SECTION 570: PIPE CULVERTS
570.1 Description
This Work consists of supplying , constructing, and reconstruct ing pipe Culverts. Section 12 referred to below is from the AASHTO’s LRFD Bridge Design Sp ecification. Sections 26, 27 and 30 referred to below are from the AASHTO’s LRFD Bridge C onstruction Specification.
570.2 Materials
The Contractor shall provide Material in accordance with Table 570.2:1, “Culvert Material Applications.” Table 570.2:1 Culvert Material Applications Category/Material Application a Sub- drainage Cross Drains Turnouts Storm Drainsb Siphonsc Metal (steel or aluminum or steel reinforced polyethylene) xCMP X X X xSpiral Rib Pipe X X X xDouble Wall X xSmooth FLO X xConcrete Lined X Concrete Reinforced X X X X xPressure X xCylinder X Precast CBC h X X X Polypropylene Corrugatedj X X X X Triple wallk X X X X Thermoplastic, high density polyethylene (HDPE) Single Wall Pipe d X Corrugated X X X X xProfilee X X X X xSolid X X X Thermoplastic, PVC xCorrugated (in/out) X X X xProfilef X X X X xSolid Xg X Pressure X Miscellaneous Ductile Iron X xSRPEv X X X X Culvert Material Applications Category/Material Applicationa Sub- drainage Cross Drains Turnouts Storm Drainsb Siphonsc X denotes an acceptable application. A “blank cell” denotes an unacceptable application. aPrimary Applications (Could be used in other applications as ap proved by the Project Manager). bJoints must be watertight in accordance with Section 570.2.2, “ Joints,” and have a maximum tested Manning’s coeffi cient roughness of 0.013 or less . cMust meet the pressure tight requirements of Section 570.2.2, “ Joints.” eType S, Type D, or ASTM F 894. fASTM F 794, F949, and ASTM F 1803. gSchedule 40. hFor Precast box, refer to Specia l Provision 511 – F, if applica ble. jASTM F2736 and MP-21-11. kASTM F2764. v Steel Reinforced Polyethylene Pipe. The Contractor shall design, manufacture, and install Culvert Materials in accordance with Table 570.2:2, “Culvert Mate rials Specifications, AASHTO L RFD (AWWA),” and Table 570.2:3, “Culvert Materials Specifications, ASTM (ACI).” Table 570.2:2 Culvert Materials Specifications, AASHTO (ANSI/AWWA) Category/parameters Material Pipe Designa Installationa Corrugated metal pipe and pipe arch Galvanized M 218 M 36 Section 12 Section 26 Aluminized, Type 2 M 274 M 36 Section 12 Section 26 Aluminum M 196 M 196 Section 12 Section 26 Fiber-bonded M 190, A M 190, A Section 12 Section 26 Polymeric M 246 M 245 Section 12 Section 26 Coatings pavements and lining Asphalt coating — M 190, A — — Concrete lined — M 36 — — Paved invert — — M 190, B&C — Low n value — M 190, A — — Reinforced concrete Round — M 170 Section 12 Section 27 Arch — M 206 Section 12 Section 27 Elliptically shaped — M 207 Section 12 Section 27 Reinforced D-load — M 242 Section 12 Section 27 Cylinder — C 303 AWWA M9 — Culvert Materials Specifications, AASHTO (ANSI/AWWA) Category/parameters Material Pipe Designa Installationa Pressure — C 302 AWWA M9 — Polypropylene Pipe 12 inch-- 30 inch MP-21 MP-21 Section 12 Section 30 Pipe 36 inch – 60 inch MP-21 MP-21 Section 12 Section 30 Thermoplastic, HDPE corrugated Pipe 3 inch–10 inch — M 252 — — Pipe 12 inch–60 inch — M 294 Section 12 Section 30 Thermoplastic, HDPE profile Profile 18 inch–120 inch — — Section 12 Section 30 Thermoplastic, HDPE solid smooth Pipe 12 inch–60 inch — — Section 12 Section 30 Thermoplastic, PVC profile Profile 4 inch–48 inch — M 304 Section 12 Section 30 Thermoplastic, PVC solid smooth Pipe 4 inch–15 inch — M 278 Section 12 Section 30 Pipe 18 inch–27 inch — — Section 12 Section 30 Thermoplastic, PVC pressure Pipe 14 inch–36 inch — C 905 — C 900 & M-23 Miscellaneous Ductile Iron Pipe — ANSI/ AWWA C150/ A21.50 ANSI/ AWWA C150/ A21.50 ANSI/ AWWA C600 Steel reinforced Polyethylene Pipe 24 inch – 96 inch D3350 aInstall in accordance with Section 206, “Excavation and Backfil l for Culverts and Minor Structures,” Section 663, “Utility Items,” for Pressure P ipe. bMust be approved by the Project Manager. dNMDOT approved thru 96 inch. If flowable fill is used as backfill, Section 30 deflection tes ting may be performed immediately after the flowable fill has cured in accordance wit h Section 516, “Flowable Fill.” Table 570.2:3 Culvert Materials Specifications, ASTM (ACI) Category/parameter Material Pipe Design Installationa Culvert Materials Specifications, ASTM (ACI) Category/parameter Material Pipe Design Installationa Corrugated metal pipe and pipe arch Galvanized A 929 A 760 A 796 A 798 Aluminized, Type 2 A 929 A 760 A 796 A 798 Aluminum B 744 B 745 B 790 A 798 Fiber-bonded A 885 A 760 A 796 A 798 Polymeric A 742 A 762 A 796 A 798 Coatings, pavement, and lining Asphalt coating — A 849 — — Concrete lined — A 849 — — Paved invert — A 849 — — Low n value — A 849 — — Reinforced concrete Round — C76 — C 1479 Arch — C506 — — Elliptically shaped — C507 — — Reinforced D-load — C655 — C 1479 Cylinder — — — — Pressure — C 361 C 361 — Non-reinforced concrete c <36 inch — C 14 C 1479 Cast-in-place Concreted — ACI 346 — — Polypropylene Pipe 12 inch – 30 inch F 2736 F 2736 D 2321 Pipe 36 inch – 60 inch F 2881 F 2881 D 2321 Pipe 30 inch – 60 inch F 2764 F 2764 D 2321 Thermoplastic, HDPE corrugated Pipe 3 inch–10 inch D 3350, 335420C — — D 2321 Pipe 12 inch–60 inch D 3350, 324420C — — D 2321 Thermoplastic, HDPE profile Profile 18 inch–120 inch D 3350, 334433C F 894b — D 2321 Thermoplastic, HDPE solid smooth Pipe 12 inch–60 inch D 3350, 335434C F 714 — D 2321 Thermoplastic, PVC profile Profile 4 inch–48 inch D 1784, 12364C F 794, F949, F 1803 — D 2321 Thermoplastic, PVC solid smooth Culvert Materials Specifications, ASTM (ACI) Category/parameter Material Pipe Design Installationa Pipe 4 inch–15 inch D 1784, 12454 D 3034, F 679 — D 2321 Pipe 18 inch–27 inch D 1784, 12454 F 679 — D 2321 Thermoplastic, PVC pressure Pipe 14 inch–36 inch D 2241 — D 3139 D 2321 Miscellaneous Ductile Iron Pipe — A716 A 746 — Steel reinforced Polyethylene Pipe 24 inch – 96 inch D3350 F2562 --- D 2321 aInstall in accordance with Section 206, “Excavation and Backfil l for Culverts and Minor Structures,” Section 663, “Utility Items,” for Pressure P ipe. bUse R. S. C. = 100 and 160 only. cMust be approved by the Project Manager.
570.2.1 Pipe
570.2.1 1 Metal Pipe
The Contractor shall provide helical corrugated pipe that have re-rolled ends with at least two (2) annular corrugations. If using stab joints, only one ( 1) end may have a factory attached coupling as appropriate for the end. The following ends of pipe do not have to be re-rolled: 1. Connected to an existing pipe with helical corrugations; 2. Connecting to an end section; or 3. To be embedded in concrete. The Department will allow direct connection of end sections ut ilizing a dimple band for cut ends on existing pipe, and straps or rods on new installations. The Contractor shall use a half smooth, half corrugated sleeve or a concrete collar for extensions of concrete pipe to metal pipe. If using smooth interior lined steel Culvert pipe (double wall ), the Contractor shall provide lock seams of the smooth interior liner and the corrugated shel l that are continuous from end to end of each length of pipe section. The Contractor shall en sure the exterior gauge is not less than the specified gauge in the Contract for unlined corru gated steel Culvert pipe. The interior metal lines shall be at least 0.040 inch. The Contractor shall use pipe with gasketed lock seams and re- rolled ends for watertight installations. Joints must mee t the requirements per Section 5 70.2.2.1.2, “Watertight Joints.”
570.2.1 2 Reinforced Concrete Pipe
The Contractor shall provide reinforced concrete pipe (RCP) wi th a bell and spigot design, a tongue and groove design or a single offset joint des ign. All RCP shall be fabricated Section 570: Pipe Culverts Page 591 in a plant that is certified by the American Concrete Pipe Asso ciation (ACPA). The Contractor may use lift holes or lifting anchors to handle and place RCP. The Contractor shall not use more than two (2) lift holes in the wa ll of each piece of pipe. The Contractor shall place lift at the top of the pipe in line with the centerline of the pipe and along the minor axis of the reinforc ement. When using a single lift hole, the Contractor shall place it at the balance point. When using two (2) lift holes, the Contr actor shall place them equidistant from the balance point. The lift holes shall not interfere wit h the load carrying capacity of the pipe, shall be neatly made, shall be straight, and may be eithe r drilled or cast. After the Contractor has placed the pipe and before beginning backfill operations, the Contractor shall fill the lift holes with: 1. Non-shrink grout, in accordanc e with Section 521, “Non-Shrin k Grout;” 2. Joint mortar, in accordance with Section 570.2.2.2.2, “RCP J oint Material,” to which non-shrink admixture in accordance with Section 521, “Non-Shrin k Grout” has been added; or 3. Non-shrink grout, in accordanc e with Section 521, “Non-Shrin k Grout.”
570.2.1 3 Plastic Pipe
When required for thermoplastic pipe, the Contractor shall pro vide end sections located out of the clear zone that are either metal or HDPE with a mini mum two percent (2%) carbon black in accordance with ASTM D 1248.
570.2.1 4 Pipe Certification and Identification Requirements
The Contractor shall provide certified test results showing th at the Material supplied meets Specifications. The Contractor shall provide record heat numbers and supply ch emical analysis for metal pipe. The Department will inspect the RCP factory out of state RCP Suppliers shall arrange for witnessed plant tests at no additional cost to the Departme nt. The Contractor shall provide certification of cell classifi cation and pipe stiffness for the rmoplastic pipe in accordance with the Material selected using t he fill height table in the Standa rd Plans. The Contractor shall label each pipe before shipment. All the rmoplastic pipe sections will clearly display the “Date Code Number.” RCP will display NMDOT s t a m p . M e t a l p i p e w i l l display a stencil or stamp displaying the manufacturer’s name, date and country of manufacture, thickness, coating, heat number, and applicable AS TM or AASHTO Specification. All labels will correspond to test reports with a permanent print, stamp, or stencil. The Contractor shall provide test reports and certification fo r in plant joint tests required by Section 570.2.2.1.2, “Watertight Joints.”
570.2.1 5 Selecting Pipe
The Contractor may select any approved type of pipe, unless ot herwise specified. If the Plans specify storm drain Culvert pipes, the Contractor may select an approved type with a maximum tested Manning’s coefficient of roughness o f 0.013. If the Plans specify siphon Culvert pipes, the Contractor may select an approved pressure pipe. The Contractor shall select a type of pipe based on the corros ion resistance number in accordance with Section 570.2.3.1, “Corrosion Resistance Number ,” except when using siphon Culvert pipe. If the Plans specify a nominal diameter for pipe arch, the Con tractor may supply arched or elliptical pipe equal to the nominal round pipe.
570.2.2 Joints
The Contractor shall select the appropriate joint in accordanc e with Table 570.2.2:1, “Joint Selection.” Table 570.2.2:1 Joint Selection Type of pipe Structure Soil- tight Water- tight Pressure Tight Restrained Culverts under turnouts (not under Road) X Cross drain Culverts X Elbowed drop Culverts X Xa, c Storm drains Xb Rundowns or downdrainsa X Xa, c Pond outlet pipes and risers X Irrigation pipe (non-pressure) Xb Irrigation siphons and sag pipes (pressure) X aUse where pipe slopes are steep (>10%) and or velocities are hi gh. bTongue and groove joints for Elliptical and Arched Concrete, a nd Steel Arch pipe are not considered watertight w ithout special joint design cons iderations (for RCP refer to Section 570.2.2.2.2, “RCP Joint Material;” for CMP ref er to Section 570.2.2.2.1, “CMP Joint Material”) or as approved by th e Project Manager. cRCP and CMP only.
570.2.2 1 Joint Types
570.2.2 1.1 Soil-tight Joints
A soil-tight joint does not allow migration of soil into the p ipe.
570.2.2 1.2 Watertight Joints
A gasketed joint restricts infiltration/exfiltration and exhib its no visibl e leakage when subject to 10.8 psi over the crown for ten (10) min under testi ng conditions as outlined in the appropriate product ASTM Specification. When plant tested, the appropriate product joint shall meet th e requirements of ASTM D 3212 (thermoplastic or steel reinforced polyethylene ), ASTM C 443/C 497 (concrete) or ASTM-A760 (metal).
570.2.2 1.3 Pressure-tight Joints
The Contractor shall use pressure pipe in accordance with Sect ion 663, “Utility Items,” and the associated sections of the New Mexico Standard Specifications for Public Works Construction (NMSSPWC ). The Contractor shall provide pipe with a pressure rating eq ual to or greater than the static head shown on the drawings. The Con tractor shall select Materials in accordance with Table 570.2.2.1.3:1 “Pressure-Tight Joint Ma terials.” The Contractor shall test pressure-tight installations used in siphons and sag pipes shall show no leakage in excess of t he allowable line leakage require ment when filled with water to the highest operating elevation and allowed to stand full for 2 4 h. The minimum coupling requirement will be in accordance with th e testing requirements of AASHTO’s LRFD Bridge Construction Specifications , Section 26 & 30, for standard joints in non-erodible soils. Table 570.2.2.1.3:1 Pressure-Tight Joint Materials Material NMSSPWC Section Polyvinyl chloride 121 (AWWA C 905) Reinforced concrete 124 (ASTM C 361M) Concrete cylinder 128 (AWWA C 303) Ductile iron 129 (ANSI/AWWA C150/A21.50) Ductile and cast iron fittings 130 (ANSI/AWWA C153/A21.53 & ANSI/AWWA C111/A21.11) Solid wall HDPE ASTM F 714
570.2.2 1.4 Restrained joint
A restrained joint resists a tensile force in accordance with AASHTO’s LRFD Bridge Construction Specifications, Section 26 or as approved by the Project Manager.
570.2.2 2 Joint Materials
570.2.2 2.1 CMP Joint Material
If the Contract specifies soil-tight joints, factory-attached metal or plastic stab joints with modified gaskets, hugger-type bands without gaskets or fully co rrugated bands without gaskets can be supplied. If the Contract specifies watertight joints, the requirements of Section 570.2.2.1.2, "Watertight Joints" must be met, which shall include the follow ing: Factory-attached metal or plastic stab joints with modified gaskets, or hugger-type bands with lubed O-ring gaskets, is watertight when backfilled with flowable fill. With round pipe a minimum of 5C fully corrugated bands (13 inch wide) with a lubed, 12 inch wide, closed cell ne oprene flat gasket is watertight without flowable fill. With pipe arch a minimum of 5C fully co rrugated bands (13 inch wide) using rods and lugs with a lubed, 12 inch wide, closed cell neo prene flat gasket is watertight without flowable fill. If the Contract specifies restrained joints all pipe affected will use rods and lugs.
570.2.2 2.2 RCP Joint Material
Section 570: Pipe Culverts Page 594 The Contractor shall provide flexible watertight sealing gaske ts in accordance with ASTM C 443, ASTM C 877, or AASHTO M 198 for watertight applicat ions. The Contractor shall provide external sealing bands in accorda nce with ASTM C 877 for arch and elliptical pipes with tongue and groove joints in wate rtight applications. The Contractor shall provide closed-cell neoprene gaskets in a ccordance with ASTM D 1056 and AASHTO M 198, Type B when required on the Contr act. The Contractor shall provide butyl rubber mastic sealant in ac cordance with AASHTO M 198 for soil-tight applications for round, arch, and e lliptical concrete pipe. The Contractor shall grout watertight and pressure-tight joint s as directed by the Project Manager.
570.2.2 2.3 Thermoplastic and Steel Reinforced Polyethylene Joi nt Material
The Contractor shall provide couplings that snap on, and engag e an equal number of corrugations on either side of the pipe joint. The Department w ill not accept wrap-around bands. The Contractor shall provide bell and spigot joints in accorda nce with ASTM D 3212 and ASTM F 477. The Contractor shall provide c oncrete Structure connections wi th a water stop or boot.
570.2.2 2.4 Thermoplastic (Polypropylene) Joint Material
The Contractor shall provide bell and spigot joints in accorda nce with ASTM D3212 and ASTM F477. Spigot shall have two (2) gaskets installed by the pipe manufacturer and covered with a removable, protective wrap to ensure the gasket is free from debris. The bell shall be reinforced with a polymer composite band installed by the manufacturer.
570.2.3 Durability
570.2.3 1 Corrosion Resistance Number
Unless specified on the Contract, the Contractor shall provide pipe Culverts with a minimum corrosion resistance number of CR1. However, the Contr actor shall provide pipe Culverts with a minimum corrosion resistance number of CR3 for storm drains, rundowns, non- pressure irrigation pipe, and elbowed drop Culverts. If the Co ntract specifies a corrosion resistance number, the Contractor shall use Table 570.2.3.1:1, “Pipe Culvert Durability,” to choose a pipe type from the column below the corrosion resistan ce number. The Contractor shall not use Table 570.2.3.1:1, “Pipe Culvert Durability,” for siphon Culvert pipe. Table 570.2.3.1:1 Pipe Culvert Durability Type of pipe Corrosion resistance number CR1 CR2 CR3 CR4 CR5 CR6 CR7 Galvanized steel Yes No No No No No No Aluminized steel, Type 2a Yes Yes Yes Yes No No No Aluminum alloy Yes Yes Yes Yes Yes No No Pipe Culvert Durability Type of pipe Corrosion resistance number CR1 CR2 CR3 CR4 CR5 CR6 CR7 RCP, Type II cementb Yes Yes Yes Yes Yes Yes No Polymeric coated steel Yes Yes Yes Yes Yes Yes No Aramid fiber bonded steel Yes Yes Yes Yes Yes Yes Yes Thermoplasticc Yes Yes Yes Yes Yes Yes Yes Steel reinforced and non-reinforced polyethylene pipe Yes Yes Yes Yes Yes Yes Yes RCP Type V cementb Yes Yes Yes Yes Yes Yes Yes aThe table is based on a minimal structural gauge thickness. Th e Contractor may use a heavier gauge to increase the corrosion resistance number as approved by the Project Manager. bCement type based on Section 510, “Portland Cement Concrete.” If pH 5.0, use a rapid chloride permeability 1,200 coulombs. cCell Class corresponding to highe st values on Fill Height Table must be used for CR4 – 7.
570.2.3 2 Dissimilar Metal Pipe Joints
The Contractor shall use rubber gaskets on joints between diss imilar metal pipes.
570.2.3 3 Coating Aluminum and Aluminized Steel Pipe, Type 2
The Contractor shall coat aluminum and aluminized steel pipe, Type 2 for the entire length of pipe in contact with fresh concrete (except for grout ed pipe or flowable filled pipe) to a distance of 12 inch beyond the back face of the concrete in a ccordance with the Contract. The Contractor shall provide a zinc-rich paint coating in accor dance with AASHTO M 36.
570.3 Construction Requirements
570.3.1 General
The Contractor shall install pipe in accordance with Section 2 06, “Excavation and Backfill for Culverts and Minor Structures” and the requirements of Tabl e 570.2:2, “Culvert Materials Specifications, AASHTO (AWWA),” and current AASHTO LRFD Bridge Construction Specifications section applying to the pipe type. The Contractor shall ensur e that no “floating” occurs during installation of pipe Culverts. The Contractor shall use siphon Culvert pipe in accordance wit h Section 663, “Utility Items,” and the associated sections of the NMSSPWC .
570.3.2 Excavation and Backfill The Contractor shall excavate t renches in accordance with Sect ion 206, “Excavation and
Backfill for Culverts and Minor S tructures.” The Contractor sh all make the trenches wide enough to properly join the pipe and thoroughly compact the bed ding Material under and around the pipe. Where possible, the Contractor shall make the trench wall vertical. When Section 570: Pipe Culverts Page 596 using flowable fill for backfill, in accordance with Section 51 6, “Flowable Fill,” the Contractor shall make trench widths in accordance with AASHTO’s LRFD Bridge Construction Specifications , Section 26 for metal pipe and steel reinforced polyethylene p ipe; Section 27 for RCP; and Section 30 for thermoplastic pipe. The Contractor sha ll refer to NMDOT 206 Standard Drawings for additional pipe installation requirements .
570.3.3 Fill Height Requirements
The Contractor shall verify minimum and maximum cover over the pipe in accordance with the Standard Drawings. If the cover for the pipe is less than the minimum or greater than the maximum, contact the State Bridge Engineer for direction.
570.3.4 Laying Pipe The Contractor shall begin laying pipe at the downstream end o f the pipeline except for
extensions of existing pipes. T he Contractor shall place the b ottom of the pipe in contact with the shaped bedding throughout its full length. The Contractor shall place the bell ends or outside circumfere ntial laps of pipes facing upstream to obtain a shingling effect. The Contractor shall pl ace pipe with longitudinal laps or seams with the laps or seams at the sides. The Contractor shall lay paved or partially lined pipe so that the longitudinal centerline of the paved segment coincides with the flow line. The Contractor shall place elliptical and elliptically reinforced pipes wit h the major axis within five d egrees (5°) of a horizontal plane.
570.3.5 Joining Pipe
570.3.5 1 Joining RCP
The Contractor shall join pipe sections so that the ends are f ully centered and the inner surfaces are flush within the inside diameter tolerance variati ons of AASHTO M 170, but shall not exceed 5/8 inch. The Contractor shall make watertight joints with the following : 1. Cement grout; 2. Flexible watertight gaskets; 3. External sealing bands; or 4. Any combination of these types. For grouted joints, molds or runners shall be used to retain t he poured grout. Flexible watertight gaskets shall be inst alled to form a flexible watert ight seal. If using portland cement mixtures, the Contractor shall protec t the completed joints against rapid drying with a curing method approved by the Proje ct Manager. The Contractor shall replace coupling systems that do not fit snugly, in accor dance with Section 570.2.1.2, “Reinforced Concrete Pipe,” at no additional cost to the Depart ment.
570.3.5 2 Joining Flexible Pipe
The Contractor shall join metal or thermoplastic pipe with a f lexible pipe coupling system. The Contractor shall ensure the coupling systems engage an equa l number of corrugation or length on either side of the pipe joint. The Contractor shall replace coupling systems that do Section 570: Pipe Culverts Page 597 not fit snugly to the pipe ends, in accordance with Section 570 .2.2.2.1, “CMP Joint Material,” and Section 570.2.2.2.3, “Thermoplastic Joint Material,” at no additional cost to the Department. The Contractor shall use dimpled bands to attach end sections. The Contractor shall ensure the dimples fit snugly wi thin the given pipe’s corrugati ons. If the dimpled band connections do not fit correctly, th e Contractor shall use an a lternate way to connect the pipes. Where joints must have beveled ends to meet construction requi rements, the Contractor shall form a continuous unit i n accordance with the Plans. The Contractor shall make water tight joints using a bell and spigot conforming to ASTM D3212 and F477. The Contractor shall push spigot into bell end so spigot reaches homing mark on bell end. The Contractor shall repair damaged protective coatings in acc ordance with AASHTO M 36 at no additional cost to the Department.
570.3.5 3 Pipe Installation Inspection
The Contractor shall inspect the pipe before placing any backf ill. The Contractor shall replace or re-lay unacceptabl e pipe at no additional cost to th e Department. The Contractor shall ensure that pipe is installed in full com pliance with AASHTO’s LRFD Bridge Construction Specification, Section 26 (metal and steel rei nforced polyethylene pipe), Section 27 (RCP) or Section 30 (t hermoplastic) requirements. For thermoplastic pipe, the Contractor shall provide the Depar tment with the results of the deflection test detailed in Section 30 of AASHTO’s LRFD Bridge Construction Specification and a certification that the testing was completed. The requir ed deflection testing shall be performed at no additional cost to the Department.
570.3.5 4 Salvaging Culvert Pipe
The Contractor shall remove Culvert pipe to be salvaged or rei nstalled from the existing location in accordance with Section 601, “Removal of Structures and Obstructions.” The Contractor shall clean salvaged pi pe of Deleterious Material be fore storing or reinstalling.
570.4 Method of Measurement
The Department will measure all pay items using the dimensions shown in the Contract or approved modifications.
570.5 Basis of Payment
Pay Item Pay Unit Culvert Pipe Linear Foot Culvert Pipe End Section Each Culvert Pipe Arch Linear Foot Culvert Pipe Arch End Section Each Storm Drain Culvert Pipe Linear Foot Storm Drain Culvert Pipe End Section Each Section 570: Pipe Culverts Page 598 Storm Drain Culvert Pipe Arch Linear Foot Storm Drain Culvert Pipe Arch End Section Each Siphon Culvert Pipe Linear Foot Reinstalling Culvert Pipe Each The Department will pay for the removal of Culvert pipe in acc ordance with Section 601, “Removal of Structures and Obstructions.” The Department will pay for Culvert pipe cleaning in accordanc e with Section 613, “Cleaning of Culverts and Drainage Structures” when specified o n the Plans. The Department will pay for excavation for Culverts in accorda nce with Section 206, “Excavation and Backfill for Cu lverts and Minor Structures.”
570.5.1 Work Included in Payment
The following Work and items shall be considered as included i n the payment for the major items and will not be measured or paid for separately: 1. All joint Materials, shear connec tors required for joining s ections; 2. Testing and Certification of all Culverts; and 3. The coating of aluminum and aluminized steel pipe Type 2 whe n placed with fresh concrete. Removal of Culvert pipe shall be paid for in accorda nce with Section 601, “Removal of Structures and Obstru ctions.” Excavation for Culve rts shall be measured and paid for in accordance with Section 206, “Excavati on and Backfill for Culverts and Minor Structures.” Siphon Culvert pipe Work shall include trenching, connections to transitions, pipe jo ining, dewatering, installat ion of pipe, fittings miscellaneous components; including elbows, drains and blowoffs, backfill and compaction, encasing or specia l backfill and hydrostatic testin g. Section 571: Structural Pla te Structures Page 599