans that meet AASHTO M 295 Class N.
Source: Idaho Standard Specifications for Highway Construction, 2023 Edition. Pages 724–735 of 768.