611.01Description. This work consists of constructing conduits, and constructing and
reconstructing drainage structures. This work also includes preparing installation plans, performing inspections, and providing reports and other required documentation.
611.02Materials. Furnish conduit material of the specified conduit type and conduit size or one
size larger with the approval of the Engineer . Conduit shown in the plans is designed for hydraulic capacity and the Material Durability Design. Provide conduit materials with Bedding and Structural Backfill materials that meet the structural design requirements of Supplement 1086 for each conduit run. Provide drainage structure materials with Bedding and Structural Backfill materials that will perform structurally for each location. Provide material descriptions and installation procedure details in the Installation Plans. Different conduit and drainage structure materials and the associated Bedding and Backfill may require varying installation procedures. If the conduit material is not specified in the plans, all material for that type of conduit will meet the Material Durability Design. The Contractor may furnish concrete or plastic pipe of the same type with greater strength than specified. The Contractor may furnish metal pipe with a greater thickness than specified, so long as the pipe has the same corrugation profile and is the same type.
Non-reinforced concrete pipe, Class 3 ......................................... 706.01 Reinforced concrete circular pipe .... 706.02 Reinforced concrete pipe, epoxy coated ................................ 706.03 Reinforced concrete elliptical pipe .. 706.04 Precast reinforced concrete box sections .................................. 706.05 Precast reinforced concrete 3-sided flat topped culverts ........................... 706.051 Precast reinforced concrete arch sections ...................................... 706.052 Precast reinforced concrete round sections ............................. 706.053 Corrugated steel conduits ........................ 707.01 or 707.02 Structural plate corrugated steel structures .............................. 707.03 Precoated, galvanized steel culverts ......................................... 707.04 Bituminous coated corrugated steel pipe and pipe arches with ............ 707.05 Type B or 707.07 Type B Corrugated steel box culverts ........... 707.15 Polymer Precoated, Galvanized Steel Conduits 472 with precoated galvanized smooth interior liner. ................................ .707.18 Corrugated aluminum alloy pipe ...................... 707.21 or 707.22 Aluminum alloy structural plate conduits ................................ 707.23 Corrugated aluminum box culverts .. 707.25 Corrugated polyethylene smooth lined pipe ......................... 707.33 Polyethylene Plastic Pipe Based on Outside Diameter
Polyethylene Profile Wall Pipe ........ 707.35 Corrugated Polypropylene Smooth Lined Pipe ....................... 707.65 Glass-fiber-reinforced polymer mortar pipe ................................... 707.75 Steel Reinforced Thermoplastic Ribbed pipe .................................. 707.85 Steel Pipe Encasement ..................... 748.06
Non-reinforced concrete pipe, Class 3 .......................................... 706.01 Reinforced concrete circular pipe .... 706.02 Reinforced concrete elliptical pipe .. 706.04 Precast reinforced concrete box sections .................................. 706.05 Vitrified clay pipe (extra strength only) ..................... 706.08 Polymer-precoated corrugated steel spiral rib pipe ....................... 707.11 Polymer Precoated, Galvanized Steel Conduits with precoated galvanized smooth interior liner. ................................ .707.18 Corrugated aluminum spiral rib pipe .......................................... 707.24 Corrugated polyethylene smooth lined pipe ...................................... 707.33 Polyethylene Plastic Pipe Based on Outside Diameter (OD) .......... 707.34 Polyethylene Profile Wall Pipe ....... 707.35 Polyvinyl chloride corrugated smooth interior pipe ..................... 707.42 Polyvinyl chloride profile wall pipe ....................................... 707.43 Polyvinyl chloride solid wall pipe ... 707.45 473 Polyvinyl chloride drain waste and vent pipe ................................ 707.46 Polyvinyl chloride ABS composite pipe ............................................... 707.47 Polyvinyl chloride large-diameter solid wall pipe .............................. 707.48 ABS drain waste and vent pipe ........ 707.51 Corrugated Polypropylene Smooth Lined Pipe .................................... 707.65 Glass-fiber-reinforced polymer mortar pipe ................................... 707.75 Steel Reinforced Thermoplastic Ribbed pipe .................................. 707.85 Ductile iron pipe (sanitary) .............. 748.01 Polyvinyl chloride pipe (sanitary) .... 748.02 Steel Pipe Encasement ..................... 748.06
Non-reinforced concrete circular pipe .................................. 706.01 Reinforced concrete pipe ................. 706.02 Reinforced concrete elliptical pipe .. 706.04 Precast reinforced concrete box sections .................................. 706.05 Vitrified clay pipe (extra strength only) ..................... 706.08 Polymer-precoated corrugated steel spiral rib pipe ....................... 707.11 Polymer Precoated, Galvanized Steel Conduits with precoated galvanized smooth interior liner. ................................ .707.18 Corrugated aluminum spiral rib pipe .......................................... 707.24 Corrugated polyethylene smooth lined pipe ...................................... 707.33 Polyethylene Plastic Pipe Based on Outside Diameter (OD) .......... 707.34 Polyethylene Profile Wall Pipe ........ 707.35 Polyvinyl chloride corrugated smooth interior pipe ......................... 707.42 Polyvinyl chloride profile wall pipe ....................................... 707.43 Polyvinyl chloride solid wall pipe ... 707.45 Polyvinyl chloride drain waste and vent pipe ................................ 707.46 Polyvinyl chloride ABS composite pipe .............................. 707.47 474 Polyvinyl chloride large-diameter solid wall pipe .............................. 707.48 ABS drain waste and vent pipe ........ 707.51 Polypropylene Corrugated Double Wall Pipe ...................................... 707.65 Glass-fiber-reinforced polymer mortar pipe ................................... 707.75 Steel Reinforced Thermoplastic Ribbed pipe ...................................... 707.85 Ductile iron pipe (sanitary) .............. 748.01 Polyvinyl chloride pipe (sanitary) .... 748.02 Steel Pipe Encasement ..................... 748.06
Non-reinforced concrete pipe, Class 3 .......................................... 706.01 Reinforced concrete circular pipe .... 706.02 Reinforced concrete elliptical pipe .. 706.04 Corrugated steel conduits ........................ 707.01 or 707.02 Structural plate corrugated steel structures .............................. 707.03 Corrugated aluminum alloy pipe ............................... 707.21 or 707.22 Aluminum alloy structural plate conduits ................................ 707.23 Corrugated polyethylene smooth lined pipe ......................... 707.33 Polyvinyl chloride corrugated smooth interior pipe ..................... 707.42 Polyvinyl chloride profile wall pipe ....................................... 707.43 Polyvinyl chloride solid wall pipe ... 707.45 Polyvinyl chloride large-diameter solid wall pipe .............................. 707.48 Polypropylene corrugated single wall pipe ....................................... 707.62
Non-reinforced concrete pipe .......... 706.01 Reinforced concrete circular pipe .... 706.02 Reinforced concrete elliptical pipe .. 706.04 Concrete drain tile, extra quality ...... 706.07 Vitrified clay pipe (extra strength only) ..................... 706.08 Clay drain title, extra quality ........... 706.09 475 Corrugated steel conduit .. 707.01 or 707.02 Corrugated aluminum alloy pipe ...................... 707.21 or 707.22 Corrugated polyethylene drainage pipe ................................ 707.32 Corrugated polyethylene smooth lined pipe ......................... 707.33 Smooth-wall polyvinyl chloride underdrain pipe (non-perforated) ........................... 707.41 Polyvinyl chloride corrugated smooth interior pipe ..................... 707.42 Polyvinyl chloride profile wall pipe ....................................... 707.43 Polyvinyl chloride solid wall pipe ... 707.45 Polyvinyl chloride drain waste and vent pipe ................................ 707.46 Polyvinyl chloride ABS composite pipe .............................. 707.47 Polyvinyl chloride large-diameter solid wall pipe .............................. 707.48 ABS drain waste and vent pipe ........ 707.51
Corrugated steel conduits ......................... 707.05 Type C or 707.07 Corrugated aluminum alloy pipe (steep slope conduit) ..... 707.21 or 707.22 Corrugated polyethylene smooth lined pipe ........................ 707.33 Smooth-wall polyvinyl chloride underdrain pipe (non-perforated underdrain outlets) ........................ 707.41 Polyvinyl chloride corrugated smooth interior pipe (underdrain outlets) ...................... 707.42 Polyvinyl chloride solid wall pipe (underdrain outlets) ...................... 707.45
Concrete, Class QC1. .................... 511, 499 Precast reinforced concrete manhole, catch basin, and inlet sections ...... 706.13 Precast reinforced concrete outlet .... 706.15 Preformed expansion joint filler ...... 705.03 Epoxy coated reinforcing steel ......... 709.00 Cast frames, grates, and 476 covers ............. 711.12, 711.13, or 711.14 Welded frames and grates ......................... 711.01 and 513.17 Steps ................... 711.13, 711.30, or 711.31 Resilient and flexible gasket joints .................................. 706.11 Curing materials .................. 705.05, 705.07 Curing membrane for inlets ............... 705.07, Type 1 or 1-D Nonshrink mortar… ............. ………705.22
Bedding……………….703.11, 613.03 Type 2, 613.05 Alternative Mix Structural Backfill ……703.11, 613.03 Type 2, 613.05 Alternative Mix Final Backfill: Granular Structural Backfill ........ 703.11 Natural Soils ........................ 703.16.A[1] Granular Embankment Materials ............................... 703.16.B[1] Granular Embankment Material Types A, B, C and D ........... 703.16.C[1] Coarse aggregate ............. Table 703.01-1 ................ 703.02.A, 703.03, or 703.05.A 304 ............................................ 703.17.A 410, 411, , and 617 .................. 703.18.A[1] Low Strength Mortar [1] Use any type of material defined as suitable materials for embankment construction except for steel slag, PCS and RAP.
Concrete, Class QC 1 .................... 511, 499 Reinforcing steel ............................. 509.02
Concrete, Class QC 5, QC Misc ... 511, 499 Coarse aggregate, size No. 7, 8, or 78 ....................... 703.02 Galvanized welded wire fabric ........ 709.08 For material in items not specified above, furnish materials conforming to: Nonshrink mortar ............................. 705.22 Concrete Sealers............................... 705.23 Bituminous pipe joint filler .............. 706.10 Resilient and flexible gasket joints for: 477 Concrete pipe ................................ 706.11 Vitrified clay pipe ......................... 706.12 Preformed flexible joint sealant ....... 706.14 Type 2 membrane waterproofing ..... 711.25 Type 3 membrane waterproofing ..... 711.29 Geotextile Fabric ................ 712.09, Type A Joint wrap ................ ASTM C877, Type III Buried liner waterproofing membrane ..................................... 711.22 For Class QC1 concrete, provide batch plant tickets according to 499.07. If bituminous coated corrugated steel pipe or pipe arch with paved invert ( 707.05 or 707.07) is specified, the Contractor may furnish conduit with a coating conforming to 707.04.
611.03Definitions. The following terms, when used in this specification, are defined as follows:
Backfill. Material used to fill the trench or excavation, further defined as Structural Backfill and Final Backfill, not including the bedding material. Bed. The bottom of the trench or excavation. Bedding Material. Material placed above the bed and below the conduit or drainage structure. Conduit. Includes pipe, culverts, sewers, and drains. Conduits are classified as Type A, B C, D, E, and F. Conduit Rise. The distance of the greatest vertical opening of the conduit. For round conduits, the conduit rise equals the conduit diameter. Corrugated Metal Conduit . Includes all conduit made from corrugated steel or corrugated aluminum. Either material may also have coatings. This includes all of the following types of materials:
707.01, 707.02, 707.03, 707.04, 707.05, 707.07, 707.11, 707.12, 707.13, 707.14, 707.15, 707.17,
707.21, 707.22, 707.23, 707.24, and 707.25
Cut. A situation where the top of the conduit is below the existing ground surface or where a proposed embankment is constructed at least 2 feet (0.6 m) above the top of the conduit before installation. Deflection. Uniform or symmetrical flattening or ovalization of the pipe’s cross-section. Drainage Structures . Manholes, catch basins, inlets, inspection wells, junction chambers, and precast reinforced concrete outlets. Fill. A situation where the top of the conduit is above the existing ground surface in an area where an embankment will be constructed. Final Backfill. Material used to fill the trench or excavation above the Structural Backfill. Flexible Conduit. Plastic, corrugated metal, ductile iron (748.01), or steel casing pipe (748.06). Infiltration. Water or other material that enters the conduit or drainage structure through the joints or conduit connections in excess of the limits for soil tightness or for the type of joint specified. Lay Length. The length of a standard section of pipe as normally supplied by the manufacturer. Material Durability Design. Empirical design method used to ensure a 75-year average service life due to conduit material degradation caused by water chemistry and suspended material abrasion. 478 Plastic Conduit. Corrugated polyethylene, polyvinyl chloride, or ABS conduit. This includes all of the following types of materials: 707.32, 707.33, 707.41, 707.42, 707.43, 707.44, 707.45, 707.46,
707.47, 707.51, 707.62, 707.65, 707.69, 707.85, and 748.02
Racking. Non-symmetrical deflection or ovalization of a pipe’s cross-section. Rigid Conduit. Concrete pipe, vitrified clay pipe, or clay drain tile. This includes all of the following types of materials: 706.01, 706.02, 706.03, 706.04, 706.05, 706.051, 706.052, 706.053, 706.08, and 706.09 Run of Conduit. The conduit placed between drainage structures, between a drainage structure and an open outlet, between an open inlet and a drainage structure, or between the open inlet and open outlet. Span. Span is the conduit opening measured along the centerline of the roadway. Spring Line. A line along the length of the pipe at its maximum span. For circular pipes the spring line is located at mid-height of the pipe (rise divided by two). Structural Backfill. Material adjacent to the conduit used to fill the trench from the top of Bedding Material to 12-inches above the top of conduit or greater as required by the manufacturer. For drainage structures, material used to fill the trench from the top of Bedding Material to subgrade in pavement or topsoil in vegetated areas.
611.04Submittals
706.053. Submit calculations for C&MS items 706.051, 706.052, 706.053 and all conduit materials as
required below. Have competent individuals prepare and check the shop drawings and required calculations. Provide a cover sheet containing the preparer(s) and checker(s): First Name, Last Name, Initials and Content Responsibility. Preparer(s) and checker(s) shall initial each sheet for their content responsibility. The preparer(s) and checker(s) shall not be the same individual. Have an Ohio Registered Engineer review, approve, sign, seal and date the shop drawing cover sheet or submittal letter and hydraulic calculations according to ORC 4733 and OAC 4733-35.
the most current version of ODOT’s Bridge Design Manual along with one copy of the shop drawings and one copy of the calculations to the Office of Structural Engineering for all structures with a 10 foot or larger span. Submit an additional copy of the shop drawings and calculations to the Engineer.
specified D-load requirement other than Tables 706.02-1 through 706.02-4, submit special structural design calculations. Design the pipe to meet the D -load requirements. Include the following information in the submittal: all structural design and loading information, all material specifications, all dimensions, and the installation plan.
concrete arch sections, or precast reinforced concrete round sections, ( 706.051, 706.052, or 706.053) shall include structural analysis methods, structural design criteria and calculations, structure details, and shop drawings. Include details for a precast slab bottom if required. Department approval of shop drawings and calculations is not required.
drainage structures for review and acceptance. Submit the installation plan at least 15 days before any conduit or drainage structure work begins. 479 Do not perform work without an accepted installation plan. Include the following required information for each conduit run:
Bedding and Backfill types and compaction as described in the CA-P-1A Installation Plan Form will perform structurally for the location. This confirmation by the conduit manufacturer will not relieve the Contractor of the responsibility for obtaining the required results. Include the following required information for each drainage structure:
Submit any deviations from the installation plan prior to commencing with the Work. Resubmit all installation plan revisions and applicable special structural design calculations to the Engineer within 14 days of the change with the conduit manufacturer’s written confirmation as described above. Do not perform conduit or drainage structure Work without an updated, manufacturer signed and accepted installation plan. For structural plate and metal pipe arch conduit with a span of 57 inches (1440 mm) or larger, ensure the manufacturer provides match-marked ends on the conduit. Include a layout drawing in the installation plan. For metal conduit with two structural plate thicknesses specified, identify the location of the thicker plates. For precast concrete 3 -sided flat and arch topped structures ( 706.051 and 706.052) provide a 3 inch (75 mm) deep keyway centered on the leg and at least 6 inches (150 mm) wider than the thickness of the leg at the bottom. For precast concrete round sections (706.053) provide an 8 inch (200 mm) deep keyway for spans up to 24 feet (7.3 m) and a 10 inch (254 mm) deep keyway for spans greater than 24 feet, (7.3 m). Center the keyway on the precast arch base. The width of the keyway must be 8 inches (200 mm) greater than the thickness of the precast arch base. For non -vertical leg arches set on pedestal walls, a one sided keyway is acceptable if the required pedestal wall design thickness is not sufficient for a full keyway.
representative performing the inspection. Notify the Engineer in writing at least 14 days prior to beginning the work. Submit construction inspection forms to the Engineer for each run of conduit and each drainage structure. Use construction inspection form CA-P-1 for conduit and use construction inspection form CA-P-3 for drainage structures. Inspection form CA-P-3 is not required for precast reinforced concrete outlet structures 706.15. Ensure that all deviations from the installation plan are noted on the construction inspection form. Ensure that the information on the construction inspection form is complete and accurate and that the form is signed by a representative of the Contracto r 480 certifying that the information on the form is accurate. The Contractor’s representative must make the following statement on the form: “I certify that the information on this form is accurate and all deviations from the current installation plan have been noted.” Submit each day’s construction inspection forms before the start of the next work day. If the Engineer gives notice that the information on the form is incomplete or not accurate, do not continue related work until complete and accurate forms are submitted and accepted by the Engineer. Construction inspection forms CA-P-1 and CA-P-3 require trench and bedding measurement checks to be taken every 50 feet with a minimum of two per run. Record measurements to the nearest 0.1 foot (30 mm). If these measurements are not taken, do not continue related work until the Contractor submits a plan in writing to the Engineer for approval that explains how these measurements will be determined.
following in each performance report:
mandrel and how it was calculated. Document all locations where the mandrel was unable to advance through the conduit.
Submit a performance report to the Engineer within 14 days of completing the performance inspection of the conduit run or drainage structure. Submit the performance report in a digital format that allows the Department to make additional copies.
611.05Excavation. Excavate as described in the installation plan. Record any deviations from
the installation plan on the construction inspection forms and revise the installation plan. Excavate trenches along the centerline of the conduit. When installing conduit in a fill situation, construct the embankment to the elevation of the spring line for the conduit or higher before excavating the trench. Provide a firm bed for the full width and length of the trench for conduits and drainage structures. Remove any unsuitable material exposed in the bed for the width of the trench and a depth of at least 6 inches (150 mm). Replace the unsuitable material with structural backfill, Type 1 or 2. Remove any 481 rock or shale exposed in the bed to a depth of at least 6 inches (150 mm). Replace the rock or shale with Structural Backfill, Type 1 or 2. The Department will pay for this work according to 109.05, unless otherwise noted in the Contract Documents. If the Engineer changes the flow line by more than one foot (0.3 m), the Department will pay according to 109.05, unless otherwise noted in the Contract Documents.
611.06Bedding and Backfill . Place and compact bedding and backfill as described in the
installation plan. Record any deviations from the installation plan on the construction inspection forms and revise the installation plan. Place geotextile fabric, Type A above coarse aggregate backfill for the full width of the trench. For installations where groundwater is probable, wrap coarse aggregate bedding and backfill with geotextile fabric to the elevation or above the elevation of the the groundwater. Shape the bedding with recesses to receive the bell of bell -and-spigot conduit. Loosen the bedding in the middle third to seat the conduit. If using LSM for bedding, also use LSM for backfill to at least 6 inches (150 mm ) over the top of the conduit. Mix and place LSM per 613. Apply exterior coating to aluminum and aluminized steel conduits according to 611.09 C. prior to placement of LSM Bedding or Backfill. Install bedding and backfill for Type F conduits for underdrain outlets according to 605.03.C. Conduit Manufactures may approve materials listed in 611.02 for Final Backfill for use as Bedding and Structural Backfill for Type F conduits on slopes 3:1 or greater. Conduit Manufacturers may approve materials listed in
for Final Backfill for use as Structural Backfill for conduit Types D and E and drainage
structures not located in pavement. Identify the use of Final Backfill materials proposed for Bedding and Structural Backfill in the Installation Plan and cross-section details. Vibrate, tamp or compact each Bedding and Backfill lift. Perform compaction density testing of Bedding and Backfill according to Supplement 1015. If Structural Backfill Type 3 or open graded material is used, place the aggregate in lifts not to exceed 12 -inches. Measure the Structural Backfill Type 3 compacted lift to ensure consolidation is 85 percent or more of the original lift thickness. Final Backfill shall meet or exceed the requirements of 203.
611.07Laying Conduit. Maintain flows and drainage at all times until the new facilities are
completed and in service. Any planned temporary diversion of flows and drainage is the responsibility of the Contractor. Maintain temporary diversion at no additional cost to the Department. Visually inspect all conduit before it is placed in the trench. Replace all conduit that is damaged as determined by the Engineer. Before installation, measure and record on the CA-P-1 the widest inside dimension of each lay length of conduit. This measurement is to be taken three times along each run of conduit. For corrugated metal conduit measure to the inside peak of the corrugations. Lay the conduit in the center of the trench at the invert elevation shown on the plans. Any deviation must be approved by the Engineer. If the Engineer does not approve the deviation, stop all related work until the conduit is relaid. Ensure that the conduit is in contact with the bedding for its full length and maintain the line and grade of the conduit. The Contractor ’s representative doing the inspection will visually inspect all conduit before placing any backfill. Rejoin, re -lay, or replace conduits that have settled, or that are damaged. Lay all conduits as described in the installation plan and according to the following requirements. The installation plan cannot change the following requirements. Meeting these requirements does not relieve the Contractor of the responsibility for obtaining the required results. Record any deviations from the installation plan on the construction inspection forms and revise the installation plan.
482
coating as the conduit. Do not treat any cuts within the run.
installation plan.
the units in a 1/2 inch (13 mm) bed of mortar. If proper line and grade of the structure cannot be maintained on the bed of mortar, set the sections on 5 5 inch (125 125 mm) masonite or steel shims. Fill the entire keyway joint with mortar.
(125 125 mm) masonite or steel shims to provide a minimum 1/2 inch (13 mm) gap between the footing and the bottom of the leg. Fill the entire keyway joint with mortar.
masonite or steel shims to provide a minimum 1.5 inch (38 mm) gap between the footing and the bottom of the precast arch base. Fill the entire keyway joint with mortar. Provide 5000 psi. (34.5 MPa) mortar. For arches that gain structural continuity by a cast-in-place closure at the project site, provide concrete with the same compressive strength as the precast arch.
devices with mortar. Cover the exterior of the lifting devices with joint-wrap material if they are outside the limits of the membrane waterproofing. Use joint -wrap with a minimum width of 9 inches (225 mm). Use only lifting devices that do not require a hole through the structure.
cutting is necessary to furnish a bell at the inlet, locate the cut end at an interior joint by removing part of a section within the run. Join the conduit as described below and encase the joint with a concrete collar to ensure a stable connection.
be clearly marked on the pipe. Handle and place this pipe so that the markings remain in a vertical plane through the center of the pipe.
centerline of the auxiliary reinforcement system (stirrups) in a vertical plane through the center of the pipe.
recommendations or using a method approved by the Engineer.
Show this activity as part of the conduit construction on the progress schedule. These end treatments include headwalls, concrete riprap, rock channel protection, sod or other erosion control items.
of backfill placement and compaction: remove and dispose of all surplus material according to 105.17, clear the site, and replace all pavement necessary to restore traffic. Show this activity as part of the conduit construction on the progress schedule.
483
611.08Joining Conduit. Ensure the joints are clean and free from dirt or debris. Join the conduit
sections as described below. Visually inspect all conduit, joints, and gaskets before placing any backfill. Rejoin, re-lay, or replace any conduit that does not meet the requirements. The Engineer may allow joint materials other than those listed below, provided the Contractor demonstrates the proposed material will result in durable, sealed joints. Join conduit as described in the installation plan and according to the requirements below. Provide a concrete masonry collar per SCD D.M.-1.1 when joining conduits of different materials. For conduit material not listed below, join conduit as recommended by the manufacturer. Record any deviations from the installation plan on the construction inspection forms and revise the installation plan.
either coupling bands or bell and spigot joints. Join the conduit according to the following requirements.
same coating as the conduit being joined. Use either coupling bands with gaskets or wrap the joints with geotextile fabric, Type A.
the spigot end and thoroughly lubricate the gasket and the bell end of the receiving conduit before assembly. Drive the spigot securely into the bell.
707.18, 707.19 and 707.20
requirements.
(706.08), seal the joints using one of the following methods:
and a complete seal on the outside.
prime both surfaces of the joint with asphalt based primer according to the joint sealant manufacturer’s recommendations.
joint for infiltration and exfiltration according to ASTM C969 or ASTM C1103. If any joint does not meet the test requirements, make corrections until the joint meets the test requirements.
applied according to the conduit manufacturer’s recommendations.
culverts, precast reinforced concrete arch sections, and precast reinforced concrete round sections (706.05, 706.051, 706.052, and 706.053), place the sections according to the installation plan. Clean the joint gap of all debris and apply one of the following:
gap and the bottom and side interior joint gap with nonshrink mortar. Provide a smooth transition between exterior joint sections for all exterior surface elevations that deviate by more than 0.25 inches. Ensure a smooth surface for placement of the exterior joint wrap. Next, cover all exterior joints with a 12 inch wide strip of joint wrap , centered on the joint, in accordance with the joint wrap 484 manufacturer’s recommendation. Apply additional water proofing membrane, as specified in the contract documents, directly over the joint wrap.
joint with nonshrink mortar. If the side or leg joints are tongue and groove types, fill the joints as described above for concrete box culverts. If the side or leg joints are keyway types, fill with nonshrink mortar. Prepare, place, and cure the nonshrink mortar according to the nonshrink mortar manufacturer’s recommendations. Wet all surfaces of the keyway joint, but do not allow free standing water in the joint. Next, cover the exterior joint with a 12 inch (300 mm ) wide strip of joint wrap. Center the joint wrap on the joint. Use a continuous length of joint wrap sufficient to extend from the bottom of the vertical face on one side to the bottom vertical face on the other side. Apply membrane waterproofing to the precast sections after they are installed.
sections (706.052 and 706.053), install a 7/8 x 1 3/8 inch (24 x 34 mm) preformed flexible joint sealant (706.14) along the outside joint chamfer. Use a continuous length of joint sealant sufficient to extend from the bottom of the vertical face on one side to the bottom vertical face on the other side. Before installing the joint sealant, prime the joint chamfer wi th a primer according to the joint sealant manufacturer’s recommendations. For 706.052 and 706.053, cover all exterior joints with a 12 inch (300 mm) wide strip of joint wrap centered on the joint. Use a continuous length of joint wrap sufficient to extend from the bottom of the vertical face on one side of the structure to the bottom vertical face on the other side. Next, apply all waterproofing as shown on the plans. Apply membrane waterproofing to the precast sections after they are installed.
culverts, precast reinforced concrete arch sections, and precast reinforced concrete round sections (706.05, 706.051, 706.052, and 706.053), apply an approved epoxy-urethane sealer per the plans to all top surfaces not covered by membrane waterproofing. Extend sealer 1 foot (0.3 m ) below the backfill on all sides of the culvert sections including the joint.
and spigot joints, or bell-bell couplers. Join the conduit according to the following requirements.
least two full corrugations on each conduit section. Furnish gasketed coupling bands of the same material as the plastic conduit.
For gasketed joints, ensure that the gasket is properly seated after joining.
minimum 4 inch (100 mm) wide tarred paper or tarred burlap. Place soil around this material to hold it in place during backfilling.
611.09Exterior Coatings and Membrane Waterproofing . Apply exterior coatings and
membrane waterproofing as specified below. Protect the exterior coatings and membrane waterproofing from damage during placing of the bedding, backfill, and embankment.
Apply membrane waterproofing as specified. Apply the membrane waterproofing to all surfaces that will be in contact with the backfill (top and sides) according to the membran e waterproofing manufacturer’s recommendation. 485
and 707.25), apply waterproofing by one of the following methods.
backfill. Ensure that all plate seams and bolts are thoroughly sealed. Furnish coating material and apply it according to AASHTO M 243. Allow asphalt mastic material to dry 48 hours and tar base material to dry 28 hours before placing the conduit backfill. Rib stiffeners do not need to be coated.
manufacturer’s recommendations. The buried liner waterproofing membrane protection must be a continuous sheet placed over the conduit and extend at least 10 feet (3.3m) outside of the paved shoulder and for the width of the trench. Seams constructed in the field are not acceptable.
707.22, 707.23, 707.24, 707.25) with a zinc chromate -free primer or an epoxy paint formulated for
aluminum when using LSM (613) for Bedding or Backfill.
611.10Drainage Structure Construction. Install drainage structures as shown on the plans and
standard construction drawings. Maintain flows at all times until the new facilities are completed and in service. Visually inspect all precast drainage structures before they are placed. Replace all drainage structures that are damaged as determined by the Engineer. Install each drainage structure casting to the elevation, station, and offset shown on the plans. Any deviations must be approved by the Engineer. If the Engineer does not approve the deviation, stop all related work until the drainage structure is reinstalled. The offset is to the center of the casting. Place each manhole base so that it is in alignment with the pipe and its invert elevation accor ding to the standard construction drawings. Use flat slab top manholes as shown on the standard construction drawing. Do not remove the flat slab top manhole lifting devices. Locate or cut conduits so any protrusion inside the structure wall is minimized. Set iron frames, tops, and covers in mortar with a flush joint. Prevent earth or debris resulting from construction operations from entering the drainage structure. Remove any debris resulting from construction. Thoroughly grout the underdrain outlet pipe to the precast reinforced concrete outlet with a flush mortar joint. Take adequate precautions to prevent concrete or mortar from freezing. Preheat the brick, concrete block, or precast concrete structure throughout the entire mass to a temperature between 50 to 80 F (10 to 27 C) before placing mortar if the ambient temperature is 40 F (4 C) or less.
thoroughly wet the units before placing in mortar. Lay the units with a flush mortar joint. Cure the exposed surfaces of all brick and block masonry by covering with wet burlap or by applying a cu ring membrane according to 705.07. Keep burlap wet for at least 48 hours.
bases on a compacted bed with or without a bedding material as described in the installation plan. Ensure that the bed is level and uniformly supports the entire area of the base. Seal all jo ints between modules as described above for concrete conduit. All penetrations through precast drainage structures must be either manufactured or cored. 486 After placing the conduit, grout all openings less than 4 inches (100 mm ) between the pipe and structure with mortar. Grout all openings greater than 4 inches (100 mm) between the pipe and structure with non-shrink mortar. Furnish the same curing membrane for barrier inlets as that used on the barrier. Apply the curing membrane according to 622.07.
follow the procedure below.
necessary. Remove existing walls of catch basins and inlets below the window openings, grates, or any points of wall failure.
as practicable to the existing dimension and type of construction. Reset the existing casting in mortar, with a flush joint, to the new grade.
grade, follow the procedure(s) below.
the new grade. Provide an adjusting device on file with the Office of Materials Management, or as approved by the Engineer. Reset the existing casting in mortar, with a flush joint, to the new grade.
device on file with the Office of Materials Management or as approved by the Engineer. Install the adjusting device according to the adjusting device manufacturer ’s recommendations. Reset the cover or grate to the new grade.
611.11Field Paving of New or Existing Conduit . Field pave the bottom of the conduit with
concrete as shown on the plans. Installation Plans are not required for field paving of existing conduits. Include any field paving details in the Installation Plan for all new conduit. For new pipe installations, do not pave until at least 4 feet (1.2 m) of fill is placed on top of the conduit or the top of subgrade is reached. If the paving is placed before completion of the entire fill, clean any gaps between the conduit and concrete paving, and then fill with heated bituminous material conforming to 705.04. Prepare the conduit surface by cleaning and removing all debris and obstructions. Reinforce the paving with 2 x 2 -W0.9 x W0.9 galvanized welded wire fabric or epoxy coated reinforcing steel meeting the material requirements of 509.02. Provide galvanized wire fabric or epoxy coated reinforcing steel with a width 4 inches (100 mm) less than the finished paving. Provide support beneath the mesh where necessary using galvanized support chairs or #4 epoxy coated reinforcing steel. Securely fasten the mesh to the conduit near each edge and at the center of the mesh at points not more than 4 feet (1.2 m) apart along the flow line of the culvert. Securely fasten the epoxy coated reinforcing steel to the conduit at each end and along the length of the steel not more than 4 feet (1.2 m) apart. Repair any damage to the galvanizing or other coating material caused by placement or by tack welding. Use wire brushing and zinc rich paint to make the repairs. Completely coat the area to be paved with a zinc chromate-free primer or an epoxy paint formulated for aluminum on all aluminum or aluminized steel conduits (707.01, 707.02, 707.21, 707.22, 707.23,
707.24, 707.25). Extend primer or epoxy 4 inches beyond the proposed paving limits. For aluminum
structural plate, securely fasten the mesh to the circumferential seam bolts with galvanized tie wire. 487 Construct paving so that it is 3 inches (75 mm) thick measured from the top of the corrugations of the conduit to a height equal to 1/3 of the Conduit Rise. Maintain the position of the mesh while placing concrete. After placing the concrete, strike it off with a template to produce the proper radius, and finish with a float to produce a smooth finish. Cure the concrete according to 451.11. When field paving existing conduits, maintain flows in accordance with 611.07. When standing water is encountered and cofferdams are necessary, construct and pay for cofferdams per Item 503.
611.12Performance Inspection. Notify the Engineer at least five workdays before conducting
a performance inspection. Ensure the Engineer is present during all performance inspection activities. For all Type A, B, and C conduits, inspect all lengths greater than 20 feet with slopes of 25 percent or less and all new drainage structures. Performance inspections are not required for all Type D, E and F conduits. A performance inspection is not required for projects that meet all of the following: All conduit is Type C Conduit plan quantities are less than 100 feet (30.5m) All conduit has less than 16 feet (4.8m) of maximum fill height In each phase of construction of a conduit, perform the inspection no sooner than 30 days and no later than 90 days after the completion of the finished grade when not below pavement and after the completion of the rough subgrade when any portion of the co nduit is below pavement. The Engineer may permit inspection beyond the 90 day limit. If any corrections are made to the installed pipe after the completion of the finished grade or rough subgrade and prior to the performance inspection, wait 30 days after the correction was made to do the per formance inspection. If the contract duration will not permit a 30 day waiting period then the Engineer may adjust the waiting period. Visually inspect for surface settlements within the trench limits or within 4 feet of a drainage structure. Document all locations of surface settlement in the inspection report. Furnish a video recording of all conduit and drainage structure inspections. On the recording, identify the date and time of the inspection, a description of the conduit or drainage structure being inspected, the location, and the viewing direction. Record the entire run of conduit being inspected. Provide a source of light that allows all areas of concern to be readily observed on the video recording. Furnish the video recording in a digital, reproducible format on one of the following media types: Portable hard drive, flash drive or as determined appropriate by the Engineer. Provide the video files with a naming format consistent with the Installation Plan references or as determine acceptable by the Engineer. Ensure that the condition of the conduit will allow an accurate inspection. Perform a manual inspection on drainage structures. Perform either a manual inspection or remote inspection as follows: Non-circular conduits Manual inspection Conduits with a rise of 60 inches (1500mm) and greater Manual inspection Conduits with a rise of 36 inches (900mm) up to 60 inches (1500mm) Manual or Remote inspection Conduits with a rise of 12 inches or greater up to 36 inches (300 to 900 mm) Remote inspection Conduits with a rise less than 12 inches (300 mm) and Type D, E, and F conduits – Remote inspection as directed by the Engineer. The Department will pay for this inspection according to 105.10. 488
record video and to make measurements. If the conduit or drainage structure is considered a confined space, provide entry for all project inspection personnel according to OSHA requirements. Measure the deflection of the conduit using either a metal tape, fabric tape or equipment accepted by the Engineer and read to the nearest ½ inch (10 mm ). Measure crack width using either a crack comparator or a feeler gage capable of measuring 0.01 inch (0.25 mm). Measure joint gaps using a tape or ruler and read to the nearest ½ inch (10 mm). Other measuring devices may be used if approved by the Engineer. Record the measurements and include them in the performance report. Measure the following:
in the run. Take the first measurement vertically from the crown to invert (12 o’clock to 6 o’clock positions). Take the second measurement by rotating 60 degrees from vertical (2 o’clock to 8 o’clock positions). Take the third measurement by rotating 120 degrees from vertical (4 o’clock to 10 o’clock positions). For all measurements, stretch tape to full extent across inside of pipe. For corrugated metal conduit, the inside diameter is defined as the distance between the inside peaks of the corrugations.
separation at the seam.
widest gap at each conduit entering the drainage structure. Record the location of any other defect not listed above and describe the defect. For each measurement location in a conduit, record the length from the nearest drainage structure.
video and using equipment described below to make measurements. Use equipment that meets the requirements of Supplemental Specification 902 (SS902). Remove all debris from the conduits being inspected according to 107.19. Dewater the conduit if the water level hinders the performance of the equipment. Based on the type of conduit, make measurements using the equipment listed in the following table. Also record the location of any other defect not listed below and describe the defect. 489 TABLE 611.12.B Conduit Type Measurement Equipment Type of Measurement Rigid conduit and 748.06, steel casing pipe Crawler mounted camera according to SS902.01 with crack measuring capabilities according to SS902.02 C Joint gaps Crack widths Plastic conduit, 707.12, corrugated steel spiral rib conduit, 707.24, corrugated aluminum spiral rib conduit, 748.01, ductile iron pipe, and Circular corrugated metal conduit not listed below Crawler mounted camera with laser profiler according to SS902.02 A, B, and C or Mandrel according to SS902.03 and Crawler mounted camera according to SS902.01 with crack measuring capabilities according to SS902.02 C Joint gaps Crack widths Deflection The following types of corrugated metal conduit:
707.04, precoated, galvanized steel
culverts
707.05and 707.07, bituminous
coated corrugated steel pipe with paved invert,
707.11Polymer-precoated
corrugated steel spiral rib pipe
707.13and 707.14, bituminous
lined corrugated steel pipe Crawler mounted camera with laser profiler according to SS902.02 A, B, and C Joint gaps Crack widths Deflection
611.13Conduit Evaluation. Have an independent Registered Engineer review the conduit
Performance Inspection and provide a written documentation of whether defects listed in Table 611.13 are present or not. Record any other identified defects present in the conduit. Evaluate the defects to ensure structural stability and hydraulic capacity are in conformance with the contract documents and as prescribed by AASHTO LRFD Bridge Construction Specifications, Section 26 for metal conduit, specification. Provide written documentation of evaluations performed of all defects and any recommended repairs to the Engineer. The independent Registered Engineer cannot be an employee of the Contractor or the conduit manufacturer. When using a laser profiler, the conduit deflection must be calculated from the actual inside diameter at the measured location or calculated by inputting the nominal diameter. When using a mandrel, the mandrel must be sized according to 902. If the evaluation determines repairs are not necessary and repairs are not required based on the type or size of the defect in Table 611.13, have the independent Registered Engineer make the following statement in the evaluation: “I certify that repairs are not required to address the defects identified during the conduit evaluation. The conduit will function in accordance with the contract documents.” If the evaluation determines repairs are necessary, or if repairs are required based on the type or size of the defect in Table 611.13, have the independent Registered Engineer prepare, sign, seal, and date 490 plans for the repair. The independent Registered Engineer must make the following statement on the repair plans: “I certify that this repair plan was designed to ensure the repaired conduit will function structurally and provide hydraulic capacity in accordance with the contract documents.” TABLE 611.13 Metal Conduit Evaluate if infiltration is observed. Evaluate all racking, buckling or denting. Evaluate all vertical sags or misalignments exceeding 0.1 ft. Repair or replace vertical sags or misalignments of 0.25 ft and greater. Evaluate the overall vertical alignment of the conduit recorded in CA-P-1. Evaluate if the joint gap exceeds the Manufacturer’s tolerance*. Repair or replace conduit if the joint gap exceeds the Manufacturers tolerance*. Repair all damage to coatings. Repair or replace conduit if the Performance Inspection per 611.12 indicates a deflection > 7.5%. Replace conduit if the Performance Inspection per 611.12 indicates a deflection > 12% Rigid Conduit Evaluate if infiltration is observed. Evaluate if joint gap exceeds the Manufacture’s tolerance*. Evaluate all vertical sags or misalignments exceeding 0.1 ft. Repair vertical sags or misalignments of 0.25 ft and greater. Evaluate the overall vertical alignment of the conduit recorded in CA-P-1. Repair or replace conduit if the joint gap exceeds the Manufacturers tolerance* . Repair or replace conduit if cracks > 0.10 inch. Repair or replace conduit if spalls or slabbing are observed. Plastic Conduit Evaluate if infiltration is observed. Evaluate all racking, bulging or buckling. Evaluate if joint gap exceeds the Manufacturers tolerance*. Evaluate all vertical sags or misalignments exceeding 0.1 ft. Repair vertical sags or misalignments of 0.25 ft and greater. Evaluate the overall vertical alignment of the conduit recorded in CA-P-1. Evaluate all cracks. Repair or replace conduit if the joint gap exceeds the Manufacturer’s tolerance*. Repair or replace conduit if Performance Inspection per 611.12 indicates a deflection > 7.5%. Replace conduit if the Performance Inspection per 611.12 indicates a deflection > 12% * Note: The tolerance is defined as the maximum joint gap listed in the Installation Plan. Submit the evaluation, repair plans, and revised installation plan to the Engineer at least 7 days before performing the repairs. Provide written confirmation from the conduit manufacturer that the repair methods are appropriate. The Department may review the submittal, but Department acceptance is not required. If the Department does n ot review the plan, proceed with the repairs 7 days after delivering 491 the submittal to the Engineer. If the Department reviews the submittal and determines it does not conform to the Contract, revise, resubmit, and proceed with the repairs only after the Department accepts the resubmittal. Perform the repair at no additional cost to the Department. Perform an inspection to evaluate the repaired portion of the conduit and any conduit potentially affected by the repair work 30 days after the repair has been made. Perform the inspections according to 611.12 and at no additional cost to the Department. Have an independent Registered Engineer evaluate the inspection according to 611.13 and at no additional cost to the Department.
611.14Drainage Structure Evaluation. Have an independent Registered Engineer evaluate the
drainage structures and provide a written documentation of whether defects listed in Table 611.14 are present or not. Record any other identified defects present in the drainage structure. Evaluate all identified defects to ensure structural stability and hydraulic capacity are in conformance with the contract documents. Provide written documentation of evaluations performed of all defects and any recommended repairs to the Engineer. The independent Registered Engineer cannot be an employee of the Contractor or drainage structure manufacturer. TABLE 611.14 Defects requiring evaluation Connection between conduit and drainage structure has free flowing water, infiltration or has not been constructed in accordance with 611.10. Grate is more than 0.1 ft (30 mm) from horizontal or vertical location documented on construction inspection form CA-P-3. Invert elevation is more than 5 percent of the conduit diameter or 0.1 ft (30 mm) from plan elevation, whichever is greater as documented on construction inspection form CA-P-1 Grates do not properly seat in the frame. Grates are not placed on the required slope. Grates or frames are broken or cracked. Drainage structure does not match the details on the standard construction drawing. Steps do not line up. Manhole top does not match plans. Conduit connections are not fully grouted per 611.10 Conduits protrusions are present If the evaluation determines repairs are not necessary, have the independent Registered Engineer make the following statement in the evaluation: “I certify that repairs are not required to address the defects identified during the drainage structure evaluation. The drainage structure will function in accordance with the contract documents.” If the evaluation determines repairs are necessary have the independent Registered Engineer prepare, sign, seal, and date plans for the repair. The independent Registered Engineer must make the following statement on the repair plans: “I certify that this repair plan was designed to ensure the structure will function structurally and provide hydraulic capacity in accordance with the contract documents.” Perform the repair at no additional cost to the Department. Perform an inspection to evaluate the repaired portion of the drainage structure and any conduit potentially affected by the repair work 30 492 days after the repair has been made. Perform the inspections according to 611.12 and at no additional cost to the Department. Have an independent Registered Engineer evaluate the inspection according to
and at no additional cost to the Department
611.15Surface Settlements. Repair any surface settlement within the trench limits or within 4
feet (1.2 m) of a drainage structure. Have an independent Registered Engineer evaluate the conduit according to 611.13 or the drainage structure according to 611.14. Perform all repair work at no additional cost to the Department.
611.16Method of Measurement. The Department will measure conduit by the number of feet
(meters), measured from center-to-center of small drainage structures or between open ends including the length of pipe bends and branches. The Department will not deduct conduit length for catch basins, inlets, or manholes where the distance measured in the direction of flow, including bends, is 6 feet (2
the Engineer to accommodate full conduit sections, the Department will measure the length placed. Conduits placed on slopes steeper than 3H:1V or with beveled or skewed ends will be measured along the invert. The Department will measure field paving of existing pipe by the number of feet (meters). The Department will measure Manholes, Inlets, Catch Basins, Inspection Wells, Junction Chambers, and Precast Reinforced Concrete Outlets, whether new, reconstructed, or adjusted to grade, by the number of each type of structure complete and accepted.
611.17Basis of Payment. Payment for all inspections is included with the contract unit price of
the corresponding pay item. When a pay item calls for concrete encasement, the Department will pay for furnishing and placing the concrete encasement and for any additional excavation required under the contract unit price for the encased conduit. When a pay item calls for conduit to be field paved, all work and materials necessary for the item are included in the contract unit price for each conduit. All required repairs, including any settlement problems, must be made prior to acceptance. Payment for the repair is included with the contract unit price of the corresponding pay item. The Department will not make additional payment for repair work on conduit installed under this specification. All conduits and drainage structures installed without required submittals per 611.04 are considered unacceptable materials per 106.07. The Department will pay for accepted quantities at the contract prices as follows: Item Unit Description Foot (Meter) ___" (___ mm) Conduit, Type ___ Foot (Meter) ___ ___ Conduit, Type ___ Foot (Meter) ___" (___ mm) Conduit Reconstructed, Type ___ Foot (Meter) Type ___ Precast Reinforced Concrete Three-Sided Flat Topped Culvert, ___' (___ mm) Span ___' (___ mm) Rise Foot (Meter) Type ___Precast Reinforced Concrete Arch Sections, ___' (___ mm) Span ___' (___ mm) Rise Foot (Meter) Type ___ Precast Reinforced Concrete 493 Round Sections, ___' (___ mm) Span ___' (___ mm) Rise Foot (Meter) ___' (___ mm) Rise ___' (___ mm) Span Conduit, Type A Corrugated Steel Box Culvert, ___' (___ mm) Minimum Cover, ___' (___ mm) Maximum Cover Foot (Meter) ___' (___ mm) Rise ___' (___ mm) Span Conduit, Type ___Corrugated Aluminum Box Culvert, ___' (___ mm) Minimum Cover, ___' (___ mm) Maximum Cover Foot (Meter) ___" (___ mm) Conduit, Type ___, with Field Paving of Pipe Foot (Meter) ___" (___ mm) Conduit, Type ___, Field Paving of Existing Pipe Foot (Meter) Conduit, Type F for underdrain outlets Each Manholes Each Inlets Each Catch Basins Each Inspection Wells Each Junction Chambers Each Manhole, Catch Basin or Inlet Reconstructed to Grade Each Manhole, Catch Basin, or Inlet Adjusted to Grade Each Precast Reinforced Concrete Outlet 494
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